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:
Mar. 09, 1993
Filed:
Mar. 27, 1991
Applicant:
Inventors:
Ulrich Heitmann, Memmingen, DE;
Heribert Rossel, Buxheim, DE;
Assignee:
Metzeler Schaum GmbH, Memmingen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08G / ;
U.S. Cl.
CPC ...
521 99 ; 521128 ; 521155 ; 521170 ; 521906 ;
Abstract
A process for preparing a flame-resistant, elastic soft polyurethane foam includes admixing a portion of expanded graphite having a particle size of from 0.2 to 1 mm as a flame retardant and a portion of melamine, with a foam reaction mixture of polyol and polyisocyanate.