The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1981
Filed:
Mar. 12, 1979
Alan S Baker, Slough, GB;
Imperial Chemical Industries Limited, London, GB;
Abstract
Compositions useful as surfactants in the emulsification of oils in aqueous media are obtained by blending two types of polyester which are the products of condensation of an alk(en)yl succinic anhydride with a polyalkylene glycol, the one type being derived from an anhydride in which the alk(en)yl group contains 40-500 carbon atoms, e.g. polyisobutenyl succinic anhydride, and the other type being derived from an anhydride in which the alk(en)yl group contains 8-18 carbon atoms, e.g. dodecenyl succinic anhydride. The compositions are superior in effect to either type of polyester separately, in enabling emulsions of high stability to be produced with a low energy input.