Abstract: A polyphenylene sulfide/polyphenylene ether composition is provided, which has excellent dimensional stability and impact resistance, as well as good heat resistance, rigidity and surface appearance. The composition also includes certain polyamide resins, hydrogenated conjugated diene/aromatic monovinyl block copolymers, modified polyolefins, compatibilizer agents, and inorganic fillers.

Abstract: A copolymeric polycarbonate containing repeating constituent units having formula [I] below and repeating constituent units having formula [II] below in a molar ratio of from 98:2 to 40:60. ##STR1## The above-described copolymeric polycarbonates have excellent resistance to chemicals, heat resistance and flame retardancy without compromising the impact resistance and good hues intrinsic to polycarbonates.

Abstract: The present invention discloses a polycarbonate modification method wherein a polycarbonate resin having (a) a carbon-carbon double bond, and (b) at least one group selected from the group consisting of --C(.dbd.O)--Cl, --C(.dbd.O)--Br, --C(.dbd.O)--OH, --OH, --O--C(.dbd.O)--Cl and --O--C(.dbd.O)--Br, is melt-kneaded in the presence of a radical initiator. Polycarbonate resins prepared according to the present method retain the desirable properties associated with polycarbonates while exhibiting decreased surface gloss.

Abstract: Disclosed herein are processes for the production of polycarbonates by melt polycondensation of an aromatic dihydroxy compound and a carbonic acid diester or a diphenyl carbonate compound wherein said polycondensation is carried out in the presence of from 0.05 to 15 mol %, based on 1 mole of the aromatic dihydroxy compound, of a phenol having from 10 to 40 carbon atoms, a carbonic acid diester having from 17 to 50 carbon atoms or a carbonic acid diester having from 13 to 16 carbon atoms, using a catalyst comprising (a) a nitrogen containing basic compound, (b) from 10.sup.-8 to 10.sup.-3 mole, based on 1 mole of the aromatic dihydroxy compound, of an alkali metal or alkaline earth metal compound, and (c) boric acid or boric ester. Also disclosed is a polycarbonate in which from 5 to 30% of its terminal groups are hydroxy groups and it has a sodium content of not more than 1 ppm and a chlorine content of not more than 20 ppm.

Abstract: The invention relates to a resin composition comprising a polyphenylene ether (or blend thereof with a styrene resin), a styrene elastomer, an ethylene-unsaturated carboxylate copolymer modified with an unsaturated dicarboxylic acid or derivative thereof and having a number-average molecular weight above 10,000, and an ethylene-(meth)acrylate copolymer having a number-average molecular weight of 1,500 to 9,000. This composition provides improved processing and moldability, also, molded objects therefrom have improved low temperature impact strength and freedom from delamination.

Abstract: Disclosed herein are processes for the production of polycarbonates by melt polycondensation of an aromatic dihydroxy compound and a carbonic acid diester or a diphenyl carbonate compound wherein said polycondensation is carried out in the presence of from 0.05 to 15 mol %, based on 1 mole of the aromatic dihydroxy compound, of a phenol having from 10 to 40 carbon atoms, a carbonic acid diester having from 17 to 50 carbon atoms, or a carbonic acid diester having from 13 to 16 carbon atoms, using a catalyst comprising (a) a nitrogen containing basic compound, (b) from 10.sup.-8 to 10.sup.-3 mole, based on 1 mole of the aromatic dihydroxy compound, of an alkali metal or alkaline earth metal compound, and (c) boric acid or boric ester. Also disclosed is a polycarbonate in which from 5 to 30% of its terminal groups are hydroxy groups and it has a sodium content of not more than 1 ppm and a chlorine content of not more than 20 ppm.

Abstract: A process for preparing polycarbonates according to the invention by melt polycondensation of aromatic dihydroxy compounds and carbonic acid diesters, is characterized by using an aromatic dihydroxy compound and a carbonic acid diester, wherein the combined content of hydrolyzable chlorine in those monomers falls within the particular range. Another process for preparing polycarbonates according to the invention by melt polycondensation of aromatic dihydroxy compounds and carbonic acid diesters, is characterized by using a catalyst comprising (a) a nitrogen containing basic compound and (b) aromatic dihydroxy compound of an alkali metal or alkaline earth metal compound, or (a) and (b) and (c) boric acid or boric ester.

Abstract: This invention relates to compositions which contain polyphenylene ether resin and polyamide resin, wherein a portion of the polyphenylene ether is modified by terminal oxazolinization.

Abstract: Improved thermoplastic articles are described, which include a substrate molded from a composition of polyphenylene ether resin and polyamide resin, and a coating which is applied directly to the substrate, in the absence of a primer layer. The substrate can be pretreated with an acid processing agent and a surfactant processing agent.

Abstract: An improved thermoplastic composition is described, comprising polyphenylene ether resin, polyamide resin, a saturated aliphatic polycarboxylic acid, and a modified polyolefin such as an ethyleneethyl acrylate-g-maleimide copolymer.

Abstract: Thermoplastic resin compositions which contain specified weight proportions of a polyphenylene ether resin, a polyamide resin and a rubber polymer consisting of a mixture of ABA or ABA' types of block copolymers and an AB block copolymer are improved by the presence of a miscibility enhancer. Representative of the miscibility enhancers are citric acid, malic acid, maleic anhydride, trimellitic chloride anhydride and the like. The compositions of the invention have been found to produce molded articles of improved low-temperature impact properties.

Abstract: A process for preparing polycarbonates according to the invention by melt polycondensation of aromatic dihydroxy compounds and carbonic acid diesters, is characterized by using an aromatic dihydroxy compound and a carbonic acid diester, wherein the combined content of hydrolyzable chlorine in those monomers falls within the particular range. Another process for preparing polycarbonates according to the invention by melt polycondensation of aromatic dihydroxy compounds and carbonic acid diesters, is characterized by using a catalyst comprising (a) a nitrogen containing basic compound and (b) aromatic dihydroxy compound of an alkali metal or alkaline earth metal compound, or (a) and (b) and (c) boric acid or boric ester.

Abstract: The present invention concerns a resin composition that contains a polyphenylene ether, an oxazolinyl group-containing polyphenylene ether, and a polyester.

Abstract: Thermoplastic molding compositions of blends of polyphenylene ethers and polyesters are improved in respect to impact resistance by the addition of an organophosphorus compound of the formula: ##STR1## wherein R.sub.1 when taken independently is selected from divalent hydrocarbon residues containing 2-12 carbon atoms; each of R.sub.2 -R.sub.5 when taken independently are selected from the group consisting of alkyl groups of 2 to 12 carbon atoms, aryl groups containing 6-14 carbon atoms, alkyl-substituted aryl groups, aralkyl groups, halogen-substituted alkyl groups, halogen-substituted aryl groups of 6-14 carbon atoms, halogen-substituted alkyl-substituted aryl groups, and halogen-substituted aralkyl groups; two groups selected from among R.sub.1 -R.sub.5 may be bonded together and form a ring; provided at least one member selected from among R.sub.1 -R.sub.5 has a carbon-carbon unsaturated double bond or triple bond, and at least one member selected from among R.sub.1 -R.sub.

Abstract: Polyphenylene ether-olefin polymer copolymer compositions are prepared by the reaction of an epoxytriazine-capped polyphenylene ether with an olefin polymer containing highly nucleophilic (e.g., carboxylic acid) substituents. The copolymers have excellent properties and find utility as molding compositions and as compatibilizers for blends of similar polymers. Suitable epoxytriazine-capped polyphenylene ethers may be prepared by reaction of a polyphenylene ether with an epoxychlorotriazine such as diglycidyl chlorocyanurate, n-butyl glycidyl chlorocyanurate or mesityl glycidyl chlorocyanurate.

Abstract: A process for preparing polycarbonates according to the invention by melt polycondensation of aromatic dihydroxy compounds and carbonic acid diesters, is characterized by using an aromatic dihydroxy compound and a carbonic acid diester, wherein the combined content of hydrolyzable chlorine in those monomers falls within the particular range. Another process for preparing polycarbonates according to the invention by melt polycondensation of aromatic dihydroxy compounds and carbonic acid diesters, is characterized by using a catalyst comprising (a) a nitrogen containing basic compound and (b) aromatic hihydroxy compound of an alkali metal or alkaline earth metal compound, or (a) and (b) and (c) boric acid or boric ester.