Graded-refractive-index optical plastic material and method for

Details Graded-refractive-index optical plastic material and method for Graded-refractive-index optical plastic material and method for

1996-06-06

1999-06-29

Lipman, Bernard

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

Synthetic resins

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

525199, C08G 6548

Patent

active

059169710

ABSTRACT:
A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer (a) which has substantially no C--H bond and at least one material (b) which has substantially no C--H bond and differs from the fluoropolymer (a) in refractive index by at least 0.001, wherein the material (b) is distributed in the fluoropolymer (a) so as to have a concentration gradient in a specific direction, and the optical plastic material has a glass transition temperature which is substantially uniform throughout it.

REFERENCES:
patent: 4252859 (1981-02-01), Concannon et al.
patent: 5041500 (1991-08-01), Ishiwari et al.
patent: 5051479 (1991-09-01), Logothetis et al.
patent: 5179167 (1993-01-01), Ishiwari et al.

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