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:
Feb. 27, 2018
Filed:
May. 27, 2013
Applicant:
Akzo Nobel Chemicals International B.v., Amersfoort, NL;
Inventor:
Ove Nordin, Kvissleby, SE;
Assignee:
Akzo Nobel Chemicals International B.V., Arnhem, NL;
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/20 (2006.01); B01J 13/18 (2006.01); B01J 13/14 (2006.01); B29C 67/24 (2006.01); C08J 9/32 (2006.01); B29C 70/66 (2006.01);
U.S. Cl.
CPC ...
C08J 9/20 (2013.01); B01J 13/14 (2013.01); B01J 13/18 (2013.01); B01J 13/185 (2013.01); B29C 67/247 (2013.01); B29C 70/66 (2013.01); C08J 9/32 (2013.01); C08J 2203/22 (2013.01); C08J 2333/26 (2013.01); C08J 2433/22 (2013.01); C08J 2433/26 (2013.01); Y10T 428/2982 (2015.01);
Abstract
The present invention relates to thermally expandable thermoplastic microspheres comprising a polymer shell made from ethylenically unsaturated monomers encapsulating a propellant, said ethylenically unsaturated monomers comprising from 21 to 80 wt % of methacrylamide and from 20 to 70 wt % methacrylonitrile, the total amount of methacrylamide and methacrylonitrile being from 70 to 100 wt % of the ethylenically unsaturated monomers. Furthermore, the invention relates to production and use of such microspheres.