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. 02, 1986
Filed:
Dec. 19, 1983
Kohichi Iohara, Ibaraki, JP;
Michikage Matsui, Ibaraki, JP;
Teijin Limited, Osaka, JP;
Abstract
An undrawn polyester yarn comprising 0.2 to 10% by weight of a polymer having a recurring unit structure represented by the following formula (1): ##STR1## wherein R.sub.1 and R.sub.2 stand for substituents consisting of optional atoms selected from C, H, N, O, S, P and halogen atoms, with the proviso that the sum of the molecular weights of R.sub.1 and R.sub.2 is equal to or more than 40, and n is a positive integer, and having a molecular weight equal to or more than 1000, the elongation increase ratio (I) of the undrawn polyester yarn, represented by the following formula (2), being equal to or more than 8%: ##EQU1## wherein EL.sub.b stands for the residual elongation (%) of the undrawn yarn and EL.sub.o stands for the residual elongation (%) of a corresponding undrawn polyester yarn substantially free of the polymer represented by the formula (1).