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:
Sep. 16, 1997
Filed:
May. 07, 1996
Applicant:
Inventors:
Shinichi Asako, Yamato, JP;
Hajime Uchida, Yokosuka, JP;
Assignees:
Air Products and Chemicals, Inc., Allentown, PA (US);
Nippon Nyukazai Co. Ltd., Kawasaki, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521137 ; 521122 ;
Abstract
In a process for the preparation of rigid polyurethane foam from a polyol and a polyisocyanate, it is possible to prepare rigid polyurethane foam by using an aqueous polymer emulsion comprising a polymer of ethylenically unsaturated monomers whereby the amount of chlorofluorocarbon used can be decreased or eliminated.