Highly weather-resistant, thermoformable sheeting

Details Highly weather-resistant, thermoformable sheeting Highly weather-resistant, thermoformable sheeting

1975-10-15

1977-08-16

Levin, Stanford M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 237H, 260 318M, 260876R, C08K 512, C08K 515

Patent

active

040425487

ABSTRACT:
A highly weather-resistant, thermoformable sheeting prepared by mixing from 45 to 70 parts by weight of a rigid thermoplastic resin selected from the group consisting of polyvinyl chlorides and copolymers each of which is composed mostly of a vinyl chloride and a small amount of a monoolefinic monomer copolymerizable with the vinyl chloride, from 20 to 50 parts by weight of a thermoplastic resin obtained by a graft polymerization of from 20 to 40 parts by weight of an ethylene-propylene copolymer rubber or ethylene-propylene-diene terpolymer with from 60 to 80 parts by weight of a vinyl monomer mixture consisting of from 40 to 90 percent by weight of an alkenyl aromatic compound and from 10 to 60 percent by weight of at least one monomer copolymerizable with the alkenyl aromatic compound, and from 5 to 35 parts by weight of an acrylonitrile-butadiene rubber, with from 5 to 50 parts by weight of a plasticizer or plasticizers added to the 100 parts by weight of the resinous mixture.

REFERENCES:
patent: 3808293 (1974-04-01), Garrison

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