Rigid rod molecules containing two Si(OMe)3 or SiMe(OMe)2 groups for hybrid materials synthesis
摘要:
The synthesis of new bis(trimethoxysilyl) and bis(dimethoxymethylsilyl)arene compounds containing rigid organic groups such as stilbenyl, diphenylacetylene or diphenylbut-1,3-diyne is reported. The Heck type reaction constituted a convenient route to these compounds. since this coupling reaction appeared compatible with the presence of Si(OR)(3) groups. (C) 2001 Elsevier Science B.V. All nights reserved.
Rigid rod molecules containing two Si(OMe)3 or SiMe(OMe)2 groups for hybrid materials synthesis
摘要:
The synthesis of new bis(trimethoxysilyl) and bis(dimethoxymethylsilyl)arene compounds containing rigid organic groups such as stilbenyl, diphenylacetylene or diphenylbut-1,3-diyne is reported. The Heck type reaction constituted a convenient route to these compounds. since this coupling reaction appeared compatible with the presence of Si(OR)(3) groups. (C) 2001 Elsevier Science B.V. All nights reserved.
Curable silicone resin composition and reactive silicon compounds
申请人:——
公开号:US20030130389A1
公开(公告)日:2003-07-10
A curable silicone resin composition comprises (A) an uncured silicone resin having units of the formula (R*)
a
(R)
b
SiO
(4−a−b)/2
, where each R* is a functional group capable of reacting with Si—OH and/or Si-alkoxy groups and each R is a nonfunctional monovalent hydrocarbon group, a+b is from 1.0 to 3.0 and each molecule of uncured silicone resin contains an average of at least two groups R*, and (B) a silanol or hydrolysable compound of the formula (I) where R′ represents a hydroxyl group or a hydrolysable group; each R″ represents hydrogen, a monovalent hydrocarbon which optionally is substituted, or a group within the above definition of R′; and Ar is a substantially nonflexible linkage including at least one para-arylene moiety, so that the groups (R′)
2
R″Si— are spatially separated.
The synthesis of new bis(trimethoxysilyl) and bis(dimethoxymethylsilyl)arene compounds containing rigid organic groups such as stilbenyl, diphenylacetylene or diphenylbut-1,3-diyne is reported. The Heck type reaction constituted a convenient route to these compounds. since this coupling reaction appeared compatible with the presence of Si(OR)(3) groups. (C) 2001 Elsevier Science B.V. All nights reserved.