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:
Jul. 05, 2016
Filed:
Sep. 23, 2013
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 polymerising the monomer or monomers and transferring the polymerising monomer or mixture of monomers from the inlet to an outlet () of the first reactor device () to provide a partially polymerised product; iii) flowing the partially polymerised product out of the outlet (), in which no more than 60% of the monomer or mixture of monomers has been polymerised in the partially polymerised 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 polymerisation in the further reactor device () and removing the polymer product from the outlet () of the further reactor device (), characterised in that the first reactor device () comprises a positive displacement pump.