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:
Aug. 27, 1991
Filed:
Sep. 14, 1989
Applicant:
Inventors:
Arno Gardziella, Witten-Rudinghausen, DE;
Alois Kwasniok, Iserlohn, DE;
Peter Adolphs, Menden-Halingen, DE;
Ralf Wetzig, Iserlohn, DE;
Assignee:
Rutgerswerke AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
523143 ; 524541 ; 528162 ;
Abstract
A granular molding material with a binder comprising a phenol novolac and a polyisocyanate which hardens upon addition of amine catalysts wherein the molar ratio of phenol to formaldehyde in the novolac is 1:0.25 to 1:0.5 and has the formula ##STR1## wherein R, R' and R' are individually selected from the group consisting of hydrogen, alkyl of 1 to 12 carbon atoms, hydroxy, cycloalkyl of 3 to 12 carbon atoms and an anellated ring and X is an integer from 0 to 4 or >4 with the percent molar distribution based on X is as follows: