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:
Aug. 23, 2011
Filed:
Nov. 09, 2007
Fernanda Oliveira Vieira Da Cunha, Porto Alegre, Rio Grande do Sul, BR;
Alan Kardec DO Nascimento, Salvador, Bahia, BR;
Breno DE LA Rue, Americana-SP, BR;
Martha DE LA Rue Beckerdorf, Vila Jones-Americana-São Paulo, BR;
Fernanda Oliveira Vieira Da Cunha, Porto Alegre, Rio Grande do Sul, BR;
Alan Kardec do Nascimento, Salvador, Bahia, BR;
Breno de La Rue, Americana-SP, BR;
Martha De La Rue Beckerdorf, Vila Jones-Americana-São Paulo, BR;
Braskem S.A., Camacari, BR;
Profil Ind E Com de Fios Ltda., Sao Paulo, BR;
Abstract
A process for the preparation of polymer yarns from ultra high molecular weight homopolymers or copolymers which includes the steps of preparing a suspension of a homopolymer or copolymer and a spinning or gelling solvent, extruding the suspension with the formation of a gel, spinning the gel to obtain non-stretched filaments or yarns, cooling the non-stretched filaments or yarns, feeding the non-stretched filaments or yarns, to an extractor together with the feed of an organic extraction solvent, extracting the non-polar long chain solvent impregnated in the yarns, drying the non-stretched filament bundles or yarns, and stretching said dry yarns at a temperature in excess of 80° C.