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:
Dec. 26, 1995
Filed:
Nov. 14, 1994
Applicant:
Inventors:
Wolfgang Hesse, Taunusstein, DE;
Klaus Rauhut, Wiesbaden, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528155 ; 528129 ; 528153 ; 523400 ; 523424 ;
Abstract
Resols which are suitable for use as binders for cements, laminates, impregnations and abrasives having low after-shrinkage have a free phenol content of less than 5% by weight and are in the form of mixed condensates of trifunctional phenols with respect to formaldehyde and alkylidenepolyphenols in a molar ratio of phenolic hydroxyl groups in the trifunctional phenols to hydroxyl groups in the alkylidenepolyphenols of 9:1 to 3:7 with formaldehyde in a molar ratio of the sum of phenolic hydroxyl groups to formaldehyde of 1:1.2 to 1:2.0.