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. 16, 2016
Filed:
Sep. 09, 2013
Applicant:
Rohm and Haas Company, Philadelphia, PA (US);
Inventors:
Andrew M. Lemonds, Lake Jackson, TX (US);
Minh N. Ngo, Philadelphia, PA (US);
Muhunthan Sathiosatham, Chalfont, PA (US);
Donald Lee Zolotorofe, Ivyland, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/06 (2006.01); C07C 67/20 (2006.01); C07C 303/24 (2006.01); C07C 231/06 (2006.01); C07C 231/12 (2006.01); C07C 67/08 (2006.01);
U.S. Cl.
CPC ...
C07C 51/06 (2013.01); C07C 67/08 (2013.01); C07C 67/20 (2013.01); C07C 231/06 (2013.01); C07C 231/12 (2013.01); C07C 303/24 (2013.01);
Abstract
A multistage process for the preparation of methacrylic acid and esters thereof via the hydrolysis of ACH, cracking the hydrolysis products, and converting the cracked products to the desired acid or ester, wherein the average temperature in the first hydrolysis reactor is from 55 C to 70 C.