发明名称 |
TOPCOATS FOR BUFFER-COATED OPTICAL FIBER |
摘要 |
Radiation-curable coating compositions adapted for application to buffer-coated optical fibers are disclosed. These are intended to apply an adherent topcoat having greater toughness and greater hardness than the buffer coating. The new compositions comprise: (1) from 25% to 70% of diethylenic-terminated polyurethane, which may include urea linkages, the polyurethane being based on a diisocyanate having an average molecular weight of from 400 to 5000; (2) from 5% to 40% of a diethylenically unsaturated ester of a diglycidyl ether of a bisphenol, said ether having a molecular weight up to about 1000; and (3) from 5% to 30% of liquid radiation-curable monoethylenically unsaturated monomer having a Tg above about 55 DEG C., especially N-vinyl pyrrolidone. Ultraviolet cures using acrylates as the ethylenic group are preferred. |
申请公布号 |
DE3371985(D1) |
申请公布日期 |
1987.07.16 |
申请号 |
DE19833371985 |
申请日期 |
1983.12.03 |
申请人 |
DESOTO, INC. |
发明人 |
BISHOP, TIMOTHY E.;PASTERNACK, GEORGE;CUTLER, ORVID R., JR. |
分类号 |
C08F2/48;C08F299/02;C08F299/06;C09D4/06;(IPC1-7):C08F299/06;G02B1/10;B29D11/00 |
主分类号 |
C08F2/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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