Optical terpolymer of polyisocyanate, polythiol and polyene mono

Details Optical terpolymer of polyisocyanate, polythiol and polyene mono Optical terpolymer of polyisocyanate, polythiol and polyene mono

1995-04-19

1999-12-28

Sergent, Rabon

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

25218217, 25218218, 2521822, 25218223, 25218224, 25218228, 522 62, 522 90, 522 96, 522173, 522175, 525131, 525455, 528 52, 528 53, 528 58, 528 68, 528 75, 528 85, C08F 830, C08L 7504, C08L 8102

Patent

active

060082968

ABSTRACT:
A monomer composition characterized by being curable to form a resin suitable for optical products having a balanced refractive index and Abbe's number range and good tintability comprising a polyene monomer; a polyisocyanate, polyisothiocyanate, or an isocyanate monomer containing at least one isothiocyanate group; and a monomer having two or more active hydrogen groups such as polythiols, polyamines, and polyols. The invention also provides a special process for making the composition and for curing the composition to form a resin product.

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