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:
Jun. 27, 2000
Filed:
Nov. 18, 1998
Applicant:
Inventors:
Peter Claassen, Ludwigshafen, DE;
Gerhard Blatz, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
523335 ;
Abstract
In a process for preparing coarse polymer dispersions Pg where a mixture M comprising at least one conjugated diene monomer A and at least one ethylenically unsaturated comonomer B is polymerized by free-radical aqueous emulsion polymerization in the presence of an emulsifier E and with or without further additives to form a fine polymer dispersion Pf and said fine polymer dispersion Pf is agglomerated to form a coarse such dispersion Pg, the agglomeration is carried out using a combination of chemical agglomeration and pressure agglomeration; the invention also relates to such coarse polymer dispersions and their use.