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:
Jun. 14, 2011
Filed:
Nov. 23, 2005
Corinne Bushelman, Cumming, GA (US);
James K. Doty, Alpharetta, GA (US);
Jean DE Canniere, Brussels, BE;
Johan Billiet, Ghent, BE;
Corinne Bushelman, Cumming, GA (US);
James K. Doty, Alpharetta, GA (US);
Jean De Canniere, Brussels, BE;
Johan Billiet, Ghent, BE;
Solvay Advanced Polymers, L.L.C., Alpharetta, GA (US);
Abstract
Multilayer Polymer Structure Multilayer structure comprising at least one couple (L1-L2) of adjacent layers (L1) and (L2), wherein layer (L1) comprises at least one polymer composition (C1) comprising a grafted fluoropolymer material (M1) consisting of N1 grafted fluoropolymer(s) (P1), said polymer(s) (P1) obtained by a process comprising grafting onto an ungrafted fluoropolymer (U1) at least one grafting agent (G1) chosen from ethylenically unsaturated carboxy acids, their esters, their anhydrides and their salts, layer (L2) comprises at least one polymer composition (C2) comprising at least one impact modifier (I2) and a semi-crystalline aromatic polyamide material (M2) consisting of N2 semi-crystalline aromatic polyamide polymer(s) (P2), and the average melting temperature (T) of material (M1) differs by at most 45° C. from the average melting temperature (T) of material (M2), Nbeing the number of polymer(s) (Pj) of material (Mj), Nj>1, Tbeing equal to formula (T) wbeing the weight amount of the ipolymer (Pj) of material (Mj), Tbeing the melting temperature of the ipolymer (Pj) of material (Mj), Wbeing the total weight amount of material (Mj), for j=1 and for j=2. Process for manufacturing the above multilayer structure, which comprises co-extruding polymer compositions (C1) and (C2), so as to obtain couple (L1-L2) of adjacent layers (T1) and (T2). Shaped article comprising the above multilayer structure, and process for manufacturing it.