申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20160311982A1
公开(公告)日:2016-10-27
Provided are a Gemini-type alkyl-polyoxyalkylene-modified silicone suitable for use in preparing a silicone emulsion; a production method of thereof; and a defoaming agent composition containing such Gemini-type alkyl-polyoxyalkylene-modified silicone.
The Gemini-type alkyl-polyoxyalkylene-modified silicone is expressed by the following general formula (A):
wherein each of R
1
, R
2
, R
3
, R
4
, R
5
and R
6
represents an alkyl group or the like; n represents an integer of 0 to 300; and (B) represents a group expressed by the following general formula (1) or general formula (2):
wherein each of R
7
and X represents a hydrocarbon group; R
8
represents a hydrogen atom, a hydrocarbon group, a formyl group or an acyl group; and a and b represent numbers satisfying 2≦a≦200 and 0≦b≦200, provided that a+b=2 to 200.