| 摘要 |
PROBLEM TO BE SOLVED: To provide an addition-crosslinkable silicone resin composition. SOLUTION: The addition-crosslinkable silicone resin composition comprises (1) a polyorganosiloxane of general formula R<SP>1</SP><SB>a</SB>R<SP>2</SP><SB>b</SB>R<SP>3</SP><SB>c</SB>SiO<SB>(4-a-b-c)/2</SB>(I), (2) a polyorganosiloxane of general formula R<SP>1</SP><SB>d</SB>H<SB>e</SB>R<SP>3</SP><SB>f</SB>SiO<SB>(4-d-e-f)/2</SB>(II), or, instead of the components (1) and (2), (3) a polyorganosiloxane of the general formula R<SP>1</SP><SB>g</SB>R<SP>2</SP><SB>h</SB>R<SP>3</SP><SB>i</SB>H<SB>k</SB>SiO<SB>(4-g-h-i-k)/2</SB>(III), (4) a polyorganosiloxane of general formula R<SP>1</SP><SB>l</SB>R<SP>2</SP><SB>m</SB>R<SP>3</SP><SB>n</SB>SiO<SB>(4-l-m-n)/2</SB>(IV), and, additionally or instead of component (4), (5) a polyorganosiloxane of the general formula R<SP>1</SP><SB>o</SB>H<SB>p</SB>R<SP>3</SP><SB>q</SB>SiO<SB>(4-o-p-q)/2</SB>(V), wherein, in the (1) to (5), R2 is a monovalent alkenyl radical and H is a hydrogen atom, and (6) an enough amount of a catalyst which promotes the addition of Si-bonded hydrogen to aliphatic double bonds. COPYRIGHT: (C)2005,JPO&NCIPI
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