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:
Mar. 27, 2001
Filed:
May. 15, 2000
Applicant:
Inventors:
Deborah Diane Graves, Bluebell, PA (US);
Thomas Duncan Rose, Levittown, PA (US);
David James Swank, Holland, PA (US);
Charles Chao Wu, North Wales, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 6/300 ;
U.S. Cl.
CPC ...
C07C 6/300 ;
Abstract
N,N-disubstituted formamides, wherein the substituents are selected to provide formamides which have low volatility, are useful as halogenation catalysts. Such catalysts are generally less hazardous to use than typical formamide halogenation catalysts because toxic catalyst by-products are also less volatile. Methods for using such catalysts are provided.