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Patent Searching and Data


Title:
POST-PROCESSING METHOD OF URETHANE LENS, DYEING METHOD AND DYED LENS
Document Type and Number:
Japanese Patent JP2010262250
Kind Code:
A
Abstract:

To provide a frame-less sunglass lens emphasizing fashionability.

The dyed lens capable of being commercialized is obtained by a method of uniformly dyeing the whole surface or a method of gradation-dyeing using an urethane lens for sunglasses cleaned by a cleaning method of cleaning without damaging the surface of the lens to completely remove the known additives (mainly an internal release agent) such as the internal release agent, a plasticizer, a defoaming agent, a leveling agent, a matting agent, a flame retardant, a thickener, a lubricant, an anti-static agent, a surfactant, a reaction retardant, a dehydrating agent, an antioxidant, an ultraviolet absorber, a hydrolysis inhibitor, and a weathering stabilizer, all being present in the urethan itself and on the surface after demolded.

COPYRIGHT: (C)2011,JPO&INPIT


Inventors:
KOSHIDA HITOSHI
TORASAWA KENJI
TAKEHARA HISAYASU
Application Number:
JP2009131396A
Publication Date:
November 18, 2010
Filing Date:
May 11, 2009
Export Citation:
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Assignee:
KASEIHIN SHOJI KK
International Classes:
G02C7/10; G02B5/22; G02C7/00