Abstract: Disclosed is a resin composition which comprises (a) 5 to 95% by weight of a styrene-based polymer having a syndiotactic configuration, (b) 95 to 9% by weight of a thermoplastic resin having at least one polar group selected from a carboxyl group, a hydroxyl group and an amino group at the terminal; and (c) 0.01 to 15 parts by weight of a styrene-based copolymer obtained by copolymerizing a styrene compound with a vinyl compound having an epoxy group or a styrene-based copolymer obtained by copolymerizing a styrene compound with an .alpha.,.beta.-unsaturated carboxylic acid anhydride based on 100 parts by weight of the aobve components (a) and (b). The composition exhibits no laminar peeling and has an excellent appearance because affinity and dispersibility of the styrene-based polymer and the thermoplastic resin are improved, and a polystyrene-based resin composition improved in mechanical strength can also be obtained without using a complicated process.

Abstract: The present invention is directed to poly-.alpha.-olefin/polyurethane block copolymers which are prepared by reactingA) isocyanate-reactive functionalized poly-(C.sub.2 -C.sub.10 -.alpha.-olefins) having a number average molecular weight M.sub.w of about 1000 to 350,000,B) polyisocyanates, isocyanate prepolymers or modified polyisocyanates, and, optionally,C) isocyanate-reactive synthesis units containing Zerewitinoff-active hydrogen atoms and having a molecular weight of 400 to about 5000 and, optionally,D) low molecular weight isocyanate-reactive chain extending agents having a molecular weight of 32 to 399.The present invention is also directed to this process for preparing the poly-.alpha.-olefin/polyurethane block copolymers and to their use as polymer dispersants for the production of polymer blends, as primers or modifiers or for the production of moldings or coatings.

Abstract: A super-tough polymeric composition comprising an engineering thermoplastic and a modified radial polymer. The engineering thermoplastic is selected from the group consisting of polyamides, thermoplastic polyesters, polyphenylene ether resins, polyarylene sulfide resins, polysulfone and the like. The modified radial polymer is modified by grafting a compound containing a carboxylic acid or carboxylic acid derivative group. The modified, radial polymer has from about 3 to about 50 arms, as determined using light scattering techniques and the arms will be olefin polymers. The polymer compositions will yield shaped articles which fail ductilely when tested using ASTM procedure D-256 at room temperature and some at -20.degree. F.

Abstract: Thermoplastic molding composition comprisingA. 5 to 99% by weight (based on A+B) of a polycarbonate based on substituted dihydroxydiphenyl cycloalkanesB. 1 to 95% by weight (based on A+B) of a graft polymer prepared by a special process of5 to 90 parts by weight of a mixture ofB.1.1. 50 to 95 parts by weight styrene, .alpha.-methyl styrene, C.sub.1-4 alkyl- or halogen-nucleus-substituted styrenes, C.sub.1-8 alkyl methacrylates, C.sub.1-8 alkyl acrylates or mixtures thereof andB.1.2. 5 to 50 parts by weight acrylonitrile, methacrylonitrile, C.sub.1-8 alkyl methacrylates, C.sub.1-8 alkyl acrylates, maleic anhydride, C.sub.1-4 alkyl-N-maleic imides, phenyl-N-maleic imides or mixtures thereof onB.2. 10 to 95 parts by weight of a diene rubber having an average particle diameter d50 of from 0.09 to 1 .mu.m and a gel content of more than 50% by weight and optionally at least one other thermoplastic resin which replaces up to 75% by weight of the polycarbonate A.

Abstract: A process for the production of a thermoplastically processible polymer granulate or powder containing from 0.01 to 50%, by weight, of burr-shaped or fibrous, doped polyacetylene, in which a plastics material and the doped polyacetylene particles are mixed in the presence of an inert suspending liquid and said liquid is removed.