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:
Mar. 29, 2005
Filed:
May. 05, 2000
Franck Bouquerel, F-69003, Lyons, FR;
Jean-francois Sassi, F-69390 Millery, FR;
Franck Bouquerel, F-69003, Lyons, FR;
Jean-Francois Sassi, F-69390 Millery, FR;
Other;
Abstract
The invention relates to hyperbranched copolyamides (HBPAs), to their production and to their use as additives, in particular as melt viscosity modifiers in thermoplastic polymer compositions. This copolyamide is obtained by a reaction between a monomer (I): A—R—B One of the species R or R' of (I) or (II) is aliphatic, cycloaliphatic or arylaliphatic. For example: A=NHand B=COOH or A=COOH and B=NHwith F=2. A′=NHand B′=COOH or A′=COOH and B′=NH. A—R—B, e.g.: 5-aminoisophthalic acid or 3,5-diaminobenzoic acid and A′—R′—B′=ε-caprolactam. The yarns, fibres, films and moulded parts obtained using polymer compositions (e.g. PA) to which are added HBPA according to the invention are also included in this invention.