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1. (WO1991003540) ANTI-FOAMING AGENTS FOR MACHINE-WASHING OF CROCKERY AND BOTTLES

Pub. No.:    WO/1991/003540    International Application No.:    PCT/EP1990/001384
Publication Date: Fri Mar 22 00:59:59 CET 1991 International Filing Date: Wed Aug 22 01:59:59 CEST 1990
IPC: C11D 1/72
C11D 1/722
C11D 1/825
C11D 3/00
Applicants: HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN
SCHMID, Karl-Heinz
STANISLOWSKI, Detlev
KOREN, Karin
LANGEN, Michael
Inventors: SCHMID, Karl-Heinz
STANISLOWSKI, Detlev
KOREN, Karin
LANGEN, Michael
Title: ANTI-FOAMING AGENTS FOR MACHINE-WASHING OF CROCKERY AND BOTTLES
Abstract:
The invention concerns multi-component foam-inhibiting mixtures with surfactant properties, comprising up to 40 % by wt. of polyethyleneglycol ethers with terminal groups of formula (I): R1O-(CH2CH2O)nR2, in which R1O- = a 2-branched even alkanol residue with 16-20 C-atoms, n = 5 to 9 and R2 = a C4-C8 alkyl group and/or up to 40 % by wt. of polyethyleneglycol ether compounds not capped by terminal groups, of formula (II): R5O-(CH2CH2O)z-H, in which R5O- = a 2 branched even alkanol residue with 12-20 C-atoms and z = 2 to 5; plus 20-98 % by wt. of mixed ethers of formula (III): R6O-(EO)u-(PO)v-H in which R6O- = a straight-chain or branched-chain C8-C18 alkanol residue, EO = ethyleneglycol, PO = propyleneglycol, p = 2 to 6 and q = 3 to 7 plus, optionally, 0-80 % by wt. of polyethyleneglycol ethers capped with terminal groups, of formula (IV): R3O-(CH2CH2O)m-R4, in which R3 = a straight-chain C8-C18 alkyl residue or a branched-chain C8-C14 alkyl residue, R4 = a C4-C10 alkyl residue and m = 5 to 15 for the machine-washing of crockery and bottles. In preferred compounds, the R5O- residdue derives from 2-butyloctanol-1, 2-butyldecanol-1, 2-hexyloctanol-1, 2-hexyldecanol-1, 2-hexyldodecanol-1, 2-octyldecanol-1 or 1-octyldodecanol-1, and the R1O- residue from mixtures of 2-hexyldodecanol-1 and 2-octyldecanol-1. Advantage: highly effective and can be incorporated in liquid systems stable to alkali to give cleanly soluble aqueous concentrates.