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:
Sep. 26, 1978
Filed:
Jul. 21, 1976
Gerard Barbe, Craponne, FR;
Robert Habault, Lyons, FR;
Rhone-Poulenc-Textile, Paris, FR;
Abstract
Side-by-side bicomponent polyester filaments, and process for making same, are disclosed, wherein the filaments are of polyethylene terephthalate and polybutylene terephthalate, with the polybutylene terephthalate being sparingly cross-linked by at least about 0.20 mole per cent of cross-linking agent. The sparingly cross-linked polybutylene terephthalate has a melted state viscosity VF of at least about 2000 poises at 260.degree. C. The polyethylene terephthalate partly envelopes the sparingly cross-linked polybutylene terephthalate, in cross-section, so as to cover at least about 45% of the periphery of the sparingly cross-linked polybutylene terephthalate.