Process for the preparation of modified triglycerides
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsAlfred Meffert, Hermann Kluth
Life of this patent
Estimating the term…
Abstract
Process for the production of modified triglycerides which contain epoxide groups, secondary hydroxyl groups and ether groups. The invention particularly relates to the production of reaction products of epoxidized triglycerides, for example epoxidized soy oil, with polyfunctional alcohols, for example glycols. The products so prepared are valuable starting materials, particularly for the production of alkyd resins.
Claims13
A process for the partial ring opening of epoxidized triglycerides of a fatty acid mixture wherein the fatty acid mixture contains at least partly olefinically unsaturated fatty acids comprising the step of
- (A) reacting said epoxidized triglycerides with a large excess, based on epoxide groups, of at least one alcohol in the presence of a small quantity of an acidic or a strongly basic catalyst at a temperature in the range of from about 50.degree. to about 110.degree. C.;
- and
- (B) terminating the reaction after from about 30 to about 70 mole percent of the epoxide groups in the epoxidized triglycerides are opened;
- wherein the alcohol reactant in step (A) is one or more of the following:
- (i) a primary or secondary, saturated or unsaturated monofunctional alcohol containing from 1 to 8 carbon atoms,
- (ii) a bifunctional alcohol containing from 2 to 6 carbon atoms,
- (iii) a monoether of a bifunctional alcohol containing a total of from 3 to 8 carbon atoms, and
- (iv) a trifunctional alcohol containing from 3 to 6 carbon atoms;
- and
- wherein the epoxidized triglyceride in step A contains from about 5.6 to about 10% by weight of epoxide oxygen.
Dependencies are inferred from the claim text.