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1. WO1997025461 - FIBERS FLASH-SPUN FROM BLENDS OF POLYOLEFIN POLYMERS

Publication Number WO/1997/025461
Publication Date 17.07.1997
International Application No. PCT/US1997/000161
International Filing Date 09.01.1997
Chapter 2 Demand Filed 30.07.1997
IPC
D01D 5/11 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
5Formation of filaments, threads, or the like
11Flash-spinning
D01F 6/32 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof
28from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
32comprising halogenated hydrocarbons as the major constituent
D01F 6/46 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof
44from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
46of polyolefins
D01F 6/52 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof
44from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
52of polymers of unsaturated carboxylic acids or unsaturated esters
D01F 6/90 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof
88from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
90of polyamides
D01F 6/92 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof
88from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
92of polyesters
CPC
D01D 5/11
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
5Formation of filaments, threads, or the like
11Flash-spinning
D01F 6/32
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
28from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
32comprising halogenated hydrocarbons as the major constituent
D01F 6/46
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
44from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
46of polyolefins
D01F 6/52
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
44from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
52of polymers of unsaturated carboxylic acids or unsaturated esters
D01F 6/90
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
88from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
90of polyamides
D01F 6/92
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
88from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
92of polyesters
Applicants
  • E.I. DU PONT DE NEMOURS AND COMPANY [US]/[US] (AllExceptUS)
  • SHIN, Hyunkook [US]/[US] (UsOnly)
  • WAGGONER, James, Ross [US]/[US] (UsOnly)
  • SAMUELS, Sam, Louis [US]/[US] (UsOnly)
  • BRYNER, Michael, Allen [US]/[US] (UsOnly)
  • JANIS, Rudolph, Francis [US]/[US] (UsOnly)
Inventors
  • SHIN, Hyunkook
  • WAGGONER, James, Ross
  • SAMUELS, Sam, Louis
  • BRYNER, Michael, Allen
  • JANIS, Rudolph, Francis
Agents
  • GORMAN, Thomas, W.
Priority Data
60/009,73911.01.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FIBERS FLASH-SPUN FROM BLENDS OF POLYOLEFIN POLYMERS
(FR) FIBRES OBTENUES PAR FLASH-SPINNING A PARTIR DE MELANGES DE POLYMERES DE POLYOLEFINES
Abstract
(EN)
A plexifilamentary strand of film-fibrils having a tensile strength of at least 1 gpd and a surface area, measured by the BET nitrogen adsorption method, greater than 2 m2/g. The film-fibrils are comprised of at least 20 % by weight of polyethylene and polypropylene, wherein the polyethylene and polypropylene each comprise at least 5 % by weight of each of the film-fibrils. A process for the production of such a strand is also provided that includes the steps of forming a spin solution of polyethylene and polypropylene polymers in a solvent and spinning the spin solution at a pressure that is greater than the autogenous pressure of the spin solution into a region of substantially lower pressure and at a temperature at least 50 °C higher than the atmospheric boiling point of the solvent.
(FR)
La présente invention concerne un brin de fibres plexiformes fibrillées ayant une résistance à la traction d'au moins 1 gpd et une aire, mesurée selon le procédé d'adsorption d'azote BET, supérieure à 2 m2/g. Les fibres fibrillées sont constituées par au moins 20 % en poids de polyéthylène et de polypropylène, chacun représentant au moins 5 % en poids de chacune des fibres fibrillées. L'invention concerne aussi un procédé de production d'un tel brin, procédé qui comprend la formation d'une solution de filage de polymères de polyéthylène et de polypropylène dans un solvant et le filage de la solution, à une pression supérieure à la pression autogène de la solution de filage, vers une plage de pression sensiblement inférieure et à une température supérieure d'au moins 50 degrés C au point d'ébullition du solvant à la pression atmosphérique.
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