Methacrylic resin cast plate having transparency and impact resi

Details Methacrylic resin cast plate having transparency and impact resi Methacrylic resin cast plate having transparency and impact resi

1992-07-17

1994-08-16

Jagannathan, Vasu S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 84, 525 85, 525305, 525309, 524718, 524720, C08F26506, C08F27902, C08F28500, C08L 5104

Patent

active

053388046

ABSTRACT:
Disclosed is a methacrylic resin cast plate which is comprised of 100 parts by weight of [I] polymethyl methacrylate or a methyl methacrylate copolymer containing at least 90% by weight of methyl methacrylate units and, dispersed therein, a graft copolymer [IV] obtained by graft-polymerizing a hard resin component [III] containing at least 90% by weight of methyl methacrylate units onto a crosslinked rubbery copolymer [II] containing at least 45% by weight of butyl acrylate units and having an average particle diameter of 0.1 to 1 .mu.m, the amount of the graft copolymer [IV] being 2 to 30 parts by weight as the amount of the crosslinked rubbery copolymer.
The methacrylic resin cast plate has a high transparency and impact resistance.

REFERENCES:
patent: 3442851 (1969-05-01), McManimie
patent: 3562235 (1971-02-01), Ryan
patent: 3879495 (1975-04-01), Fujii et al.
patent: 3922321 (1975-11-01), Yusa et al.
patent: 3968305 (1976-07-01), Oshima
patent: 4108923 (1978-08-01), Mast et al.
patent: 4567234 (1986-01-01), Meunier
patent: 4877687 (1989-10-01), Azegami
Translation of Japan 61-53350, Mar. 1986.
Translation of Japan 62-10747, Jan. 1987.

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