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:
May. 29, 2001
Filed:
Feb. 25, 2000
Applicant:
Inventors:
Frank Braun, Ludwigshafen, DE;
Klaus Hahn, Kirchheim, DE;
Manfred Leibach, Ludwigshafen, DE;
Wolfram Kögel, Mannheim, DE;
Isidoor De Grave, Wachenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/18 ; C08J 9/228 ; C08J 9/22 ;
U.S. Cl.
CPC ...
C08J 9/18 ; C08J 9/228 ; C08J 9/22 ;
Abstract
A process comprises producing expanded polyolefin particles by impregnating polyolefin granules with a volatile blowing agent in suspension under pressure, and then releasing the pressure. The suspension medium has a lower density than the polyolefin granules and the suspension is practically free from suspension agents.