Cast molding material for plastic lens and process for the produ

Details Cast molding material for plastic lens and process for the produ Cast molding material for plastic lens and process for the produ

1997-10-16

2000-05-02

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Nonmechanical aftertreatment

264 11, B29D 1100

Patent

active

06056900&

ABSTRACT:
A cast-molding material for a plastic lens which is almost free from causing defective dyeing when dyed, and a process for producing plastic lenses almost free from causing defective dyeing, the cast-molding material containing, as essential components, a combination of (A) diethylene glycol bisallylcarbonate or a mixture of diethylene glycol bisallylcarbonate and a monomer copolymerizable therewith, with (B) a polyether-modified silicone compound, and the process including cast-molding the above cast-molding material in a mold.

REFERENCES:
patent: 3872042 (1975-03-01), Bond
patent: 3944637 (1976-03-01), Bond et al.
patent: 4146696 (1979-03-01), Bond et al.
patent: 4547397 (1985-10-01), Burzynski et al.
patent: 5712229 (1998-01-01), Hopkins et al.
patent: 5725960 (1998-03-01), Konishi et al.

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