Hollow water-absorbing polyester filament textile material
US4391872A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1982 |
| Grant date | Jul 5, 1983 |
| Priority date | — |
| Expiry date | Jun 11, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/425
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Hollow water-absorbing polyester filaments each having a number of fine caves which are evenly distributed in at least a portion of the filament and through which the hollow is connected to the outside of the filament, are produced (1) by prepared hollow filaments from a blend of a principal polyester component and a cave-forming agent consisting of at least one member selected from: PA0 (i) copolyesters containing an additional divalent organic sulfonic acid compound moiety of the formula (II): ##STR1## wherein Z is a trivalent aromatic or aliphatic hydrocarbon radical, M.sup.1 is H or metal atom, R.sup.1 is an ester-forming organic radical and R.sup.2 is an H atom or ester-forming organic radical; PA0 (ii) phosphorus compounds of the formula (III): ##STR2## wherein R.sup.3 is a monovalent organic radical, X is --OR.sup.4, wherein R.sup.4 is an H atom or a monovalent organic radical, --OM.sup.3, wherein M.sup.3 is a metal atom, or a monovalent organic radical, M.sup.2 is a metal atom and m=0 or 1, and; PA0 (iii) aromatic carboxy-sulfonic acid compounds of the formula (IV): ##STR3## wherein Y is an H atom or ester-forming organic radical, M.sup.4 and M.sup.5 each are a metal atom, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.