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:
Jan. 12, 1999
Filed:
Sep. 08, 1997
Applicant:
Inventors:
Thomas Burkhart, Walluf, DE;
Siegfried Wallenwein, Buettelborn, DE;
Gerhard Brindoepke, Sulzbach, DE;
Gerd Walz, Wiesbaden, DE;
Assignee:
Vianora Resins GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528129 ; 528146 ; 528159 ; 528 48 ; 528 75 ; 528486 ; 528493 ; 528503 ; 525123 ; 525133 ; 525134 ; 4284231 ; 4284139 ; 428460 ;
Abstract
Urethane-modified novolaks which are prepared by simultaneous reaction of a monohydric or polyhydric phenol (A) with an oxo compound (aldehyde or ketone) (B) and a urethane (C) in the presence of an acidic catalyst (D) at an elevated temperature of 60.degree. to 200.degree. C. and contain no interfering amounts of free starting phenol, and their use as adhesion improvers in rubbers, in particular rubbers containing reinforcing media such as steel cord or textile fibers.