High-refractivity plastic lens resin formed from a polyisocyanat

Details High-refractivity plastic lens resin formed from a polyisocyanat High-refractivity plastic lens resin formed from a polyisocyanat

1987-11-05

1988-12-13

Anderson, Harold D.

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 77, C08G 1828, C08G 1877, C08G 1832

Patent

active

047911859

ABSTRACT:
Disclosed herein is a colorless transparent plastic lens having high refractivity and low dispersion. The lens is light, has heat resistance sufficient for post processing, and is excellent in grinding machinability and impact resistance. It is made of a sulfur-containing urethane resin, which is a polymer of a specific polythiol and a particular polyisocyanate of at least bifunctionality.

REFERENCES:
patent: 4342863 (1982-08-01), Hohokabe et al.
patent: 4530941 (1985-07-01), Turner et al.
patent: 4587322 (1986-05-01), Rasshofer et al.
patent: 4689387 (1987-08-01), Kajimoto et al.

Affiliated with

Also associated with

Rating

High-refractivity plastic lens resin formed from a polyisocyanat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-refractivity plastic lens resin formed from a polyisocyanat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-refractivity plastic lens resin formed from a polyisocyanat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2196949