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:
May. 21, 2013
Filed:
Jul. 19, 2005
Andreas Eipper, Ludwigshafen, DE;
Bernd Bruchmann, Freinsheim, DE;
Carsten Weiβ, Ludwigshafen, DE;
Jean-francois Stumbe, Strasbourg, FR;
Michael Geprägs, Schwarzheide, DE;
Andreas Eipper, Ludwigshafen, DE;
Bernd Bruchmann, Freinsheim, DE;
Carsten Weiβ, Ludwigshafen, DE;
Jean-Francois Stumbe, Strasbourg, FR;
Michael Geprägs, Schwarzheide, DE;
BASF SE, , DE;
Abstract
Continuous process for preparation of polyalkylene arylates A) comprising highly branched or hyperbranched polymers B) and, if appropriate, comprising lubricants C), by esterifying or transesterifying an aromatic dicarboxylic acid or its ester or ester-forming derivatives, with a molar excess of an aliphatic dihydroxy compound, and polycondensing the resultant transesterification or esterification product, which comprises, on achievement of at least 80% of the desired viscosity number, adding component B) and also, if appropriate, C) to the polymer melt, and, if appropriate, post-condensing the melt and then discharging, cooling, and pelletizing it, and also using, as component B), at least one highly branched or hyperbranched polycarbonate B1) with an OH number of from 1 to 600 mg KOH/g of polycarbonate (to DIN 53240, Part 2), or at least one highly branched or hyperbranched polyester B2) of ABtype, where x is at least 1.1 and y is at least 2.1, or a mixture of these.