Nucleating Agents for Packaging Crystallization

Degradable plastic bottle for pesticides that can meet the storage requirements of pesticide products. The bottle is made by melt extrusion of a resin blend containing polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polymethyl ethylene carbonate (PMEC), polyglycolic acid (PGA), and calcium carbonate. The resin mixture is extruded into a preform, which is then blown into the final bottle shape. The PMEC and PGA nucleate PLA crystallization, improving its crystallinity without decreasing barrier properties compared to PLA blends without these additives. The calcium carbonate reinforces the bottle. The degradable bottle can be recycled and degrades under biodegradation conditions.

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Degradable plastic bottle made from a unique blend of biodegradable polymers that improves the mechanical properties and barrier performance compared to existing degradable bottles. The bottle is blow molded from a resin mixture containing PLA, PBAT, PPC, PGA, and calcium carbonate. The PPC and PGA polymers enhance the crystallinity of the PLA, improving its strength and barrier properties. The degradable bottle can hold pesticides without leaching solvents due to the higher crystallinity PLA.

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Multi-cup packaging arrangement and polypropylene sheet for producing it that allows easy breakage of the cups along predefined lines by bending the sheet. The packaging has multiple cups connected by bridges. The sheet has grooves on the bottom surface that divide it into segments. Bending the sheet towards the top breaks it along the grooves, separating the segments with the cups. The groove depth is 25-80% of the sheet thickness. This allows snapping the cups off in a predictable way. The snappability is achieved by using polypropylene with specific properties like nucleating agents and fillers.

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A water-soluble film made of polyvinyl alcohol (PVA) with optimized surface crystallinity for packaging drugs. The film has a specific range of crystallinity index near the surface, calculated using diamond and germanium prisms in ATR-FTIR analysis. This range is Fd1/Fg1 > 1.04 for the surface measured with diamond, and Fd2/Fg2 > 1.04 for the opposite side measured with germanium. The surface crystallinity should be higher than the bulk to balance mechanical strength and water sealability. Adjusting the PVA composition, plasticizer, and processing conditions achieves this.

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A polyolefin sheet with improved properties for press-through packaging applications like blister packaging. The sheet has a layer made from a composition with specific ingredients to provide excellent transparency, moisture resistance, and divisibility. The composition contains high-density polyethylene (HDPE), a crystal nucleating agent, a thermoplastic resin like petroleum resin, and an incompatible thermoplastic resin with high storage modulus. This composition allows the sheet to have superior transparency, moisture resistance, and tearability compared to conventional polyethylene sheets.

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A polyolefin sheet with excellent secondary processability, moisture resistance, transparency, and divisibility for press-through packaging materials. The sheet has a layer made from a thermoplastic resin composition containing specific components. It uses high-density polyethylene (HDPE) as the main resin, a crystal nucleating agent, a thermoplastic resin like petroleum resin, and a thermoplastic resin incompatible with HDPE that has a high storage modulus. This composition improves the sheet's divisibility for easy tearing compared to pure HDPE. The sheet has applications in press-through packages for pharmaceuticals and food products that need transparent, moisture-resistant, and easily tearable packaging material.

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Laminate packaging material that can be easily torn after heat treatment like retort processing, while still having high recyclability. The laminate has a base layer and a sealant layer both made mostly of polypropylene. The sealant layer contains a nucleating agent to improve cuttability. The sealant layer thickness is 30-95% of the total laminate thickness, and 20-200 microns. This allows the sealant layer to dominate cuttability after heat treatment. The high polypropylene content of 90% by mass also improves recyclability.

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Nucleating agent for polyolefin resins with improved beta crystal formation. The nucleating agent is a compound containing an aspartic acid structure. It can be used alone or in compositions with other additives like antioxidants, hindered amine stabilizers, etc. The nucleating agent improves beta crystal formation in polyolefin resins, which enhances properties like transparency, rigidity, and gas barrier properties.

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A resin composition for improving gas barrier properties of packaging materials like films and multilayer films used in food packaging. The resin composition contains two types of polyesters: a first polyester (A) with furandicarboxylate units and a second polyester (B) with ethylene glycol units. The second polyester (B) nucleates crystallization of the first polyester (A) at higher temperatures, improving gas barrier performance compared to using the first polyester (A) alone. Adding the second polyester (B) also increases the crystallization temperature of the first polyester (A) to 135°C or higher. The resin composition can be manufactured by melting and kneading the polyesters together. The polyesters mix at the interface when laminated by coextrusion to form a composite layer with crystals derived from both polyesters.

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A polyolefin sheet for press-through packaging applications that provides improved moisture resistance, transparency, and splittability compared to conventional polyolefin sheets. The sheet has a layer made from a thermoplastic resin composition containing specific components: high-density polyethylene (HDPE), crystal nucleating agent, an incompatible thermoplastic resin with a high storage modulus, and optionally a petroleum resin, terpene resin, coumarone-indene resin, rosin resin, or hydrogenated derivatives thereof. The HDPE density is 0.935-0.945 g/cm3, MFR 0.3-20 g/10 min at 190°C/2.16 kg. The incompatible thermoplastic resin has E' 1000 MPa or more at 2

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Polyolefin sheet with improved moisture resistance, transparency, splittability, and suitability for press-through packaging applications. The sheet has a layer made from a composition containing specific thermoplastic resins. The composition includes a high-density polyethylene (HDPE) resin, a crystal nucleating agent, an incompatible thermoplastic resin, and a thermoplastic resin with high storage modulus. This composition provides a sheet with enhanced moisture resistance, transparency, and splittability compared to pure HDPE sheets. The sheet can be used for press-through packaging materials that require splittability and moisture resistance, like pharmaceutical blister packs.

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Water-soluble film made of polyvinyl alcohol (PVA) resin that balances transparency, water solubility, and prevents sticking between films. The film has specific crystallite size, crystallinity, and external haze values. The crystallite size is 4.0-5.5 nm, crystallinity 10.0-25.0%, and external haze 7.0-30.0%. This provides transparency, water solubility, and reduced adhesion compared to conventional PVA films. The film can be made by adjusting PVA properties, plasticizer content, film formation conditions, and adding nucleating agents.

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Propylene-based polymer composition for making biaxially stretched films with low heat shrinkage. The composition contains a propylene-based polymer and a crystal nucleating agent. The nucleating agent promotes formation of specific crystal structures that reduce shrinkage during stretching. The polymer has a narrow isotactic pentad fraction of 90% or higher and a melt flow rate of 5-30 g/10min. The nucleating agent concentration is 50-5000 ppm.

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Propylene-based polymer composition, biaxially stretched film, method for producing biaxially stretched film, and packaging bag. The composition contains a propylene-based polymer and a β-crystal nucleating agent. The composition has a specific melt flow rate (1-30 g/10 min), crystallinity (0.1-1.0%), and β-nucleating agent concentration (100-500 ppm) range. The film made from this composition has high TD modulus and low TD heat shrinkage compared to conventional propylene films. The film production involves sequential MD and TD stretching with relaxation between stretches. This allows the film to have high MD and TD orientation without excessive shrinkage. The films can be used in packaging bags.

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Primary lens packaging material made from a nucleated polypropylene resin that provides improved lens packaging with reduced additive transfer to the lens and solution. The resin is a polypropylene homopolymer with additives like stabilizers, acid scavengers, and nucleating agents. The resin composition allows for controlled shrinkage, higher crystallization temperature, and stiffer parts compared to unnucleated polypropylene. The nucleating agents aid crystallization and reduce injection molding cycle times. The acid scavengers prevent degradation during processing.

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Biodegradable packaging material for consumer goods that is predominantly home compostable. The packaging material is a polymer blend containing biodegradable polymers like polyhydroxyalkanoates and biodegradable polyesters like polybutylene succinate. A nucleating agent is added to improve the polymer properties. The blend can be used to make packaging components like bags, films, and containers for products like clothing, food, and health items that can decompose in home composting environments.

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Bio-degradable polymer composition for producing packaging films with improved barrier properties using natural additives to reduce gas diffusion. The composition contains polylactide (PLA) as the biodegradable polymer, plasticizers like PEG copolymer or styrene-acrylic oligomer, and a nucleating agent. The PLA is blown or extruded into a thin film, then tempered at 90-130°C to increase crystallinity and significantly improve gas barrier properties without lamination. The tempering step is key to achieving the high gas barrier levels.

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Biodegradable polymer composition for producing packaging films with enhanced barrier properties, specifically for food packaging, using a composition containing natural additives to reduce gas diffusion. The composition is a single-layer film made from biodegradable polymers like PLA that has improved barrier properties without the need for lamination or complex processing techniques. The films are blow molded or extruded, then tempered at 90-130°C to improve crystallinity and further enhance barrier properties. The natural additives, like nucleating agents, help control crystallization during processing and provide better barrier properties. This allows making biodegradable packaging films with sufficient barrier properties for food applications using simpler, more economical, and recyclable processes compared to laminated or multi-layer films.

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Polyolefin-based sheet for press-through packaging with improved moisture resistance, transparency, and splittability. The sheet has a layer made from a composition containing specific thermoplastic resins like HDPE, crystal nucleating agent, petroleum resin, incompatible thermoplastic, and additives. The sheet's properties allow better moisture resistance, transparency, and easier hand cutting compared to conventional polyolefin sheets. The sheet is used for press-through packaging applications like PTP packaging and blister packs. The sheet is formed by extrusion and quenching techniques.

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Compostable food packaging containers made from materials that break down in composting facilities. The containers aim to reduce landfill waste by using compostable polymers instead of non-biodegradable materials like styrene and polyethylene. The compostable polymeric material for the containers has a specific composition, crystallinity, and cooling rate during processing to achieve compostability without sacrificing barrier properties. The containers contain about 90-99% compostable polymer, a nucleating agent, and have a degree of crystallinity of 5-45%. This allows them to decompose in composting environments while still providing suitable food preservation.

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