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:
Sep. 13, 1994
Filed:
Dec. 20, 1993
Mahmood Sabahi, Baton Rouge, LA (US);
Robert G Irwin, Prairieville, LA (US);
Albemarle Corporation, Richmond, VA (US);
Abstract
Dialkyl malonate/alkyl acrylate Michael addition product mixtures having at least three acceptor moieties in a substantial number of the molecules can be consistently prepared without the need for long reaction times or the use of a large excess of the acceptor when the reaction is effected by gradually adding one molar proportion of a dialkyl malonate to at least three molar proportions of an alkyl acrylate which has been preheated to 60.degree.-80.degree. C. in admixture with an initiator and a phase transfer catalyst. In a preferred embodiment, the preheated mixture is maintained at 60.degree.-80.degree. C. for at least one hour before the dialkyl malonate is added in order to increase the percentage of product composed of the heavier components.