申请人:Arch Specialty Chemicals, Inc.
公开号:US20040127070A1
公开(公告)日:2004-07-01
An organohydrosiloxane composition comprising:
a) one or more organohydrosiloxane compounds, each having at least one [—HSiR—O—] unit, wherein R═C
1
-C
18
linear, branched, or cyclic alkyl, C
1
-C
18
linear, branched, or cyclic alkoxy, or substituted or unsubstituted aryl, and
b) an antioxidant compound shown in Formula (1)
1
wherein the antioxidant compound is a phenolic compound and is present in a concentration from about 1 ppm to about 5,000 ppm and wherein R
1
through R
5
can each independently be H, OH, C
1
-C
18
linear, branched, or cyclic alkyl, C
1
-C
18
linear, branched, or cyclic alkoxy or substituted or unsubstituted aryl. The compositions of present invention exhibit stability and significantly extend the shelf life of organohydrosiloxane products and allow greater flexibility in handling these products in chemical processes or semiconductor manufacturing. The resulting stabilization of siloxanes prevents the possibility of complete polymerization (i.e., solidification) of product in chemical delivery lines or valves, which lowers equipment maintenance and costs and reduces time the machinery is out of production.
一种有机氢硅氧烷组合物,包括
a) 一种或多种有机氢硅氧烷化合物,每种化合物都具有至少一个[-HSiR-O-]单元,其中 R═C
1
-C
18
直链、支链或环状烷基,C
1
-C
18
直链、支链或环状烷氧基,或取代或未取代的芳基,以及
b) 如式(1)所示的抗氧化剂化合物
1
其中抗氧化剂化合物为酚类化合物,存在浓度约为 1 ppm 至约 5,000 ppm,其中 R
1
至 R
5
可以各自独立地为 H、OH、C
1
-C
18
直链、支链或环状烷基,C
1
-C
18
直链、支链或环状烷氧基或取代或未取代的芳基。本发明的组合物具有稳定性,可显著延长有机氢硅氧烷产品的保质期,并可在化学工艺或半导体制造中更灵活地处理这些产品。由此产生的硅氧烷稳定性防止了产品在化学输送线或阀门中完全聚合(即凝固)的可能性,从而降低了设备维护和成本,减少了机器停产时间。