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. 27, 1981
Filed:
Jun. 06, 1980
Applicant:
Inventors:
Robert S De Ruiter, Downsview, CA;
Stamatis M Kambanis, Toronto, CA;
Assignee:
Reichhold Limited, Islington, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
260 / ; 528254 ; 528256 ; 528260 ; 528261 ; 528262 ; 528263 ; 528268 ; 528269 ; 528495 ; 528496 ; 528501 ; 528502 ;
Abstract
An improved process for the preparation of alkoxylated formaldehyde-amino compound resins. By using a sequential procedure, and an alkanol of up to 8 carbon atoms it is possible to remove both the water in the aqueous formaldehyde used and the water from the alkoxylation reaction azeotropically. The products of this invention afford resins of better quality, especially in terms of color and clarity, than the products derived from alcoholic formaldehyde solutions.