GB882178A - Melt spinning of polyolefines - Google Patents

Melt spinning of polyolefines

Info

Publication number
GB882178A
GB882178A GB1830758A GB1830758A GB882178A GB 882178 A GB882178 A GB 882178A GB 1830758 A GB1830758 A GB 1830758A GB 1830758 A GB1830758 A GB 1830758A GB 882178 A GB882178 A GB 882178A
Authority
GB
United Kingdom
Prior art keywords
melt index
polymer
melt
range
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1830758A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB882178A publication Critical patent/GB882178A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/228—Stretching in two or more steps, with or without intermediate steps
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/30—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising olefins as the major constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

882,178. Melt-spinning polyolefines. UNION CARBIDE CORPORATION. June 9, 1958 [June 10, 1957(2)], No. 18305/58. Drawings to Specification. Classes 2(2) and 2(6) A substantially normally crystalline polyolefine resin having a melt index of at least 1À0, when determined as described in ASTM Test Method D-1236-52T, is melt-spun to form continuous filaments which are stretched so that their length is increased by at least 200% at a temperature of at least 100‹C. and not higher than 5‹C. below the melting point of the resin. The polyolefine may initially have had a melt index in the range 0.001 to below 1À0, and may have had its melt index raised to fall within the range 1À0 to 200 by heating it under controlled conditions of time and temperature such that it undergoes pyrolysis to a degree sufficient to raise the melt index by the required amount without extensive molecular degradation of the polymer. The depolymerization of the polymer. is effected as far as possible in such a manner that only the higher molecular weight components of the polymer are depolymerized, the range of molecular weights of the components of the polymer thus being narrowed. The preferred ranges of melt index are 3À0-15, 2À0-50 and 5-20 for polyethylene, polypropylene and a mixture of 80 mole per cent 3-methyl-l-butene and 20 mole per cent 4-methyl-l-pentene respectively. The pyrolysis step may be combined with the spinning operation, cooling and remelting of the pyrolyzed polymer thus being avoided. Pyrolysis temperatures and corresponding times may be within the range 325-450‹C. and 600-10 seconds. The polyolefines include those prepared from branched and unbranched aliphatic α, #-unsaturated olefine monomers containing 2-20, and preferably 2-12, carbon atoms. In the case of branched monomers, the branch chain must be positioned at least 1 and preferably 2 carbon atoms removed from the nearest ethylenically unsaturated carbon atom. In an example, a polyethylene resin having a melt index of 0À18 is pyrolyzed in a mill at 397 ‹C. to increase its melt index to 9À5 and is melt-spun at 200‹C. to form filaments, which are solidified by a concurrent flow of air at room temperature and then wound on to a bobbin. The yarn is then passed through a tube supplied with steam at 2 atmospheres absolute pressure corresponding with a temperature of 121 ‹C., and stretched so that its length is increased by 890%. Specification 823,309 is referred to.
GB1830758A 1957-06-10 1958-06-09 Melt spinning of polyolefines Expired GB882178A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66474757A 1957-06-10 1957-06-10
US66536857A 1957-06-10 1957-06-10

Publications (1)

Publication Number Publication Date
GB882178A true GB882178A (en) 1961-11-15

Family

ID=27099045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1830758A Expired GB882178A (en) 1957-06-10 1958-06-09 Melt spinning of polyolefines

Country Status (3)

Country Link
DE (1) DE1410469A1 (en)
FR (1) FR1209985A (en)
GB (1) GB882178A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432590A (en) * 1963-07-10 1969-03-11 Nat Plastic Products Co Inc Process for spinning elastic polypropylene fibers
US3686385A (en) * 1971-02-05 1972-08-22 Mobil Oil Corp Formation of elastic and high-tenacity fibers from butene-1 homopolymers and copolymers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1109448A (en) * 1965-02-02 1968-04-10 Ici Ltd Process for the production of ropes and cordage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432590A (en) * 1963-07-10 1969-03-11 Nat Plastic Products Co Inc Process for spinning elastic polypropylene fibers
US3686385A (en) * 1971-02-05 1972-08-22 Mobil Oil Corp Formation of elastic and high-tenacity fibers from butene-1 homopolymers and copolymers

Also Published As

Publication number Publication date
DE1410469A1 (en) 1968-10-31
FR1209985A (en) 1960-03-04

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