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. 03, 2002
Filed:
Jun. 11, 2001
Applicant:
Inventors:
Guiscard Glück, Mainz, DE;
Franz-Josef Dietzen, Ludwigshafen, DE;
Klaus Hahn, Kirchheim, DE;
Gerd Ehrmann, Deidesheim, DE;
Assignee:
BASF Aktiengesellshaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/20 ; C08J 9/22 ;
U.S. Cl.
CPC ...
C08J 9/20 ; C08J 9/22 ;
Abstract
A process for preparing expandable particulate styrene polymers wherein from 5 to 50% by weight of expanded graphite and also, if desired, from 2 to 20% by weight of a phosphorus compound, are present as flame retardants, by suspension polymerization of styrene in the presence of the flame retardants.