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:
Oct. 25, 2011
Filed:
Jun. 01, 2009
Keith F. Briegel, Houston, TX (US);
Michael Stanley Decourcy, Houston, TX (US);
James Elder, Houston, TX (US);
James Jerrick Juliette, Houston, TX (US);
Joy Lydon Mendoza, Lansdale, PA (US);
Keith F. Briegel, Houston, TX (US);
Michael Stanley DeCourcy, Houston, TX (US);
James Elder, Houston, TX (US);
James Jerrick Juliette, Houston, TX (US);
Joy Lydon Mendoza, Lansdale, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention relates to recovery of aqueous (meth)acrylic acid by condensation of a (meth)acrylic acid-containing stream to produce aqueous (meth)acylic acid having a higher concentration of (meth)acrylic acid and a lower concentration of formaldehyde, i.e., not more than 0.1 weight %, than the aqueous (meth)acrylic acid produced using hithertofore known separation methods. The (meth)acrylic acid-containing stream may be the raw product stream of catalytic oxidation at least one C-Calkane or alkene.