Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/144—Alcohols; Metal alcoholates
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/21—Nylon
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber
  • Y10T428/2933—Coated or with bond, impregnation or core
  • Y10T428/2964—Artificial fiber or filament
  • Y10T428/2967—Synthetic resin or polymer
  • Y10T428/2969—Polyamide, polyimide or polyester

Definitions

• This invention relates to filaments of superpolyamides and the like and, more particularly, to a method of using them as bristles in brushes.
• filaments in question are those made from synthetic fiber-forming polymeric amides commercially designated by the generic name nylon and made in accordance with United States Patents 2,071,250, 2,071,253, and 2,130,948. From substances of this class, filaments are formed by a process which comprises the steps of melting the substance and extruding the molten mass by means of pressure through a suitable orifice to form a continuous filament, and then subjecting the filament to cold-drawing. Filaments thus made, and particularly those of finished diameter between about 0.010 and about 0.020 inch, are in general commercialuse as bristles in brushes of various types, and particularly in tufted brushes such as toothbrushes and hairbrushes.
• the brush is thus made up of a plurality of tufts, anchored in corresponding holes arranged, usually with geometrical regu-.
• Other objects of the invention will be apparent from the description given hereinafter.
• the bristle of .a synthetic polymeric amide with one or a mixture of certain substances presently to be designated, this coating being achieved conveniently and preferably by bringing the bristle into contact with the said substance contained in a liquid vehicle, whereby to coat the filament, and thereafter evaporating the liquid from the surface of the filamen
• the invention further comprises the use of such filaments, so coated, in the process of bristling brushes by known methods, including the preferred use of automatic machinery therefor. and also filament so coated and brushes made therefrom.
• the coating substances which are operative in accordance with the present invention include individuals and mixtures selected from the group comprising straight-chain aliphatic alcohols containing even numbers of carbon atoms between twelve and eighteen. Of the available members of this group, certain mixtures are pre ferred, but merely for reasons of commercial convenience.
• Alcohols of this group are ordinarily not available commercially in completely isolated form; for the purposes of the present invention the ordinaryv commercial mixtures of homologues are satisfactory, provided that they do not contain more than small proportions of homologues below or above the-stated limits of 12 and is carbon
• the application of a coating of one or a mixture of substances from this group upon a bristling .filament of synthetic fiber-forming polymeric amide may be.
• liquid vehicle used is a solvent for the coating substance and contact of the filament with the resulting sohition of the substance is complete, then this embodiment of the technique of the present invention results in an unbroken coating of the substance upon the filament.
• the liquid vehicle is one in which the coating substance is not soluble, the coating substance is finely dispersed therein and, in order to accomplish'the dispersion, and also to promote theuniform application of the resulting mixture to the filament, it is desirable to include in the liquid mixture a dispersing and wetting agent, such as a fatty alcohol sulfate.
• a dispersing and wetting agent such as a fatty alcohol sulfate.
• hexane As a solvent for coating substances of the group in question, hexane is ordinarily convenient and desirable, but obviously the selection may be made from other solvents, with due regard to the avoidance of a too rapid or a too slow rate ,of evaporation, and also of toxicity, high cost,
• the coating substance is to be applied in the form of a dispersion.
• the liquid vehicle selected the auxiliary substance ordinarily to be included for the purpose of effective dispersion and wetting, may be selected from the wide variety of "Lorol.”-A mixture of straight-chain (nor- 'mal) alcohols of even numbers of carbon atoms from 8 to 18, inclusive, with lauryl alcohol .preponderating.
• Example I A bristling filament composed of will ordinarily, but not necessarily, be water and polyhexamethylene adipamide and formed by extrusion and'cold-drawing, and having a diameter of 0.011 inch, is passed between felt covered pads, the surfaces of which carry a finely-divided mixture of-equal parts by welllht of 0-18 alcohol" and Iorol. This treatment serves to apply tothesurfaceofthefilamentacoating ofthis mixture. The filament is cut tolengths, bundled,
• a bristling filament composed of hexamethyiene adipamide, formed by extrusion and cold-drawing, and of diameter 0.011 inch.
• Example IX.-'--A result similar to those of the preceding examples is obtained by the use of a solution of "0-18 alcohol” alone in octane, in concentrations between about0.5 and 5.0 but the coating substance. particularly if it has been applied in higher concentrations, tends under some circumstances to flake off of the finished brushes. Acetone or hexane maybe used instead of octane.
• Example 'X.A similar result is obtained through the use of a solution of Lorol" alone in hexane, in concentrations within the same range, but inA-general the amount of Lorol” required is appreciably greater than the amount of "0-18 alcohol; required with the same filament.
• Example XL-Insteadof being passed through a solution in continuous form, the filament is made up into loose hanks, which are dipped into the solution, drained and dried.
• Example XIV The following ingredients are passed through a colloid mill:
• the resulting dispersion is applied to the surface of the bristling filament of Example 11/
• the filament is drained and thoroughly dried and used in automatic bristling equipment.
• the coating may be applied to the filament while the latter is in continuous strands, or in hanks, or in bundles.
• its concentration therein will be adjusted to the conditions of operation, such as the condition of aggregation of the filament, the thoroughnesswith which the wet filament is drained, et cetera, between a minimum which will leave an inadequate coating of the material and a maximum which will leave a coating so heavy as to be wasteful or unsightly.
• the percentage of coating material will lie usually between about 0.5 and 5, and pref erably between about 2 and 3. In a non-solvent the percentage will usually be between about 0.5 and 3, and preferably around 1.
• the present invention provides means .of ensuring the proper behavior of filaments of synthetic polymeric amides in the operations of bristling brushes, and thereby facilitates not only this operation but also the subsequent operations of trimming and finishing the tufts of filament. Correspondingly, it enhances the appearance and utility of brushes made from such filaments. It does not alter the stiffness of the filament nor introduce taste, odor, or toxic influence.
• the coatings of the present invention neither increase nor decrease the sensitivity of the filament to water.
• a bristling filament comprising a filament of a synthetic polymeric amide and a coating thereon of a substance selected from the group comprisingthe straight-chain alcohols containing even numbers of carbon atoms between 12 and 18, inclusive.
• a brush comprising filament of a synthetic polymeric amide and a coating upon said filament of a substance selected from the group comprising the straight-chain alcohols containing even numbers of carbon atoms between 12 and 18, inclusive.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Brushes (AREA)
• Materials For Medical Uses (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Priority Applications (4)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23596191

Family Applications (1)

Country Status (4)

Cited By (3)

• 0
  • BE BE461626D patent/BE461626A/xx unknown
• 1941
  • 1941-07-22 US US403550A patent/US2311405A/en not_active Expired - Lifetime
• 1942
  • 1942-07-22 GB GB10225/42A patent/GB558896A/en not_active Expired
• 1945
  • 1945-11-14 FR FR918955D patent/FR918955A/fr not_active Expired

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