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:
May. 16, 1995
Filed:
Feb. 25, 1993
Applicant:
Inventors:
John C Leighton, Flanders, NJ (US);
Rama S Chandran, South Bound Brook, NJ (US);
Assignee:
National Starch and Chemical Investment Holding Corporation, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D04H / ;
U.S. Cl.
CPC ...
428288 ; 5263031 ; 526304 ; 528230 ; 548547 ; 560160 ; 562567 ; 564208 ; 427392 ; 428290 ; 428361 ;
Abstract
In a process for the preparation of N-alkylol amide monomers wherein a polymerizable amide is reacted with an aldehyde, the improvement which comprises adjusting the pH of the resulting N-alkylol amide monomer to pH 10-11 and adding thereto an alkali or alkali earth metal borohydride at a temperature of -10.degree. to 20.degree. C. so as to convert the residual free aldehyde in the equilibrium mixture to the corresponding alcohol.