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:
Jul. 21, 1987
Filed:
Aug. 04, 1986
Applicant:
Inventors:
Peter Haas, Haan, DE;
Hans-Ulrich Weber, Monheim, DE;
Claus-Dieter Sommerfeld, Much, DE;
Manfred Giersig, Cologne, DE;
Rolf Wiedermann, Odenthal, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen Bayerwerk, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521167 ; 252182 ; 521164 ; 521902 ; 528 81 ; 528 85 ; 560196 ;
Abstract
Polyester polyols corresponding to the formula ##STR1## in which R.sub.1, Z, x, A.sub.1, A.sub.2, A.sub.3, A.sub.4, A.sub.5, A.sub.6, A.sub.7 and A.sub.8 each represent specified groups or values are made by reacting (a) a dicarboxylic acid or derivative thereof or anhydride thereof with (b) a tris-alkanolamine and/or tetrakis-alkanol diamine. These polyester polyols are particularly useful in the production of polyurethane and polyisocyanurate foams.