发明名称 |
Method of producing high molecular weight organopolysiloxane, compositon comprising the high molecular weight organopolysiloxane, and optical semiconductor device sealed with cured product thereof |
摘要 |
<p>Provided is a method of producing a high molecular weight organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 5 × 10 4 , comprising the steps of producing an organopolysiloxane by subjecting a silane compound having a hydrolyzable group to a first hydrolysis and condensation, and then subjecting that organopolysiloxane to an additional second hydrolysis and condensation. The high molecular weight organopolysiloxane is stable, resistant to gelling, and resistant to cracking even when formed as a thick film. A resin composition comprising the high molecular weight organopolysiloxane and a condensation catalyst is useful for sealing an optical element and for producing an optical semiconductor device.</p> |
申请公布号 |
EP1780235(A3) |
申请公布日期 |
2007.12.19 |
申请号 |
EP20060021851 |
申请日期 |
2006.10.18 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
SHIMIZU, HISASHI;SHIOBARA, TOSHIO;KASHIWAGI, TSUTOMU |
分类号 |
C08G77/04;C08G77/06;C08G77/08;C08G77/14 |
主分类号 |
C08G77/04 |
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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