Abstract: A liquid-crystalline resin composition comprising 0.01 to 10 parts by weight of an ultra-high molecular weight polyethylene having a molecular weight of exceed 600,000 and 100 parts by weight of a liquid-crystalline resin that shows an anisotropic liquid-crystalline state in a molten state.

Abstract: A method for producing a liquid crystalline polyester comprising the steps of

Abstract: A thermoplastic resin composition that may be used to form injection molded articles, including automobile interior trim. The thermoplastic resin composition has a crystalline polypropylene as the main component and has a melt flow index of 25 to 35 g/10 minutes and a flexural modulus at 23° C. of not less than 20,000 kg/cm2 and comprises, in specific proportion: (A) A specific crystalline polypropylene; (B) A specific ethylene-butene-1 copolymer rubber, (C) a specific ethylene-propylene copolymer rubber or (D) a specific vinyl aromatic compound-containing rubber; (E) Talc; And optionally, Fibrous magnesium oxysulfate.

Abstract: The invention relates to an aromatic liquid-crystalline polyester solution composition comprising 100 parts by weight of a solvent (A) and 0.

Abstract: According to this invention, there is provided a thermoplastic resin composition using a crystalline polypropylene as the main component, satisfying the impact strength and rigidity required as an automobile interior trim material in respect of physical properties, has high flow and good balance between impact strength and rigidity as compared with conventionally used ethylene-propylene copolymer rubber compositions, and being short in molding cycle and good in surface quality in respect of injection moldability, and further provided an injection molded article using the composition, particularly an injection molded article for automobile interior trim.

Abstract: A high rigidity ethylene-propylene block copolymer which is composed of (I) a crystalline polypropylene portion and (II) an ethylene-propylene random copolymer portion, and in which the crystalline polypropylene portion (I) has a Q value of not more than 5 which is the weight average molecular weight (Mw)/number average molecular weight (Mn) ratio obtained by a gel permeation chromatography (GPC) method, an isotactic pentad fraction of not less than 0.98 as calculated from 13C-NMR, and an intrinsic viscosity of 0.6 to 0.88 dl/g as measured at 135° C. in tetralin; the ethylene-propylene random copolymer portion (II) has an intrinsic viscosity of 4.0 to 6.0 dl/g as measured at 135° C. in tetralin and an ethylene/propylene ratio of 25/75 to 35/65 by weight; and when the total of the above polymers ((I)+(II)) is taken as 100% by weight, the content of the ethylene-propylene random copolymer portion (II) is 8 to 22% by weight, and a process for producing the same.

Abstract: Provided is a liquid crystalline polyester resin for extrusion molding having a solder heat resistant temperature of 250.degree. C. or more, wherein the ratio ((viscosity 2b)/(viscosity 1b)) of the melt viscosity (viscosity 1b) under a shearing speed of 1000/sec at the flow initiation temperature and the melt viscosity (viscosity 2b) under the same shearing speed at a temperature 20.degree. C. higher than the flow initiation temperature is from 0.10 to 0.70. The extrusion molding material of the above-described liquid crystalline polyester resin has excellent heat resistance, and can provide an extrusion molded article, especially a film having excellent appearance.

Abstract: A method for producing a graft copolymer rubber which comprises graft polymerizing an alkenyl aromatic compound to an ethylene-.alpha.-olefin-dicyclopentadiene terpolymer rubber having a Q value of more than 5.0 and Mooney viscosity at 100.degree. C. of 70 or less, in an aqueous suspension in the presence of a free radical initiator and a dispersant, and a polypropylene-based resin composition comprising 5 to 40% by weight of said graft copolymer rubber and 60 to 95% by weight of a polypropylene-based resin(B) selected from the group consisting of a crystalline propylene homopolymer (i) having a Q value of 3.0 to 5.0, isotactic pentad fraction of 0.97 or more and intrinsic viscosity measured in tetralin solution at 135.degree. C. of 0.85 to 1.60 dl/g, a crystalline propylene-ethylene block copolymer (ii) composed of 60 to 95% by weight of apropylene homopolymer portion having a Q value of 3.0 to 5.0, isotactic pentad fraction of 0.97 or more and intrinsic viscosity measured in tetralin solution at 135.degree.

Abstract: A process for producing a semipermeable membrane having a high flux, excellent in solute rejection and useful for reverse osmosis, ultrafiltration and the like which comprises dipping a semipermeable membrane of acrylonitrile polymer containing 40-100% by mole of acrylonitrile in a solution of an amine and/or an alkali, or casting a solution of said polymer containing an amine and/or an alkali to prepare a semipermeable membrane, and optionally, treating the semipermeable membrane thus obtained with plasma.

Abstract: A process for producing a semipermeable membrane having a high flux, excellent in solute rejection and useful for reverse osmosis, ultrafiltration and the like which comprises dipping a semipermeable membrane of acrylonitrile polymer containing 40-100% by mole of acrylonitrile in a solution of an amine and/or an alkali, or casting a solution of said polymer containing an amine and/or an alkali to prepare a semipermeable membrane, and optionally, treating the semipermeable membrane thus obtained with plasma.

Abstract: A method for the preparation of semipermeable membranes which comprises sulfonating porous membranes of acrylonitrile polymers containing acrylonitrile in an amount of 40% to 100% by mole.The resulting semipermeable membrane is very useful for separating substances by reverse osmosis or ultrafiltration.

Abstract: A method for the preparation of semipermeable membrane which comprises exposing porous shaped articles of polysulfone to a plasma.The resulting semipermeable membrane is very useful for separating substances by reverse osmosis or ultrafiltration.