Wenderoth, Lind & Ponack, LLP
Polyurethane resin composition for optical lenses and impact strength synthetic resin lenses
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.
Talex Optical Co., Ltd.
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Shoichi Chung-Tang Kanichi
Mitsuuchi Chang Tamura