Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-08-25
1976-11-30
Seccuro, Carman J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
20415914, 2041592, 260885, C08L 5104
Patent
active
039949915
ABSTRACT:
A thermoplastic resin composition of vinyl chloride polymer improved in impact strength and weather resistance, which comprises (1) 30 to 97 parts by weight of at least one of vinyl chloride polymers having not less than 70% by weight of vinyl chloride units and (2) 70 to 3 parts by weight of at least one of graft copolymers comprising (2-1) a backbone polymer and (2-2) monomers grafted in two stages thereon in a proportion of 20 : 80 to 80 : 20 by weight, the backbone polymer comprising (2-1-1) units of at least one of alkyl acrylates, of which not more than 20% by weight may be substituted with units of at least one of monovinylic monomers copolymerizable therewith, and (2-1-2) units of at least one of cross-linkable monomers in an amount of 0.01 to 10% by weight of the alkyl acrylates and, when used, the monovinylic monomers and the graft monomers comprising (2-2-1) 30 to 100% by weight of at least one of alkyl methacrylates, 0 to 70% by weight of at least one of aromatic vinyl compounds, 0 to 50% by weight of at least one of vinylic cyanides and 0 to 30% by weight of at least one of other monomers copolymerizable therewith based on the total weight of these monomers as those grafted at the first stage and (2-2-2) 85 to 100% by weight of at least one of aromatic vinyl compounds, alkyl acrylates and vinyl esters and 0 to 15% by weight of at least one of other monomers copolymerizable therewith based on the total weight of these monomers as those grafted at the second stage in a proportion of 95 : 5 to 50 : 50 by weight.
REFERENCES:
patent: 3448173 (1969-06-01), Ryan et al.
patent: 3793406 (1974-02-01), Bortnick et al.
patent: 3804925 (1974-04-01), Kato et al.
patent: 3886235 (1975-05-01), Kagakykabushiki
Hashimoto Yoshihiko
Okami Shoji
Saito Teizo
Yasunaga Shigeki
Kanegafuchi Chemical Industries Co., Ltd.
Seccuro Carman J.
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