Two-pack type urethane molding material for optical lens and polyurethane resin optical lens
AssigneeTalex Co., Ltd.
InventorsHiroo TAMURA, Kenzo WADA
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Abstract
Provided is a two-pack type urethane molding material for optical lenses including a main agent containing an isocyanate-terminated prepolymer which is an intermediate product of a polyurethane production reaction by an alicyclic diisocyanate and a polyhydroxy compound; and a curing agent containing an aromatic diamine of dimethylthiotoluenediamine (DMTDA), diethyltoluenediamine (DETDA) or a mixture of these. Also, a polyurethane resin optical lens is provided which is constituted by a cast molded body using the two-pack type urethane molding material.
Claims18
A two-pack type urethane molding material for an optical lens, the two-pack type urethane molding material comprising:
- a liquid main agent containing an isocyanate-terminated prepolymer which is an intermediate product of a polyurethane production reaction by an alicyclic diisocyanate and a polyhydroxy compound;
- and
- a curing agent containing an aromatic diamine which is a liquid at normal temperature,
- wherein the aromatic diamine is dimethylthiotoluenediamine, diethyltoluenediamine or a mixture of these.
Dependencies are inferred from the claim text.