发明名称 |
Method of preparing photochromic articles |
摘要 |
A method of preparing photochromic materials useful for optical applications, and photochromic materials prepared by such method, are described. Such method comprises polymerizing a blend of a polyol[(meth)acryloyl terminated carbonate] monomer and a photochromic amount of an organic photochromic substance, thereby forming a photochromic material. A preferred polyol[(meth)acryloyl terminated carbonate] monomer is diethylene glycol bis[(methacryloyloxy)ethylene carbonate]. Polymerization may be performed by free radical initiation using thermal initiators, photoinitiators or a combination of such initiators. Photochromic materials prepared by such method may be used in optical applications, e.g., photochromic lenses.
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申请公布号 |
US5981634(A) |
申请公布日期 |
1999.11.09 |
申请号 |
US19980120654 |
申请日期 |
1998.07.22 |
申请人 |
PPG INDUSTRIES OHIO, INC. |
发明人 |
SMITH, ROBERT A.;SELVIG, CHRISTOPHER D. |
分类号 |
G02B1/04;G02B5/23;(IPC1-7):C08K5/45;C08K5/15;G02C7/10 |
主分类号 |
G02B1/04 |
代理机构 |
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