发明名称 |
Composition for photo imaging |
摘要 |
An improved photoimagable cationically polymerizable epoxy based coating material is provided. The material includes an epoxy resin system consisting essentially of between about 10% and about 80% by weight of a polyol resin which is a condensation product of epichlorohydrin and bisphenol A having a molecular weight of between about 40,000 and 130,000; between about 20% and about 90% by weight of an epoxidized octafunctional bisphenol A formaldehyde novolak resin having a molecular weight of 4,000 to 10,000; and if flame retardancy is required between about 35% and 50% by weight of an epoxidized glycidyl ether of tetrabromo bisphenol A having a softening point of between about 60 degrees C. and about 110 degrees C. and a molecular weight of between about 600 and 2,500. To this resin system is added about 0.1 to about 15 parts by weight per 100 parts of resin of a cationic photoinitiator capable of initiating polymerization of said epoxidized resin system upon exposure to actinic radiation; the system being further characterized by having an absorbance of light in the 330 to 700 nm region of less than 0.1 for a 2.0 mil thick film. Optionally a photosensitizer such as perylene and its derivatives or anthracene and its derivatives may be added.
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申请公布号 |
US5278010(A) |
申请公布日期 |
1994.01.11 |
申请号 |
US19920956831 |
申请日期 |
1992.10.05 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
DAY, RICHARD A.;GELORME, JEFFREY D.;RUSSELL, DAVID J.;JO, STEVEN |
分类号 |
G03C3/00;(IPC1-7):G03C3/00 |
主分类号 |
G03C3/00 |
代理机构 |
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地址 |
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