Title:
SILICONE OIL COMPOUND FOR ANTIFOAMING AGENT AND ANTIFOAMING COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/220097
Kind Code:
A1
Abstract:
Provided are: an oil compound which has excellent prolonged antifoaming capabilities, which, in particular, has good initial antifoaming properties even in an alkaline foam liquid, and which has little degradation over time; and an antifoaming composition containing the oil compound. A silicone oil compound (A) for an antifoaming agent is a cross-linked product of components (a) and (b), (a) being 100 parts by mass of a hydrophobic organopolysiloxane having a viscosity at 25°C of 10-100,000 mm2/s, and (b) being 1-15 parts by mass of a fine powder silica. The silicone oil compound for an antifoaming agent is characterized in that in a grain size distribution of an organopolysiloxane-silica crosslinked product, obtained by measuring a substance in which the oil compound is diluted with toluene by using a single particle optical sizing (SPOS) method, the median diameter in a volume-standard particle size standard is 5-25 μm.
Inventors:
SAKURAI TAKATO (JP)
Application Number:
PCT/JP2022/015343
Publication Date:
October 20, 2022
Filing Date:
March 29, 2022
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
B01D19/04; C08K3/36; C08L83/04
Domestic Patent References:
| WO2016021427A1 | 2016-02-11 | |||
| WO2019241498A1 | 2019-12-19 |
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Attorney, Agent or Firm:
USHIKI & ASSOCIATES (JP)
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