Abstract: To provide a novel polarizing plate that suppresses poor appearance caused by thermal shrinkage of a polarizing film and is excellent in durability. There is provided a polarizing plate including: a polarizing film composed of a polyvinyl alcohol-based resin; and a translucent support substrate laminated on at least one surface of the polarizing film through a bonding layer, in which the bonding layer is composed of a molecular bonding agent that bonds the polarizing film and the support substrate by a chemical bond.

Abstract: An aliphatic polyester polyether copolymer is provided having an aliphatic polyester moiety comprising 35 to 50 molar % of an aliphatic diol unit, 35 to 50 molar % of an aliphatic dicarboxylic acid unit and 0 to 30 molar % of an aliphatic oxycarboxylic acid unit and a polyether moiety, wherein ?sp/C is not less than 1.40 and the ratio by weight of the polyether moiety to the aliphatic polyester polyether copolymer is 0.1 to 90% by weight.

Abstract: The object of the present invention is to provide an aliphatic polyester polyether copolymer having biodegradability and a sufficient mechanical strength for practical use. An aliphatic polyester polyether copolymer having an aliphatic polyester moiety comprising 35 to 50 molar % of an aliphatic diol unit, 35 to 50 molar % of an aliphatic dicarboxylic acid unit and 0 to 30 molar % of an aliphatic oxycarboxylic acid unit and a polyether moiety, wherein ?sp/C is not less than 1.40 and the ratio by weight of the polyether moiety to the aliphatic polyester polyether copolymer is 0.1 to 90% by weight.

Abstract: A modified polyolefin resin composition according to the present invention comprises a polyolefin resin modified with an unsaturated carboxylic acid and is suitable for imparting a good adhension property.

Abstract: A hydrophilic resin composition comprising a water-absorptive resin (component A), a thermoplastic modified ethylene polymer (component B), and, if desired, a thermoplastic polymer (component C) which is different from the component B, the water-absorptive resin (component A) being present in an amount of 0.1 to 70% by weight of the total amount of the components A to C, the component A being uniformly dispersed in the thermoplastic polymers (components B+C), in the form of particles having an average particle diameter of 5 .mu.m or less.A process for producing a hydrophilic resin composition, comprising kneading a water-absorptive resin containing water (component A) whose water content is 25 to 80% by weight to obtain a rubber-like resin, incorporating a modified ethylene polymer (component B), and, if desired, a thermoplastic polymer (component C) and an additive (component D) into the rubber-like resin, and melt kneading the mixture.

Abstract: The amount of impurities contained in a modified polyolefin obtained by means of melt-kneading grafting is reduced by melt-kneading the modified polyolefin in the presence of water. A melt-kneading machine having a vent port is typically used in this process.

Abstract: A thermoplastic resin composition which comprises 100 parts by weight of a copolymer of propylene with at least one particular diene monomer or a mixture of said propylene copolymer with another crystalline propylene polymer, of the content of the diene monomer polymerized of 0.05 to 20 mol %; 90 to 300 parts by weight of an olefin copolymer rubber that can be crosslinked by dynamic heat treatment with a crosslinking agent; 50 to 1900 parts by weight relative to a total of 100 parts by weight of the 1st and 2nd components of a crystalline propylene polymer; and 0 to 100 parts by weight relative to a total of 100 parts by weight of the 1st, 2nd and 3rd components of a filler.

Abstract: A process for producing a polyphenylene ether is disclosed, comprising oxidatively polymerizing a phenol in an organic solvent in the presence of a catalyst for oxidative polymerization, finely dispersing the resulting polyphenylene ether containing the organic solvent in an aqueous dispersion medium containing an acid compound, and heating the aqueous dispersion to remove the solvent from the polyphenylene ether. The resulting polyphenylene ether has excellent powder properties and contains a reduced amount of a catalyst residue.

Abstract: A process for producing a plyphenylene oxide is disclosed, comprising oxidative polymerization of a nucleus-substituted phenol with an oxygen-containing gas in an organic solvent in the presence of a catalyst system comprising a manganese compound containing at least one divalent manganese salt, at least one basic compound selected from hydroxides, alkoxides or phenoxides of the group IA metals of the Periodic Table and hydroxides or oxides of the group IIA metals of the Periodic Table, an alkanolamine represented by formula (I)R.sup.1 --NH--R.sup.2 --OH (I)wherein R.sup.1 represents a hydrogen atom, an alkyl group having from 1 to 12 carbon atoms, or a hydroxyl-substituted alkyl group having from 1 to 12 carbon atoms; and R.sup.2 represents an alkylene group having from 2 to 12 carbon atoms, and an amine represented by formula (II)R.sup.3 R.sup.4 NH (II)wherein R.sup.3 and R.sup.

Abstract: Polyphenylene ether compositions comprising a polyphenylene ether, an alkenylaromatic polymer, a rubber substance, a polyethylene or ethylenic copolymer, and a mineral oil. These polyphenylene compositions are excellent in the balance among fluidity, impact resistance and gloss.

Abstract: Polyphenylene ethers are produced by oxidative polymerization of phenols in the presence of a catalyst comprising the combination of divalent manganese salts, an oxine or derivatives thereof, an alkanolamine, and an alkaline compound. This catalyst has an increased polymerization activity and achieves a higher productivity. In addition, the catalyst enables the polymerization to conduct at relatively high temperatures.