Impact Modifiers for Package Durability

Impact protection material made from thermoplastic elastomers and borosiloxane for applications like protective gear and packaging. The material absorbs and disperses impact energy without breaking. It contains specific blends of styrene-based thermoplastic elastomers and borosiloxane with optimized properties. The elastomers have low glass transition temperatures below room temperature to make the material soft at normal conditions. The borosiloxane with a relaxation time of 0.1-1.5 seconds provides high energy dissipation under impact. Blending these components in specific ratios improves impact resistance over a wider range of rates compared to using the elastomers alone.

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Thermoplastic resin composition with improved appearance and impact resistance for molded articles like electronic device housings. The composition contains a polycarbonate resin, an impact modifier (bulk-polymerized acrylonitrile-butadiene-styrene), and a mineral filler. Adding the specific impact modifier type, along with olefin-based copolymers or styrene copolymers, prevents filler protrusion and splaying that degrades appearance. This allows high filler loading for rigidity without compromising appearance. The composition has excellent mechanical properties, impact strength, and appearance for molded articles.

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Molded articles containing a poly(arylene ether) resin composition with improved mechanical properties and heat resistance. The composition includes a poly(arylene ether) resin, a polyamide resin, an impact modifier, a compatibilizer, and optionally polystyrene and polypropylene. The poly(arylene ether) resin provides heat resistance and dimensional stability, the polyamide resin improves processability, and the impact modifier and compatibilizer enhance impact strength. The composition satisfies certain ratio equations involving the amounts of poly(arylene ether) resin, polyamide resin, and impact modifier to achieve optimal properties. Adding polystyrene and polypropylene further enhances properties but requires specific ratios.

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Polypropylene-based resin composition for packaging bags used in retort packaging of food products, that provides both high low-temperature impact resistance and good heat sealability. The composition contains 85-95% of a propylene/ethylene block copolymer and 5-15% of an ethylene/α-olefin copolymer. The block copolymer has specific composition and molecular structure requirements. The ethylene/α-olefin copolymer has a low melt flow rate, high density, and melting peak temperature range. The composition achieves both high low-temp impact resistance and good heat sealability for enlarged packaging bags without sacrificing one for the other.

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Impact-modified polyamide molding compositions for producing molded parts with improved impact resistance and retention of transparency over time. The compositions contain specific amorphous polyamides, functionalized styrene-butadiene-styrene triblock copolymers, and optionally partially crystalline polyamides and additives. The functionalized styrene-butadiene-styrene triblock copolymer acts as an impact modifier. The specific amorphous polyamides have compositions optimized for impact resistance. The compositions find applications in molded parts like decorative items, sports equipment, containers, and electrical components where impact resistance and retention of transparency are important.

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Polybutylene terephthalate (PBT) resin composition with improved processability and low temperature impact resistance. The composition contains 70-89.5 wt% PBT, 1-10 wt% acrylic impact modifier, 9-20 wt% butadiene-based impact modifier, 0.1-0.5 wt% heat stabilizer, and 0-2 wt% additive. The weight ratio of acrylic to butadiene impact modifier is 1:3 to 1:5 during extrusion and injection. This composition balances good processability during extrusion and injection with excellent low temperature impact resistance.

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Thermoplastic resin composition with improved impact resistance, weatherability, colorability, and processability. The composition contains specific ratios of acrylic graft copolymer, aromatic vinyl-cyanide vinyl compound copolymer, polyalkyl (meth) acrylate resin, and a silicone-based impact modifier. The acrylic graft copolymer has a shell of polyalkyl (meth) acrylate and a core of acrylic rubber. The silicone impact modifier has a core-shell structure with a silicone core and acrylic shell. The composition can be used to make molded articles with improved impact resistance, weather resistance, colorability, and processability compared to conventional thermoplastic compositions.

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Expandable polymer compositions for packaging materials that have reduced wear and improved impact resistance compared to traditional polystyrene foams. The compositions contain a vinyl aromatic polymer like polystyrene along with a functionalized ethylene-vinyl acetate copolymer. The functionalized EVA copolymer disperses in the vinyl aromatic matrix and adheres to it, modifying the properties. The compositions can be expanded using a blowing agent. The functionalized EVA provides improved toughness, abrasion resistance, and lower blowing agent loss compared to plain EVA. The vinyl aromatic polymer provides the expansion capability.

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Replacing conventional butadiene-acrylonitrile-styrene copolymer (CPE) impact modifiers with core-shell impact modifiers in thermoplastic compositions like PVC, while maintaining or improving impact resistance. The key is using core-shell modifiers with high rubber content (>90%) in lower loading levels (<4 parts/100 parts PVC) compared to CPE. This allows cost-effective replacement of CPE with core-shell modifiers in thermoplastic compositions without sacrificing impact strength. The compositions can further contain stabilizers, lubricants, processing aids, fillers, etc.

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Impact resistant plastic crates for improved durability during handling. The crates are made from a specific formulation of polymers, plasticizers, stabilizers, and modifiers. The formulation includes acrylonitrile-butadiene-styrene copolymer, high density polyethylene, p-hydroxyazopyridine, modified nano hydroxyapatite, a plasticizer, and a heat stabilizer. The exact weights of each component are provided. The p-hydroxyazopyridine and modified nano hydroxyapatite provide impact resistance.

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Transparent, impact-modified PMMA compositions for applications like lighting covers, automotive glazing, and displays where both transparency and impact resistance are desired. The compositions contain a specific ratio of PMMA and an impact modifier composition that has two distinct impact modifiers. One modifier is a graft copolymer with a rubbery phase and the other is an acrylate modifier. This combination provides synergistic improvement in impact resistance compared to using either modifier alone.

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High-impact, high-flow polyvinyl chloride (PVC) material for packaging applications that has improved strength, impact resistance, and flowability compared to conventional PVC. The material is made by blending modified PVC with nano calcium carbonate, polystyrene, and MBS (methyl methacrylate-butyl methacrylate copolymer) as a composite impact modifier. The small rigid particles in the modifier absorb energy to toughen the PVC matrix, while the low Tg elastomer in MBS improves low temp impact. This blending provides better balance of properties compared to adding separate high-impact resins like ABS or SAN.

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An anti-aging and durable plastic packaging material made by blending linear low density polyethylene (LLDPE) with a carboxylated nitrile rubber toughening agent. The LLDPE provides strength and impact resistance, while the carboxylated nitrile rubber improves aging resistance and durability. The ratio of LLDPE to carboxylated nitrile rubber can be adjusted to optimize properties.

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Polyolefin-based compositions for injection molded parts with reduced density while maintaining or improving properties like coefficient of linear thermal expansion (CLTE), shrinkage, and dimensional stability. The compositions contain a polyolefin like polypropylene, elastomers, fillers, additive package, and an impact-modifying compatibilizer. The polyolefin is 53-65 wt%, elastomers/compatibilizer is 25-34 wt%, filler is 5-12 wt%, additive is 0.5-5 wt%, and density is 0.90-1.00 g/cm3.

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Composition and process to modify impact resistance of thermoplastic polymers without increasing viscosity. The composition contains a thermoplastic polymer, a multi-phase polymer, and a low molecular weight (Mw<100k) (meth)acrylic polymer. The multi-phase polymer has a core-shell structure with a thermoplastic core and elastomeric shell. The (meth)acrylic polymer is incorporated into the thermoplastic matrix along with the multi-phase polymer. The composition can be processed like the thermoplastic alone to improve impact resistance without viscosity increase. The (meth)acrylic polymer helps disperse the multi-phase polymer and enhances impact resistance. The process involves mixing the thermoplastic, multi-phase, and (meth)acrylic polymers in specific ratios.

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Transparent, impact-modified poly(methyl methacrylate) (PMMA) compositions with improved impact strength compared to unmodified PMMA. The compositions contain PMMA along with two specific impact modifiers, a graft copolymer and an acrylate modifier. The graft copolymer has a rubbery elastomer phase with a glass transition temperature (Tg) below -10°C and a rigid polymeric superstrate grafted to it. The acrylate modifier is a copolymer of methacrylate monomers. The compositions have high impact resistance, transparency, and strength balance, making them suitable for applications like lightweight glass replacements.

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Impact-modified poly(meth)acrylate moulding compositions that balance properties like impact resistance, heat distortion resistance, optical clarity, and processability. The compositions contain specific core-shell-shell particle types produced by a multi-stage emulsion polymerization process. The core-shell-shell particles have a size range of 150 nm to 350 nm and contain a high proportion of low Tg comonomers in the shells. The compositions also have a low weight percentage of impact modifier compared to conventional formulations. This allows good impact resistance without sacrificing properties like haze and Vicat softening temperature. The compositions find applications in large, thin-walled parts like automotive lighting covers, displays, and glass panes.

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Ultra-high impact polystyrene (UHIPS) for military packaging materials that have significantly higher impact strength compared to conventional high impact polystyrene (HIPS) used in military applications. The UHIPS is made by modifying HIPS with specific additives like linear and star styrene-butadiene-styrene block copolymers, naphthenic oil, EBS (ethylene-bis-stearamide), and antioxidant. The modified UHIPS provides impact strength of 20KJ/m2 or higher, much higher than the 10KJ/m2 of HIPS. This improves the durability and resistance to stress cracking of military packaging materials like grenade boxes.

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Modified poly(arylene ether) resin composition with improved impact strength, heat resistance, balance of properties, and low specific gravity compared to traditional blends of poly(arylene ether) and polyamide resins. The composition contains 10-40 wt% poly(arylene ether), 30-70 wt% polyamide, 1-20 wt% polyolefin, and 1-20 wt% impact modifier. Adding the polyolefin resin lowers specific gravity and reduces moisture-induced property changes. The composition has better impact strength, heat resistance, and property balance than pure poly(arylene ether) or polyamide resins.

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Thermoplastic resin composition with improved colorability and mechanical properties like impact resistance and weatherability. The composition contains specific amounts of acrylic graft copolymer, aromatic vinyl-cyanide vinyl compound copolymer, polyalkyl (meth) acrylate resin, and a silicone impact modifier grafted with an acrylic compound. The silicone impact modifier has a core-shell structure with a silicone core and an acrylic shell. This composition allows achieving both excellent coloring properties and mechanical properties like impact resistance and weatherability in thermoplastic resins.

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