STABLE,HOMOGENEOUS SOLUTIONS OF POLYALKYL GLUTAMATES CONTAINING DISSOLVED ELASTOMERS

1339139 Poly(γ-alkylglutamate-N-carboxy anhydride) compositions AJINOMOTO CO Inc 29 Dec 1970 [30 Dec 1969] 61511/70 Headings C3P and C3R [Also in Divisions B2 and B5] An optically-active γ-alkyl glutamate-N- carboxy anhydride (A) is polymerized in a solution of an elastic high-molecular compound (E) to yield a clear homogeneous blended solution. In (A), the alkyl group may be a C 1-4 alkyl; mixtures of different anhydrides (A) may be used. (E) may have glass transition or softening point < 15‹ C and elongation > 200%. (E) may be polyurethane, natural rubber, synthetic rubber, e.g. polychloroprene, isoprene/isobutylene copolymer, acrylonitrile/ butadiene copolymer, butyl rubber, polybutene, chlorosulphonated polyethylene, butadiene / styrene copolymer, polybutadiene, polyisoprene, chlorinated polyethylene, ethylene/propylene copolymer, polyalkyl acrylate, intramolecularly plasticized polyester, organopolysiloxanes, polyethers, or polyamides. (A)/(E) weight ratio may be from 1 to 9. The solvent may be a chlorinated aliphatic hydrocarbon, an aromatic hydrocarbon, an ester, a ketone, dimethyl formamide, N-methylpyrrolidone, and/or dimethyl sulphoxide. Also present may be a non-solvent for (A), e.g. dimethyl ether, acetonitrile, tetrahydrofuran, chlorinated aliphatic hydrocarbons, or ligroin. As polymerization initiator may be used an amine, or NaOH or KOH. The polymerization temperature may be -20‹ to + 30‹ C. Also present may be cross-linking agents or accelerators for (E); further solvent; fillers, e.g. CaCO 3 , TiO 2 , and C black; plasticizers, e.g. dioctyl phthalate, tricresyl phosphate, or chlorinated diphenyl, triphenyl, naphthalene, or paraffin; surfactants; colourants, dyes; blowing agents; non-elastic polymers, e.g. polymers or copolymers of vinyl chloride, styrene, methacrylate, polycarbonate. Use.-Films; fibres; in artificial leather; coating glass, fabrics, woven, knitted or unwoven textiles, paper, wood, natural or artificial leather, book-cloth, release paper; or metal plates; as fibre-treating agents or paints.