US2869435A - Process and product - Google Patents

Process and product Download PDF

Info

Publication number
US2869435A
US2869435A US557096A US55709656A US2869435A US 2869435 A US2869435 A US 2869435A US 557096 A US557096 A US 557096A US 55709656 A US55709656 A US 55709656A US 2869435 A US2869435 A US 2869435A
Authority
US
United States
Prior art keywords
water
reaction product
fibrous material
gelatinous
sulfate
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 - Lifetime
Application number
US557096A
Other languages
English (en)
Inventor
Sands Seymour
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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
Priority to NL213412D priority Critical patent/NL213412A/xx
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US557096A priority patent/US2869435A/en
Priority to FR1170765D priority patent/FR1170765A/fr
Priority to DEP17707A priority patent/DE1078427B/de
Priority to CH351166D priority patent/CH351166A/fr
Priority to GB341/57A priority patent/GB847617A/en
Application granted granted Critical
Publication of US2869435A publication Critical patent/US2869435A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/22—Proteins

Definitions

  • This invention relates to a novel and useful process and product. More particularly it is concerned with a process of suspending a fibrous material in anaqueous medium and a composition employedasa coating for the fibrous material in the said process. 7
  • Example I An uncrimped 330,000 total denier tow of polyhexamethylene adipamide yarn made up of 6 denier per filament fibers is passed through an aqueous solution containing 3% by weight of lauryl pyridinium chloride. Immediately thereafter it is passed through an aqueous solution containing 3% by weight of sodium salt of lauryl sulfate. The tow is then dried in air and cut into A inch lengths. The fibers so formed are dropped onto the surface of water in a vessel being slowly stirred with a laboratory mixer. A 0.2% by weight suspension of fibers portant in the manufacture of water leaves, batts and the like, which may thereafter be processed into paper and paper-like structures.
  • Another object is to provide a process for the production of the reaction product recited above.
  • a further object is to provide a fibrous product bearingon its surface a coating of the reaction product recited above. 4
  • a still further object is to provide a process of ms pending fibrous materials in an aqueous medium to provide a uniform distribution therein.
  • a suspension of fibrous material in water is provided by a process which comprises the steps of coating the said material with the gelatinous reaction product of a water-soluble salt of a long chain aliphatic sulfate and a water-soluble salt of a long chain aliphatic quaternary ammonium compound, drying the coted material and thereafter adding the said dried coated material to a water suspending medium.
  • the gelatinousreaction product is formed by combining the two reactants in approximately equimolecular proportions in the presence of water. It may then be applied in the gelatinous state to the fibrous material from an aqueous suspension. Alternatively the gelatinous reaction product defined may be formed directly upon the fibrous material by suspending. the said material in first one reaction component and then the'second reaction component. After the fibrous material is coated with the gelatinous reaction product identified above, it is dried prior to suspension of the fibers in water.
  • the figure is a flow sheet'showing the preparation of an aqueous suspension of fibrous material.
  • the raw fibrous material may be coated with the gelatinous reaction product (AB) or it may be coated successively with first one reaction component (A) and then the other reaction component (B).
  • the suspension When the suspension is used to make paper, either on a hand-sheet, mold or on a continuous paper machine, the paper obtained is free ofclumps and uniform in thickness.
  • a control sample of paper formed without the use of the gelatinous reaction product is lumpy due to fiber clumps and displays poor uniformity.
  • Example I An aqueous solution containing 3% by weight of lauryl pyridinium chloride in water and an aqueous solution containing 3.5% of the sodium salt of lauryl sulfate are slowly mixed with mild agitation. A gelatinous precipitate forms. An uncrimped 385,000'total denier towof polyethylene'terephthalate yarn made up of 3 denier per filament fibers is passed through the suspension formed; It is then allowed to dry in air at room temperature. The coated dried tow is cut to lengths of A inch and the. resulting staple is dropped into water withmild agitation. The fibers disperse uniformly without cluster formation.
  • Example II various coating materials are applied to the yarn described in Example I, employing the technique of Example '1.
  • Each coating material is applied from an aqueous solution or'suspension contain ing 3% by weight of the indicated coating material.
  • the fiber picks up a 3% by weight coating based on the weight of the dry fiber.
  • Example V When. theconcentration of coating'material in Example V is raisedso as to produce a fiber-bearing 50% by weight of the sodium salt of lauryl sulfate based on the weight of the dry fiber, cluster formation still occurs.
  • Example VII A tow of polyhexamethylene' adipamide'yarn is passed through an aqueous suspension containing 4% by weight of the gelatinousreaction product of lauryl pyridinium chloride and the sodium salt of lauryl sulfate. After drying, the tow is cut' into inch length staple. 3 grams of the coated fiber is suspended by being gently stirred into 4 liters of water. The resulting uniform suspension is filtered over an 8 inch by 8 inch square of meshscreen to form a hand sheet. After drying, the hand sheet is dipped into an aqueous dispersion containing 4% of N-j methoxymethyl polyhexamethylene adipamide having 2,869,435- Patented Jan. 20, .1959
  • the gelatinous reaction product employed in the coating of the fibrous materials is produced by slowly mixing with the minimum of agitation and in the presence of water the water-soluble salt of a long chain aliphatic sulfate with the water-soluble salt of a long chain aliphatic quaternary ammonium compound.
  • a combination of reactants which is too rapid or accompanied by agitation which is too violent promotes the formation of a granular or crystalline precipitate which is not effective in the process of the present invention.
  • the mixing of the reaction components may be performed by adding one to the other in a continuous stream with just adequate agitation to promote thorough dispersion of each reactant in the reaction medium. In general the addition is performed at room temperature although the use of a particular temperature is not critical.
  • the reactants be combined in essentially equiinolecular proportions.
  • the solution in which the gelatinous reaction product is formed is of practical effectiveness when it contains more than at least about 2% of reaction product.
  • the use of aqueous suspensions containing 3 to 12% 6f the gelatinous reaction product are preferred. At substantially higher concentrations the increase in viscosity of the bath makes difficult its application as a coating to the fibrous materials.
  • the gelatinous reaction product is formed in situ upon the surface of the fibreus material.
  • the material is coated first with one reactant and then with the other.
  • the reactants are applied from aqueous solution containing more than at least about 2% of reactant.
  • the order in which the reactants are placed upon the fibrous materials is not critical. Regardless of method of application, it is preferred that the dried, coated fibrous material bear from about 3% to about by weight of the coating.
  • Typical of the gelatinous precipitates which are useful for practicing this invention are those formed by reacting lauryl pyridinium chloride with sodium lauryl sulfate, cetyl pyridinium chloride with sodium lauryl sulfate, octadecyl trimethyl ammonium chloride with sodium lauryl sulfate, lauryl pyridinium chloride with sodium decyl sulfate, lauryl pyridinium chloride with sodium octyl sulfate, lauryl pyridinium chloride.
  • the sodium salt of the sulfuric acid ester of technical grade lauryl alcohol a mixture of normal straight chain alcohols of even numbers of carbon atoms from 8 to 16, inclusive, with lauryl alcohol predominating. It is preferred to prepare the gelatinous precipitates from one or more alkyl or alkenyl sulfates having 8 to 18 carbon atoms and from alkyl or alkenyl quaternary ammonium compounds having 8 to 18 carbon atoms in the alkyl or alkenyl groups. Mixtures of alkyl and alkenyl groups in the same precipitate are also useful. Any Water soluble salt of the reactants may be employed. The alkali metal salts, particularly sodium and potassium, are preferred.
  • the gelatinous reaction product, or the reactants to form the said product may be applied from aqueous suspension to the fibrous or fiber-forming materials by any conventional method such as dipping, spraying, wicking, padding by feed roll and the like.
  • the drying operation may be preceded by centrifugal extraction, wringing out by passing through squeeze rollers, or the like, to remove excess liquid.
  • the drying operation is conveniently performed by permitting the coated structure to remain at room temperature for a period sufiicient to permit evaporation of liquid from the coating.
  • the operation may be hastened by employing elevated temperatures below those which will cause decomposition of the gelatinous reaction product. Reduced pressure may also be used.
  • the dried structure is dropped upon the surface of the agitated, suspending medium.
  • Commercial mixing equipment and the like may be employed effectively. While the suspending medium may be water, as much as about 50% of the water may be replaced by other polar solvents such as ethyl alcohol, acetone and the like. Furthermore, minor quantities of other substances may be present such as dyes and the like.
  • the fibrous particles be between about A to about /2' inch in length.
  • hydrophobic synthetic linear polymer fibers include those formed from polyamides, polyesteramides, polyureas, polyurethanes, copolyamides, polyesters, polyethers, acrylic polymers and copolymers (e. g., polyacrylonitrile), polyethylene, polyetrafiuoroethylene, polychlorotrifluoroethylene, polyvinylidene chloride and copolymers of vinylidene chloride.
  • Other fibers which may be dispersed in accordance with this invention include those of regenerated cellulose, cellulose acetate, cotton, spun glass, wood pulp, and the like.
  • the process and products of the present invention are particularly useful in the preparation of liquid suspension of fibrous materials employed in the formation of batts and Water-leaves, particularly Where the batt or water-leaf is formed on a moving screen such as upon the Fourdrinier Machine.
  • the process may be employed as a step in the manufacture of paper and paper-like products from synthetic fibers. Typical of such processes is that described in United States application No. 505,040.
  • Such synthetic papers are useful for the preparation of maps and charts, tracing papers, stencil papers, punch cards, filter papers, and a variety of other applications requiring durable, chemically-resistant papers.
  • the fibrous material to be coated in accordance with this invention may comprise waste fibers occurring from textile spinning and processing operations, such as fioc, cuttings, ends and the like which may be subsequently combined into a rope, tow or continuous yarn before application of the gelatinous reaction product,
  • the gelatinous reaction products of this invention when applied to fibers as taught herein even permit redispersal of these fibers, including fibers from paper made therewith.
  • a process of suspending a fibrous material in an essentially aqueous medium which comprises coating the said fibrous material with a gelatinous reaction product of a water-soluble salt of a long chain aliphatic sulfate and a water-soluble salt of a long chain aliphatic quaternary ammonium compound, the said gelatinous reaction product being formed by gently combining substantially equimolecular proportions of the said sulfate and said quaternary ammonium compound in the presence of water, and thereafter drying the said fibrous material bearing the said gelatinous reaction product and dropping the said dried, coated fibrous material upon the agitated surface of the said aqueous medium.
  • An article of manufacture comprising a fibrous material bearing on its surface a dried coating resulting from the drying of a gelatinous reaction product of a water-soluble salt of a long chain aliphatic sulfate and a water-soluble salt of a long chain aliphatic quaternary ammonium compound, the said gelatinous reaction product being formed by gently combining substantially equimolecular proportions of the said sulfate and the said quaternary ammonium compound in the presence of water.
  • gelatinous reaction product is formed from a water-soluble salt of a long chain aliphatic quaternary ammonium compound and the sodium salt of lauryl sulfate.
  • gelatinous reaction product is formed from a water-soluble salt of a long chain aliphatic sulfate and lauryl pyridinium chloride.
  • gelatinous reaction product is formed from lauryl pyridinium chloride and sodium salt of lauryl sulfate.
  • gelatinous reaction product is formed from lauryl pyridinium chloride and the sodium salt of decyl sulfate.
  • gelatinous reaction product is formed from octadecyl trimethyl ammonium chloride and the sodium salt of lauryl sulfate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Paper (AREA)
US557096A 1956-01-03 1956-01-03 Process and product Expired - Lifetime US2869435A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL213412D NL213412A (enrdf_load_stackoverflow) 1956-01-03
US557096A US2869435A (en) 1956-01-03 1956-01-03 Process and product
FR1170765D FR1170765A (fr) 1956-01-03 1957-01-03 Suspension de fibres synthétiques dans des liquides aqueux
DEP17707A DE1078427B (de) 1956-01-03 1957-01-03 Verfahren zur Herstellung von in waessrigen Medien gleichmaessig verteilbarem vollsynthetischem Fasermaterial und papieraehnlichen Gebilden daraus
CH351166D CH351166A (fr) 1956-01-03 1957-01-03 Procédé de préparation de suspensions uniformes de fibres synthétiques dans des liquides aqueux
GB341/57A GB847617A (en) 1956-01-03 1957-01-03 Improvements in or relating to the production of fibrous webs from synthetic fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US557096A US2869435A (en) 1956-01-03 1956-01-03 Process and product

Publications (1)

Publication Number Publication Date
US2869435A true US2869435A (en) 1959-01-20

Family

ID=24224035

Family Applications (1)

Application Number Title Priority Date Filing Date
US557096A Expired - Lifetime US2869435A (en) 1956-01-03 1956-01-03 Process and product

Country Status (6)

Country Link
US (1) US2869435A (enrdf_load_stackoverflow)
CH (1) CH351166A (enrdf_load_stackoverflow)
DE (1) DE1078427B (enrdf_load_stackoverflow)
FR (1) FR1170765A (enrdf_load_stackoverflow)
GB (1) GB847617A (enrdf_load_stackoverflow)
NL (1) NL213412A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002880A (en) * 1957-11-20 1961-10-03 American Enka Corp Manufacture of paper
US3093534A (en) * 1960-01-07 1963-06-11 Courtaulds Ltd Papermaking process and product
US3193447A (en) * 1961-03-15 1965-07-06 Schweizerische Viscose Manufacture of paper-like materials comprising synthetic fibres
US4000967A (en) * 1971-06-03 1977-01-04 Exxon Research And Engineering Company Wettable non-woven structures and components thereof
US4790907A (en) * 1987-08-03 1988-12-13 Intera Company, Ltd. Synthetic fiber

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328021A (en) * 1940-07-17 1943-08-31 Emuisol Corp Derivatives of amines
US2688033A (en) * 1950-09-19 1954-08-31 Joseph B Niederl Quaternary octylaniline derivatives

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328021A (en) * 1940-07-17 1943-08-31 Emuisol Corp Derivatives of amines
US2688033A (en) * 1950-09-19 1954-08-31 Joseph B Niederl Quaternary octylaniline derivatives

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002880A (en) * 1957-11-20 1961-10-03 American Enka Corp Manufacture of paper
US3093534A (en) * 1960-01-07 1963-06-11 Courtaulds Ltd Papermaking process and product
US3193447A (en) * 1961-03-15 1965-07-06 Schweizerische Viscose Manufacture of paper-like materials comprising synthetic fibres
US4000967A (en) * 1971-06-03 1977-01-04 Exxon Research And Engineering Company Wettable non-woven structures and components thereof
US4790907A (en) * 1987-08-03 1988-12-13 Intera Company, Ltd. Synthetic fiber

Also Published As

Publication number Publication date
FR1170765A (fr) 1959-01-19
NL213412A (enrdf_load_stackoverflow)
CH351166A (fr) 1960-12-31
DE1078427B (de) 1960-03-24
GB847617A (en) 1960-09-14

Similar Documents

Publication Publication Date Title
US2626213A (en) Asbestos dispersions and method of forming same
US2976205A (en) Preparation of webs and sheets from cellulose esters
US3677886A (en) Method of producing highly absorbent cellulose
EP1978138A2 (en) Anitimicrobial, antifungal and antiviral rayon fibers
US3223581A (en) Process for the production of a sheet of synthetic polymer fibrous material
US2710861A (en) Treatment of cellulose with the reaction product of primary aliphatic amines and ethylene oxide
DE2646332C3 (enrdf_load_stackoverflow)
US2869435A (en) Process and product
US4076672A (en) Lubricants for organic fibres
ES8205274A1 (es) Procedimiento para la obtencion de fibras, filamentos e hi- los a base de celulosa y de polimero acrilico
US4395306A (en) Method for preparing fibrous mats from a fibrous suspension
CA1094265A (en) Method for the production of a fiber composition
DE2516561A1 (de) Verfahren zur herstellung von fibrillen aus polymerisaten
US3119731A (en) Retention of thermoplastic material on pulp by a reaction product of a nitrogenous base and a salt of carboxylic acid
USRE23013E (en) Method of improving the processing
US3320117A (en) Process for the manufacture of rayon paper or non-woven fabric by the wet system
DE69906481T2 (de) Cellulosische partikel und verfahren zur herstellung derselben
US3193447A (en) Manufacture of paper-like materials comprising synthetic fibres
AT205334B (de) Verfahren zur Herstellung einheitlicher Suspensionen von synthetischen Fasern in wässerigen Flüssigkeiten, insbesondere zur Fabrikation papierartiger Gefüge
US3019509A (en) Crimped regenerated cellulose fibers
US2764498A (en) Process of plasticizing thermoplastic cellulose esters and ethers with an organic plasticizer dispersed in aqueous medium with a cationic surface active agent
NO122976B (enrdf_load_stackoverflow)
US3907633A (en) Process of making polyolefin fibers
DE1469317A1 (de) Verfahren zur Unterdrueckung des charakteristischen Geruchs von Keratinfasern
US2623874A (en) Cellulose-morpholinium derivative composition and process