EP 0254208 B1 19911016 - LOW FOAMING AND/OR FOAM INHIBITING MIXTURES OF TENSIDES AND THEIR USE
Title (en)
LOW FOAMING AND/OR FOAM INHIBITING MIXTURES OF TENSIDES AND THEIR USE
Publication
Application
Priority
DE 3625078 A 19860724
Abstract (en)
[origin: US4780237A] Low-foam or foam-depressing surfactant mixtures based on water-soluble and/or water-emulsifiable polyalkylene glycol ethers of relatively long-chain alcohols containing components I, II and, if desired, III in the quantities indicated: (I) from 20 to 80% by weight of polyethylene glycol ethers corresponding to the following general formula R1-O-(CH2CH2O)n-R2 (I) in which R1 is a straight-chain or branched C8-C18 alkyl or alkenyl radical, R2 is a C4-C8 alkyl radical and n is a number of from 3 to 7, (II) from 10 to 40% by weight of alkyl polyalkylene glycol mixed ethers corresponding to the following general formula <IMAGE> (II) in which R3 is a straight-chain or branched C8-C18 alkyl radical, x is a number of from 1 to 3 and y is a number of from 3 to 6, and (III) from 0 to 40% by weight of alkyl (poly)propylene glycol ethers corresponding to the following general formula <IMAGE> (III) in which R4 is a straight-chain or branched C16-C22 alkyl or alkenyl radical and z is a number of from 1 to 3.
IPC 1-7
IPC 8 full level
C09K 23/42 (2022.01); C11D 1/72 (2006.01); C11D 1/722 (2006.01); C11D 1/825 (2006.01); C11D 3/00 (2006.01)
CPC (source: EP US)
C11D 1/721 (2013.01 - EP US); C11D 1/8255 (2013.01 - EP US); C11D 3/0026 (2013.01 - EP US); C11D 1/72 (2013.01 - EP US); C11D 1/722 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0254208 A2 19880127; EP 0254208 A3 19890705; EP 0254208 B1 19911016; AT E68519 T1 19911115; CA 1305640 C 19920728; DE 3773781 D1 19911121; ES 2026494 T3 19920501; JP 2533555 B2 19960911; JP S6335697 A 19880216; US 4780237 A 19881025
DOCDB simple family (application)
EP 87110283 A 19870716; AT 87110283 T 19870716; CA 542845 A 19870723; DE 3773781 T 19870716; ES 87110283 T 19870716; JP 18649987 A 19870724; US 7725787 A 19870724