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. 24, 2009
Filed:
Dec. 16, 2002
Joël Varlet, Dardilly, FR;
Florence Clement, Lyons, FR;
Franck Touraud, Vernon, FR;
Sandrine Rochat, Villeurbanne, FR;
Natalia Scherbakoff, Vourles, FR;
Joël Varlet, Dardilly, FR;
Florence Clement, Lyons, FR;
Franck Touraud, Vernon, FR;
Sandrine Rochat, Villeurbanne, FR;
Natalia Scherbakoff, Vourles, FR;
Rhodianyl, Boulogne Billancourt Cedex, FR;
Abstract
The invention relates to thermoplastic compositions comprising a polymer matrix and an additive which modifies the rheological behavior of the matrix in the molten state. The purpose of the invention is to provide a preferably non-reactive additive which can be dispersed in the matrix and which can be used to obtain a good compromise in terms of rheological properties/mechanical properties. According to the invention, the additive is a hyperbranched polymer which is functionalized by R<2> radicals, R<2> being a radical of the following type: substituted or non-substituted hydrocarbon, of the silicon type, linear or branched alkyl, aromatic, arylalkyl, alkylaryl or cycloaliphatic, which can comprise one or more unsaturations and/or one or more heteroatoms. Preferably, the composition does not contain hyperbranched polymers which produce therein a reduction in the molar mass of matrix M which is greater than or equal to 7% in relation to a sample composition which comprises matrix M but which does not contain hyperbranched polymer additive(s). Said mass measurement is taken preferably using a predetermined protocol P. The invention is suitable for molding, extrusion, engineered plastics, wires and fibers.