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6728 results about "Ethylene-vinyl acetate" patented technology

Ethylene-vinyl acetate (EVA), also known as poly (ethylene-vinyl acetate) (PEVA), is the copolymer of ethylene and vinyl acetate. The weight percent vinyl acetate usually varies from 10 to 40%, with the remainder being ethylene.

Environmentally friendly polylactide-based composite formulations

Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials, and processes for preparing the polymeric materials, are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer, and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride, polyethylene glycol, polyglycolide, ethylene vinyl acetate, polycarbonate, polycaprolactone, polyhydroxyalkanoates, or polyolefins modified with polar groups, for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable oil and is typically present in an amount of between about 10 and about 50% by weight. In some embodiments, the compatibilizer is a polyolefin modified with one or more polar functional groups, and is typically present in an amount of between about 5 and about 10% by weight. The material can be used in decorative surface coverings, such as a floor coverings, particularly when it is in the form of a polymeric sheet. The polymeric material can be present in at least one layer of a floor covering, which floor covering can also include one or more additional layers such as wear layers, foamed or foamable layers, top coat layers and design layers. The additional layers can also include the polymeric material.
Owner:AFI LICENSING

Image receptor medium containing ethylene vinyl acetate carbon monoxide terpolymer

An image receptor medium including an image reception layer having two major opposing surfaces. The image reception layer comprises a terpolymer of ethylene vinyl acetate carbon monoxide, optionally blended with at least one other polymer that can be wherein the image reception layer further comprises at least one other polymer blended with the terpolymer, wherein the other polymer is selected from the group consisting of ethylene vinyl acetate resins, ethylene (meth)acrylic acid copolymer resins, polyethylene resins, polypropylene resins, ionomers, acid-modified or acid/acrylate modified ethylene vinyl acetates and a polymer comprising at least two monoethylenically unsaturated monomeric units, wherein one monomeric unit comprises a substituted alkene where each branch comprises from 1 to about 8 carbon atoms and wherein one other monomeric unit comprises a (meth)acrylic acid ester of a nontertiary alkyl alcohol in which the alkyl group contains from 1 to about 12 carbon atoms and can include heteroatoms in the alkyl chain and in which the alcohol can be linear, branched, or cyclic in nature, and combinations of such other polymers thereof. Alternatively, the image receptor medium includes a substrate layer comprising a polymer substrate layer having two major opposing surfaces and an image reception layer on a first major surface of the substrate layer. The image reception layer has an outer surface for receiving images, and comprises a terpolymer identified above. Either embodiment of the image receptor medium may further include an optional prime layer, an optional adhesive layer, and an optional inkjet layer.
Owner:3M INNOVATIVE PROPERTIES CO

Non-crosslinking halogen-free flame-retardant cable insulating material or sheath material and preparation method thereof

The invention discloses a non-crosslinking halogen-free flame-retardant cable insulating material or sheath material, comprising the following components in part by weight: 100 parts of ethylene and ethylene copolymer and/or ethylene propylene diene monomer, 0-20parts of compatilizer, 20-250 parts of halogen-free flame retardant, 0-5 parts of antioxidant, 0-5 parts of lubricating agent, 0-40 parts of polymeric elastomer, 0-3 parts of coupling agent, and 0-20parts of color master batch, wherein the ethylene and ethylene copolymer are selected from one or more of the following materials: ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer and the like. According to the halogen-free flame-retardant cable insulating material or sheath material, the insulating layer or the sheath layer prepared by the uncrosslinked halogen-free flame-retardant cable insulating material or sheath material can be adaptive to the environment at -40 to 80 DEG C, and the material can not generate poisonous gases such as halogen hydride in case of fire, so that harm to lives and property loss can not be caused by the poisonous gases such as halogen hydride; and besides, the production cost of the material is low.
Owner:SHENZHEN WOER NEW ENERGY ELECTRICAL TECH CO LTD

Ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable material and method for preparing ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable insulating or sheathing layer from same

ActiveCN102153802AEnhanced cross-linking efficiencyIncreased uniform photocrosslinking depthPlastic/resin/waxes insulatorsInsulated cablesCross-linkPolyolefin
The invention relates to ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable material and a method for preparing an ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable insulating or sheathing layer from the same. The method comprises the following steps: adding a metal hydroxide flame retardant, a cationic photoinitiator, a free radical photoinitiator, a multi-functional cross-linking agent, a compound antioxidant, a flame-retardant synergist, a synergistic smoke suppressant and a processing aid to polyethylene or grafted and modified polyethylene and / or ethylene vinyl acetate or grafted and modified copolymer thereof which are used as base materials, compounding, mixing the materials uniformly according to the proportion, granulating, extruding to prepare the ultraviolet-light cross-linked halogen-free flame-retardant polyolefin cable insulating or sheathing layer, and immediately irradiating with a specific ultraviolet-light source to obtain the deeply cross-linked halogen-free flame-retardant polyolefin cable insulating or sheathing layer. The cross-linking equipment used for preparing the novel material by using anovel technology has low investment, and the process is simple and environmental friendly, saves energy, ensures high production efficiency and low cost and good quality of product and can be widely used for producing high-performance special wire and cable products and the like.
Owner:HEILONGJIANG MINGXIANG TECH

High temperature self-crosslinking halogen-free flame retardant cable insulation material or sheath material and method for preparing high temperature self-crosslinking halogen-free flame retardant cable insulation material or sheath material

The invention discloses a high temperature self-crosslinking halogen-free flame retardant cable insulation material or sheath material. The cable insulation material or sheath material comprises the following components in parts by weight: 100 parts of ethylene and copolymer thereof and / or ethylene propylene diene monomer, 0-20 parts of compatilizer, 20-250 parts of halogen-free flame retardant, 0-5 parts of antioxidant, 0-5 parts of lubricating agent, 0.01-5 parts of peroxide crosslinking agent, 0-40 parts of polymer elastomer, 0-3 parts of coupling agent and 0-20 parts of color masterbatch; and the ethylene and the copolymer thereof are selected from one or a plurality of the following materials of ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate and the like. The high temperature peroxide crosslinking agent crosslinks under the temperature condition of above 150 DEG C only, during a cable material mixing extrusion and insulating layer or sheath layer formation process, chemical crosslinking or micro-crosslinking cannot be caused, but the high temperature peroxide crosslinking agent generates a crosslinking function when the temperature is higher than 150 DEG C in the case of fire, so that the production cost is lowered.
Owner:SHENZHEN WOER HEAT SHRINKABLE MATERIAL +1

Filler masterbatch used for increasing polarity of polypropylene and preparation method thereof

The invention discloses a filler masterbatch used for increasing the polarity of polypropylene and a preparation method thereof. The filler masterbatch is characterized by comprising the following components by weight percent: 50%-79% of inorganic filler, 15%-30% of carrier, 5%-17% of polar additive and 1%-3% of processing additive; and the polar additive is one or more of thermoplastic polyurethane resin (TPU), maleic anhydride grafted polypropylene, epoxy resin, ethylene acrylate, ethylene vinyl acetate, polyether amine and polybutylene polyol. In the preparation method of the invention, the added carrier can not improve the polarity of polypropylene, the inorganic filler is used to increase the rigidity of the material; the key is to introduce the polar additive with high unipolarity, thus the filler masterbatch used for increasing the polarity of polypropylene can be prepared; when the filler masterbatch is combined with the polypropylene material for production, the surface polarity of the filled and modified polypropylene material can be increased, the surface energy of the filled and modified polypropylene can be reduced, the dimension stability can be increased, the modified polypropylene material can have good paint adhesion and the material can be used to form exterior trimming parts such as bumpers and interior trimming parts such instrument panels.
Owner:KINGFA SCI & TECH CO LTD +3

Ultraviolet crosslinked expansion type flame-retardant polyolefin cable insulation sheath material and preparation thereof

The invention discloses an insulating and sheathing material of ultraviolet light crosslinking expanding type phosphorus nitrogen flaming resistance polyolefine cables and a preparation method thereof. The invention is characterized in that polyethylene/PEMA and/or ethylene vinyl acetate or maleic anhydride grafted ethylene vinyl acetate or acid amide grafted ethylene vinyl acetate copolymer are taken as base, added with expanding type phosphorus nitrogen halogen-free flame retardants, light trigger, polyfunctional group cross linker and chemical inhibitor and matched with flaming retardant synergistic agent, antismoke agent and processing aid, and then squeezed out and pelleted into photo-crosslinking flame retardant cable materials; and then the flame retardant cable materials are melted and extruded on a cable conductor wire core and clad into an insulating layer and a sheathing layer; hereupon the ultraviolet light irradiation crosslinking is carried on the insulating layer or the sheathing layer. Via detecting, the oxygen index of the insulating layer or the sheathing layer is larger than 30%, the vertical flaming experiment passes through UL-94 V0 level, the tensile strength is larger than 12Mpa, the elongation at break is larger than 350%, and the electric volume resistivity is larger than 8*10 omega.cm.
Owner:HONGLONGJIANG ORIENT SCI & TECH +1
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