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:
Nov. 11, 1980
Filed:
May. 07, 1979
Applicant:
Inventors:
Kenneth P Satterly, Chadds Ford, PA (US);
Frank E Livingston, Cardiff, DE (US);
Assignee:
Witco Chemical Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
521172 ; 521 99 ; 525440 ; 528 80 ; 528307 ; 260-23 ;
Abstract
A waste stream of nonvolatiles is recovered (NVR) as a by-product from the oxidation of cyclohexane to cyclohexanone and cyclohexanol in the process for making adipic acid. The NVR is partially dehydrated, and then reacted with an esterifying polyol to form a polyester polyol product which is useful in producing polyurethane foams. A particularly useful end-product is a rigid polyurethane foam having good cell structure and a density of at least 2.0 lb./cu. ft.