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:
Aug. 01, 2017
Filed:
Sep. 04, 2013
Applicant:
Akzo Nobel Chemicals International B.v., Amersfoort, NL;
Inventors:
Lars-Olof Svedberg, Kvissleby, SE;
Per Ajdén, Bergeforsen, SE;
Assignee:
Akzo Nobel Chemicals International B.V., Arnhem, NL;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J 9/228 (2006.01); B29C 44/34 (2006.01); C08J 9/00 (2006.01); B29K 105/00 (2006.01); B29K 105/04 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01);
U.S. Cl.
CPC ...
C08J 9/228 (2013.01); B29C 44/3415 (2013.01); B29C 44/3461 (2013.01); C08J 9/0066 (2013.01); B29K 2067/003 (2013.01); B29K 2077/00 (2013.01); B29K 2105/0076 (2013.01); B29K 2105/048 (2013.01); C08J 2203/22 (2013.01); C08J 2300/00 (2013.01);
Abstract
The invention relates to a method of preparing expanded thermoplastic microspheres from thermally expandable thermoplastic microspheres comprising a polymer shell encapsulating a foaming agent, the method comprising heating the expandable microspheres within a flexible container () to effect expansion of said microspheres and withdrawing gas from said flexible container (). The invention further relates to an expansion device for preparing such expanded thermoplastic microspheres.