The present invention relates to an adhesive film for a semiconductor, including: a first layer including an adhesive binder and a heat-dissipating filler; and a second layer including an adhesive binder and a magnetic filler, which is formed on at least one surface of the first layer, wherein the adhesive film has a predetermined composition for the adhesive binder included in each of the first layer and the second layer.

Provided are a matting polymer composition having excellent weather resistance and impact resistance, and a matte sheet including the same. The matting polymer composition according to the present disclosure includes two kinds of styrene-acrylonitrile copolymers having different acrylonitrile contents, and a matting agent, and thus, a molded article manufactured by an extrusion or injection process has mechanical properties such as excellent weather resistance and impact resistance, and also may show an effective matting effect and excellent appearance quality.

Provided are a matting polymer composition having excellent weather resistance and impact resistance, and a matte sheet including the same. The matting polymer composition according to the present disclosure includes two kinds of styrene-acrylonitrile copolymers having different acrylonitrile contents, and a matting agent, and thus, a molded article manufactured by an extrusion or injection process has mechanical properties such as excellent weather resistance and impact resistance, and also may show an effective matting effect and excellent appearance quality.

The present invention relates to a method for producing a carbon fiber. In the method for producing the carbon fiber, a high pure acrylonitrile monomer with specific contents of impurities and a comonomer are used to produce an acrylonitrile copolymer, and the acrylonitrile copolymer is subjected to a spinning operation, a stretching operation, an oxidation treatment and a carbonization treatment in sequence, for obtaining the carbon fiber. The acrylonitrile copolymer with an appropriate falling-ball viscosity and an appropriate weight-average molecular weight is beneficial to the spinning operation, thereby reducing an inner pore diameter and enhancing strength of the resulted carbon fiber.

The present invention relates to a method for producing a carbon fiber. In the method for producing the carbon fiber, a high pure acrylonitrile monomer with specific contents of impurities and a comonomer are used to produce an acrylonitrile copolymer, and the acrylonitrile copolymer is subjected to a spinning operation, a stretching operation, an oxidation treatment and a carbonization treatment in sequence, for obtaining the carbon fiber. The acrylonitrile copolymer with an appropriate falling-ball viscosity and an appropriate weight-average molecular weight is beneficial to the spinning operation, thereby reducing an inner pore diameter and enhancing strength of the resulted carbon fiber.

Filled polyol compositions that include a dispersion of polymer particles in a base polyol, in which the filled polyol composition further includes a triazole antioxidant. Methods for producing such filled polyol compositions are also described, as well as use of such filled polyol compositions in the production of polyurethane foams.

Filled polyol compositions that include a dispersion of polymer particles in a base polyol, in which the filled polyol composition further includes a triazole antioxidant. Methods for producing such filled polyol compositions are also described, as well as use of such filled polyol compositions in the production of polyurethane foams.

The invention relates to an acrylonitrile copolymer binder and application thereof in lithium ion battery, belonging to the field of lithium ion battery. The technical problem to be solved by the invention is to provide an acrylonitrile copolymer binder comprising the following structural units in percentage by weight: 78-95% of acrylonitrile unit, 1-10% of acrylic ester unit and 2-15% of acrylamide unit. For the binder of the invention, acrylonitrile monomer is taken as the main body, and acrylic ester monomer, acrylamide monomer or acrylate salt monomer with strong polarity is added to acrylonitrile for copolymerization to enable the flexibility of a polymer membrane, the affinity of an electrolyte and the proper swelling degree in the electrolyte while keeping strong adhesion or intermolecular force of acrylonitrile polymer molecules, so as to fit the periodic volume changes of electrode active materials along with lithium ion intercalation/deintercalation in charging and discharging processes, thereby improving the energy density and cycle performance of the lithium ion battery.

The invention relates to an acrylonitrile copolymer binder and application thereof in lithium ion battery, belonging to the field of lithium ion battery. The technical problem to be solved by the invention is to provide an acrylonitrile copolymer binder comprising the following structural units in percentage by weight: 78-95% of acrylonitrile unit, 1-10% of acrylic ester unit and 2-15% of acrylamide unit. For the binder of the invention, acrylonitrile monomer is taken as the main body, and acrylic ester monomer, acrylamide monomer or acrylate salt monomer with strong polarity is added to acrylonitrile for copolymerization to enable the flexibility of a polymer membrane, the affinity of an electrolyte and the proper swelling degree in the electrolyte while keeping strong adhesion or intermolecular force of acrylonitrile polymer molecules, so as to fit the periodic volume changes of electrode active materials along with lithium ion intercalation/deintercalation in charging and discharging processes, thereby improving the energy density and cycle performance of the lithium ion battery.

A polymer latex is described for the preparation of an elastomeric film obtained by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising: a) 15 to 99 wt.-% of conjugated dienes; b) 0 to 80 wt.-% of ethylenically unsaturated nitrile compounds; c) 0 to 70 wt.-% of vinyl aromatic monomers; the sum of ethylenically unsaturated nitrile compounds b) and vinyl aromatic monomers c) being 0.95 to 84.95 wt.-% d) 0.05 to 10 wt.-% of ethylenically unsaturated acids wherein the ethylenically unsaturated acids comprise d1) an ethylenically unsaturated acid comprising an acid functional group; and a spacer group separating the ethylenically unsaturated group and the acid functional group by at least 4 atoms; and e) 0 to 65 wt.-% of co-polymerizable ethylenically unsaturated compounds,
wherein monomers a) to e) are as defined.