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:
Feb. 28, 1978
Filed:
Jul. 19, 1976
Applicant:
Inventors:
Thomas Stewart, Andalusia, PA (US);
Frederick W Landau, Havertown, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560218 ; 203 60 ;
Abstract
A continuous process for the preparation of acrylic and methacrylic acid esters by conventional esterification, where sufficient substantially anhydrous product ester is added to the esterification reactor to satisfy the ester/alkanol and ester/water azeotropes, the low boiling azeotropes are recovered, thereby removing crude product ester, unreacted alkanol and water of esterification from the esterification reactor, while leaving substantially all the high-boiling unreacted acrylic or methacrylic acid in the reactor.