Polymerizable compositions and high refractive plastic lens obta

Details Polymerizable compositions and high refractive plastic lens obta Polymerizable compositions and high refractive plastic lens obta

1994-01-13

1995-01-24

Welsh, Maurice J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526313, 528 69, 528 75, 523106, 351160R, 359642, C08G 1804

Patent

active

053843800

ABSTRACT:
A polymerizable composition is provided which is constituted by adding isocyanate by 0.1 to 2 equivalent to the alcoholic hydroxyl group in a mixture dissolving component A prescribed below by 20 to 60 parts by weight to a total of 80 to 40 parts by weight of component B and component C in the ratio specified below:

REFERENCES:
patent: 4369298 (1983-01-01), Kida et al.
patent: 4985472 (1991-01-01), Aosai et al.
patent: 5147959 (1992-09-01), Nishimoto et al.

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