Plastic lens

Details Plastic lens Plastic lens

1982-07-22

1985-07-09

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

20415922, 20415923, 351168, 528503, C08F22020, G03B 100

Patent

active

045283516

ABSTRACT:
A plastic lens of a stepped segment having an excellent surface hardness can be obtained at high molding efficiency from cast polymerization of a diethylene glycol bisallyl carbonate and specified acrylate(s) system further added with a specified diacrylate(s) and/or dimethacrylate(s).

REFERENCES:
patent: 2403113 (1946-07-01), Muskat et al.
patent: 2445535 (1948-07-01), Parsons et al.
patent: 3013305 (1961-12-01), de Gooreynd
patent: 4360653 (1982-11-01), Stevens et al.

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