摘要:
A process for producing polyphenylene oxide which comprises contacting a phenolic monomer with oxygen in the presence of a catalyst composed of a manganese (II) salt and an ortho-hydroxyazo compound represented by the following formula: ##STR1## wherein A and B represent identical or different arylene ring having a valency of at least 2 and having an oxy group and an azo group directly linked to the ortho carbon atoms of the arylene ring and R represents hydrogen or lower alkyl group, or in the presence of said catalyst and an amine, in a polymerization solvent containing a base and thereby subjecting said phenolic monomer to an oxidative polymerization.
摘要:
A resin composition based on a polyphenylene ether comprising 99 to 1 part by weight of a polyphenylene ether copolymer derived from 99.5 to 85 mole-% of 2,6-dimethylphenol and 0.5 to 15 mole-% of 3-methyl-6-tert-butylphenol and 1 to 99 parts by weight of a styrene polymer (making up 100 parts by weight in total); and said resin composition further containing 0.1 to 100 parts by weight of a rubber-like polymer for 100 parts by weight of the said resin composition. These resin compositions have excellent mechanical strength, heat resistance, and moldability and are suitable as molding resin materials in practical use fields.
摘要:
A process for producing a resin composition which comprises melt-blending 30 to 95% by weight of a polyamide with 70 to 5% by weight of a polyphenylene oxide.
摘要:
A resin composition comprising a resin composition comprising 5 to 95% by weight of a polyphenylene oxide and 95 to 5% by weight of a polyamide and 0.01 to 30 parts by weight of a member selected from the group consisting of (A) liquid diene polymers, (B) epoxy compounds and (C) compounds having in the molecule both of (a) an ethylenic carbon-carbon double bond or a carbon-carbon triple bond and (b) a carboxylic acid, acid anhydride, acid amide, imido, carboxylic acid ester, amino or hydroxyl group per 100 parts by weight of the total of the polyphenylene oxide and polyamide.
摘要:
A process for producing a graft copolymer characterized by melt-blending 100 parts by weight of a resin mixture comprising 90 to 10% by weight of a polyphenylene oxide having a structural unit of ##STR1## (wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents hydrogen, a halogen atom, a hydrocarbon or substituted hydrocarbon radical) and 10 to 90% by weight of a styrene polymer in the presence of 0.01 to 5 parts by weight of a compound containing nitrogen and oxygen selected from oxime compounds and nitroso compounds.
摘要:
A method for producing a modified polyphenylene oxide which comprises polymerizing 69 to 25 parts by weight of a mixture of 97 to 45% by weight of a styrene monomer and 3 to 55% by weight of a polar vinyl mononer at 90.degree. to 190.degree. C. using 0.3 to 10 parts by weight of a radical initiator in an aqueous dispersion containing a dispersion stabilizer alone or in combination with at least one of a surfactant and an adhesion-preventing agent in the presence of 31 to 75 parts by weight of a polyphenylene oxide having a unit structure of the formula, ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a hydrogen or halogen atom, or a hydrocarbon, substituted hydrocarbon, cyano, hydrocarbonoxy, substituted hydrocarbonoxy, nitro or amino group.
摘要:
A resin composition comprising:(A) a polyphenylene oxide resin or a resin composition containing polyphenylene oxide, and(B) a copolymer of an olefin and glycidyl methacrylate and/or glycidyl acrylate.The aforesaid resin composition is excellent in processability, impact resistance and oil resistance as well as adhesiveness with inorganic fillers such as glass fiber, calcium carbonate, silica, titanium oxide, etc.
摘要:
A plastic container having improved properties as a barrier against gases and water vapor made from a thermoplastic resin composition comprising (A) an aromatic polyester carbonate composed of an aromatic dicarboxylic acid moiety, an aromatic dihydroxy compound moiety and a carbonate moiety and (B) a polyalkylene terephthalate and/or a polyalkylene oxybenzoate in a ratio of 100 parts by weight of said aromatic polyester carbonate to 100 parts by weight or less of said polyalkylene terephthalate and/or polyalkylene oxybenzoate.
摘要:
A method for the isolation of aromatic polyesters of a uniform and fine powder which comprises mixing a 1,2-dichloroethane solution containing 8 to 50% by weight of an aromatic polyester copolymer with 0.01 to 1.0 time by volume (based on said solution) of methanol, and isolating the resulting precipitates, said 1,2-dichloroethane solution containing an aromatic polyester copolymer being produced by contacting an aqueous alkaline solution of 2,2-bis(4'-hydroxyphenyl)propane with a 1,2-dichloroethane solution of a mixture of terephthaloyl chloride and isophthaloyl chloride.
摘要:
A process for the production of aromatic polyesters which comprises preparing a prepolymer by subjecting the compounds of the formulae: ##STR1## to heat-polycondensation in the molar ratios of (I) : (II) = 1 : 100 to 100 : 1 and (II) : (III) = 1 : 10 to 10 : 1, pulverizing the prepolymer thus prepared and then heating the resultant in an inert gas or under reduced pressure.