Poly(methyl methacrylate) composition

Details Poly(methyl methacrylate) composition Poly(methyl methacrylate) composition

1975-09-10

1978-08-22

Lieberman, Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260876R, 260881, 260885, 260886, C08L 6300, C08L 5100

Patent

active

041089235

ABSTRACT:
An impact resistant poly(methyl methacrylate) composition which comprises a solid external phase and a discrete microdispersed solid internal phase with refractive indices in the range of about 1.45 to about 1.55. Said composition is prepared by polymerizing methyl methacrylate monomer, co-monomer mixture or sirup thereof in the presence of a microdispersion therein of a cross-linked graft polymer prepared by copolymerizing a mixture of acrylic or methacrylic ester, selected vinyl substituted monomer and a selected polyfunctional monomer. The composition of this invention can be particularly suitable for use where clear sheet glass is used and where a clear plastic material is desired having good impact strength and optical properties.

REFERENCES:
patent: 2539376 (1951-01-01), Staudinger et al.
patent: 3475516 (1969-10-01), Bauer et al.
patent: 3637559 (1972-01-01), Pinkney
patent: 3812205 (1974-05-01), Dunkelberger
patent: 3833682 (1974-09-01), Dickie et al.
patent: 3914338 (1975-10-01), Krieg et al.
patent: 3943190 (1976-03-01), Abe et al.
patent: 3988392 (1976-10-01), Kameda
patent: 3992486 (1976-11-01), Lang

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