Block polyesters useful as soil release agents in detergent compositions are disclosed. Preferred polyesters have the formula: ##STR1## wherein each R 1 is a 1,4-phenylene moiety; the R 2 consist essentially of ethylene moieties, 1,2-propylene moieties or a mixture thereof; each X is ethyl or preferably methyl; each n is from about 12 to about 43; u is from about 3 to about 10.

Block polyesters and like compounds useful as soil release agents in detergent compositions

The present invention provides a splittable conjugate fiber containing at least two incompatible polymers that are arranged in distinct segments across the cross section of the fiber, wherein the segments are continuous along the length of the fiber. The fiber can be characterized in that the segments of the fiber dissociate in less than about 30 seconds when contacted with a hot aqueous fibrillation-inducing medium. The invention also provides a fabric containing the split fibers produced from the precursor splittable conjugate fiber and laminates containing the split fiber fabric. Additionally provided is a process for producing the split fibers.

Fine denier fibers and fabrics made therefrom

This invention relates to aliphatic-aromatic copolyesters, as well as blends of cellulose esters and/or aliphatic polyesters and aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, nonwovens, molded objects, and films prepared therefrom.

Copolyesters and fibrous materials formed therefrom

This article reviews the preparation, development and characteristics of conductive polymer-based electro-conductive textile composites for electromagnetic interference shielding. Modification of o...

Conductive polymer-based electro-conductive textile composites for electromagnetic interference shielding: A review:

Coaxial and twisted pair conductive yarn structures reduce signal crosstalk between adjacent lines in woven electrical networks. A coaxial conductive yarn structure includes an inner conductive yarn having a plurality of conductive strands twisted together. An outer conductive yarn is wrapped around the inner conductive yarn. An insulating layer separates the inner and outer yarns. A twisted pair conductive yarn structure includes first and second conductive yarns, each including a plurality of conductive strands being twisted together. The first and second conductive yarns are twisted together to form a helical structure. In a woven electrical network, at least one conductor of adjacent conductive yarn structures is connected to ground to reduce signal crosstalk. Coaxial and twisted pair yarn structures may also be formed simultaneously with weaving or knitting the threads that make up the structures into a fabric.

Fabric and yarn structures for improving signal integrity in fabric-based electrical circuits

An electrically conductive fiber having an electric resistivity of 1x10 12 ohm/cm or less under a D.C. voltage of 1 K.V., containing copper (I) iodide and a method for producing this fiber by depositing copper (I) iodide in the inside of at ieastthe peripheral surface layer of an electrically non-conductivefiber matrix by contacting iodine with copper (I) ions therein.

Electrically conductive fiber and method for producing the same

PURPOSE: A polyester composition having improved antistatic, physical, and fiber making properties, comprising specific amounts of (A) polyoxyethylene glycol substantially soluble in a polyester and (B) a specific metal alkylsulfonate, and (C) the polyester. COPYRIGHT: (C)1978,JPO&Japio

Antistatic polyester composition

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 preparing hollow filaments from a blend of a principal polyester component and a cave-forming agent consisting of at least one member selected from: (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 1 is H or metal atom, R 1 is an ester-forming organic radical and R 2 is an H atom or ester-forming organic radical; (ii) phosphorus compounds of the formula (III): ##STR2## wherein R 3 is a monovalent organic radical, X is --OR 4 , wherein R 4 is an H atom or a monovalent organic radical, --OM 3 , wherein M 3 is a metal atom, or a monovalent organic radical, M 2 is a metal atom and m=0 or 1, and; (iii) aromatic carboxy-sulfonic acid compounds of the formula (IV): ##STR3## wherein Y is an H atom or ester-forming organic radical, M 4 and M 5 each are a metal atom, respectively, and n=1 or 2, and (2) by removing the at least a portion of cave-forming agent and a portion of the principal polyester component from the resultant hollow filaments so as to form numerous concaves on the peripheral and hollow surfaces, numerous pores in the body of the filament, and numerous channels through which the pores are connected to each other and to the concaves, the concaves and pores having a longitudinal size of 50 times or less the lateral size thereof, which is 0.01 to 3 microns.

Hollow water-absorbing polyester filaments and a process for producing the same

PURPOSE: A specific compound is added to polyester and they are melt spun into hollow fibers, then the fibers are subjected to leaching treatment to form fine pores coming through to the hollow part, thus producing fibers with high water adsorption and moisture adsorption CONSTITUTION: When (a) difunctional carboxylic acids mainly consisting of terephthalic acid or their ester-forming derivatives are made to react with (b) 2W6C alkylene glycols or their ester-forming derivatives and the resultant polymer is melt spun into hollow fibers, a phosphorus compound and/or a sulfonic acid of formula I and II [R is monofunctional organic group; X is -OH, -OR', -OM 4 (R' is monofunctional organic group; M 4 is metal) or monofunctional organic group; Y is H, ester-forming group; M 1 , M 2 , M 3 are metal; m=0, 1; n=1, 2] are added to the polymer in any stage until the melt spinning ends by 03W15mol% based on the component (a) Then, the fibers are treated with an aqueous alkali solution to leach out 2W50wt% of the hollow fibers COPYRIGHT: (C)1982,JPO&Japio

Production of hollow fiber

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: (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, M1 is H or metal atom, R1 is an ester-forming organic radical and R2 is an H atom or ester-forming organic radical; (ii) phosphorus compounds of the formula (III): ##STR2## wherein R3 is a monovalent organic radical, X is --OR4, wherein R4 is an H atom or a monovalent organic radical, --OM3, wherein M3 is a metal atom, or a monovalent organic radical, M2 is a metal atom and m=0 or 1, and; (iii) aromatic carboxy-sulfonic acid compounds of the formula (IV): ##STR3## wherein Y is an H atom or ester-forming organic radical, M4 and M5 each are a metal atom, respectively, and n=1 or 2, and (2) by removing the at least a portion of cave-forming agent and a portion of the principal polyester component from the resultant hollow filaments so as to form numerous concaves on the peripheral and hollow surfaces, numerous pores in the body of the filament, and numerous channels through which the pores are connected to each other and to the concaves, the concaves and pores having a longitudinal size of 50 times or less the lateral size thereof, which is 0.01 to 3 microns.

Kiyokazu Tsunawaki

Papers

Electrically conductive fiber and method for producing the same

Antistatic polyester composition

Hollow water-absorbing polyester filaments and a process for producing the same

Production of hollow fiber

Hollow water-absorbing polyester filament textile material