Impact Copolymer Polypropylene for Durable Packaging

Polypropylene-based packaging material with improved drop impact resistance, blocking resistance, slipperiness, and flavor barrier properties for food packaging applications. The packaging material contains an ethylene-propylene block copolymer with a unique phase dispersion structure. The copolymer has a matrix of propylene-based polymer and spindle-shaped domains made of propylene-based elastomer. The spindle shape provides optimal properties like drop impact resistance, blocking resistance, and slipperiness while avoiding issues like poor flavor barrier or appearance.

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Packaging tray for protecting fragile flat objects during handling and transportation. The tray has a housing part to hold the object and a covering part that encloses the object and housing. The covering part has protrusions that extend along the object sides. The protrusions have a first region near the center with lower rigidity than the second region further out. This design allows the protrusions to flex and absorb impacts instead of transmitting them directly to the object. The protrusions also have tapered holding surfaces that contact the object edges. This prevents concentration of forces at the object corners. The modified protrusions and holding surfaces reduce stress and deformation of the object when the tray experiences vibrations or collisions during handling.

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Food contact material compositions with improved stiffness, barrier properties, thermoformability, and optical properties for food packaging applications. The compositions contain polypropylene, a hydrocarbon resin, and optionally additives like nucleating agents. The polypropylene is a blend of two types, one with low melt flow rate and one with high melt flow rate. This combination provides high stiffness, clarity, and processability while reducing shrinkage compared to using a single polypropylene. The hydrocarbon resin further enhances stiffness. The resulting compositions can have desirable properties like high stiffness, low shrinkage, low water vapor transmission, low oxygen transmission, high impact strength, and high clarity for food packaging applications.

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Polypropylene-based multilayer film for packaging that provides excellent heat resistance, cold impact resistance, and low-temperature sealability. The film has a heat seal layer containing 70-100% of a propylene homopolymer and 30-90% of a propylene resin with a melting point of 132-150°C. The other layers contain propylene-ethylene block copolymer and ethylene-propylene elastomer. This film composition allows the film to withstand high temperatures, prevent bag breaking at low temperatures, and seal at low temperatures.

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Laminate and frozen food container/packaging with improved impact resistance, rigidity and environmental friendliness compared to conventional materials. The laminate has an inner layer with high filler content (>50% by mass) using calcium carbonate particles. The inner layer and outer layers use specific thermoplastic resins that satisfy certain conditions to maintain strength and flexibility at low temperatures. The filler content and resin properties allow the laminate to have high impact resistance at cold temperatures. The filler content also reduces environmental impact compared to resin-heavy alternatives.

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Polyolefin packaging material that is fully recyclable and reusable without special separation steps. The packaging uses a polyolefin bonding adhesive layer made from a modified copolymer of C2-C4 olefins like ethylene and butylene. The copolymer is grafted with maleic anhydride at a ratio of 0.5-5%. This adhesive layer bonds two polyolefin films, like a cast polypropylene and an oriented polypropylene, to create a packaging material that can be directly recycled and reused without separating layers. The modified adhesive provides good bonding strength, transparency, and impact resistance.

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Polypropylene composite resin with improved impact resistance for lightweight, thin-walled parts like automotive components. The composite has a specific blend of propylene-ethylene block copolymers, thermoplastic elastomers, inorganic filler, and nucleating agent. The blend balances rigidity and impact resistance better than traditional PP. The resin has a narrow range of propylene-ethylene block copolymers with specific melt indexes, flexural moduli, and impact strengths. It also contains thermoplastic elastomers, filler, and nucleating agent in targeted amounts. This composition enables thinner, lighter parts with improved impact resistance compared to conventional PP.

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Polypropylene resin composition with improved impact resistance at both room and low temperatures. The composition contains a specific type of propylene-ethylene block copolymer (A) made by step polymerization, along with polyethylene (B). The block copolymer has certain properties when extracted with xylene at room temperature: the extracted copolymer contains 25-40 wt% ethylene, the ethylene content in the extract is 35-45 wt%, and the ethylene content in the block copolymer (A) is 9-20 wt%. This composition balance provides both high room temp impact and low temp impact resistance in molded parts.

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Polyolefin compositions with improved impact properties for recycled plastic applications. The compositions contain blends of ethylene polymers, propylene polymers, propylene-based elastomers, and ethylene-based plastomers. Adding small amounts of propylene-based elastomers like VISTAMAXXTm to polyolefin blends improves impact strength of recycled post-consumer plastics rich in polypropylene and polyethylene. The elastomers surround the polypropylene domains to act like impact modifiers instead of contaminants.

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Packaging bags with improved drop resistance without compromising recyclability. The bags have a unique multilayer film structure where the seal area between two heat sealable layers contains oriented crystals. This is achieved by using a reinforcing film sandwiched between the heat sealable layers. The reinforcing film contains a blend of olefin resin and a higher melting point reinforcing resin. This provides improved strength in the sealed area without impairing recyclability. The bags have higher drop resistance compared to conventional multilayer bags without sacrificing recyclability.

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Polyolefin composition containing a specific ratio of virgin heterophasic propylene copolymer and recycled plastic blend to achieve high impact strength, good melt flow rate, and high modulus. The virgin copolymer has a low ethylene content, high ethylene content in the soluble fraction, and high melt flow rate. The recycled blend has a high propylene content, low content of other polymers, and low impurities like limonene. The overall composition has impact strength 5-8 kJ/m2, MFR 30-80 g/10 min, and modulus 1450-1600 MPa.

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Polypropylene material composition with improved impact strength and transparency compared to traditional polypropylene. The composition contains polypropylene and an ethylene-α-olefin copolymer. The ethylene-α-olefin copolymer has a melt index of 0.1-20 g/10 min and the structural units from the α-olefin have a dispersion index RMD above 102%. This composition provides toughness, hardness, and clarity.

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Toughened impact copolymerized polypropylene resin with improved properties like melt flow rate and impact strength for applications like automotive parts, appliances, and packaging. The resin composition contains copolymerized polypropylene, a nucleating agent, and a performance improver. The performance improver is a combination of an epoxy resin and a peroxide. It enhances the melt flow rate and impact resistance of the copolymerized polypropylene compared to using just the copolymer. The epoxy resin is cured imidazole. The peroxide can be dicumyl peroxide or triethyl-3,6,9-trimethyl-1,4,7-triperoxynonane. The composition also has antioxidant and acid neutralizer. The copolymerized polypropylene is made by propy

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Food packaging material replacement for styrene-containing materials like HIPS and PVdC. The replacement is a formable sheet and packaging structure made by co-extrusion of specific materials like post-consumer recycled PET (PCR PET), polypropylene (PP), ethylene methyl acrylate (EMA), ethylene/methyl acrylate/glycidyl methacrylate terpolymer (EMA-GMA), and blue-white TiO2 color concentrate. The structure has improved oxygen and moisture barrier, trim force, seal/peel force, hot fill resistance, and impact resistance compared to standard PET. It replaces HIPS/PVdC in ambient fill applications without compromising packaging performance.

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Multilayer structure for packaging applications like standup pouches that provides improved gas barrier properties after retort processing and better puncture resistance. The structure has an ethylene-vinyl alcohol copolymer (EVOH) barrier layer sandwiched between an intermediate layer containing polypropylene and a hydrocarbon resin, and a heat seal resin layer. The intermediate layer with the specific resin composition improves the barrier properties of the EVOH layer after retorting while avoiding excessive thickening. The hydrocarbon resin in the intermediate layer also improves puncture resistance.

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Food contact material (FCM) compositions with improved properties like stiffness, barrier, thermoformability, and optical properties for food packaging. The FCM compositions contain a blend of polypropylenes, one with low melt flow rate and one with high melt flow rate, along with a hydrocarbon resin. This blend provides high stiffness, clarity, barrier, and processability compared to using just polypropylene. Nucleating agents can also be added. The FCM compositions can have properties like 2.5 GPa tensile modulus, 40 MPa tensile strength, <20 J/m Izod impact, <0.005 g/100 in2/48 hr water vapor transmission rate, <0.07 cc/pkg/24 hr oxygen transmission rate, <80% haze, and <50% el

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A reusable bottle that can be frozen without cracking or breaking. The bottle has a body and cap made from a specific polymer composition. The body contains 85-90% polypropylene random copolymer (PPRC) and 10-15% thermoplastic elastomer (TPE) like SEBS. The cap has 85-90% polypropylene block copolymer (PPB) and 10-15% SEBS. This composition improves impact resistance and prevents cracking when the frozen bottle is handled. The TPE additive in the polypropylene matrix enhances ductility and flexibility at low temperatures.

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Multi-layered pressure packaging with improved drop resistance, impact resistance, weight, stiffness, and environmental impact compared to traditional packaging. The packaging has a stretch blow molded container with a foam layer enclosing the body and bottom. The foam is formed in place by injecting foamable material between the molded container and an outer enclosure. This provides a sandwich structure with the foam layer sandwiched between the container and outer enclosure. A second layer can be applied over the foam to hold it together with the container. This reduces weight, provides improved stiffness and strength, and improved drop and impact resistance compared to just molding the container from foam. The foam layer can also have a polymer layer inside the container for chemical resistance to the filling material.

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High-impact copolymerized polypropylene with good fluidity and rigidity, prepared using a modified Spheripol-II polypropylene process. The modification involves using high specific surface area catalysts with specific donor additives in the reactor to regulate copolymer composition and sequence. This allows achieving high rubber phase content without sticking issues. The copolymer has a polypropylene matrix with embedded long-sequence polyethylene segments, a rubber phase of ethylene-propylene copolymer with specific ethylene content, and wide molecular weight distribution. This provides high impact strength, melt flow, and modulus.

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Impact copolymer polypropylene composition for molded containers and packaging that maintains impact strength and clarity after sterilization and can be stored at low temperatures. The composition contains a polypropylene matrix and dispersed ethylene-propylene rubber phase. The rubber phase is 4-10 wt% with 35-45 mol% ethylene, and the rubber IV/matrix IV ratio is 0.8-1.1. This balance provides high impact strength at room and low temp while preventing long chain PE formation. The composition has 2-20 g/10 min MFR and <20% haze change after sterilization.

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A high-impact polypropylene resin composition and molded articles produced from it. The composition has a unique balance of rigidity and impact strength without adding fillers or additives. It contains 74-80% propylene homopolymer and 20-26% ethylene-propylene rubber, with the ethylene-propylene rubber having a low ethylene content (6.5-7.5%) compared to typical compositions. This optimized ratio of ethylene-propylene rubber allows improving impact strength while maintaining rigidity compared to conventional polypropylene.

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Reusable freezable water bottle with improved impact resistance and ability to withstand freezing temperatures without damage. The bottle has a body made of a polymer composition containing 85-90% polypropylene random copolymer (PPRC) and 10-15% thermoplastic elastomer (TPE) like SEBS. This composition provides impact resistance when frozen. The cap is made of 85-90% polypropylene block copolymer (PPB) and 10-15% SEBS. The composition ratio and specific polymer types are optimized to balance properties like impact resistance, flexibility, and processability.

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Polypropylene resin with improved mechanical properties and processability for injection molding applications. The resin contains a propylene/ethylene copolymer, a polypropylene or polyethylene-based impact modifier, and additives. The copolymer ratio is 15.7:1 to 49:1 propylene to ethylene. The modifier content is 1-14% by weight. This formulation provides balance of rigidity, impact strength, elongation, and break strength. The resin has specific properties like melt index 2-10 g/10min, density 0.89-0.91 kg/m3, elongation 11-15%, modulus 792.9-1034.2 MPa, and impact 210-350 J/

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Polypropylene resin composition with enhanced impact resistance and melt flowability for injection molding large parts like bumpers and instrument panels in automobiles. The composition contains an ethylene-propylene block copolymer resin with specific properties. The copolymer has a propylene homopolymer matrix and an ethylene-propylene rubber copolymer component dispersed in it. The rubber component content is 25-40% by weight, the ethylene-propylene ratio is 0.25-0.45, and the copolymer has a melt index of 20-45 g/10 min. This balances impact resistance and flowability. The composition can also contain additives like antioxidant and neutralizer.

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A multilayer film for packaging organoleptic-sensitive products like water that has improved abuse resistance, odor barrier properties, and conformity to piercing probes compared to existing films. The film has an outer sealant layer with high density homopolymer, bulk layers with low density copolymer, modified tie layers, and an odor barrier layer. The film structure provides abuse resistance, conformity, and odor barrier without compromising seal integrity.

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Impact copolymer polypropylene compositions for injection molding that provide good balance of properties for thin wall molding while minimizing flow marks and tiger marks. The compositions contain a propylene matrix and dispersed ethylene-propylene rubber (PER) phase with specific amounts of ethylene content (43-55 mol%) and intrinsic viscosity (3-7 dL/g) in the rubber phase. This composition allows high flow for thin wall molding, high modulus for strength, and low gloss and flow marks in molded parts. The MFR2 is 70-200 g/10 min.

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Multilayer structure for packaging applications like standup pouches that has improved oxygen barrier properties after retort treatment compared to conventional structures. The multilayer structure includes a barrier layer containing ethylene-vinyl alcohol copolymer (EVOH), an intermediate layer between the barrier and heat seal layers containing polypropylene and a hydrocarbon resin with specific molecular weight and softening point ranges, and a heat seal layer. This intermediate layer improves impact resistance while maintaining oxygen barrier and reduces water vapor permeability compared to just adding polypropylene.

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Polypropylene composition with improved clarity and impact resistance suitable for containers like refrigerator storage containers. The composition has a heterophasic structure with a first polypropylene random copolymer phase and a second phase of a propylene-alpha olefin copolymer. The first phase is the matrix with higher xylene solubles, while the second phase has higher alpha olefin content and larger particle size. The alpha olefin content of each phase can be controlled. The composition balances clarity and impact resistance by optimizing the polymer phases. The alpha olefin content of the second phase is increased to improve sub-zero impact resistance without sacrificing clarity.

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Impact-resistant polypropylene composition with low volatile organic compounds (VOC), high melt flow rate, high rigidity, and high toughness. The composition contains a polypropylene prepared using a specific catalyst system. The catalyst system involves a solid catalyst component, an organoaluminum compound, and an external electron donor. The solid catalyst component is prepared by contacting a magnesium source and a titanium source. The external electron donor contains a dialdehyde compound and a phosphate compound. This catalyst system enables controlling composition, content, and molecular weight to create the desired impact-resistant polypropylene with low VOC, high flow, high rigidity, and high toughness.

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Impact copolymer compositions based on polypropylene (ICP) with high melt flow rates (MFR) and high resistance to Izod impact. The compositions have a matrix polymer made of propylene copolymer with low comonomer content, and an elastomeric rubber phase made of propylene copolymer with higher comonomer content. The rubber phase improves impact strength but can reduce MFR. By visbreaking the compositions with peroxide agents during extrusion, the MFR is increased while maintaining impact strength. This allows making ICPs with high MFR and impact resistance for applications like injection molding and blow molding.

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Polypropylene composite resin with improved impact resistance for molded articles like plastic pallets. The composite resin contains 80-98% of a propylene resin with dispersed ethylene-propylene elastomer, and 2-20% glass fibers. The propylene resin has 60-80% homopolymer and 20-40% ethylene-propylene copolymer. The ethylene-propylene copolymer improves impact strength by weakening interfacial tension with the propylene homopolymer. The glass fibers reinforce rigidity.

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High-gloss, high-impact polypropylene for appliances and automotive parts that provides improved gloss without sacrificing toughness compared to conventional polypropylene compositions. The composition contains a block copolymer polypropylene with ethylene-propylene rubber, a nucleating agent, antioxidant, and acid absorbent. The optimized particle size of the ethylene-propylene rubber in the block copolymer improves gloss while maintaining toughness. The composition has gloss greater than 100%, impact strength over 4 kJ/m2, and melt index 20-40 g/10min.

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A recycled polypropylene-polyethylene blend with improved mechanical properties for applications like pipes and packaging. The blend contains a high percentage (>80%) of recycled polypropylene-rich material. To overcome the challenge of degradation in properties compared to virgin polypropylene, a compatibilizer is added. The compatibilizer is a copolymer with specific properties like low ethylene content, low xylene soluble fraction, and low intrinsic viscosity of the xylene soluble fraction. Adding this compatibilizer improves fracture strain, impact resistance, and maintains stiffness in the recycled blend.

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Impact-resistant, low-temperature-resistant and highly transparent polypropylene composition that combines random copolymer PP, oxygen scavengers, nucleating agents, acid absorbers, PP-ethylene/PP block copolymers, and vinyl elastomers to achieve high impact resistance, low temperature toughness, and transparency. The composition allows transparent PP with impact resistance down to -20°C.

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High-tensile-strength polypropylene composition for applications like automotive, electronics, and packaging that improves the strength of polypropylene for wider use without adding fillers. The composition contains specific ratios of block copolymerization PP, high melt strength PP, alpha crystal form nucleating agent, antioxidant, and white oil. It enables higher tensile strength and impact resistance compared to regular PP without sacrificing processability.

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Transparent polypropylene copolymer composition with improved balance of properties like high transparency and impact resistance. The composition contains a base polypropylene random copolymer with low ethylene content (<4%) blended with a rubbery propylene ethylene copolymer with higher ethylene content (>10%). The combination of phases provides transparency from the base copolymer and impact resistance from the rubbery copolymer. The ethylene content and phase ratios are optimized for the balance of properties. The catalyst system used in polymerization is a Ziegler-Natta catalyst with electron donors and cocatalysts.

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Impact copolymer polypropylene composition for injection molding, especially thin-wall molding, that balances properties like impact strength and stiffness for packaging applications. The composition has a propylene matrix with dispersed ethylene-propylene rubber (EPR) phase. The matrix propylene polymer has high molecular weight distribution (MWD) and the EPR has high ethylene content. This provides good impact at low temps, high stiffness, and processability with MFR2 of 60-300 g/10min. The composition is made by polymerizing propylene and then adding ethylene to the matrix to create the dispersed EPR phase.

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Layered protective packaging material made by a process that volumetrically expands a coating on one layer to transform it into a protective layer. The process involves treating a layer with a coating composition using flexographic coating technique, drying the coating to remove water, and applying heat/radiation to expand the coating. This expands the treated layer into a protective layer. The flexible packaging can be manufactured in a roll-to-roll process using conventional printing techniques. The layered packaging provides impact resistance without bulky materials or support structures. It can be easily manufactured and recycled compared to conventional mailers.

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A polypropylene-based resin composition with improved impact strength, especially at low temperatures, for applications like corrugated sheets. The composition contains two types of polypropylene-based block copolymers. The first copolymer has 6-8 wt% ethylene content, the second copolymer has 13-15 wt% ethylene content. The lower ethylene copolymer improves stiffness and the higher ethylene copolymer improves impact resistance. This balance provides good balance of rigidity and impact strength.

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Composite materials and products made from recycled materials like multilayer packaging to reduce cost and environmental impact. The composites can have improved properties compared to virgin material composites. The recycled materials used include polyethylene, polypropylene, olefin, ionomer, polyester, and metal fillers. The composites can have higher strength, stiffness, and moisture resistance. The recycled materials are optimized through pre-drying, coupling agents, and higher processing temperatures. The composites also have benefits like heat dissipation and static charge reduction due to the metal filler.

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Polypropylene compositions with improved impact strength, tensile strength, and elongation at break compared to traditional impact copolymers. The compositions contain impact copolymers of propylene and ethylene with high melt flow rates and polypropylene resins with low melt flow rates. The combination of impact copolymers and low melt flow polypropylene resins provides better mechanical properties like impact, tensile, and elongation compared to just the impact copolymers.

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Ultra-low temperature impact resistant polypropylene composition and preparation method that improves the low-temperature impact resistance of polypropylene materials. The composition contains components like polypropylene, styrene grafted polypropylene, elastomers, inorganic fillers, nucleating agent, and antioxidant. The preparation involves mixing the components in specific ratios and processing conditions. The styrene grafted polypropylene provides impact resistance, fillers balance rigidity, nucleating agent enhances crystallization, and antioxidant prevents degradation.

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The composition is a polypropylene material with improved stiffness and impact strength. It contains a heterophasic propylene copolymer with a specific composition, including a (semi)crystalline polypropylene, an elastomeric ethylene/propylene copolymer, and a first nucleating agent. The composition also has an impact modifier containing a polyethylene copolymer with a specific density range and a second nucleating agent. This composition allows downgauging of products like car seats, strollers, and toys without sacrificing stiffness or impact resistance.

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Impact-resistant olefin polymer composition for injection molded products like pallets with superior balance of rigidity and impact resistance. The composition has a higher melt flow rate (MFR) compared to conventional impact copolymers, allowing faster cycle times. It contains a polypropylene matrix with a higher molecular weight and a higher molecular weight ethylene-propylene copolymer. The composition has specific xylene solubility, ethylene content, and molecular weight ratios that enable the balance of properties.

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High-rigidity and high-toughness polypropylene composition with improved properties compared to traditional impact polypropylenes. The composition has a melt flow rate >35 g/10 min, ethylene content >7%, rubber content >15%, impact strength >7 kJ/m2 at room temp, and flexural modulus >1500 MPa. This balances rigidity, toughness, and processability. The composition is made by blending impact copolymer polypropylene powder with additives like antioxidants, acid absorbers, and nucleating agents.

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A packaging material for food products that replaces traditional materials like high impact polystyrene (HIPS) and polyvinylidene chloride (PVdC) to avoid migration of styrene and chlorine into food. The packaging is made from a compatibilized polymer blend with a specific morphology that can replace HIPS/PVdC in ambient fill technologies. The blend includes post-consumer recycled PET, polypropylene, ethylene methyl acrylate, and ethylene/methyl acrylate/glycidyl methacrylate terpolymer. The blend provides oxygen barrier, impact resistance, and trim force reduction.

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High-impact polypropylene resin composition with improved toughness and impact resistance without sacrificing heat distortion temperature and rigidity. The composition contains 50-90 parts of polypropylene, 10-50 parts of a specific polybutene alloy, optional antioxidant, filler, and up to 1 part nucleating agent. The polybutene alloy has 60-90% polybutene, 9.9-35% polypropylene, and 0.1-5% polybutene-polypropylene block copolymer.

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Polypropylene composition for injection molding with improved balance of stiffness and impact resistance, flowability, and gloss compared to existing compositions. The composition contains two propylene-based components, one with a higher ethylene content and one with a lower ethylene content. The components have specific intrinsic viscosities and molecular weight distributions. A crystal nucleating agent is also used. This optimized composition allows higher stiffness and lower temperature impact resistance compared to conventional PP compositions.

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Thermoplastic elastomer composite polypropylene resin composition that provides high impact resistance and mechanical strength without using crosslinking agents. The composition consists of an ultra high impact propylene block copolymer, a polypropylene block copolymer, and an ethylene rubber component. The composition has a density of 0.880-0.900 g/cm3, impact strength above 93 Shore A at room and -40°C, and hardness of 93-95 Shore A. This thermoplastic elastomer composite polypropylene can be processed and recycled without crosslinking agents like rubber. The composition is suitable for injection molded articles like automotive parts and industrial materials.

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A polypropylene-based film for retort packaging that provides excellent low-temperature impact resistance, orange-peel formation resistance, blocking resistance, and heat seal strength. The film is made by blending a propylene/ethylene block copolymer and a low-density polyethylene polymer in specific ratios. The block copolymer has a xylene insoluble fraction of 75-85% with a limiting viscosity of 1.7-2.0 dl/g and a xylene soluble fraction of 3.0-3.4 dl/g limiting viscosity. The low-density polyethylene has a density of 0.900-0.930 g/cm3 and a melt flow rate of 1-10 g/10 min. This film composition provides optimal balance of properties for

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