Undrawn polyester yarn and process for manufacturing
Abstract
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 1 and R 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 1 and R 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 b stands for the residual elongation (%) of the undrawn yarn and EL o stands for the residual elongation (%) of a corresponding undrawn polyester yarn substantially free of the polymer represented by the formula (1).
Inventors
- 👤 Kohichi Iohara
- 👤 Michikage Matsui
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
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