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. 15, 2017
Filed:
Mar. 04, 2016
Basf SE, Ludwigshafen, DE;
Shankara Narayanan Keelapandal Ramamoorthy, Limburgerhof, DE;
Oliver Soetje, Mannheim, DE;
John Scott Barratt, Mirfield, GB;
Gabriela Eugenia Fonseca Zepeda, Mannheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device () through at least one inlet; ii) partially polymerizing the monomer or monomers and transferring the polymerizing monomer or mixture of monomers from the inlet to an outlet () of the first reactor device () to provide a partially polymerized product; iii) flowing the partially polymerized product out of the outlet (), in which no more than 60% of the monomer or mixture of monomers has been polymerized in the partially polymerized product as it exits the outlet () of first reactor device (), and transferring it to a further reactor device (), in which the further reactor device () has an inlet and an outlet ();iv) continuing the polymerization in the further reactor device () and removing the polymer product from the outlet () of the further reactor device (),characterized in that the first reactor device () comprises a positive displacement pump.