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. 02, 2014
Filed:
Jun. 18, 2009
Hanno R. Van Der Wal, Hoek, NL;
Ronald Wevers, Terneuzen, NL;
Freddy Van Damme, Bruges, BE;
Francois M. Casati, Pfaffikon, CH;
Georges Kanaan, Molenbeek-Saint-Jean, BE;
Fernand Pla, Nancy, FR;
Sandrine Hoppe, Nancy, FR;
Bart Noordover, Terneuzen, NL;
Christian Fonteix, Nancy, FR;
Hanno R. Van der Wal, Hoek, NL;
Ronald Wevers, Terneuzen, NL;
Freddy Van Damme, Bruges, BE;
Francois M. Casati, Pfaffikon, CH;
Georges Kanaan, Molenbeek-Saint-Jean, BE;
Fernand Pla, Nancy, FR;
Sandrine Hoppe, Nancy, FR;
Bart Noordover, Terneuzen, NL;
Christian Fonteix, Nancy, FR;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Polystyrene is dispersed into a polyol via a mechanical dispersion process. A stabilizer is present to stabilize the dispersed polymer particles. The stabilizer includes a copolymer of (1) from 10 to 70% by weight of a branched polyol which has a molecular weight of from 4000 to 20,000, from 0.2 to about 1.2 polymerizable ethylenically unsaturated groups per molecule and from about 3 to about 8 hydroxyl groups per molecule with (2) from 30 to 90% by weight of styrene or a mixture of styrene and one or more other low molecular weight monomers.