摘要:
Provided is a film for thermal sterilization packaging which is excellent in a total balance of characteristics such a transparency, an impact resistance, a heat sealing property, a blocking resistance, a heat resistance and the like.The film for thermal sterilization packaging according to the present invention is characterized by comprising: an outer layer containing a propylene/ethylene block copolymer (A) which has a melt flow rate (MFR; ASTM D1238, 230° C., load: 2.16 kg) in the range of 1 to 10 g/10 minutes and a melting point in the range of 150 to 170° C. measured by means of a differential scanning colorimeter. (DSC) and which is constituted from 90 to 80% by weight of a part (Dinsol) insoluble in n-decane at room temperature satisfying the specific requisites and 10 to 20% by weight of a part (Dsol) soluble in n-decane at room temperature satisfying the specific requisites and an intermediate layer or an outer layer containing a propylene/ethylene block copolymer (B) which is not the same as the above propylene/ethylene block copolymer (A).
摘要:
A nitrile resin composition having excellent transparency, antistatic properties and practical physical properties. The composition comprises (A) 80 to 97 wt. % of a nitrile resin which is obtained by graft copolymerization, in the presence of 3 to 30 parts by weight of a rubbery polymer containing at least 50 wt. % of a conjugated diene unit, of 100 parts by weight of a monomer mixture containing an unsaturated nitrile and an alkyl methacrylate, and has, as a matrix component, 65 to 80 wt. % of an unsaturated nitrile unit and 20 to 35 wt. % in total of an alkyl (meth)acrylate unit and a unit of a further monomer copolymerizable with the unsaturated nitrile and alkyl (meth)acrylate; and (B) 3 to 20 wt. % of a polyether ester amide, wherein the ratio of the melt viscosity of the component (A) to that of the component (B) at 210.degree. C. is 0.5 to 5 at a shear rate of 10.sup.2 sec.sup.-1 and 0.5 to 3 at a shear rate of 10.sup.3 sec.sup.-1 and the difference of the refractive index between the matrix component (A) to the component (B) is 0.2 or less.
摘要:
Packaging propylene resin compositions are excellent in balance in high transparency, rigidity, low-temperature impact resistance and blocking resistance. Retort films, protective films, medical container packaging films and freshness-keeping films, and sheets for similar purposes are obtained from the compositions. A packaging propylene resin composition includes a propylene polymer (A) satisfying specific requirements and a propylene/ethylene copolymer (B) satisfying specific requirements. In another packaging propylene resin composition, Dinsol and Dsol satisfy specific requirements.
摘要:
A nitrile resin for a carrier resulting from graft-copolymerization of 100 parts by weight of a monomer mixture containing unsaturated nitrile and alkyl acrylate in the presence of 1 to 30 parts by weight of a rubber-like polymer containing 50% by weight or more of conjugated diene units. The nitrile resin comprises having a glass transition temperature of 50 to 69.degree. C., having a matrix component except rubber ingredient containing 45 to 80% by weight of unsaturated nitrile units and 20 to 55% by weight of alkyl acrylate units and having a weight average molecular weight of 30,000 to 150,000. The invention further relates to a preparation process of nitrile resin and an electrophotographic carrier containing the nitrile resin. The nitrile resin for a carrier of the invention has an excellent processing ability in the carrier preparation step and good balance of electrostatic charge stability of the carrier. Consequently, the resin is highly suitable for use in the electrophotographic carrier.
摘要:
Provided is a film for thermal sterilization packaging which is excellent in a total balance of characteristics such a transparency, an impact resistance, a heat sealing property, a blocking resistance, a heat resistance and the like.The film for thermal sterilization packaging according to the present invention is characterized by comprising: an outer layer containing a propylene/ethylene block copolymer (A) which has a melt flow rate (MFR; ASTM D1238, 230° C., load: 2.16 kg) in the range of 1 to 10 g/10 minutes and a melting point in the range of 150 to 170° C. measured by means of a differential scanning colorimeter. (DSC) and which is constituted from 90 to 80% by weight of a part (Dinsol) insoluble in n-decane at room temperature satisfying the specific requisites and 10 to 20% by weight of a part (Dsol) soluble in n-decane at room temperature satisfying the specific requisites and an intermediate layer or an outer layer containing a propylene/ethylene block copolymer (B) which is not the same as the above propylene/ethylene block copolymer (A).
摘要:
A heat-resistant high-nitrile polymer composition obtained by the graft copolymerization of 100 parts by weight of a monomer mixture comprising 50 to 80% by weight of an unsaturated nitrile monomer, a maleimide monomer, an aromatic vinyl monomer, and a monomer copolymerizable with the foregoing monomers, in the presence of 1 to 40 parts by weight of a conjugated diene-based synthetic rubber containing not less than 50% by weight of a conjugated diene monomer unit, wherein the concentration of residual maleimide monomer in the polymer composition is not greater than 200 ppm by weight. This polymer composition is suitable for use as a molding material for extrusion molding, blow molding, injection molding and the like, and is useful in applications which require gas barrier properties, chemical resistance, non-adsorptive properties and the like, and which require use in automobiles, heat resistance sufficient for heat filling, and safety and hygienic properties.