Polyurea/urethane optical material and method for making it

Details Polyurea/urethane optical material and method for making it Polyurea/urethane optical material and method for making it

2005-09-06

2005-09-06

Gorr, Rachel (Department: 1711)

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...

C528S058000, C528S064000

Reexamination Certificate

active

06939939

ABSTRACT:
A polyurea/urethane material and method for making it provides for improved optical parts. The material allows for ease of manufacture of parts having good optical properties, high hardness, low density, and good impact resistance. The method provides for related manufacturing advantages.

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