Defoamers
AssigneeCognis IP Management GmbH
InventorsFlorence Andrioletti, Stéphanie Merlet, Jéréemie Lapere, Maria Da Silva Marques, Benoit Abribat, William LaMarca
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Abstract
The invention is direct to ethoxylated/propoxylated fatty alcohol (meth)acrylates according to general formula (I) , R2O(CH2CH2O)p1(CH(CH3)CH2O)q(CH2CH2O)p2(O=)C-CR1=CH2 (I) in which R1 stands for hydrogen or a methyl group, R2 represents an alkyl or alkenyl radical having 12 to 22 carbon atoms, p1 and p2 independently stand for 0 or integers of 1 to 50, and q for an integer of from 1 to 50. The compounds of formula (I) are useful as defoamers for concrete and/or cement compositions.
Claims14
An ethoxylated/propoxylated fatty alcohol (meth)acrylate of formula (I),
- R2O(CH2CH2O)p1(CH(CH3)CH2O)q(CH2CH2O)p2(O=)C-CR1=CH2 (I)
- in which R1 stands for hydrogen or methyl group, R2 represents an alkyl or alkenyl group radical having 12 to 22 carbon atoms, p1 and p2 independently stand for 0 or integers of 1 to 50, and q for represents an integer of from 1 to 50.
A process for making ethoxylated/propoxylated fatty alcohol (meth)acrylates of formula (I) comprising the steps of:
- (i) alkoxylating C12-C22 fatty alcohols with 1 to 100 molar equivalents of ethylene oxide and 1 to 50 molar equivalents of propylene oxide to form a block or random alkoxylate, and
- (ii) esterifying said alkoxylate with (meth)acrylic acid.
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Dependencies are inferred from the claim text.