Polymers of high refractive index and high heat distortion tempe

Details Polymers of high refractive index and high heat distortion tempe Polymers of high refractive index and high heat distortion tempe

1992-06-17

1994-11-29

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

528109, 528361, 528364, G02B 100, B29B 1100

Patent

active

053691415

ABSTRACT:
Ophthalmic lenses and lens blanks having high refractive index and high heat distortion temperature are produced by polymerizing a polymerizable, homogeneous composition comprising epichalcogen resin, aliphatic polythiol, and cyclic anhydride.

REFERENCES:
patent: 2933473 (1960-04-01), Schmitz
patent: 3090793 (1963-05-01), Casement
patent: 4136086 (1979-01-01), Baumann et al.
patent: 4342863 (1982-08-01), Hohokabe et al.
patent: 4546155 (1985-10-01), Hirose et al.
Abstract of JP01[1989]-98615.
Abstract of JP01[1989]-215816.

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