EP0283556B1 - Procédé pour la production de revêtements textiles de surface enduits de polyuréthane, revêtements textiles de surface enduits de polyuréthane et l'utilisation pour un apprêt perméable et hydrofuge - Google Patents

Procédé pour la production de revêtements textiles de surface enduits de polyuréthane, revêtements textiles de surface enduits de polyuréthane et l'utilisation pour un apprêt perméable et hydrofuge Download PDF

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Publication number
EP0283556B1
EP0283556B1 EP87114169A EP87114169A EP0283556B1 EP 0283556 B1 EP0283556 B1 EP 0283556B1 EP 87114169 A EP87114169 A EP 87114169A EP 87114169 A EP87114169 A EP 87114169A EP 0283556 B1 EP0283556 B1 EP 0283556B1
Authority
EP
European Patent Office
Prior art keywords
polyurethane
anionic
cationic
dispersion
aqueous
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
EP87114169A
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German (de)
English (en)
Other versions
EP0283556A2 (fr
EP0283556A3 (en
Inventor
Kurt Dr. Dahmen
Dolf Dr. Stockhausen
Karl-Heinz Stukenbrock
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.)
Stockhausen GmbH and Co KG
Original Assignee
Chemische Fabrik Stockhausen GmbH
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 Chemische Fabrik Stockhausen GmbH filed Critical Chemische Fabrik Stockhausen GmbH
Publication of EP0283556A2 publication Critical patent/EP0283556A2/fr
Publication of EP0283556A3 publication Critical patent/EP0283556A3/de
Application granted granted Critical
Publication of EP0283556B1 publication Critical patent/EP0283556B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/141—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of two or more polyurethanes in the same layer
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
    • A41D31/102—Waterproof and breathable
    • 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
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/2395—Nap type surface
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2041—Two or more non-extruded coatings or impregnations
    • Y10T442/2098—At least two coatings or impregnations of different chemical composition
    • Y10T442/2107—At least one coating or impregnation contains particulate material
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2213—Coating or impregnation is specified as weather proof, water vapor resistant, or moisture resistant
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2221—Coating or impregnation is specified as water proof
    • Y10T442/2246—Nitrogen containing
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3325—Including a foamed layer or component
    • Y10T442/3366—Woven fabric is coated, impregnated, or autogenously bonded
    • Y10T442/3374—Coating or impregnation includes particulate material other than fiber

Definitions

  • the invention relates to a method for producing polyurethane-coated textile fabrics, polyurethane-coated textile fabrics and their use for producing breathable and water-repellent finishing.
  • Fabrics are increasingly in demand for sports, leisure and rain protection clothing, which on the one hand are water and wind resistant on the outside, and on the other hand discharge water vapor from the inside to the outside.
  • the textiles provided are made hydrophobic. This gives good breathability and water repellency (water repellency), but not water resistance.
  • Several new developments have been presented in recent years to improve water tightness, for example in chemical fibers / textile industry, 36th / 88th. Volume, 1986, p. 66.
  • One possibility is the lamination of a carrier material with membranes or microporous foils based on hydrophilic copolyesters or polyurethanes, the porosity sometimes having to be created subsequently by fine perforation of the plastic webs by means of electron beams.
  • Another possibility is to coat a support with solvent-containing polyurethanes to form a compact, microporous PU layer.
  • All of these processes have disadvantages in that solvent-based adhesives have to be used for the lamination and solvents have to be used for the coating, the processing of which increasingly poses problems with regard to costs, flammability, toxicity and environmental pollution.
  • a fibrous, porous sheet material is impregnated with an aqueous, ionic dispersion of a polyurethane with covalently bound, solubilizing, ionizable groups and then coagulated with aqueous acid or alkali solutions.
  • the procedure requires working with large amounts of liquid, firstly during the coagulation itself, but then also when washing out and neutralizing the coagulant used; this means that a multitude of aggregates is required for this process, which are not available in most equipment factories.
  • a coagulation time of 5 minutes does not correspond to normal practical conditions because it makes rational production impossible.
  • the object of the invention is to improve the durability of the polyurethane layer applied to such a sheet material and thus to achieve a long-lasting water-tightness of the coated material, which also withstands cleaning and washing.
  • polyurethane dispersions which can be used for the process according to the invention are commercially available and are prepared by known processes, as described, for example, in DE-A 29 31 044. They contain polyurethanes with ionic or ionizable groups which are covalently bonded to the main polymer chain and which disperse the polymer in water enable. If the solubility-promoting, covalently bonded groups are carboxyl or. Sulfonic acid groups or their salts are called anionic polyurethane dispersions. If the solubilizing group covalently bound to the polymer chain is an amino group or its salt, it is a cationic polyurethane dispersion.
  • Such dispersions often contain a solids content of between 10 and 60% by weight, usually between 30 and 50% by weight.
  • the viscosity of the commercially available, aqueous polyurethane dispersions can vary widely between 10 and 200,000 mPa.s.
  • Such process steps are familiar to the person skilled in the art of coating technology, and he can determine the correct selection according to the type and amount of the necessary viscosity regulators with a few preliminary tests.
  • the coating pastes are preferably adjusted to viscosities between 50,000 and 200,000 mPa.s.
  • the anionic and cationic polyurethane dispersions are used in a weight ratio of 1: 2 to 2: 1, preferably in a weight ratio of 1: 1, for the primer and top coat using the in-line two-coat technology.
  • Preference is given to amounts by weight of oppositely charged aqueous polyurethane dispersions such that the anionic and the cationic, covalently bonded, solubilizing groups are present in stoichiometrically equivalent amounts.
  • the procedure can be such that the anionic dispersion is spread onto the substrate as the first coat and then the cationic dispersion is applied, wet-on-wet, or vice versa, that the cationic polyurethane dispersion is used as the primer and the anionic dispersion is used as the top coat without intermediate drying .
  • Pre-coat and top coat can each be applied as a compact coat, e.g. according to the air knife method.
  • the top coat can be applied as a foam, e.g. with a roller squeegee.
  • the foam application gives the textile material thus finished a particularly soft and voluminous handle and a good textile fall.
  • the wet layers of anionic and cationic coating are selected in such a range that the finished material has a total dry layer of between 5 and 50 g / m2, preferably between 15 and 35 g / m2 .
  • the equipment on the units used in the coating technology is applied in the usual way Temperatures between 80 and 180 ° C, preferably between 120 - 140 ° C, dried and optionally slightly calendered while still warm.
  • the invention further relates to the textile fabrics manufactured by the process according to the invention and coated with polyurethane and their use for the production of breathable, water-vapor-permeable, but water- and wind-repellent clothing or technical textiles, such as, for example Tarpaulins, or of leather substitutes.
  • the finished textiles can be sanded or sanded afterwards and thus give them a suede-like or suede-like appearance without worsening the other technical properties. In this way it is possible to produce leather substitutes.
  • the paste has a viscosity of 60,000 mPa.s (Brookfield RVT, spindle 6/10 U min ⁇ 1).
  • the paste is applied to a commercially available polyester / cotton 66/33 cotton fabric using the air knife method coated with a basis weight of 160 g / m2 and results in a wet coating of 30 g / m2.
  • the coated fabric is then dried in an air drying cabinet at 90 ° C. for 2 minutes and then subjected to hydrophobization. For this purpose, it is immersed in a float composed of 40 g / l of a fluorocarbon resin emulsion, squeezed onto a 43% wet pad and dried and condensed in a drying cabinet at 170 ° C. for 4 minutes.
  • the fabric is then placed on a two-roll calender between a steel and calendered a plastic roller, the temperature of the steel roller 170 ° C, the pressure 150 kg / cm2 linear and the working speed 10 m / min.
  • the fabric thus finished has a total dry coating of 21 g / m2 of polyurethane. The measurement results are shown in the table.
  • aqueous, anionic polyurethane dispersion is applied as the first coat and an aqueous, cationic polyurethane dispersion as the second coat.
  • Pastes of the following composition are used for this:
  • the finished fabric has a total dry polyurethane coating of 17 g / m2 and, after post-hydrophobization according to Example 1, gives the measurement values listed in the table.
  • the wet coating for the primer was 60 g / m2, corresponding to a dry coating of 15 g / m2.
  • the cleaning is carried out on a B ⁇ WE R8 cleaning system in perchlorethylene with the addition of 2 g / l cleaning booster for 8 min and a reversing run with additional load.
  • the humidity above the fleet is 65% rel. Humidity. It is then rinsed in clear perchlorethylene for 3 min, spun and dried.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)

Claims (10)

  1. Procédé de fabrication d'un produit textile se présentant sous forme de surface, revêtu de polyuréthane, par revêtement à l'état humide de la matière textile à l'aide d'une dispersion ionique aqueuse d'un polyuréthane à radicaux ionisables, communiquant de la solubilité, liés de manière covalente, qui ne contient plus de radicaux isocyanate libres, puis séchage de la matière revêtue, ainsi qu'éventuellement imperméabilisation supplémentaire, caractérisé en ce qu on réalise le revêtement soit d'abord à l'aide d'une dispersion cationique aqueuse d'un polyuréthane à radicaux cationiques, communiquant de la solubilité, liés de manière covalente, puis à l'aide d'une dispersion anionique aqueuse d'un polyuréthane à radicaux anioniques, communiquant de la solubilité, liés de manière covalente, soit d'abord à l'aide d'une dispersion anionique aqueuse d'un polyuréthane à radicaux anioniques, communiquant de la solubilité, liés de manière covalente, puis à l'aide d'une dispersion cationique aqueuse d'un polyuréthane à radicaux cationiques, communiquant de la solubilité, liés de manière covalente.
  2. Procédé suivant la revendication 1, caractérisé en ce qu on utilise les dispersions anionique et cationique dans un rapport en poids de 1:2 à 2:1, de préférence dans le rapport de poids 1:1.
  3. Procédé suivant l'une des revendications 1 à 2, caractérisé en ce qu'on utilise les dispersions cationique et anionique dans des quantités telles que les radicaux anioniques et cationiques, communiquant de la solubilité, liés de manière covalente sont présents dans des quantités équivalentes sur le plan stoechiométrique.
  4. Procédé suivant l'une des revendications 1 à 3, caractérisé en ce qu'on applique les dispersions anionique et cationique sous forme d'une couche compacte.
  5. Procédé suivant l'une des revendications 2 à 3, caractérisé en ce qu'on applique la première dispersion sous la forme d'une couche compacte et la seconde dispersion sous la forme d'une couche expansée.
  6. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce qu'on utilise des dispersions présentant une teneur en matières solides de 10 à 60% en poids, de préférence de 20 à 50% en poids.
  7. Procédé suivant l'une des revendications 1 à 6, caractérisé en ce qu'on utilise des dispersions d'une viscosité de 10 à 200.000 mPa.s, de préférence de 200 à 100.000 mPa.s, leur viscosité étant éventuellement ajustée par dilution à l'eau ou addition d'épaississants.
  8. Procédé suivant l'une des revendications 1 à 7, caractérisé en ce qu'on choisit les applications à l'état humide des revêtements anionique et cationique dans une gamme telle que la matière textile séchée et éventuellement imperméabilisée est revêtue de 5 à 50 g/m², de préférence de 15 à 35 g/m², de polyuréthane.
  9. Produit textile se présentant sous forme de surface, revêtu de polyuréthane, pouvant être obtenu par le procédé conforme aux revendications 1 à 8.
  10. Utilisation du produit textile se présentant sous forme de surface, revêtu de polyuréthane, suivant la revendication 9, en vue de la fabrication de vêtements, ou de textiles techniques ou de produits en cuir synthétique, à activité respiratoire, perméables à la vapeur d'eau et écartant l'eau et le vent.
EP87114169A 1986-10-04 1987-09-29 Procédé pour la production de revêtements textiles de surface enduits de polyuréthane, revêtements textiles de surface enduits de polyuréthane et l'utilisation pour un apprêt perméable et hydrofuge Expired - Lifetime EP0283556B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863633874 DE3633874A1 (de) 1986-10-04 1986-10-04 Verfahren zur herstellung mit polyurethan beschichteter textiler flaechengebilde, mit polyurethan beschichtete textile flaechengebilde und ihre verwendung zur herstellung atmungsaktiver und wasserabweisender ausruestungen
DE3633874 1986-10-04

Publications (3)

Publication Number Publication Date
EP0283556A2 EP0283556A2 (fr) 1988-09-28
EP0283556A3 EP0283556A3 (en) 1989-08-30
EP0283556B1 true EP0283556B1 (fr) 1992-05-20

Family

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EP87114169A Expired - Lifetime EP0283556B1 (fr) 1986-10-04 1987-09-29 Procédé pour la production de revêtements textiles de surface enduits de polyuréthane, revêtements textiles de surface enduits de polyuréthane et l'utilisation pour un apprêt perméable et hydrofuge

Country Status (5)

Country Link
US (1) US4774131A (fr)
EP (1) EP0283556B1 (fr)
JP (1) JPS6399376A (fr)
CA (1) CA1301566C (fr)
DE (2) DE3633874A1 (fr)

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DE4018608A1 (de) * 1990-06-11 1991-12-12 Karl Heinz Hora Verfahren zur herstellung einer offset-druckplatte
DE4038705A1 (de) * 1990-12-05 1992-06-11 Hasso Von Bluecher Schichtmaterial fuer medizinische zwecke
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US5787502A (en) * 1994-02-17 1998-08-04 Middleton; Nigel John Thermoinsulative protective garments
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TWI256340B (en) 1999-02-01 2006-06-11 Dainippon Ink & Chemicals Aqueous urethane resin composition for forming pores, process for producing fiber sheet-shape composite
AU6977901A (en) * 2000-06-09 2001-12-17 Procter & Gamble Biodegradable coated substrates
KR100416414B1 (ko) * 2000-10-17 2004-01-31 (주)나노폴 수분산 폴리우레탄수지 합성피혁의 제조방법
US6767849B2 (en) 2001-09-24 2004-07-27 Malden Mills Industries, Inc. Fabric with disparate surface properties
JP5095909B2 (ja) * 2003-06-24 2012-12-12 ローム・アンド・ハース・エレクトロニック・マテリアルズ，エル．エル．シー． 触媒組成物および析出方法
US20050058515A1 (en) * 2003-09-12 2005-03-17 Markusch Peter H. Geotextile/polymer composite liners based on waterborne resins
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DE102006016638A1 (de) * 2006-04-08 2007-10-11 Bayer Materialscience Ag Mikroporöse Beschichtung auf Basis von Polyurethan-Polyharnstoff
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ITBO20100507A1 (it) * 2010-08-05 2012-02-06 Sterne Internat S P A Procedimento per rendere idrorepellenti tessuti, capi in maglia e simili.
EP3030623B1 (fr) * 2013-08-06 2018-11-14 Henkel AG & Co. KGaA Composition de revêtement pour prétraitement de surface métallique, sa préparation et son utilisation
JP6396684B2 (ja) * 2014-06-03 2018-09-26 セーレン株式会社 撥水撥油性ポリエステル繊維構造物およびその製造方法
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US20220205171A1 (en) * 2020-12-29 2022-06-30 Web-Pro Corporation Waterproof, moisture-permeable composite non-woven fabric able to block viruses and blood

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Also Published As

Publication number Publication date
DE3633874A1 (de) 1988-04-14
DE3779300D1 (de) 1992-06-25
EP0283556A2 (fr) 1988-09-28
DE3633874C2 (fr) 1988-10-13
JPS6399376A (ja) 1988-04-30
CA1301566C (fr) 1992-05-26
US4774131A (en) 1988-09-27
EP0283556A3 (en) 1989-08-30

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