Title:
ANTIFOAM COMPOSITION AND ADMIXTURE FOR HYDRAULIC COMPOSITION INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2019/189922
Kind Code:
A1
Abstract:
[Problem] To provide: an antifoam composition which achieves both an antifoaming property and compatibility in an admixture for a hydraulic composition; and an admixture for a hydraulic composition with which concrete having less coarse bubble marks on the surface thereof and an excellent surface appearance can be produced. [Solution] This antifoam composition includes: a polyoxyalkylene compound (A); and a phosphoric acid ester compound (B) represented by general formula (3) (where R6 represents an alkyl group having 1-30 carbon atoms, an alkenyl group having 2-30 carbon atoms, or an aryl group having 6-30 carbon atoms, and A4O represents an oxyalkylene group having 2-4 carbon atoms, p represents an integer of 0 or 1-50, q represents an integer of 1-3, and M represents a hydrogen atom, an alkaline metal atom, a Group 2 metal atom, an ammonium group, or an organic ammonium group).
Inventors:
OKADA TOMOHISA (JP)
TSUSHIMA TARO (JP)
TSUSHIMA TARO (JP)
Application Number:
PCT/JP2019/014400
Publication Date:
October 03, 2019
Filing Date:
March 30, 2019
Export Citation:
Assignee:
TOHO CHEMICAL IND CO LTD (JP)
International Classes:
C04B24/32; B01D19/04; C04B28/02; C08G65/335; C08L71/00; C08L71/02
Foreign References:
| CN105385426A | 2016-03-09 | |||
| JPS61111950A | 1986-05-30 | |||
| JPS6451353A | 1989-02-27 | |||
| JP2012041198A | 2012-03-01 |
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