Title:
COLORED PLASTIC LENS
Document Type and Number:
Japanese Patent JPH1184101
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To obtain both of durability and fashionable appearance by forming a coating film essentially comprising a pigment, inorg. oxide fine particles and polyvinylacetal on a plastic lens base body. SOLUTION: A coating film essentially comprising a pigment, inorg. oxide fine particles and polyvinylacetal is formed on a plastic lens base body. The lens base body consists of, for example, polymethylmethacrylate and its copolymer, polycarbonate, or compds. obtd. by polymn. of a monomer mixture containing one or more kinds of polyisocyanates and one or more kinds of polyols and/or one or more kinds of polythiols. As the pigment dispersed in the primer layer, org. pigments such as phthalocyanines and inorg. pigments such as carbon black can be used. The particle size of the pigment is <=0.3 μm, especially preferably <=0.1 μm. The compounding amt. of the pigment in the primer layer is controlled to about 0.1 to 10 g for 40 g of the resin.
Inventors:
SEKI MICHIKO
KAWAMURA HIROKO
TANAKA TOSHIYA
KAWAMURA HIROKO
TANAKA TOSHIYA
Application Number:
JP24417997A
Publication Date:
March 26, 1999
Filing Date:
September 09, 1997
Export Citation:
Assignee:
NIKON CORP
International Classes:
G02C7/02; C08K3/20; C08K5/057; C08L29/14; C09D129/14; D06P3/00; D06P5/00; G02B1/04; G02B1/10; G02B1/115; G02B1/14; G02C7/10; (IPC1-7): G02B1/10; C08K3/20; C08K5/057; C08L29/14; C09D129/14; D06P3/00; D06P5/00; G02B1/04; G02C7/02; G02C7/10
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