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. 25, 2003
Filed:
Jun. 28, 2001
Applicant:
Inventors:
Michel Florentine Jozef Berghmans, Breda, NL;
Kurt Ernest Irma Du Mong, Leefdaal, BE;
Karel Cornelis Bleijenberg, Breda, NL;
Guy Lode Magda Maria Verbist, Amersfoort, NL;
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/22 ;
U.S. Cl.
CPC ...
C08J 9/22 ;
Abstract
Porous polyvinylarene particles having a apparent density d of 600 to 200 kg/m , which particles contain a nucleating agent and 2.0% by weight or less, based on the amount of polyvinylarene, of a volatile organic blowing agent. The invention also relates to a process for the preparation of these particles as well as to the use of these particles in the preparation of expanded particles and foamed articles.