US2650168A - Method for dispersing an immiscible pigment in viscose solution - Google Patents

Method for dispersing an immiscible pigment in viscose solution Download PDF

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Publication number
US2650168A
US2650168A US113622A US11362249A US2650168A US 2650168 A US2650168 A US 2650168A US 113622 A US113622 A US 113622A US 11362249 A US11362249 A US 11362249A US 2650168 A US2650168 A US 2650168A
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US
United States
Prior art keywords
mixture
zone
viscose
pigment
ring main
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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 - Lifetime
Application number
US113622A
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English (en)
Inventor
Pieter Van Dijk
Schrenk Hans Alwin
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Akzona Inc
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American Enka Corp
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Publication date
Application filed by American Enka Corp filed Critical American Enka Corp
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Publication of US2650168A publication Critical patent/US2650168A/en
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    • 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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/51—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is circulated through a set of tubes, e.g. with gradual introduction of a component into the circulating flow

Definitions

  • the present invention relates to a method for uniformly distributing an immiscible pigment in a viscous solution whereby the solution can be extruded to form filamentous threads, fibers, and the like having uniformly modified characteristics.
  • Another conventional method of mixing the substances with spinning solutions is to circulate the same through a pipe system and maintain the rate of circulation higher than the rate at which it is discharged so that a certain amount of the circulating mixture is always contacting a fresh supply of the solution containing the additive agent.
  • This circulation has a favorable influence on the distribution, it is not entirely satisfactory to produce a uniform suspension and thereby an end product of the desired characteristics.
  • the drawing is very schematic in view of the fact that the pipe lines, gear pumps, etc., are of the conventional type and it is their particular arrangement and co-action that comprise the present invention. Whereas the same system can be successfully employed for modifying the characteristics of various types of viscose solutions by adding the required immiscible substances, the description of the drawing will be confined to the preparation of a viscose-carbon black mixture for the production of so-called black, spun dyed viscose rayon yarn.
  • the numerals l, 2, 3, l and 5 indicate branch lines for conducting a viscose-carbon black mixture to a spinning machine (not shown) by means of spinning pumps 6, 7, 8, 9 and 10.
  • the branch lines are fed from a primary ring main H, and the circulation of the mixture is effected by means of a gear pump i2.
  • Fresh viscose containing no carbon black is conducted from a source, not shown, through a conduit 13 into the primary ring main H.
  • a concentrated suspension of carbon black in viscose is prepared in an auxiliary tank 14 from which the suspension passes through conduit i5 and is forced into the primary ring main by means of gear pump 16 at a point between the primary ring main circulating pump [2 and the junction of viscose conduit l3 and primary ring main H.
  • a secondary or auxiliary mixing ring main i1 is provided between the pump [2 and the branch lines I, 2, 3, 4 and 5.
  • Gear pump ill in the secondary ring main i1 forces the viscose in the direction shown by the arrows, viz., in a counter-clockwise direction, so that the flow through that portion of primary ring main 1 I, which overlaps or is common to both the primary and secondary ring, is in the opposite direction to the flow in the remainder of the primary ring main II. (For the direction of flow of the mixture, see the arrows in both the primary and secondary ring mains.)
  • the apparatus generally consists of a primary ring main provided with the proper connections for supplying the viscous liquid and the substances to be added, discharge lines to the spinning machine and a pump for circulating the mixture.
  • the apparatus is specifically characterized by at least one auxiliary or secondary ring main provided with a circulation pump and connected to the primary ring main.
  • the flow of the liquid in that part of the line which coincides with the primary ring main is opposite to the direction of fiow in the remaining part of the primary ring main. Furthermore, according to the process the rate of flow of the mixture to the spinning machine through the branch lines is lower than the rate of circulation through the primary ring main, and in turn the rate of circulation in the primary ring main is lower than the rate of circulation of the mixture in the auxiliary ring line.
  • the flow through the primary ring main should be at least twice as high as the quantity of spinning solution consumed by the spinning machine, and the flow through the auxiliary line should be at least four times as high as the quantity consumed by the spinning machine.
  • the point Where the pipes 13 and I5 come together and from that point downstream through the pump I2 may be regarded as an input zone for the material to be mixed. That material flows, as indicated by the arrows, through the pump [8 and straight through the point Q to a point of division P. From the point P some of the material goes to the discharge zone and the remainder is recycled through point Q all as indicated by arrows in the drawing.
  • the circulating pumps are preferably of the positive displacement type, such as a gear pump, other types of pumps may be employed for the same purpose.
  • this invention lends itself particularly well to such temperature control, for means can be provided for heating or cooling of the liquid in the secondary ring main, which is preferably constructed from small size piping. This, plus the circulation of the liquid at high velocities, is conducive to good heat exchange.
  • the invention is applicable to all types of processes in which immiscible substances are to be uniformly distributed through the body of spinning solutions such as viscose, cellulose acetate, casein, artificial resins, etc., and in wet as Well as in dry spinning.
  • pigments such as titanium dioxide, carbon black (particularly ga black), pigment-like organic nitrogen compounds for animalizing the solution
  • emulsifiable substances such as oils, for example, liquid paraffin, fats, fat and oil derivatives, artificial resins, particularly in the form of polymerisation or condensation products, natural resins, latex, soaps, etc.
  • oils for example, liquid paraffin, fats, fat and oil derivatives
  • artificial resins particularly in the form of polymerisation or condensation products
  • natural resins latex, soaps, etc.
  • the pre-mix can then be introduced into the sys- '4 tern herein disclosed by adding it to the auxiliary tank [4.
  • a process for uniformly dispersing an immiscible pigment in a viscose solution which comprises continuously introducing viscose and pigment into an input zone, continuously delivering the mixture from the input zone to a discharge zone, continuously withdrawing a portion of said viscose-pigment mixture from said discharge zone, continuously returning the remaining portion from said discharge zone to the input zone, and during the delivery of said mixture from said input zone to said discharge zone, increasing the homogeneity of said mixture by dividing the flow of mixture at a point downstream from the input zone and upstream from the discharge zone into two streams, and returning one of said streams to a point upstream from the point of division but downstream from the input zone.
  • a process for uniformly dispersing immiscible pigment in a viscose solution which comprises continuously introducing viscose and pigment into an input zone, continuously delivering the mixture from the input zone to a discharge zone, continuously withdrawing a portion of said viscose-pigment mixture from said discharge zone, continuously returning the remaining portion from said discharge zone to the input zone, and during the delivery of said mixture from said input zone to said discharge zone, increasin the homogeneity of said mixture by dividing the flow of mixture at a point downstream from the input zone and upstream from the discharge zone into two streams, and returning one of said streams to a point upstream from the point of division at a rate of flow greater than the rate of fiow of the mixture from the input zone to the discharge zone.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US113622A 1948-10-18 1949-09-01 Method for dispersing an immiscible pigment in viscose solution Expired - Lifetime US2650168A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL677081X 1948-10-18

Publications (1)

Publication Number Publication Date
US2650168A true US2650168A (en) 1953-08-25

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US113622A Expired - Lifetime US2650168A (en) 1948-10-18 1949-09-01 Method for dispersing an immiscible pigment in viscose solution

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US (1) US2650168A (en(2012))
BE (1) BE490951A (en(2012))
DE (1) DE825450C (en(2012))
GB (1) GB677081A (en(2012))
NL (1) NL65801C (en(2012))

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706689A (en) * 1951-11-02 1955-04-19 Ets Kuhlmann Method for the pigmentation of viscose
US2809090A (en) * 1953-08-18 1957-10-08 Lever Brothers Ltd Extruding protein solutions
US2815033A (en) * 1954-02-08 1957-12-03 American Viscose Corp Alternate flow control for fluid streams
US2822574A (en) * 1956-04-17 1958-02-11 American Viscose Corp Method and means for spinning a banded filament
US2835481A (en) * 1955-12-13 1958-05-20 Willis T Cox Method and apparatus for mixing and metering an unstable suspension of a solid in a liquid
US2839420A (en) * 1955-07-07 1958-06-17 Celanese Corp Pigmented yarn
US2838792A (en) * 1952-11-20 1958-06-17 Celanese Corp Production of filaments
US2875077A (en) * 1954-04-02 1959-02-24 Ind Rayon Corp Composition for and method of pigmenting viscose
US2929731A (en) * 1953-04-17 1960-03-22 American Enka Corp Process for mixing coloring material with viscose
US2934448A (en) * 1954-05-19 1960-04-26 American Enka Corp Spun dyed yarn
US2961223A (en) * 1957-04-25 1960-11-22 American Viscose Corp Additive injecting and blending apparatus for filament spinning
US2966390A (en) * 1955-08-08 1960-12-27 Bemberg Ag Process for the production of etched textile material containing synthetic cellulosefibers
US2972546A (en) * 1957-03-08 1961-02-21 Eastman Kodak Co Method and apparatus for manufacturing colored sheeting
US2993018A (en) * 1958-01-28 1961-07-18 Files De Calais Production of coloured filaments, threads and the like from viscose
US3023764A (en) * 1958-04-16 1962-03-06 American Viscose Corp Liquid blending system
US3133893A (en) * 1957-07-30 1964-05-19 American Cyanamid Co Pigment particles coated with polymer and method of preparing the same
US3249450A (en) * 1962-09-21 1966-05-03 Interchem Corp Coloring of regenerated cellulose
US3861931A (en) * 1972-07-20 1975-01-21 Fmc Corp Opaque cellophane for improved keeping
US20110040029A1 (en) * 2007-08-16 2011-02-17 Josef Glaser Mixture, especially spinning solution
US9415372B2 (en) 2010-02-18 2016-08-16 Helfenberger Immobilien Llc & Co Textilforschungs—Und Entwicklungs Kg Method for producing a fiber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111593487B (zh) * 2020-06-08 2022-11-08 上海映智研磨材料有限公司 一种熔喷布及加工该熔喷布的装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039708A (en) * 1932-10-22 1936-05-05 Eastman Kodak Co Coloring of cellulosic solutions
US2105684A (en) * 1937-03-13 1938-01-18 Manville Jenckes Corp Treatment of acid setting baths used in the manufacture of cellulose products from viscose
US2136201A (en) * 1935-09-13 1938-11-08 Celanese Corp Method of spinning artificial filaments

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039708A (en) * 1932-10-22 1936-05-05 Eastman Kodak Co Coloring of cellulosic solutions
US2136201A (en) * 1935-09-13 1938-11-08 Celanese Corp Method of spinning artificial filaments
US2105684A (en) * 1937-03-13 1938-01-18 Manville Jenckes Corp Treatment of acid setting baths used in the manufacture of cellulose products from viscose

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706689A (en) * 1951-11-02 1955-04-19 Ets Kuhlmann Method for the pigmentation of viscose
US2838792A (en) * 1952-11-20 1958-06-17 Celanese Corp Production of filaments
US2929731A (en) * 1953-04-17 1960-03-22 American Enka Corp Process for mixing coloring material with viscose
US2809090A (en) * 1953-08-18 1957-10-08 Lever Brothers Ltd Extruding protein solutions
US2815033A (en) * 1954-02-08 1957-12-03 American Viscose Corp Alternate flow control for fluid streams
US2875077A (en) * 1954-04-02 1959-02-24 Ind Rayon Corp Composition for and method of pigmenting viscose
US2934448A (en) * 1954-05-19 1960-04-26 American Enka Corp Spun dyed yarn
US2839420A (en) * 1955-07-07 1958-06-17 Celanese Corp Pigmented yarn
US2966390A (en) * 1955-08-08 1960-12-27 Bemberg Ag Process for the production of etched textile material containing synthetic cellulosefibers
US2835481A (en) * 1955-12-13 1958-05-20 Willis T Cox Method and apparatus for mixing and metering an unstable suspension of a solid in a liquid
US2822574A (en) * 1956-04-17 1958-02-11 American Viscose Corp Method and means for spinning a banded filament
US2972546A (en) * 1957-03-08 1961-02-21 Eastman Kodak Co Method and apparatus for manufacturing colored sheeting
US2961223A (en) * 1957-04-25 1960-11-22 American Viscose Corp Additive injecting and blending apparatus for filament spinning
US3133893A (en) * 1957-07-30 1964-05-19 American Cyanamid Co Pigment particles coated with polymer and method of preparing the same
US2993018A (en) * 1958-01-28 1961-07-18 Files De Calais Production of coloured filaments, threads and the like from viscose
US3023764A (en) * 1958-04-16 1962-03-06 American Viscose Corp Liquid blending system
US3249450A (en) * 1962-09-21 1966-05-03 Interchem Corp Coloring of regenerated cellulose
US3861931A (en) * 1972-07-20 1975-01-21 Fmc Corp Opaque cellophane for improved keeping
US20110040029A1 (en) * 2007-08-16 2011-02-17 Josef Glaser Mixture, especially spinning solution
US8709272B2 (en) 2007-08-16 2014-04-29 Helfenberger Immobilien Llc & Co Textilforschungs- Und Entwicklungs Keg Mixture, especially spinning solution
US9415372B2 (en) 2010-02-18 2016-08-16 Helfenberger Immobilien Llc & Co Textilforschungs—Und Entwicklungs Kg Method for producing a fiber

Also Published As

Publication number Publication date
BE490951A (en(2012))
GB677081A (en) 1952-08-06
NL65801C (en(2012))
DE825450C (de) 1951-12-20

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