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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.:

US 9095832 B1

PDFFull Text
Date of Patent:
Aug. 04, 2015

Filed:

Jul. 21, 2014

Method and apparatus for preparing polymer beads of uniform particle size by suspension polymerisation

Applicant:

Thermax Limited, Pune, Maharashtra, IN;

Inventors:

Apte Ashutosh, Pune, IN;

Naik Shirish, Pune, IN;

Assignee:

Thermax Limited, Pune, IN;

Attorney:

Klein, O'Neill & Singh, LLP

Primary Examiner:

William Cheung

Int. Cl.
CPC ...
B01J 10/00 (2006.01); B01J 14/00 (2006.01); B01J 19/18 (2006.01); B01J 49/00 (2006.01); B01J 39/20 (2006.01); C08F 2/04 (2006.01); B01F 15/02 (2006.01); B01J 4/00 (2006.01); B01F 3/08 (2006.01); C08F 2/01 (2006.01); B01J 19/24 (2006.01); C08F 2/20 (2006.01); C08F 12/08 (2006.01); B01J 19/00 (2006.01);
U.S. Cl.
CPC ...
B01J 14/00 (2013.01); B01F 3/0807 (2013.01); B01F 15/024 (2013.01); B01J 4/002 (2013.01); B01J 4/004 (2013.01); B01J 19/0053 (2013.01); B01J 19/18 (2013.01); B01J 19/185 (2013.01); B01J 19/241 (2013.01); C08F 2/01 (2013.01); C08F 2/04 (2013.01); C08F 2/20 (2013.01); C08F 12/08 (2013.01); B01J 2219/0004 (2013.01); B01J 2219/00042 (2013.01); B01J 2219/00094 (2013.01);
Abstract

Monomer solution and liquid solution immiscible with the monomers in the monomer solution are cocurrently jetted upwardly in a pulsating manner in a reaction vessel. Monomer droplets are allowed to rise up in a controlled and smooth manner under the dynamic forces exerted by differential flow rate and differential pressure between the monomer and liquid solutions and the differential densities between the monomer and liquid solutions without causing coalescence, agglomeration and breakup of the monomer droplets and to stabilize by partial polymerization of the droplets at 50-60° C. The monomer droplets flow out horizontally into a polymerization reactor and get polymerized in the polymerization reactor under agitation at 80-85° C. The polymer beads are dried at 80-100° C. and sieved.

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