Composition for urethane-base plastic lens, urethane-base plasti

Details Composition for urethane-base plastic lens, urethane-base plasti Composition for urethane-base plastic lens, urethane-base plasti

1995-03-29

1997-12-02

Gorr, Rachel

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 53, 528 54, 528 58, 524709, 524710, 523106, 264 11, C08G 1818

Patent

active

056937385

ABSTRACT:
A composition for a urethane-base plastic lens, comprising:

REFERENCES:
patent: 3661885 (1972-05-01), Haddick et al.
patent: 4327204 (1982-04-01), Oyaizu et al.
patent: 4975328 (1990-12-01), Hirose et al.
patent: 5075405 (1991-12-01), Atchekzai et al.
Database WPI, Week 9120, Derwent Publications Ltd., London, GB; AN 146193, XP002000869, "Thiocarbamic Acid Alkyl Ester Based Lens Preparation Cast" & JP-A-03084021 (Mitsui Toatsu) Sep. 4, 1991 *Abstract*.

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