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. 21, 1991
Filed:
May. 02, 1989
Applicant:
Inventors:
Fritz E Kempter, Mannheim, DE;
Franz Matejcek, Lambsheim, DE;
Werner Neubach, Ludwigshafen, DE;
Klaus Flory, Leimen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
524598 ; 528245 ;
Abstract
Aqueous nonwoven binders that give reduced formaldehyde emission on curing are based on condensation products of urea or derivatives thereof, formaldehyde and glyoxal in a molar ratio, based on the solid binder, of from 1.5 to 2.5 moles of formaldehyde and from 0.1 to 0.5 mole of glyoxal per mole of the total urea used.
Kempter, Fritz. (1991). Preparation of aqueous nonwoven binders of low formaldehyde emission on (U.S. Patent No. 5017641). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5017641
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