Method and device for producing a graded index polymer

Details Method and device for producing a graded index polymer Method and device for producing a graded index polymer

1990-06-26

1992-03-10

Schofer, Joseph L.

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

Synthetic resins

Effecting a change in a polymerization process in response...

526 68, 526 87, 526242, 526314, 526227, 525263, 525276, 525277, C08F 202

Patent

active

050950797

ABSTRACT:
To produce a graded index polymer there is diffused into a base material formed of at least one partly polymerized monomer adapted to yield a homopolymer with refractive index N1 in the gel state an additive material formed of at least one monomer adapted to yield a homopolymer with refractive index N2 different from N1. The polymerization of the base material treated in this way is then completed. The additive material comprises a mixture of at least two monomers and the composition of this mixture is varied with time.

REFERENCES:
patent: 3816160 (1974-06-01), Moore
patent: 3955015 (1976-05-01), Ohtsuka et al.
patent: 4022855 (1977-05-01), Hamblen
patent: 4686266 (1987-08-01), Tang
patent: 4758071 (1988-07-01), McLaughlin
patent: 4784478 (1988-11-01), Takada
patent: 4944584 (1990-07-01), Maeda

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