Abstract:
POLYMERISATION OF COPOLYMERISATION OF CYCLOPENTENE WITH A CATALYST OF (A) TUNGSTEN HEXACHLORIDE (B) AN ALKYL OR ARYL TIN HYDRIDE (C) A COCATALYST.
Abstract:
A process for the production of high-impact moulding compositions by the bulk polymerization, bulk-suspension polymerization or suspension polymerization of olefinically unsaturated monomers in the presence of a rubber component and a catalyst, wherein the rubber component comprises A a block copolymer of A. 99 TO 1 PERCENT BY WEIGHT OF BLOCKS OF ETHYLENE-PROPYLENE COPOLYMER OR ETHYLENE-PROPYLENE TERPOLYMER RUBBER, AND B. 1 TO 99 PERCENT BY WEIGHT OF BLOCKS OF A DIENE RUBBER OR POLYPENTENAMER RUBBER, AND THE OLEFINICALLY UNSATURATED MONOMERS COMPRISE B. a mixture of A. 90 TO 50 PERCENT BY WEIGHT OF STYRENE, AN Alpha -ALKYL STYRENE, A NUCLEAR-ALKYLATED STYRENE, METHYL METHACRYLATE OR A MIXTURE THEREOF, AND B. 10 TO 50 PERCENT BY WEIGHT OF ACRYLONITRILE, METHACRYLONITRILE, METHYL METHACRYLATE OR A MIXTURE THEREOF, SAID RUBBER COMPONENT COMPRISING FROM 1 TO 20 PERCENT BY WEIGHT OF SAID MOULDING COMPOSITION AND SAID OLEFINICALLY UNSATURATED MONOMERS COMPRISING FROM 99 TO 80 PERCENT BY WEIGHT THEREOF.
Abstract:
This invention relates to the stabilization of monomeric 2,3dichloro-1,3-butadiene, wherein a piperazine derivative corresponding to the formula:
IN WHICH R represents hydrogen, a linear of branched alkyl radical with one to five carbon atoms or a linear or branched hydroxyalkyl radical with two to five carbon atoms, is added to the monomer.
Abstract:
Thermoplastic moulding compositions which comprise: 5 to 50 parts by weight, of an elastomeric copolymer of 94 to 99.5 parts by weight of an acrylic acid alkyl ester having 4 to 10 carbon atoms in the alkyl group and 0.5 to 6 parts by weight of an acrylamide- or methacrylamide-N-alkylol compound of the general formula (I) in which R1 represents H or CH3; R2 represents H or an alkyl group having 1 to 8 carbon atoms; R3 represents H or an alkyl group or a carboxyalkyl group having 1 to 10 carbon atoms; and R4 represents H or CH3, and 95 TO 50 PARTS BY WEIGHT, OF A POLYMERISED MIXTURE OF I. STYRENE, NUCLEAR OR SIDE CHAIN ALKYL STYRENE, METHACRYLIC ACID ALKYL (C1 - C4) ester or mixtures thereof II. ACRYLONITRILE, METHACRYLONITRILE, AN ALKYL (C1 - C4) ester of methacrylic or fumaric acid, or mixtures thereof, IN A WEIGHT RATIO OF (I) : (II) = 100 : 0 TO 60 : 40 AT LEAST 20% OF THE TOTAL POLYMERISED MIXTURE BEING GRAFT-POLYMERISED ONTO THE ELASTOMER IN AQUEOUS DISPERSION.