Defoamers for aqueous systems

Details Defoamers for aqueous systems Defoamers for aqueous systems

B - Operations, Transporting

01

D

B01D 19/04 (2006.01) B01F 17/42 (2006.01) B01F 17/56 (2006.01) C09D 5/02 (2006.01) C11D 1/72 (2006.01) C11D 3/22 (2006.01)

Patent

CA 2413840

The products of the reaction of epichlorohydrin and compounds having the formula (II) R3(EO)n(PO)mOH wherein R3 is an alkyl, alkenyl or arenyl group having from 4 to 22 carbon atoms; a substituted alkyl or alkenyl group having from 4 to 22 carbon atoms wherein; n is a number from 0 to 50 and m is a number from 0 to 50; wherein the mole ratio of epichlorohydrin to (II) is from about 0.60/1 to about 2/1 are used in defoaming compositions for defoaming aqueous systems such as latex paints.

L'invention concerne des produits de réaction d'épichlorohydrine et de composés de formule (II) dans laquelle R3 représente alkyle, alcényle ou un groupe arényle ayant 4 à 22 atomes de carbone, un groupe substitué alkyle ou alcényle ayant 4 à 22 atomes de carbone, n est un nombre compris entre 0 et 56 et m est un nombre entre 0 et 50, le rapport molaire épichlorohydrine/(II) est d'environ 0,60/1 à environ 2/1. Lesdits produits sont utilisés dans des compositions antimousse servant à prévenir la formation de mousse de systèmes aqueux, tels que des peintures au latex.

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