Bio-Based Polyethylene for Sustainable Packaging

Preparing bio-based thermoplastic polyolefin elastomers using bioethylene as the main raw material instead of petroleum-derived ethylene. The method involves fermenting biomass to produce bioethanol, dehydrating it to get bioethylene, and then copolymerizing bioethylene with another olefin in the presence of a catalyst to make the elastomer. This reduces dependence on fossil fuels and emissions compared to conventional elastomer production.

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Resin compositions, molded articles, laminates, and laminated tubes containing biomass-derived polyolefins for improved heat seal strength and moldability compared to conventional fossil fuel-derived plastics. The compositions have specific ratios of biomass-derived low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and modified polyolefins. The LDPE and LLDPE are biomass-derived, the LLDPE has a density range, and the modified polyolefin is derived from compound grafting. This composition balance provides excellent heat sealing and molding properties for applications like food packaging, laminates, tubes, films, and containers.

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Easily biodegradable polyethylene material that degrades faster than conventional polyethylene due to the addition of natural components that accelerate biodegradation. The polyethylene composition contains a specific blend of polymers, waxes, and biodegradable polymers. The blend includes linear low density polyethylene (LLDPE), polyethylene wax, ultra-high molecular weight polyethylene (UHMWPE), halohalose beeswax complex, microcrystalline cellulose, polyethylene glycol, and polylactic acid. The biodegradable components like halohalose and seaweed collagen provide nutrition for microbes to degrade the plastic, while the LLDPE and UHMWPE provide mechanical strength.

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Resin composition for molded products that suppresses die drool formation when biodegradable polymers are used. The composition contains a specific blend ratio of a low-density bio-polyethylene resin, an ethylene-vinyl alcohol copolymer (EVOH), and additional components like ethylene-vinyl acetate copolymer or acid-modified polymer. The blend ratio is 10-49 parts bio-polyethylene to 51-90 parts EVOH. This prevents die drool during extrusion and improves molded product appearance when using biodegradable polymers.

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Compostable and biodegradable bioplastic made from earth-based plant materials that can replace petroleum-based plastics. The bioplastic composition is a blend of finely powdered components like green ethanol-based polyethylene, calcium carbonate, hemp hards, thermoplastic starch, biodegradable additives, and soy protein. The components are dry-mixed without heat to uniformly blend them into a compostable and biodegradable resin. The bioplastic is strong, flexible, moisture-resistant, and compostable/biodegradable after use. It can replace petroleum plastics in food packaging, films, and containers without harming the environment.

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Producing high density polyethylene (HDPE) with a reduced carbon footprint by using bio-based feedstocks instead of fossil fuels. The bio-based HDPE can have a density of 0.92 g/cm3 or greater and a molecular weight of 300,000 g/mol or more. The bio-based feedstocks can be converted into ethylene and then used to make the HDPE. The bio-based content of the HDPE can be tracked using a mass balance approach. The bio-based HDPE has a lower carbon footprint and can even be carbon neutral or carbon negative.

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Degradable modified polyethylene material with improved mechanical properties and biodegradability compared to existing degradable polymers. The material is prepared by melt blending linear low density polyethylene (LLDPE), starch, chitosan, plant fiber, shell powder, and a silane coupling agent. The plant fiber, shell powder, and coupling agent enhance the mechanical properties without affecting degradability. The plant fiber provides high strength and specific strength. The coupling agent improves interfacial binding between the fillers and polyethylene. The starch adds biodegradability. The silane coupling agent helps compatibility. The blended material has higher strength and elongation compared to LLDPE alone, while still being fully biodegradable.

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Earth-plant based biodegradable and compostable resin composition for producing bioplastics that replaces petroleum-based plastics. The resin composition uses soil-based materials like calcium carbonate, starch, and hemp tow mixed with green ethanol-based polyethylene and biodegradation additive. The soil-plant resin can be used to make bioplastics that are compostable, biodegradable, and non-toxic. The resin composition can be produced by grinding the copolymers into fine powders and mechanically mixing them.

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A biodegradable resin composition for films that provides improved compatibility and mechanical properties compared to conventional biodegradable plastics. The composition contains 10-70 wt% polyethylene, 10-60 wt% biodegradable resin, and 10-50 wt% of either PBAT or maleic anhydride copolymer. The blend composition can be produced by melt blending the components. The composition allows better dispersibility and compatibility of the biodegradable resin in the polyethylene matrix while maintaining mechanical properties. The biodegradable films made from this composition have applications in industries, food, agriculture, and daily life.

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Degradable biomass particle for plastics applications that can rapidly biodegrade without causing excessive waste accumulation. The particle composition is a mix of polyethylene, biomass additives, light suppressants, antioxidants, and dispersants. Adding biomass improves biodegradability, but light suppressants prevent premature degradation in normal conditions. The mixed compound is extruded and dried to form the degradable biomass particles. The particle composition balance allows biodegradation without excessive waste generation.

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Biodegradable plastic compositions containing starch, ground plant waste, a polymer derived from ethylene, vinyl alcohol, or ester, plasticizer, filler, and processing agent. The compositions can be extruded into biodegradable plastics with properties like strength, flexibility, and processability suitable for applications like packaging. The compositions degrade in managed and unmanaged environments, unlike traditional bioplastics. The starch provides biodegradability, the ethylene-vinyl alcohol copolymer adds strength, and the filler improves processability. The plant waste adds biodegradability and reduces environmental impact. The plasticizer enables flexibility. The processing agent aids extrusion.

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Biobased polyethylene for pharmaceutical packaging that reduces carbon footprint and allows recycling. The biobased polymer composition has a low density polyethylene made from ethylene partially derived from renewable sources. This biobased polyethylene has a lower carbon emission factor compared to fossil-based polyethylene. The biobased polymer is biocompatible for use in pharmaceutical packaging like bottles, closures, ampoules, and sealed bags. The biobased polymer composition can be produced using renewable feedstocks like biobased ethanol. This allows recycling and reduces greenhouse gas emissions compared to fossil-based polyethylene.

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Olefin resin composition containing a specific ethylene-based polymer mixture derived from biomass and propylene polymer. The biomass-derived ethylene polymer is made by polymerizing biomass-derived ethylene obtained from biomass-derived ethanol. The composition aims to provide an olefin resin with similar properties to fossil fuel resins but with a specific amount of biomass and lower environmental impact. The biomass-derived ethylene polymer meets requirements like 50% biomass content, melt flow rate, and density.

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Bio-based plastic made from renewable resources like lignin, starch, and thermoplastic polyethylene (TPE). The composition includes 20-80 wt% TPE, 5-40 wt% methylolated lignin, 15-40 wt% starch, 1-10 wt% plasticizer, 1-8 wt% phase solvent, and 1-5 wt% lubricant. The bio-based plastic can be prepared by mixing the components, extruding, and plasticizing. It provides a degradable, recyclable, and resource-efficient alternative to petroleum-based plastics. The bio-based plastic film made from this composition has applications in packaging and agricultural coverings.

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Olefin resin composition containing a biomass-derived ethylene-based polymer and a fossil fuel-derived propylene-based polymer. The biomass-derived ethylene polymer is made from ethylene sourced from biomass like ethanol. The composition has similar properties and applications as conventional olefin resins but with a lower environmental footprint. It aims to replace some fossil fuel-derived resins with biomass-derived ones to reduce reliance on fossil fuels and carbon emissions. The biomass content of the ethylene polymer is 50% or more.

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Biomass compound for filling biomass materials like starch in plastics using a specific polyethylene resin. The compound contains at least 10% biomass material by weight, with the resin including high-density, medium-density, linear low-density, metallocene-based low-density, and ethylene/acetic acid copolymers. The resin composition improves dispersion and blend strength of high biomass filler levels in plastics compared to conventional resins.

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A biodegradable and carbon-neutral plastic made from sugarcane ethanol and a biodegradable additive that forms a biofilm for biodegradation. The process involves blending sugarcane ethanol-based polyethylene with a small amount of a biodegradable additive containing a fungal-bacterial mixture. The blend has properties like biodegradability, recyclability, and food safety while being carbon-neutral. The biodegradable additive promotes biodegradation by forming a biofilm on the plastic that bacteria can use as a carbon source.

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High-density polyethylene (HDPE) composite reinforced with biomass from açaí bark that can be used in various applications like construction and packaging. The composite reduces environmental impact by using açaí bark waste instead of traditional fiber reinforcement. The composite has similar weight and mechanical properties to pure HDPE, but with up to 30% less polymer due to the biomass replacement. This reduces material consumption without significant weight increase. The açaí bark biomass also provides some thermal resistance.

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A process to prepare degradable polyethylene plastics that can degrade into harmless substances in the environment. The process involves hydrolyzing natural materials like starch and cellulose along with glycerin, foaming agent, biological inducer, degradation accelerator, and stabilizer. This hydrolyzed mixture is then blended with thermally dissolved high-density polyethylene, linear polyethylene, and biodegradable polyester to create the degradable polyethylene. The rapid hot melting and mixing steps without particle or block residues enable efficient preparation of the degradable polyethylene.

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A composition for rotomolding applications that improves mechanical strength, flexibility, and finishing of the molded parts. The composition is a blend of polyethylenes with specific melt flow indices and densities. It contains LLDPE (20-40%), HDPE (20-40%), LDPE (0-20%), and LLDPE (20-40%) in those proportions and flow index ranges. The polyethylenes can be from renewable sources like starch, cellulose, sugar, or glycerol.

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