US3907633A - Process of making polyolefin fibers - Google Patents

Process of making polyolefin fibers Download PDF

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Publication number
US3907633A
US3907633A US353859A US47903874A US3907633A US 3907633 A US3907633 A US 3907633A US 353859 A US353859 A US 353859A US 47903874 A US47903874 A US 47903874A US 3907633 A US3907633 A US 3907633A
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United States
Prior art keywords
fibers
refining
fibrous product
polymer
cellulose xanthate
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Expired - Lifetime
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US353859A
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English (en)
Inventor
Hayato Yonemori
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Fort James Corp
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Crown Zellerbach Corp
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/1254—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of fibres which have been treated to improve their dispersion in the paper-making furnish
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums

Definitions

  • the present invention relates to a method for producing non-woven fabrics or paper-like materials having excellent properties by a wet method from fibers of unregenerated cellulose xanthate or hydroxymethyl cellulose xanthate.
  • Unregenerated cellulose xanthate and hydroxymethyl cellulose xanthate are methylolation products of cellulose xanthate. Their fibers are strongly acidic and stable, but are characterized by quite high chemical reactivity. Fibers comprising unregenerated cellulose xanthate and a method for producing nonwoven fabrics or paper-like materials from the fibers are disclosed in U.S. Patent 3,320,117 and fibers comprising hydroxymethyl cellulose and a method for producing non-woven fabrics or paper-like materials from the fibers are disclosed in US. Patent 3,718,537 and U.S. Patent application Serial No. 267,994, filed June 30, 1972 (corresponding tov Italian Patent 962,732). g
  • fibers which .can be used in preparing non-woven fabrics or paper like materials, comprising unregenerated cellulose xanthate, or hydroxymethyl cellulose xanthate are provided.
  • the fibers are treated with a betaine surface active agent, and particularly those having the chemical structure of alkyldimethylbetaine or alkyldihydroxyethylbetaine.
  • betaines have the structure T GnH lil CHQOO (IIH CH OH '.CnH CH' COO G) (b) CH CH OH wherein n is an integer of 12-18.
  • betaine surfactants have relatively good water-solubility and stability in acidic,neutral and alkaline media andare especially stable in acidic and alkaline media.
  • the surfactant is advantageously cationized by acidification with acetic acid, lactic acid, or the like, whereby the adsorbability of the surface active agents on the fibers will be increased and an extremely good dispersion effect will be obtained.
  • the starting fibers used in the present invention are incompletely regenerated viscosefibers as used, for example, in U.S. Patent No. 3,320,117 of those comprising a derivative of cellulose xanthate, such as hydroxymethyl cellulose xanthate as'used, for example, in U.S. Patent No. 3,718,537 and U.S. Serial No. 267,994.
  • These fibers are usually cut into lengths of about 440 mm while wet and are used for the conventional paper-making as disclosed in said patents.
  • the starting fibers may be dipped into a liquid containing the above surfactant under acidic conditions or said liquid may be sprayed or applied onto the fibers under acidic conditions at the spinning step or at any of the stretching and the subsequent steps.
  • spontaneous dispersi bility is imparted to the fibers and the thus treated fibers can then be dispersed into an acidic aqueous solution and used in a wet process technique for the formation of a paper-like product.
  • the starting fibers may also be directly dispersed into an acidic aqueous solution which contains the surfactant, andthe dispersion may be subjected to paper-making.
  • the preferred concentration of the aqueous solution of the surfactant used for dispersion is -100 ppm, although higher concentrations may also be employed, if desired.
  • the preferred amount of the surfactant to be used is 0.05 to 1.5% based on the weight of the fibers.
  • dispersion stabiliz-' ing agents may, of course, be used in the dispersion EXAMPLE 1
  • a aqueous solution of lactic acid-acidified stearyldimethylbetaine (Product A) was diluted with hot water containing 1% acetic acid at 80C to prepare a 4% aqueous solution having a pH of 3.0.
  • a viscose containing 7.5% cellulose and 4% alkali and having a 7 value of 55 was prepared in the usual manner. This viscose was extruded into a coagulation bath containing 25 g/l of sulfuric acid, 0.5 g/l of zinc sulfate and 40 g/l of sodium sulfate at 23C. The resultant filamenttow was stretched by 150% in a bath containing 2 g/l of sulfuric acid, and 300 ppm (0.3% based on the weight of fibers) of product A at 20C and was cut'into lengths of 15 mm.
  • the resultant cut filament tow were dispersed in 7 an aqueous solution containing 20 ppm of product A step and the generally employed conditions for dispersion and paper-making may be used without any difficulty.
  • non-woven fabrics or paper-like materials I are produced by (a) dispersing spun and stretched viscose fibers comprising hydroxymethyl cellulose xanthate in an aqueous medium having a pH of lower than 6.0 at a temperature of lower than 30C,
  • EXAMPLE 2 A 50% aqueous solution of lactic acid-acidified stearyldihydroxyethylbetaine (Product B) containing sodium chloride was diluted with hot water containing 1% acetic acid at 80C to prepare a 5% aqueous solution having a pH of 3.0.
  • a viscose containing 7% cellulose and 4.2% alkali and having a y value of 80 was prepared in accordance with the conventional method. This viscose was extruded into a coagulation bath containing 35 g/l of sulfuric acid, 8 g/l of formaldehyde and 80 g/l of sodium sulfate at 26C. The thus obtained filaments were stretched by 150% in a second bath containing 10 g/l of sulfuric acid at 60C to obtain -a filament fiber tow.
  • This tow was continuously cut to lengths of mm and at the same time, the thus cut fibers were continuously introduced and dispersed in an aqueous solution containing 70 ppm (0.15% based on the weight of fibers) of product B and having a pH of 3.5 to obtain an extremely homogeneous dispersion.
  • This dispersion was immediately subjected to papermaking by employing a cylindrical paper machine to obtain a sheet of homogeneous texture.
  • the thus obtained sheet was passed through an embossing roll having a surface temperature of 130Cto cause partial fusion bonding and then was subjected to scouring treatments, such as hot acid treatment at 80C,
  • a non-woven fabric or a paper-like material by cutting fibers comprising unregenerated cellulose xanthate or cellulose xanthate derivative, dispersing the cut fibers in an acidic aqueous medium and then forming the dispersed fibers into a sheet, the improvement which comprises: treating said fibers under acidic conditions with a surfactant having the following structure:
  • n is aninteger of 12-18, which surfactant is cationized by acidification, so as to impart good selfdispersibility to said fibers.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
US353859A 1973-06-18 1974-06-13 Process of making polyolefin fibers Expired - Lifetime US3907633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48068505A JPS5014869A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-06-18 1973-06-18

Publications (1)

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US3907633A true US3907633A (en) 1975-09-23

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US (1) US3907633A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5014869A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403530A (en) * 1991-02-15 1995-04-04 Courtaulds Plc Elongate member production method
US6361651B1 (en) 1998-12-30 2002-03-26 Kimberly-Clark Worldwide, Inc. Chemically modified pulp fiber
CN107999508A (zh) * 2017-11-07 2018-05-08 宜宾丝丽雅股份有限公司 一种粘胶废渣处理方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789903A (en) * 1954-09-02 1957-04-23 Celanese Corp Process for production of shaped articles comprising fibrous particles and a copolymer of vinyl acetate and an ethylenically unsaturated acid
US3402231A (en) * 1964-05-21 1968-09-17 Monsanto Co Process for preparing synthetic fibers for paper products
US3743570A (en) * 1971-03-03 1973-07-03 Crown Zellerbach Corp Process for producing a nonwoven fabric web from a suspension of polyolefin fibers and a hydrophilic colloidal polymeric additive
US3743272A (en) * 1971-04-12 1973-07-03 Crown Zellerbach Corp Process of forming polyolefin fibers
US3770856A (en) * 1970-09-08 1973-11-06 Oji Yuka Goseishi Kk Production of fine fibrous structures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789903A (en) * 1954-09-02 1957-04-23 Celanese Corp Process for production of shaped articles comprising fibrous particles and a copolymer of vinyl acetate and an ethylenically unsaturated acid
US3402231A (en) * 1964-05-21 1968-09-17 Monsanto Co Process for preparing synthetic fibers for paper products
US3770856A (en) * 1970-09-08 1973-11-06 Oji Yuka Goseishi Kk Production of fine fibrous structures
US3743570A (en) * 1971-03-03 1973-07-03 Crown Zellerbach Corp Process for producing a nonwoven fabric web from a suspension of polyolefin fibers and a hydrophilic colloidal polymeric additive
US3743272A (en) * 1971-04-12 1973-07-03 Crown Zellerbach Corp Process of forming polyolefin fibers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403530A (en) * 1991-02-15 1995-04-04 Courtaulds Plc Elongate member production method
US6361651B1 (en) 1998-12-30 2002-03-26 Kimberly-Clark Worldwide, Inc. Chemically modified pulp fiber
CN107999508A (zh) * 2017-11-07 2018-05-08 宜宾丝丽雅股份有限公司 一种粘胶废渣处理方法

Also Published As

Publication number Publication date
JPS5014869A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-02-17

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