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:
Jul. 16, 1996
Filed:
Aug. 04, 1995
Mahmood Sabahi, Baton Rouge, LA (US);
Kenneth C Lilje, Baton Rouge, LA (US);
Albemarle Corporation, Richmond, VA (US);
Abstract
The reaction between a Michael donor corresponding to the formula Z--CH(E)(E') (e.g., a dialkyl malonate) and a Michael acceptor corresponding to the formula CTT'.dbd.CT'G (e.g., an alkyl acrylate or alkyl acrylate dimer) in the presence of a solid inorganic base catalyst is expedited by simultaneously feeding the reactants through a column of the solid inorganic base catalyst at a temperature of about 25.degree.-120.degree. C. to form an effluent containing a product corresponding to the formula Z'--C(E)(E').sub.p --Q.sub.s, in which formulas T, T', and T' are independently selected from hydrogen, G', and organic groups, with the proviso that at least one of T, T', and T' must be hydrogen; E, E', G, and G' are independently selected from --CN, --COOR, and --C(O)R' electron withdrawing groups; E' is hydrogen or a --COOR, --C(O)R', or --CN electron withdrawing group; R and R' represent alkyl or cycloalkyl groups of up to 30 carbons; Z is hydrogen or an alkyl or cycloalkyl group of up to 30 carbons; Z' is Z or --[CTT'--CT'G].sub.w --CTT'--CHT'G; Q is --[CTT'--CT'G].sub.t --CTT'--CHT'G; p is zero or one; s is respectively two or one; and each of t and w represents zero or a positive integer such that the sum of t and w in a molecule is 0-30.