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:
Oct. 29, 1991
Filed:
Jul. 21, 1989
Shigeki Katayama, Yokohama, JP;
Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
A yarn article comprising a tetrafluoroethylene polymer is disclosed which has a specific bulk density, a specific orientation degree in an axial direction and a specific crystallinity and exhibits specific peaks in the thermogram of differential scanning calorimetry. The yarn article has excellent tensile strength at break and excellent tensile modulus of elasticity as well as inertness to chemicals. Therefore, the yarn article of the present invention can advantageously be used as a material for producing a woven fabric, a knit, a rope and the like, particularly in the field where not only chemical resistance but also high tensile strength and high tensile modulus of elasticity are required.