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:
Jan. 21, 2003
Filed:
Feb. 23, 2000
William David Weir, Levittown, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
A process is provided for preparing a low odor composition containing a dicyclopentenyl ester including the steps of preparing a distillation mixture containing the dicyclopentenyl ester and from 10 to 10,000 parts per million by weight based on weight of the dicyclopentenyl ester, of a suitable inhibitor; distilling the distillation mixture at a temperature in the range of 140° C. to 250° C.; collecting a first distillation fraction of the dicyclopentenyl ester; and then collecting a second distillation of the dicyclopentenyl ester; wherein the level of dicyclopentenyloxy(meth)acrylate in the second distillation fraction is in the range of 0 to 0.2 weight %, based on the weight of the dicyclopentenyl ester in the second distillation fraction. The second distillation fraction provides a low odor composition of the dicyclopentenyl ester which is useful as a reactive coalescent.