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1. (WO2017148750) DEFOAMER COMPOSITIONS FOR DETERGENTS

Pub. No.:    WO/2017/148750    International Application No.:    PCT/EP2017/053946
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: B01D 19/04
C11D 3/00
C11D 3/37
C11D 3/16
C11D 3/12
C08L 83/04
Applicants: WACKER CHEMIE AG
Inventors: RAUTSCHEK, Holger
BECKER, Richard
BREHM, Christof
Title: DEFOAMER COMPOSITIONS FOR DETERGENTS
Abstract:
The invention relates to new defoamer compositions, containing (A) a defoamer compound containing (a1) at least one organosilicon compound that has units of the formula Ra(R1O)bR2 cSiO(4-a-b-c)/2 (I), wherein R and R1 have the meaning specified therefor in claim 1, R2 means a monovalent, optionally substituted, aromatic hydrocarbon residue, which is bonded to the Si atom by means of a ring carbon atom, a, b, and c are each 0, 1, 2, or 3, with the stipulation that the sum a+b+c is ≤ 3, that c is different from 0 in 1-100% of all units of formula (I), and that the sum a+b+c equals 2 in at least 50% of all units of formula (I), (a2) at least one additive selected from (a21) filler particles and/or (a22) organopolysiloxane resin consisting of units of the formula R3 d(R4O)eSiO(4-d-e)/2 (II), wherein R3, R4, d, and e have the meaning specified therefor in claim 1, wherein the sum d+e is ≤ 3 and wherein the sum d+e equals 2 in less than 50% of all units of formula (II), and optionally (a3) an organosilicon compound that has units of the formula R5 g(R6O)hSiO(4-g-h)/2 (III), wherein R5, R6, h, and g have the meaning specified therefor in claim 1, wherein the sum g+h is ≤ 3 and wherein the sum g+h equals 2 in at least 50% of all units of formula (III), (B) polypropylene glycols and/or polypropylene glycol-polyethylene glycol copolymers, which can be terminally etherified or esterified, optionally (C) polyether-modified siloxanes, optionally (D) organic compounds, and optionally (F) further additives.