Thickening agent based on polyether derivatives

Details Thickening agent based on polyether derivatives Thickening agent based on polyether derivatives

C - Chemistry, Metallurgy

08

G

402/252, 260/636

C08G 65/32 (2006.01) C08G 65/28 (2006.01) C09K 3/00 (2006.01) C09K 3/20 (2006.01) C11D 3/37 (2006.01)

Patent

CA 1250003

THICKENING AGENT BASED ON POLYETHER DERIVATIVES ABSTRACT OF THE DISCLOSURE A thickening agent comprising polyether derivatives of the general formula: Image wherein R1 is a substituted or unsubstituted hydrocarbon radical or an alkylphenol radical having 10 or more carbon atoms, n is 10 to 100, m is 0 to 25, and p is 1 to 3, and wherein R2 is an alkyl radical having 8 to 30 carbon atoms. These polyether derivatives are prepared by the gradual addition of a long-chain 1,2-epoxy having a chain length of 10 to 32 carbon atoms at temperatures from 100° to 200°C, to either (1) a polyethylene glycol monoether having an average molecular weight of 800 to 5000, the monoether group thereof being a substituted or unsubstituted hydrocarbon radical having at least 10 carbon atoms, or to (2) a polyethylene glycol-polypropylene glycol monoether with an average molecular weight of 850 to 6300, and having repeating ethylene oxide and propylene oxide units each forming a polyethylene glycol and polypropylene glycol block, respectively, the polypropylene glycol block having an average molecular weight of no more than 1300, and the monoether group forming the end of the polyethylene glycol block and being a substituted or unsubstituted hydrocarbon radical having at least 10 carbon atoms. This thickening agent is prepared using 0.1 to 1.0% by weight of an alkali hydroxide, referring to the total quantity of the long-chain epoxy and the monoether.

422739

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