Polyurethane resin composition for optical lenses and impact...

Details Polyurethane resin composition for optical lenses and impact... Polyurethane resin composition for optical lenses and impact...

2007-05-15

2007-05-15

Niland, Patrick D. (Department: 1714)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C264S001100, C264S001310, C264S001320, C264S331190, C351S041000, C351S045000, C351S049000, C351S159000, C351S177000

Reexamination Certificate

active

10409852

ABSTRACT:
An impact strength synthetic resin lens is provided in which transparency of a synthetic resin lens material of a polyurethane and releasability are improved to improve productivity and no stria are produced. The impact strength synthetic resin lens is manufactured by casting and curing a polyurethane resin composition which a polyurethane resin composition for molding optical lenses, comprising, as essential components, a prepolymer obtained by reacting an alicyclic polyisocyanate having two or more isocyanate groups with a polyol having two or more hydroxy groups, an internal mold lubricant and a decolored aromatic diamine.

REFERENCES:
patent: 3418275 (1968-12-01), Wayne
patent: 4927901 (1990-05-01), Miyazaki
patent: 5021503 (1991-06-01), Nagata et al.
patent: 5679759 (1997-10-01), Zhu et al.
patent: 5962561 (1999-10-01), Turshani et al.
patent: 6127505 (2000-10-01), Slagel
patent: 6650473 (2003-11-01), Nakagoshi
patent: 6734272 (2004-05-01), Tamura et al.
patent: 1047093 (1990-11-01), None
patent: 1036204 (1997-10-01), None
patent: 1 197 505 (2002-04-01), None

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