Methacrylic resin shaped article, process for producing the same

Details Methacrylic resin shaped article, process for producing the same Methacrylic resin shaped article, process for producing the same

1983-06-02

1985-06-25

Lieberman, Allan M.

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

Synthetic resins

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

525228, C08L 3312

Patent

active

045255377

ABSTRACT:
A novel methacrylic resin shaped article is made of novel compositions comprising (A) 80 to 99.9% by weight of methyl methacrylate polymer or copolymer, which forms continuous phase, and (B) 0.1 to 20% by weight of a polymer obtained from at least one unsaturated monomer of the general formula ##STR1## wherein R.sub.1 is H or methyl group and R.sub.2 is a hydrocarbon radical of at least two carbon atoms, a derivative or monomer mixture thereof, the respective refractive indexes (n.sub.A) and (n.sub.B) of said (A) and (B) polymers satisfying the relation of 0.998.ltoreq.n.sub.B
.sub.A .ltoreq.1.002. The above shaped article has a latent mat surface, which therefore may be converted to a mat surface merely by means of stretching at a temperature above heat distortion temperature.

REFERENCES:
patent: 2941977 (1960-06-01), Roche et al.
patent: 3415796 (1968-10-01), Souder et al.
patent: 3992486 (1976-11-01), Lang
patent: 4108923 (1978-08-01), Mast et al.
patent: 4159288 (1979-06-01), Carson et al.

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