C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3045, 18/763
C08L 51/04 (2006.01) B29C 47/00 (2006.01) C08L 35/06 (2006.01)
Patent
CA 2005065
08-12 (8825)A ABSTRACT TRANSPARENT POLYBLENDS The invention relates to a polyblend comprising from 20 to 80% of a polymer A and from 80 to 20% of a polymer B, based on the total weight of polymers A and B in the polyblend, and wherein : Polymer A is a copolymer of 35% to 65% of methyl methacrylate and 35 to 65% of styrene grafted on butadiene- styrene rubber, methyl methacrylate being partially replaceable by an acrylic ester, and either methyl methacrylate or grafting styrene being partially replaceable by acrylonitrile; and Polymer B is a copolymer of from 20 to 60% of a vinyl- aromatic hydrocarbon monomer, from 20 to 60% of a C1-C4-alkyl acrylate or a C1-C4-alkyl methacrylate ester, and from 12 to 30% of maleic anhydride or maleimide or a N-substituted maleimide or a mixture of such maleic acid derivatives. The polyblends have heat resistance, transparency and impact strength.
Dufour Daniel L.
Mcfadden Fincham
Monsanto Europe S.a.
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