Low-hygroscopic copolymer

Details Low-hygroscopic copolymer Low-hygroscopic copolymer

1989-12-01

1991-06-25

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526308, 52631844, 526937, 528501, C08F22006, C08F 848

Patent

active

050268058

ABSTRACT:
Optical materials having well balanced properties such as high heat resistance, low hygroscopicity and low double refractivity. The optical materials are derived from a low hygroscopic, random copolymer comprising units of methacrylic acid and ester derivatives, and units of a six-membered ring acid anhydride.

REFERENCES:
patent: 4742123 (1988-05-01), Kopchik
patent: 4789709 (1988-12-01), Kato et al.
37-Plastic Manuf., vol. 100, 1984, p. 157567w (JP-217501).

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