382 results about "Ethylenevinylacetate copolymer" patented technology

Disclosed are high frequency-active blends comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene / vinyl acetate copolymers, ethylene / alkyl (meth)acrylate copolymers and ethylene / (meth)acrylate / carbon monoxide terpolymers; and films, powders, multilayer structures, and articles prepared therefrom.

A hot melt adhesive composition comprising: (a) a functional copolymer obtained from copolymerization of ethylene and a comonomer selected from maleic anhydride, citraconic anhydride, itaconic anhydride, tetrahydrophthalic anhydride, maleic acid, citraconic acid, itaconic acid, fumaric acid, tetrahydrophthalic acid, the corresponding salts, monoesters and diesters of these acids, and mixtures of any of these, wherein the functional copolymer is present in an amount from about 5 to about 95 weight % of the combined total amount of (a) and (b); and (b) at least one ethylene copolymer obtained from copolymerization of ethylene with a polar monomer wherein said polar comonomer is present in the copolymer in an amount of from 8 to 40 weight %, wherein said ethylene copolymer is selected from the group consisting of ethylene / vinyl acetate copolymers, ethylene / alkyl (meth)acrylate copolymers and ethylene / alkyl (meth)acrylate / carbon monoxide terpolymers, in an amount from about 5 to about 95 weight % of the combined total amount of (a) and (b); wherein the composition has a melt index of 100 grams / 10 minutes or higher. Articles comprising and process using the hot melt adhesive are also disclosed.

Disclosed are compositions comprising ethylene / vinyl acetate copolymers, tackifying resins and optionally polyolefins (for example, polyethylene and polypropylene) that provide strong, tight hermetic heat seals with an easily peelable opening feature to fluoropolymers such as polychlorotrifluoroethylene. Also disclosed are multilayer structures and packages comprising these compositions.

Tie-layer adhesives for styrene polymer resins are provided. The adhesive blend compositions are comprised of ethylene-vinyl acetate copolymer, styrene-butadiene-styrene triblock copolymer, ethylene-propylene rubber and graft-modified polyethylene.

Bioactive-coated medical devices are provided, including coated vascular stents. The medical device coating can include a coating layer posited over at least a portion of the medical device surface, and can include a butyl methacrylate polymer or an ethylene-vinyl acetate copolymer in combination with a bioactive material that can function as both an immunosuppressive agent and an antiproliferative agent. Optionally, multilayer coatings can further include an adhesion promoting layer comprising parylene positioned between the coating layer and the medical device surface, a porous layer comprising butyl methacrylate positioned over at least a portion of the coating layer, or both. The coating layer preferably comprises between about 0.5 and 2.0 μg / mm2 of the bioactive material on the outer surface of the medical device. The bioactive material can be absorbed into the coating layer, which can have a thickness of between about 0.5 μm to about 5 μm.

A golf glove for increasing the flying distance of golf ball has an insert that provide a repulsion forces to the grip of a golf club when the head of the club impacts a golf ball. The insert is made of synthetic elastomer such as polyurethane, silicon rubber, EVA (Ethylene Vinyl Acetate copolymer, EMA (Ethylene Methyl Acetate copolymer), or EAA (Ethylene Acrylic Acetate copolymer). The insert has a planar shape that fits to the concave inner surface of human palm. The insert is firmly attached to the inner surface of the palm side of a golf glove.

Disclosed is an acoustic backing composition comprising an ethylene-vinyl acetate copolymer containing 20 to 80% by weight of the vinyl acetate units and a filler contained in the ethylene-vinyl acetate copolymer.

An object of the present invention is to provide an adhesive resin composition which displays excellent adhesive strength on bonding to a barrier material, during initial adhesion, durable adhesion, and even after soak in fuel oil, and which also has excellent moldability. Furthermore, another object of the present is to provide an adhesive resin composition which when recycled, displays good compatible in a regrind layer with polyethylene resins and barrier materials such as saponified products of ethylene-vinyl acetate copolymers or polyamide based resins, and which is consequently capable of suppressing deterioration in the low temperature impact resistance of a multi-layer vessel containing a regrind layer. In order to achieve these objects, the present invention provides an adhesive resin composition (C) comprising (A) 100 to 5% by mass of a modified polyethylene in which an unsaturated carboxylic acid and / or an unsaturated carboxylic acid derivative unit is grafted to a high molecular weight polyethylene with a melt flow rate (MFR: temperature 190° C., loading 2.16 kg) of 0.1 to 2.0 g / 10 minutes, and a density of 0.91 to 0.96 g / cm3, and (B) 0 to 95% by mass of an unmodified polyethylene with a melt flow rate (MFR: temperature 190° C., loading 2.16 kg) of 0.1 to 20 g / 10 minutes, and a density of 0.86 to 0.96 g / cm3, wherein the density of the adhesive resin composition (C) is 0.925 to 0.940 g / cm3, the content of the unsaturated carboxylic acid and / or unsaturated carboxylic acid derivative unit incorporated therein is at least 0.09% by mass, and the melt flow rate (MFR: temperature 190° C., loading 2.16 kg) is from 0.1 to 2 g / 10 minutes.

A co-extruded tubing for the administration of intravenous fluids has an outer layer of a polyester. An inner fluid-contact layer may be of a polyethylene or of a thermoplastic polyurethane. Where the inner fluid-contact layer is of polyethylene, an intermediate tie layer of ethylene-vinyl acetate copolymer may be included to prevent delamination.

Ethylene vinyl acetate compositions that have been partially crosslinked using organic peroxides are disclosed, as well as methods for their production. The crosslinked compositions have low melt index values and increased tensile strength, leading to flexibility and heat resistant properties.

The present invention relates to a thermoplastic resin composition which excels in impact resistance, dimension stability and rigidity, and also excels in appearance, fluidity and paint film adhesion property, and further which is very useful as manufacturing materials for exterior parts of automobile. A thermoplastic resin composition comprising component (A): a polyamide resin; component (B): a hydrogenated product of block copolymer comprising vinyl aromatic polymer block (a) and conjugated diene based polymer block (b), and / or ethylene-α-olefin based block copolymer; component (C): a modified hydrogenated product of block copolymer comprising the vinyl aromatic polymer block (a) and the conjugated diene based polymer block (b), which hydrogenated product is modified by addition of an unsaturated acid and / or derivative thereof; component (D): a plate-like and / or needle-like inorganic filler; and component (F): an ethylene-vinyl alcohol copolymer and / or a partial saponified product of ethylene-vinyl acetate copolymer.

A transdermal patch containing a drug comprising formoterol and / or a salt, a solvent for the drug, a pressure-sensitive adhesive comprising an ethylene / vinyl acetate copolymer resin and at least one of a filler and a plasticizer. The patch is substantially water-free. The patch serves to promote percutaneous absorption of the formoterol and / or a salt thereof and allow the efficacy of the drug to stably persist for a long period of time. The patch is thus effective for diseases such as asthma, which can be cured or prevented by exciting beta-receptors.

A sheet for solar cell encapsulant including (A) an ethylene copolymer selected from 1a to 5a; and (B) an ethylene copolymer selected from 1b to 3b, the copolymer (A) having a melting point of 90° C. or higher and containing constituent unit derived from ethylene [1a: ethylene-vinyl acetate (VA) copolymer, 2a: ethylene-acrylate copolymer, 3a: high-pressure method low-density polyethylene, 4a: ethylene-α-olefin copolymer, 5a: ethylene-G(M)A copolymer other than the below-described 1b, 1b: ethylene-G(M)A copolymer, 2b: ethylene-VA-G(M)A copolymer, 3b: ethylene-acrylate-G(M)A copolymer]. In the ethylene copolymer (B), the total ratio of the constituent unit derived from glycidyl(meth)acrylate (G(M)A) is preferably from 2% to 30% by mass. As a result of this, crosslinking treatment is substantially unnecessary, and practical adhesion and adhesion stability are achieved without heat treatment for crosslinking.

A hot melt adhesive composition includes ethylene vinyl acetate copolymer(s) having average vinyl acetate content of from about 10% to about 30%, styrene-ethylene-butylene-styrene block copolymer, tackifying resin, and optionally, a plasticizer or a wax.

Non-halogen flame-resistant thermoplastic elastomer composition, manufacturing method, and an electric wire or cable in which non-halogen flame-resistant thermoplastic elastomer composition is used for an insulator or a sheath are provided. Non-halogen flame-resistant thermoplastic elastomer composition includes (A) 40 to 80 parts by weight of ethylene-vinyl acetate copolymer, in which the content of vinyl acetate is 30 wt % or more; (B) 60 to 20 parts by weight of crystalline polyolefin resin; and (C) 40 to 250 parts by weight of metalhydroxide for 100 parts by weight in total of (A) and (B). Further, ethylene-vinyl acetate copolymer is cross-linked with silane.

The invention provides a formula of a high temperature resistant hot melt adhesive and a processing process of the hot melt adhesive. The formula comprises the following components: polyamide, an ethylene-ethyl acrylate copolymer, an ethylene-vinyl acetate copolymer, a tackifier, an antioxidant and a modifier. The high temperature resistant hot melt adhesive is high in bonding strength, resistant to high temperature, excellent in insulating and sealing performance, resistant to a low temperature, environment-friendly, non-toxic, simple in production process and good in repeatability.

Methods of making a foam article comprise the steps of compressing a foam at an elevated temperature in a mold for shaping the foam; and cooling the mold to a temperature greater than room temperature, wherein the foam comprises at least one ethylene / α-olefin block interpolymer. The foam may further comprise an ethylene vinyl acetate copolymer and an additive such as a filler or a crosslinking agent. The ethylene / α-olefin block interpolymers are a multi-block copolymer comprising at least one soft block and at least one hard block.

The invention relates to a construction element which has advantages over regular concrete elements by being much lighter, stronger and less expensive. The element comprises at least 15% by weight of cement, particulate filler material, ethylene-vinylacetate copolymer binder and optionally cellulose ether and PYA binder. The filler material may be selected from particulate wood, particulate elastomeric material, fiyash, crushed rock, cellulosic materials or sand. The invention also relates to a slurry mixture for producing the construction element. The said element may have a variety of shapes, such as sheets, bricks, beams, blocks, panels and boards.

The invention provides low-temperature resistant hot melt adhesive and a processing technology of the low-temperature resistant hot melt adhesive. The low-temperature resistant hot melt adhesive comprises the following components: polyamide, an ethylene vinyl acetate copolymer, an ethylene-acrylate-maleic anhydride terpolymer, wax, tackifying resin and an antioxidant. The low-temperature resistant hot melt adhesive is high in adhesive strength, excellent in insulating seal performance, environmentally-friendly, nontoxic, simple in production technology and high in repeatability, and is mainly applicable to places requiring high low-temperature performance.

According to the present invention, a display strip with which the process of attaching product-enclosed bags can easily be automated and from which the product-enclosed bags can easily be detached without having their appearance degraded and a display strip and product assembly can be provided. The display strip according to the present invention is utilized to hold and align a plurality of product-enclosed bags vertically for the display. It comprises at least a substrate layer and a sealant layer with the sealant layer containing an ethylene-vinyl acetate copolymer and an adhesive promoting tackifier.

A wax composition comprising a high molecular weight aliphatic alcohol, a low molecular weight ethylene vinyl acetate copolymer, at least one odorant, and a wax. The odorant is substantially retained in the wax composition when the wax composition is exposed to temperatures below a melting point of the wax composition. Furthermore, the odorant is emitted from the wax composition when the wax composition is exposed to temperatures at or above the melting point of the wax composition.

An improved pet toy has a toy body composed of polyolefin having good flexibility and resiliency, which is an ethylene vinylacetate copolymer. The pet toy can be cylindrical in shape, toroidal in shape, spherical in shape, or can have a saucer-shape having an aerodynamic form for gliding.

The invention provides a formula and a production process of a dual-layer thermal shrinkage-chilling shrinkage composite sleeve which comprises an inner sleeve and an outer sleeve, wherein the inner sleeve comprises an ethylene vinyl acetate copolymer, low-density polyethylene, a maleic anhydride grafted polymer, a surface treatment ultrathin active magnesium hydroxide, surface treatment ultrathin active aluminium hydroxide, a lubricating agent, an antioxygen, a light stabilizer and a sensitive cross-linking agent; and the outer sleeve comprises ethylene propylene diene monomer, ultrathin surface treatment active kaoline, ultrathin surface treatment active talcum powder, a lubricating agent and colorant. The dual-layer thermal shrinkage-chilling shrinkage composite sleeve obtained by the production process has no gap between the inner sleeve and the outer sleeve and high connection reliability; and the inner sleeve has good elasticity, weather resistance, ozone resistance, heat resistance, acid and alkaline resistance, water vapor resistance, corona resistance and high electric insulation property.

A resin composition, containing: (A) polyolefin; (B) a saponified ethylene-vinyl acetate copolymer having an ethylene content of from 20 to 65 mol % and a degree of saponification of vinyl acetate units of 96% or more; (C) a saponified ethylene-vinyl acetate copolymer having an ethylene content of from 68 to 98 mol % and a degree of saponification of vinyl acetate units of 20% or more; and a pigment (E), wherein a mass ratio (A / B) is from 3 to 99.5, a mass ratio (B / C) is from 1 to 100, a mass ratio (E / C) is from 0.04 to 50, and a content of (C) is from 0.01 to 2.4 parts by mass based on 100 parts by mass of (A) and (B). A molded product, in particular a multilayered structure, obtained by melt molding the resin composition has good dispersibility of the pigment, and improved uneven coloration.

An asphalt binder is provided, comprising 85 to 97.5 parts by weight of a bitumen and 16 to 2.5 parts by weigh of a polymer composition, wherein the polymer composition comprises:(i) from 2 to 8, preferably from 3 to 6 parts by weight of a styrenic block copolymer having at least two blocks of monovinylaromatic hydrocarbon (A) and at least one block of a conjugated diene (B), wherein the block copolymer composition has a vinyl content of at least 25% by weight, preferably from 25 to 40% by weight, based on the total diene content;(ii) from 0 to 5, preferably from 1 to 3 parts by weight of a styrenic diblock copolymer having one block of monovinylaromatic hydrocarbon (A) and one block of a conjugated diene (B); and(iii) from 0.5 to 3, preferably from 1 to 2.5 parts by weight of an ethylene-vinyl acetate copolymer,wherein the weight ratio of (i)+(ii):(iii) is from 2:1 to 6:1, preferably from 3:1 to 4:1. In addition, an asphalt mix is provided comprising 2 to 8 parts by weight of the asphalt binder of the present invention and 98 to 92 parts by weight of gap-graded aggregate or open-graded aggregate material.Furthermore, a porous pavement is claimed, produced from the open or gap-graded mixes, by compacting the asphalt mix mentioned above.

Provided is a sheet for a solar cell encapsulant containing (A) an ethylene-based polymer having a melting point of 90° C. or higher and containing an ethylene-derived constituent unit as a main component; (B) an ethylene-vinyl acetate copolymer having a vinyl acetate-derived constituent unit at a content ratio of from 19% to 40% by mass; and (C) a silane coupling agent having an amino group. The sheet for solar cell encapsulant has the excellent transparency and flexibility possessed by an ethylene-vinyl acetate copolymer. Furthermore, a crosslinking treatment is substantially unnecessary, and adhesiveness and adhesion stability that are appropriate for practical use are obtained.

A synthetic resin composition for forming an article, such as a container or bag for garbage, or electrical wiring insulation, which repels animals such as rodents, opossum, cats, dogs, and birds. The composition includes a thermoplastic polymer and from 10 to 15,000 ppm by weight of an odorant compound such as a salicylic acid ester, menthol, corn mint oil, eucalyptus oil, and camphor, and combinations thereof. The resin composition may comprise more than one thermoplastic polymer, polyethylene and ethylene / vinyl acetate copolymer being preferred first and second thermoplastic polymers, respectively. In a method for forming the synthetic resin composition, the compound is added to the second polymer in a ratio of about 1:2 parts by weight to form a master blend that then is added to an amount of the first polymer at a master blend percentage of about 1.5%.

A halogen-free flame-retardant cable includes a multi-core twisted wire including a plurality of insulated wires twisted together, the plurality of insulated wires each including a conductor and an insulation layer on an outer periphery of the conductor, an inner layer formed on an outer surface of the multi-core twisted wire, and an outer layer formed on the inner layer. The outer layer includes a resin composition including not less than 30 parts by mass of a flame retardant with respect to 100 parts by mass of thermoplastic polyurethane (TPU). The inner layer includes a resin composition comprising an ethylene-vinyl acetate copolymer (EVA) with a vinyl acetate (VA) content of not less than 33%, and the outer layer is subjected to cross-linking treatment.