Benzoic acid esters and their use
Patent 4791097 Issued on December 13, 1988. Estimated Expiration Date: 
March 9, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 9, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2840594 Benzoic acid ester Benzoic acid esters Preparation of alkyl carboxylates Long chain aliphatic hydrocarbon ethoxylated alcohol benzoates Self-emulsifying alkoxylate esters Patent #: 4559226 InventorsApplicationNo. 07/023767 filed on 03/09/1987US Classes:516/133, The compound contains carboxylic acid ester group (e.g., natural (glyceride) oil)560/103, Monocyclic acid moiety560/112Polyoxy alcohol moietyExaminersPrimary: Killos, Paul J.Attorney, Agent or FirmInternational ClassesC11D 3/00 (20060101)C07C 69/00 (20060101) C07C 69/78 (20060101) AbstractA method is provided for modifying foam in an aqueous surfactant composition. The method comprises admixing with the aqueous surfactant composition a foam modifying amount of a composition of the formula: ##STR1## wherein R is: (a) a branched or linear alkyl of 20 to 28 carbon atoms; or(b) ##STR2## wherein n is 9-16 and R1 is a branched or linear alkyl of 3 to 22 carbon atoms.Certain of these benzoate esters are novel, in particular: ##STR3## wherein R2 and R3 are each, independently, an alkyl of 4 to 16 carbon atoms, and the total number of carbon atoms in R2 and R3 is at least 12 carbon atoms. Preferably, R2 and R3 are each C8 H17, i.e. octyldodecyl benzoate ester.Additional novel benzoate esters used as foam enhancers have the formula: ##STR4## wherein n is 12 to 16 and R1 is a branched or linear alkyl of 3 to 22 carbon atoms. Particularly preferred esters are when n is 14, R1 is C18 H37 and R1 is C4 H9. Also, additionally, preferred esters are where n is 9 and R1 is C16 H33.Field of SearchMonocyclic acid moiety |
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