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. 23, 1993
Filed:
Apr. 02, 1993
Applicant:
Inventors:
Pierre Barthelemy, Pietrebais, BE;
Annie Leroy, Fauvillers, BE;
Assignee:
Solvay (Societe Anonyme), Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521117 ; 521131 ; 521155 ;
Abstract
The invention relates to flame-retardant rigid polyurethane foams produced using halogenated polyetherpolyols and at least one blowing agent chosen from 1,1-dichloro-1-fluoroethane and 1,1,1-trifluoro-2,2-dichloroethane in the presence of ethylene glycol. It also relates to compositions intended for their manufacture and to a process for manufacturing them. The rigid foams according to the invention exhibit an improved fire resistance and an improved dimensional stability.