WO2015142340A1 - Textile articles including a polymeric layer and methods of forming the same - Google Patents

Textile articles including a polymeric layer and methods of forming the same Download PDF

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Publication number
WO2015142340A1
WO2015142340A1 PCT/US2014/031331 US2014031331W WO2015142340A1 WO 2015142340 A1 WO2015142340 A1 WO 2015142340A1 US 2014031331 W US2014031331 W US 2014031331W WO 2015142340 A1 WO2015142340 A1 WO 2015142340A1
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WO
WIPO (PCT)
Prior art keywords
polymeric layer
web
polymer particles
textile article
polymeric
Prior art date
Application number
PCT/US2014/031331
Other languages
French (fr)
Inventor
Linan ZHOU
Yvonne Abel
Olivia ZHOU
Christiane Saunier
Frederik JOURAVLENKO
Original Assignee
Honeywell International Inc.
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 Honeywell International Inc. filed Critical Honeywell International Inc.
Priority to PCT/US2014/031331 priority Critical patent/WO2015142340A1/en
Publication of WO2015142340A1 publication Critical patent/WO2015142340A1/en

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial 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
    • D06N3/14Artificial 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0068Polymeric granules, particles or powder, e.g. core-shell particles, microcapsules
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00Gloves
    • A41D19/0055Plastic or rubber gloves
    • A41D19/0058Three-dimensional gloves
    • A41D19/0065Three-dimensional gloves with a textile layer underneath
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2205/00Condition, form or state of the materials
    • D06N2205/02Dispersion
    • D06N2205/023Emulsion, aqueous dispersion, latex
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2205/00Condition, form or state of the materials
    • D06N2205/24Coagulated materials
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2209/00Properties of the materials
    • D06N2209/10Properties of the materials having mechanical properties
    • D06N2209/105Resistant to abrasion, scratch
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2211/00Specially adapted uses
    • D06N2211/10Clothing
    • D06N2211/103Gloves

Definitions

  • the technical field generally relates to textile articles and methods of forming the textile articles. More particularly, the technical field relates to textile articles that include a web of material and a polymeric layer disposed on the web of material, and methods of forming the textile articles with the polymeric layer disposed on the web of material.
  • Textile articles that include a web of material typically formed of woven or non- woven fibers, with a polymeric layer disposed on the web of material are known for a variety of applications.
  • articles of clothing such as work gloves, socks, outerwear, or shoe liners that include a fabric web of material may include a polymeric layer disposed on the fabric web of material to provide additional protection, grip, and/or durability to the articles of clothing.
  • luggage articles may include a fabric web of material with a polymeric layer disposed on the fabric web to maximize durability.
  • Conventional polymeric layers disposed on the web of material may be formed from a variety of different polymers, and may be formed through a variety of different methods.
  • Polyurethanes are one class of polymers that are included in the polymeric layers.
  • conventional polymeric layers that are formed on the web of material and that include polyurethane are formed by dipping the web of material into a solvent-borne polyurethane dispersion that employs dimethyl formamide (DMF) as the solvent.
  • DMF dimethyl formamide
  • the DMF-borne polyurethane dispersion generally produces polymeric layers that exhibit excellent abrasion resistance.
  • DMF-borne polyurethane dispersions There is a general desire to identify a suitable alternative to DMF-borne polyurethane dispersions. However, many alternatives to DMF-borne polyurethane dispersions exhibit significantly inferior abrasion resistance as compared to the DMF-borne polyurethane dispersions.
  • a textile article includes a web of material and a polymeric layer disposed on the web of material.
  • the polymeric layer includes a polymeric matrix that includes polyurethane and polymer particles disposed in the polymeric matrix.
  • the polymer particles include a different composition from the polymeric matrix.
  • a polymer-coated glove in another embodiment, includes a fabric web of material in a shape of the glove and a polymeric layer disposed on the fabric web of material.
  • the polymeric layer includes a polymeric matrix that includes crosslinked polyurethane.
  • the polymeric layer further includes a coagulant and polymer particles disposed in the polymeric matrix.
  • the polymer particles include fluorine-containing polymer and have an average nominal dimension of from about 1 ⁇ to about 50 ⁇ .
  • the polymer particles are present in an amount of from about 0.5 to about 20 percent by weight based on the total weight of the polymeric layer.
  • a method of forming a textile article that has a polymeric layer disposed thereon includes providing an aqueous dispersion that includes a polymeric matrix precursor and polymer particles.
  • the polymeric matrix precursor includes polyurethane, and the polymer particles include a different composition from the polymeric matrix precursor.
  • the aqueous dispersion is applied on a web of material to form an intermediate article that has an intermediate coating disposed thereon.
  • the intermediate coating is cured on the intermediate article to form the textile article having the polymeric layer disposed thereon.
  • FIG. 1 is a perspective view of an exemplary embodiment of a textile article including a web of material and a polymeric layer disposed on the web of material;
  • FIG. 2 is a cross-sectional view of the textile article of FIG. 1 showing the web of material and the polymeric layer disposed on the web of material.
  • Textile articles that include a web of material and a polymeric layer disposed on the web of material, and methods of forming the textile articles, are provided herein.
  • the textile article is not particularly limited and may be any article that includes a web of material and a polymeric layer disposed on the web of material.
  • a web of material is a woven or non-woven mat of fibers.
  • the polymeric layer that is disposed on the web of material exhibits excellent abrasion resistance even when formed in the absence of dimethyl formamide (DMF) solvent.
  • the polymeric layer includes a polymeric matrix that includes polyurethane and polymer particles disposed in the polymeric matrix, with the polymer particles having a different composition from the polymeric matrix.
  • the presence of the polymer particles increases abrasion resistance of the polymeric layer as compared to polymeric layers that include polyurethane and that are free of the polymer particles, thereby accounting for performance trade-offs associated with elimination of DMF solvent during formation of the polymeric layer.
  • the textile article 10 is an article of clothing, such as a glove 10.
  • the textile article may be a different article of clothing such as a sock, a shell of a jacket, or a shoe insert, or may be a non-clothing article such as a duffel bag, suitcase, or the like; a tent, a tarp, or any other type of article where a polymeric layer may be disposed on a web of material, i.e., a woven or non-woven mat of fibers, to provide durability and protection to the web of material.
  • the textile article 10 includes a web of material 12 and a polymeric layer 14 that is disposed the web of material 12.
  • disposed on it is meant that the polymeric layer 14 overlies the web of material 12 with optional intrusion of material of the polymeric layer 14 into the web of material 12 at an interface therebetween.
  • the web of material 12 is in a shape of the textile article 10, although it is to be appreciated that in other embodiments (not shown), the web of material may simply be a sheet of material with no particular shape, or may be used as part of the textile article.
  • the web of material 12 is a woven or non- woven mat of fibers.
  • the mat of materials may be a woven mat of fibers (e.g., conventional fabrics) or a non-woven mat of fibers (e.g., felt).
  • Suitable fibers may be chosen from natural fibers such as cotton, leather, hemp, or the like; synthetic fibers such as rayon, polyester, or the like; or a combination of natural and synthetic fibers.
  • the polymeric layer 14 is a layer of material that exhibits physical properties of a plastic and that contains at least 50 weight % of polymer compounds, based on the total weight of the polymeric layer 14.
  • the polymeric layer 14 includes a polymeric matrix 16 and polymer particles 18 disposed in the polymeric matrix
  • the polymeric matrix 16 as referred to herein, is a continuous phase as viewed under
  • the polymeric matrix 16 includes polyurethane, i.e., any compound with repeating units connected through urethane linkages.
  • the polyurethane may be crosslinked or uncrosslinked, with crosslinking established through urethane linkages or other types of bonds.
  • Suitable polyurethanes are not particularly limited, and it is believed that the polymer particles 18 as described herein may increase abrasion resistance for a range of different polyurethanes, especially when the polymeric layer 14 is formed from aqueous polyurethane latex.
  • suitable polyurethanes include aliphatic or aromatic polyether polyurethanes or polyester urethanes, or combinations thereof.
  • the polymeric matrix 16 includes crosslinked aliphatic polyester polyurethane.
  • Polyurethanes may be present in the polymeric matrix 16 in an amount of from 50 to 100 weight % based on the total weight of the polymeric matrix 16. It is to be appreciated that the polymeric matrix 16 may include a combination of different polyurethanes, and further include .
  • the polymer particles 18 are disposed in the polymeric matrix 16 and are distinguishable from the polymeric matrix 16 under 100 magnification.
  • the polymer particles 18 are present as a discontinuous phase in the polymeric matrix 16 and are distinguishable from the polymeric matrix 16 on this basis.
  • the polymer particles 18 exhibit a defined boundary with the surrounding polymeric matrix 16 that is visibly perceptible under 100 magnification.
  • the polymer particles 18 are dispersed throughout a volume of the polymeric matrix 16, i.e., the polymer particles 18 are present both at a surface 20 of the polymeric layer 14 and beneath the surface 20 of the polymeric layer 14.
  • the polymer particles 18 include a different composition from the polymeric matrix 16, meaning that the polymer particles 18 are chemically distinguishable from the polymeric matrix 16.
  • the polymer particles 18 include a fluorine- containing polymer.
  • fluorine-containing polymers exhibit significantly reduced coefficient of friction as compared to other types of polymers, and the presence of at least some fluorine-containing polymer in the polymer particles 18 provides the polymeric layer 14 with an overall reduced coefficient of friction as compared to polymeric layers that do not include the polymer particles. With the reduced coefficient of friction, the polymeric layer 14 that includes the polymer particles 18 exhibits enhanced abrasion resistance as compared to polymeric layers that do not include the polymer particles.
  • Suitable fluorine-containing polymers include, but are not limited to, polyfluoroalkylene polymers such as polytetrafluoroethylene (PTFE); fluoropolymers based on vinylidene fluoride (VDF); vinyl ester of vinyl ethers such as poly(fluoroethylene-vinyl ether) (PFEVE); perfluorinated polyether (PFPE); and the like.
  • the fluorine-containing polymers may also include copolymers of fluorine-containing monomers and non- fluorinated monomers.
  • the fluorine-containing polymers may be included in the polymer particles 18 as the only polymer, or the polymer particles 18 may further include an additional polymer that is different from the fluorine-containing polymer, and the fluorine- containing polymer and the additional polymer may be present as a physical mixture in the polymer particles 18.
  • the additional polymer may include a polyalkylene polymer such as polyethylene or polypropylene.
  • the fluorine-containing polymer is included in the polymer particles 18 in an amount of from about 0.5 to about 100 weight %, or such as from about 0.5 to about 20 weight %, based on the total weight of the polymer particles 18.
  • the polymer particles 18 are generally observable as a discontinuous phase in the polymeric layer 14 under 100 magnification.
  • the polymer particles 18 have an average nominal dimension of from about 1 ⁇ to about 50 ⁇ , such as from about 6 to about 10 ⁇ , and it is believed that average nominal dimension of the polymer particles 18 within the aforementioned ranges provide maximized abrasion resistance to the polymeric layer 14.
  • the particles are spherical and the average nominal dimension is the particle's average nominal diameter but in other embodiments, the particle is not spherical and the dimension is the average nominal dimension of the particle. Amounts of the polymer particles 18 included in the polymeric layer 14 may also impact abrasion resistance of the polymeric layer 14.
  • the polymer particles 18 are present in the polymeric layer 14 in an amount of from about 0.5 to about 20 weight % based on the total weight of the polymeric layer 14.
  • the polymeric layer 14 may further include polymers in the polymeric matrix 16 that are different from polyurethanes, and may further include additional non-polymeric components that are indistinguishable within the continuous phase of the polymeric matrix 16 at 100 magnification.
  • the polymeric matrix 16 may include additional components such as, but not limited to, plasticizers, softening agents, pigments, thickeners, foam stabilizers, UV light stabilizers, and the like.
  • the polymeric layer 14 further includes a coagulant, which may be present under conditions where the polymeric layer 14 is formed from an aqueous polyurethane latex.
  • the coagulant may be included in the polymeric layer 14 as a result of a manner in which the polymeric layer 14 is formed, e.g., the web of material 12 may first be dipped in a solution containing the coagulant before applying the aqueous polyurethane latex on the web of material 12 with the resulting polymeric layer 14 thereby incorporating the coagulant. Additional details regarding an exemplary method of forming the textile articles 10 are described in further detail below. Suitable coagulants are not particularly limited, and an example of suitable coagulant is calcium nitrate.
  • the polymeric layer 14 may be formed from an aqueous polyurethane latex, thereby providing an alternative to use of dimethyl formamide as well as other organic solvents during formation of the polymeric layer 14.
  • the polymeric layer 14 may be free from dimethyl formamide, and may further be free of organic solvents in general.
  • the polymeric layer 14 is in the form of an elastomeric film (i.e., no foaming is desired in the polymeric layer 14 although a small degree of cell formation may occur in the polymeric layer 14 as a result of real-world manufacturing).
  • the polymeric layer 14 is in the form of a foam having cells, and the polymeric layer 14 may be foamed through addition of conventional foaming agents and, optionally, foam stabilizers.
  • the polymeric layer may include more than one discrete layer, such as an inner film and an outer film (not shown).
  • the outer film may include the polymer particles to provide the desired abrasion resistance to the polymeric layer.
  • the polymeric layer 14 generally exhibits excellent abrasion resistance attributable to the presence of the polymer particles 18 therein, even when organic solvents such as dimethyl formamide are omitted during formation of the polymeric layer 14.
  • the polymeric layer 14 exhibits an abrasion resistance of level 4 (which is the highest level 4) in accordance with EN388 abrasion testing. Hardness of the polymeric layer 14 may vary and may be adjusted based upon various factors, such as the type of crosslinker that is employed. In embodiments, the polymeric layer 14 has a Shore A hardness of 26 or less, such as 25 or less.
  • an aqueous dispersion is provided that includes a polymeric matrix 16 precursor and the polymer particles 18.
  • the polymer particles 18 are described in detail above.
  • the polymeric matrix 16 precursor may include polyurethane, and the polymeric matrix 16 precursor may be in a form that is adapted for coating the web of material 12 before setting to form the polymeric layer 14 as described above.
  • the polyurethane of the polymeric matrix 16 precursor may include reactive groups that are available for crosslinking with a crosslinker.
  • the polymeric matrix 16 precursor may be an aqueous polyurethane latex, or may be a different form of a water-dispersible polyurethane such as a polyurethane pre-polymer.
  • the aqueous polyurethane latex as referred to herein, is an aqueous dispersion or emulsion of polyurethane-containing particles that are formed in the presence of water and, optionally, one or more dispersing or emulsifying agents (e.g., a surfactant, alkali-soluble polymer, or the like).
  • a surfactant e.g., alkali-soluble polymer, or the like.
  • An example of a suitable polymeric matrix 16 precursor is commercially available as Impranil® DL 1380 from Bayer MaterialScience AG of Leverkusen, Germany.
  • the aqueous dispersion may further include other optional components such as, but not limited to, a plasticizer, a pigment, a thickener, a crosslinker, or a combination thereof.
  • the crosslinker may be blocked with an appropriate blocking agent to extend cure times.
  • a suitable blocked crosslinker is a blocked- isocyanate crosslinker.
  • low temperature crosslinkers can be used, such as those that react at a temperature of about 90°C or less.
  • An example of a suitable low temperature crosslinker is a polyaziridine tri-functional crosslinker.
  • a coagulant solution is also provided that includes the coagulant dispersed in water.
  • the web of material 12 is provided and heated to a temperature of at least 60°C, such as about 90°C, prior to applying the aqueous dispersion on the web of material 12.
  • the coagulant is applied on the web of material 12 prior to applying the aqueous polyurethane latex on the web of material 12.
  • the web of material 12 may be dipped in the coagulant solution, followed by drying.
  • the aqueous dispersion is then applied on the web of material 12 to form an intermediate article that has an intermediate coating disposed on the intermediate article.
  • the intermediate coating includes the polyurethane matrix precursor and the coagulant.
  • the intermediate coating is cured on the intermediate article, optionally after drying, to form the textile article 10 that has the polymeric layer 14 disposed thereon.
  • the intermediate article may be cured at a temperature from about 60 to about 130°C.
  • a low- temperature temperature crosslinker is employed, in which case the intermediate article may be cured at a temperature of about 90°C or less, such as from about 60 to about 90°C.
  • the polymeric layer 14 may be foamed.
  • a foam stabilizer and a foam reagent may be included in the aqueous dispersion, followed by mechanical foaming of the aqueous dispersion prior to applying the aqueous dispersion on the web of material 12.
  • the foamed polymeric layer 14 may be formed in the same manner as described above.
  • the textile article 10 may be formed with the polymeric layer 14 including more than one discrete layer, such as an inner film and an outer film.
  • the discrete layers may be foamed or unfoamed, and at least the outer film includes the polymer particles 18 to enhance abrasion resistance.
  • Textile articles are prepared using compositions as set forth in TABLE I, with amounts provided for weight % based on the total weight of the compositions and parts per hundred of solids in the composition (PHS):
  • Latex A is 60 wt% solids aqueous dispersion including an aliphatic polyester polyurethane, commercially available from Bayer MaterialScience AG of Leverkusen, Germany.
  • Additive A is a surface-passivated inorganic pigment commercially available from Clariant International Limited of Muttenz, Switzerland.
  • Additive B is a softening agent commercially available from Suzhou Fubin Chemical Co. Ltd. of Jiangsu, China.
  • Additive C is a foaming agent commercially available as Stokal STA from Giovanni Bozzetto S.p.A. of Bergamo, Italy.
  • Additive D is a foam stabilizer commercially available as Stokal SR from Giovanni Bozzetto S.p.A.
  • Crosslinker A is a blocked aliphatic isocyanate commercially available from Bayer MaterialScience AG.
  • Crosslinker B is a polyaziridine tri-functional crosslinker commercially available from Stahl Holdings b.v. of Waalwijk, Netherlands.
  • Polymer Particle Dispersion is a 45 wt% solids aqueous dispersion including a blend of polyethylene wax and polytetrafluoroethylene, commercially available from Shamrock Technologies, Inc. of Newark, New Jersey.
  • Textile articles were prepared to include a polymeric layer corresponding to polyurethane composition A and polyurethane composition B as set forth above in TABLE I, with Example 1 corresponding to textile articles including a polymeric layer prepared using polyurethane composition A and Example 2 corresponding to textile articles including a polymeric layer prepared using polyurethane composition B.
  • the respective polyurethane compositions were first prepared by mixing the latex and water. Additives A and B, the crosslinker, and the polymer particle dispersion were then added, with mixing conducted at a stirring rate of from about 500 to 800 rpm to form a polyurethane composition. Separately, a 5 wt% solution of coagulant (calcium nitrate) in water is prepared.
  • a size 10 nylon glove was provided, and the glove was heated to a temperature of about 90°C.
  • the glove was dipped into the coagulant solution for 1 second, followed by a drying period of about 100 seconds.
  • the glove was then dipped in the polyurethane composition for 1 second, followed by drying at an ambient temperature of about 70°C for about 20 minutes.
  • the glove was then washed and dried again at an ambient temperature of about 85 °C for about 30 minutes. Finally, the glove was cured at a temperature of about 130°C for about 10 minutes to form the polymeric layer.
  • Abrasion testing was then conducted on the polymeric layer of the gloves in accordance with EN 388 Abrasion Resistance testing.
  • samples of the gloves were taken from the same areas on the gloves, and the polymeric layer was rubbed backward and forwards over a standard abrasive material using a Martindale tester. The number of cycles completed before breakthrough occurs determines a glove score, with a score of 4 corresponding to 8000 cycles and being the highest score in accordance with EN 388.
  • EN 388 Abrasion Resistance results for the gloves is shown below in TABLE II for four different samples taken from different locations on the gloves.
  • Shore A hardness of the polymeric layer on the gloves was also tested. For Example 1, average shore A hardness was 24-25, and for Example 2, average shore A hardness was 28-29.
  • a comparative example of a textile article was prepared to include a polymeric layer corresponding to the comparative polyurethane composition of TABLE I.
  • the comparative polyurethane composition is identical to polyurethane composition A, but the comparative polyurethane composition does not include the polymer particle dispersion.
  • a textile article was prepared to include a polymeric layer having an unfoamed inner film and a foamed outer film, with the outer film corresponding to polyurethane composition C and the inner film corresponding to inner film composition as set forth above in TABLE IV below, wherein amounts are provided for weight % based on the total weight of the compositions and parts per hundred of solids in the composition (PHS):
  • the polyurethane composition C was prepared in the same manner as described above, but with the further addition of additives C and D along with additives A and B, the crosslinker, and the polymer particle dispersion.
  • the polyurethane composition C was further mechanically foamed for about 20 minutes prior to application.
  • the inner film composition was formed similar to the manner in which the polyurethane composition C was prepared.
  • a 5 wt% solution of coagulant (calcium nitrate) in water is prepared.
  • a size 10 nylon glove was provided, and the glove was dipped in inner film composition for 1 second followed by heating the glove to a temperature of about 90°C and drying the glove for about 10 minutes.
  • the glove was dipped into the coagulant solution for 1 second, followed by a drying period of about 90 seconds.
  • the glove was then dipped in the polyurethane composition C for 1 second, followed by drying at an ambient temperature of about 70°C for about 20 minutes.
  • the glove was then washed and dried again at an ambient temperature of about 85°C for about 30 minutes. Finally, the glove was cured at a temperature of about 130°C for about 10 minutes to form the outer film of the polymeric layer that includes the inner film and the outer film.
  • Abrasion testing was then conducted on the polymeric layer of the glove in accordance with EN 388 Abrasion Resistance testing, as described above.
  • EN 388 Abrasion Resistance results for the glove is shown below in TABLE V for four different samples taken from different locations on the glove.
  • Shore A hardness of the polymeric layer on the glove was also tested, and average shore A hardness was 25-26.

Abstract

Textile articles having a polymeric layer disposed thereon, such as polymer-coated gloves, and methods of forming the textile articles are provided herein. In an embodiment, a textile article includes a web of material and a polymeric layer disposed on the web of material. The polymeric layer includes a polymeric matrix that includes polyurethane and polymer particles disposed in the polymeric matrix. The polymer particles include a different composition from the polymeric matrix.

Description

TEXTILE ARTICLES INCLUDING A POLYMERIC LAYER AND METHODS OF
FORMING THE SAME
TECHNICAL FIELD
[0001] The technical field generally relates to textile articles and methods of forming the textile articles. More particularly, the technical field relates to textile articles that include a web of material and a polymeric layer disposed on the web of material, and methods of forming the textile articles with the polymeric layer disposed on the web of material.
BACKGROUND
[0002] Textile articles that include a web of material typically formed of woven or non- woven fibers, with a polymeric layer disposed on the web of material are known for a variety of applications. For example, articles of clothing such as work gloves, socks, outerwear, or shoe liners that include a fabric web of material may include a polymeric layer disposed on the fabric web of material to provide additional protection, grip, and/or durability to the articles of clothing. As another example, luggage articles may include a fabric web of material with a polymeric layer disposed on the fabric web to maximize durability.
[0003] Conventional polymeric layers disposed on the web of material may be formed from a variety of different polymers, and may be formed through a variety of different methods. Polyurethanes are one class of polymers that are included in the polymeric layers. However, conventional polymeric layers that are formed on the web of material and that include polyurethane are formed by dipping the web of material into a solvent-borne polyurethane dispersion that employs dimethyl formamide (DMF) as the solvent. The DMF-borne polyurethane dispersion generally produces polymeric layers that exhibit excellent abrasion resistance. There is a general desire to identify a suitable alternative to DMF-borne polyurethane dispersions. However, many alternatives to DMF-borne polyurethane dispersions exhibit significantly inferior abrasion resistance as compared to the DMF-borne polyurethane dispersions.
[0004] Accordingly, it is desirable to provide textile articles and methods of forming textile articles, where the textile articles include a web of material and a polymeric layer disposed on the web of material with the polymeric layer exhibiting excellent abrasion resistance. Furthermore, other desirable features and characteristics of the present invention will become apparent from the subsequent detailed description of the invention and the appended claims, taken in conjunction with the accompanying drawings and this background of the invention.
BRIEF SUMMARY
[0005] Textile articles having a polymeric layer disposed thereon, such as polymer- coated gloves, and methods of forming the textile articles are provided herein. In an embodiment, a textile article includes a web of material and a polymeric layer disposed on the web of material. The polymeric layer includes a polymeric matrix that includes polyurethane and polymer particles disposed in the polymeric matrix. The polymer particles include a different composition from the polymeric matrix.
[0006] In another embodiment, a polymer-coated glove includes a fabric web of material in a shape of the glove and a polymeric layer disposed on the fabric web of material. The polymeric layer includes a polymeric matrix that includes crosslinked polyurethane. The polymeric layer further includes a coagulant and polymer particles disposed in the polymeric matrix. The polymer particles include fluorine-containing polymer and have an average nominal dimension of from about 1 μιη to about 50 μιη. The polymer particles are present in an amount of from about 0.5 to about 20 percent by weight based on the total weight of the polymeric layer.
[0007] In another embodiment, a method of forming a textile article that has a polymeric layer disposed thereon includes providing an aqueous dispersion that includes a polymeric matrix precursor and polymer particles. The polymeric matrix precursor includes polyurethane, and the polymer particles include a different composition from the polymeric matrix precursor. The aqueous dispersion is applied on a web of material to form an intermediate article that has an intermediate coating disposed thereon. The intermediate coating is cured on the intermediate article to form the textile article having the polymeric layer disposed thereon. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The various embodiments will hereinafter be described in conjunction with the following drawing figures, wherein like numerals denote like elements, and wherein:
[0009] FIG. 1 is a perspective view of an exemplary embodiment of a textile article including a web of material and a polymeric layer disposed on the web of material; and
[0010] FIG. 2 is a cross-sectional view of the textile article of FIG. 1 showing the web of material and the polymeric layer disposed on the web of material.
DETAILED DESCRIPTION
[0011] The following detailed description is merely exemplary in nature and is not intended to limit the various embodiments or the application and uses thereof. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.
[0012] Textile articles that include a web of material and a polymeric layer disposed on the web of material, and methods of forming the textile articles, are provided herein. The textile article is not particularly limited and may be any article that includes a web of material and a polymeric layer disposed on the web of material. As referred to herein, a web of material is a woven or non-woven mat of fibers. The polymeric layer that is disposed on the web of material exhibits excellent abrasion resistance even when formed in the absence of dimethyl formamide (DMF) solvent. In particular, the polymeric layer includes a polymeric matrix that includes polyurethane and polymer particles disposed in the polymeric matrix, with the polymer particles having a different composition from the polymeric matrix. The presence of the polymer particles increases abrasion resistance of the polymeric layer as compared to polymeric layers that include polyurethane and that are free of the polymer particles, thereby accounting for performance trade-offs associated with elimination of DMF solvent during formation of the polymeric layer.
[0013] An exemplary embodiment of a textile article will now be described with reference to FIGS. 1 and 2. In an embodiment and as shown in FIG. 1, the textile article 10 is an article of clothing, such as a glove 10. However, in other embodiments and although not shown, the textile article may be a different article of clothing such as a sock, a shell of a jacket, or a shoe insert, or may be a non-clothing article such as a duffel bag, suitcase, or the like; a tent, a tarp, or any other type of article where a polymeric layer may be disposed on a web of material, i.e., a woven or non-woven mat of fibers, to provide durability and protection to the web of material.
[0014] Referring to FIGS. 1 and 2, the textile article 10 includes a web of material 12 and a polymeric layer 14 that is disposed the web of material 12. By "disposed on", it is meant that the polymeric layer 14 overlies the web of material 12 with optional intrusion of material of the polymeric layer 14 into the web of material 12 at an interface therebetween. In embodiments and as shown in FIG. 1, the web of material 12 is in a shape of the textile article 10, although it is to be appreciated that in other embodiments (not shown), the web of material may simply be a sheet of material with no particular shape, or may be used as part of the textile article. As set forth above, the web of material 12 is a woven or non- woven mat of fibers. The mat of materials may be a woven mat of fibers (e.g., conventional fabrics) or a non-woven mat of fibers (e.g., felt). Suitable fibers may be chosen from natural fibers such as cotton, leather, hemp, or the like; synthetic fibers such as rayon, polyester, or the like; or a combination of natural and synthetic fibers.
[0015] The polymeric layer 14, as referred to herein, is a layer of material that exhibits physical properties of a plastic and that contains at least 50 weight % of polymer compounds, based on the total weight of the polymeric layer 14. The polymeric layer 14 includes a polymeric matrix 16 and polymer particles 18 disposed in the polymeric matrix
16. The polymeric matrix 16, as referred to herein, is a continuous phase as viewed under
100 magnification. The polymeric matrix 16 includes polyurethane, i.e., any compound with repeating units connected through urethane linkages. The polyurethane may be crosslinked or uncrosslinked, with crosslinking established through urethane linkages or other types of bonds. Suitable polyurethanes are not particularly limited, and it is believed that the polymer particles 18 as described herein may increase abrasion resistance for a range of different polyurethanes, especially when the polymeric layer 14 is formed from aqueous polyurethane latex. Examples of suitable polyurethanes include aliphatic or aromatic polyether polyurethanes or polyester urethanes, or combinations thereof. In one embodiment, the polymeric matrix 16 includes crosslinked aliphatic polyester polyurethane.
Polyurethanes may be present in the polymeric matrix 16 in an amount of from 50 to 100 weight % based on the total weight of the polymeric matrix 16. It is to be appreciated that the polymeric matrix 16 may include a combination of different polyurethanes, and further include .
[0016] The polymer particles 18 are disposed in the polymeric matrix 16 and are distinguishable from the polymeric matrix 16 under 100 magnification. In particular, the polymer particles 18 are present as a discontinuous phase in the polymeric matrix 16 and are distinguishable from the polymeric matrix 16 on this basis. In this regard, the polymer particles 18 exhibit a defined boundary with the surrounding polymeric matrix 16 that is visibly perceptible under 100 magnification. In embodiments, the polymer particles 18 are dispersed throughout a volume of the polymeric matrix 16, i.e., the polymer particles 18 are present both at a surface 20 of the polymeric layer 14 and beneath the surface 20 of the polymeric layer 14.
[0017] The polymer particles 18 include a different composition from the polymeric matrix 16, meaning that the polymer particles 18 are chemically distinguishable from the polymeric matrix 16. In embodiments, the polymer particles 18 include a fluorine- containing polymer. Without being bound by any particular theory, it is believed that fluorine-containing polymers exhibit significantly reduced coefficient of friction as compared to other types of polymers, and the presence of at least some fluorine-containing polymer in the polymer particles 18 provides the polymeric layer 14 with an overall reduced coefficient of friction as compared to polymeric layers that do not include the polymer particles. With the reduced coefficient of friction, the polymeric layer 14 that includes the polymer particles 18 exhibits enhanced abrasion resistance as compared to polymeric layers that do not include the polymer particles.
[0018] Suitable fluorine-containing polymers include, but are not limited to, polyfluoroalkylene polymers such as polytetrafluoroethylene (PTFE); fluoropolymers based on vinylidene fluoride (VDF); vinyl ester of vinyl ethers such as poly(fluoroethylene-vinyl ether) (PFEVE); perfluorinated polyether (PFPE); and the like. The fluorine-containing polymers may also include copolymers of fluorine-containing monomers and non- fluorinated monomers. The fluorine-containing polymers may be included in the polymer particles 18 as the only polymer, or the polymer particles 18 may further include an additional polymer that is different from the fluorine-containing polymer, and the fluorine- containing polymer and the additional polymer may be present as a physical mixture in the polymer particles 18. For example, the additional polymer may include a polyalkylene polymer such as polyethylene or polypropylene. In embodiments, the fluorine-containing polymer is included in the polymer particles 18 in an amount of from about 0.5 to about 100 weight %, or such as from about 0.5 to about 20 weight %, based on the total weight of the polymer particles 18.
[0019] As set forth above, the polymer particles 18 are generally observable as a discontinuous phase in the polymeric layer 14 under 100 magnification. In embodiments, the polymer particles 18 have an average nominal dimension of from about 1 μιη to about 50 μιη, such as from about 6 to about 10 μιη, and it is believed that average nominal dimension of the polymer particles 18 within the aforementioned ranges provide maximized abrasion resistance to the polymeric layer 14. In some embodiments, the particles are spherical and the average nominal dimension is the particle's average nominal diameter but in other embodiments, the particle is not spherical and the dimension is the average nominal dimension of the particle. Amounts of the polymer particles 18 included in the polymeric layer 14 may also impact abrasion resistance of the polymeric layer 14. In embodiments, the polymer particles 18 are present in the polymeric layer 14 in an amount of from about 0.5 to about 20 weight % based on the total weight of the polymeric layer 14.
[0020] In addition to the polymer particles 18, the polymeric layer 14 may further include polymers in the polymeric matrix 16 that are different from polyurethanes, and may further include additional non-polymeric components that are indistinguishable within the continuous phase of the polymeric matrix 16 at 100 magnification. For example, the polymeric matrix 16 may include additional components such as, but not limited to, plasticizers, softening agents, pigments, thickeners, foam stabilizers, UV light stabilizers, and the like. In an embodiment, the polymeric layer 14 further includes a coagulant, which may be present under conditions where the polymeric layer 14 is formed from an aqueous polyurethane latex. The coagulant may be included in the polymeric layer 14 as a result of a manner in which the polymeric layer 14 is formed, e.g., the web of material 12 may first be dipped in a solution containing the coagulant before applying the aqueous polyurethane latex on the web of material 12 with the resulting polymeric layer 14 thereby incorporating the coagulant. Additional details regarding an exemplary method of forming the textile articles 10 are described in further detail below. Suitable coagulants are not particularly limited, and an example of suitable coagulant is calcium nitrate. [0021] As alluded to above, the polymeric layer 14 may be formed from an aqueous polyurethane latex, thereby providing an alternative to use of dimethyl formamide as well as other organic solvents during formation of the polymeric layer 14. In this regard, the polymeric layer 14 may be free from dimethyl formamide, and may further be free of organic solvents in general.
[0022] In embodiments, the polymeric layer 14 is in the form of an elastomeric film (i.e., no foaming is desired in the polymeric layer 14 although a small degree of cell formation may occur in the polymeric layer 14 as a result of real-world manufacturing). In other embodiments, the polymeric layer 14 is in the form of a foam having cells, and the polymeric layer 14 may be foamed through addition of conventional foaming agents and, optionally, foam stabilizers. Further, although not shown, the polymeric layer may include more than one discrete layer, such as an inner film and an outer film (not shown). In embodiments, the outer film may include the polymer particles to provide the desired abrasion resistance to the polymeric layer.
[0023] The polymeric layer 14 generally exhibits excellent abrasion resistance attributable to the presence of the polymer particles 18 therein, even when organic solvents such as dimethyl formamide are omitted during formation of the polymeric layer 14. In embodiments, the polymeric layer 14 exhibits an abrasion resistance of level 4 (which is the highest level 4) in accordance with EN388 abrasion testing. Hardness of the polymeric layer 14 may vary and may be adjusted based upon various factors, such as the type of crosslinker that is employed. In embodiments, the polymeric layer 14 has a Shore A hardness of 26 or less, such as 25 or less.
[0024] It is to be appreciated that methods of forming the textile article 10 as described above are not limited. However, an embodiment of an exemplary method of forming the textile article 10 that includes the web of material 12 having the polymeric layer 14 disposed thereon will now be described. In accordance with the exemplary method, an aqueous dispersion is provided that includes a polymeric matrix 16 precursor and the polymer particles 18. The polymer particles 18 are described in detail above. The polymeric matrix 16 precursor may include polyurethane, and the polymeric matrix 16 precursor may be in a form that is adapted for coating the web of material 12 before setting to form the polymeric layer 14 as described above. The polyurethane of the polymeric matrix 16 precursor may include reactive groups that are available for crosslinking with a crosslinker. The polymeric matrix 16 precursor may be an aqueous polyurethane latex, or may be a different form of a water-dispersible polyurethane such as a polyurethane pre-polymer. The aqueous polyurethane latex, as referred to herein, is an aqueous dispersion or emulsion of polyurethane-containing particles that are formed in the presence of water and, optionally, one or more dispersing or emulsifying agents (e.g., a surfactant, alkali-soluble polymer, or the like). Of course, the polyurethane-containing particles of the latex coalesce during formation of the polymeric layer 14 and, therefore, are not apparent as particles in the polymeric layer 14 under 100 magnification. An example of a suitable polymeric matrix 16 precursor is commercially available as Impranil® DL 1380 from Bayer MaterialScience AG of Leverkusen, Germany.
[0025] The aqueous dispersion may further include other optional components such as, but not limited to, a plasticizer, a pigment, a thickener, a crosslinker, or a combination thereof. The crosslinker may be blocked with an appropriate blocking agent to extend cure times. For example, in an embodiment, a suitable blocked crosslinker is a blocked- isocyanate crosslinker. In embodiments, low temperature crosslinkers can be used, such as those that react at a temperature of about 90°C or less. An example of a suitable low temperature crosslinker is a polyaziridine tri-functional crosslinker. In an embodiment, a coagulant solution is also provided that includes the coagulant dispersed in water.
[0026] The web of material 12 is provided and heated to a temperature of at least 60°C, such as about 90°C, prior to applying the aqueous dispersion on the web of material 12. After heating the web of material 12, the coagulant is applied on the web of material 12 prior to applying the aqueous polyurethane latex on the web of material 12. For example, the web of material 12 may be dipped in the coagulant solution, followed by drying. The aqueous dispersion is then applied on the web of material 12 to form an intermediate article that has an intermediate coating disposed on the intermediate article. In this embodiment, the intermediate coating includes the polyurethane matrix precursor and the coagulant. The intermediate coating is cured on the intermediate article, optionally after drying, to form the textile article 10 that has the polymeric layer 14 disposed thereon. The intermediate article may be cured at a temperature from about 60 to about 130°C. In embodiments, a low- temperature temperature crosslinker is employed, in which case the intermediate article may be cured at a temperature of about 90°C or less, such as from about 60 to about 90°C. [0027] In another embodiment, the polymeric layer 14 may be foamed. In this embodiment, a foam stabilizer and a foam reagent may be included in the aqueous dispersion, followed by mechanical foaming of the aqueous dispersion prior to applying the aqueous dispersion on the web of material 12. The foamed polymeric layer 14 may be formed in the same manner as described above. In yet another embodiment, the textile article 10 may be formed with the polymeric layer 14 including more than one discrete layer, such as an inner film and an outer film. In this embodiment, the discrete layers may be foamed or unfoamed, and at least the outer film includes the polymer particles 18 to enhance abrasion resistance.
[0028] The following Examples are intended to illustrate methods of forming textile articles in accordance with the instant application, and are not to be viewed as limiting.
EXAMPLES
[0029] Textile articles are prepared using compositions as set forth in TABLE I, with amounts provided for weight % based on the total weight of the compositions and parts per hundred of solids in the composition (PHS):
TABLE I
Figure imgf000010_0001
Latex A is 60 wt% solids aqueous dispersion including an aliphatic polyester polyurethane, commercially available from Bayer MaterialScience AG of Leverkusen, Germany. Additive A is a surface-passivated inorganic pigment commercially available from Clariant International Limited of Muttenz, Switzerland.
Additive B is a softening agent commercially available from Suzhou Fubin Chemical Co. Ltd. of Jiangsu, China.
Additive C is a foaming agent commercially available as Stokal STA from Giovanni Bozzetto S.p.A. of Bergamo, Italy.
Additive D is a foam stabilizer commercially available as Stokal SR from Giovanni Bozzetto S.p.A.
Crosslinker A is a blocked aliphatic isocyanate commercially available from Bayer MaterialScience AG.
Crosslinker B is a polyaziridine tri-functional crosslinker commercially available from Stahl Holdings b.v. of Waalwijk, Netherlands.
Polymer Particle Dispersion is a 45 wt% solids aqueous dispersion including a blend of polyethylene wax and polytetrafluoroethylene, commercially available from Shamrock Technologies, Inc. of Newark, New Jersey.
Examples 1 and 2
[0030] Textile articles were prepared to include a polymeric layer corresponding to polyurethane composition A and polyurethane composition B as set forth above in TABLE I, with Example 1 corresponding to textile articles including a polymeric layer prepared using polyurethane composition A and Example 2 corresponding to textile articles including a polymeric layer prepared using polyurethane composition B. The respective polyurethane compositions were first prepared by mixing the latex and water. Additives A and B, the crosslinker, and the polymer particle dispersion were then added, with mixing conducted at a stirring rate of from about 500 to 800 rpm to form a polyurethane composition. Separately, a 5 wt% solution of coagulant (calcium nitrate) in water is prepared.
[0031] A size 10 nylon glove was provided, and the glove was heated to a temperature of about 90°C. The glove was dipped into the coagulant solution for 1 second, followed by a drying period of about 100 seconds. The glove was then dipped in the polyurethane composition for 1 second, followed by drying at an ambient temperature of about 70°C for about 20 minutes. The glove was then washed and dried again at an ambient temperature of about 85 °C for about 30 minutes. Finally, the glove was cured at a temperature of about 130°C for about 10 minutes to form the polymeric layer.
[0032] Abrasion testing was then conducted on the polymeric layer of the gloves in accordance with EN 388 Abrasion Resistance testing. In particular, samples of the gloves were taken from the same areas on the gloves, and the polymeric layer was rubbed backward and forwards over a standard abrasive material using a Martindale tester. The number of cycles completed before breakthrough occurs determines a glove score, with a score of 4 corresponding to 8000 cycles and being the highest score in accordance with EN 388. EN 388 Abrasion Resistance results for the gloves is shown below in TABLE II for four different samples taken from different locations on the gloves.
TABLE II
Figure imgf000012_0001
[0033] Shore A hardness of the polymeric layer on the gloves was also tested. For Example 1, average shore A hardness was 24-25, and for Example 2, average shore A hardness was 28-29.
Comparative Example
[0034] A comparative example of a textile article was prepared to include a polymeric layer corresponding to the comparative polyurethane composition of TABLE I. The comparative polyurethane composition is identical to polyurethane composition A, but the comparative polyurethane composition does not include the polymer particle dispersion.
[0035] The polymeric layer was formed on the glove in the same manner as described above for Examples 1 and 2, and EN 388 Abrasion Resistance results for the glove is shown below in TABLE III for four different samples taken from different locations on the glove. TABLE III
Figure imgf000013_0001
[0036] Shore A hardness of the polymeric layer on the glove was also tested, and the average shore A hardness was 23-25.
Example 3
[0037] A textile article was prepared to include a polymeric layer having an unfoamed inner film and a foamed outer film, with the outer film corresponding to polyurethane composition C and the inner film corresponding to inner film composition as set forth above in TABLE IV below, wherein amounts are provided for weight % based on the total weight of the compositions and parts per hundred of solids in the composition (PHS):
TABLE IV
Figure imgf000013_0002
[0038] The polyurethane composition C was prepared in the same manner as described above, but with the further addition of additives C and D along with additives A and B, the crosslinker, and the polymer particle dispersion. The polyurethane composition C was further mechanically foamed for about 20 minutes prior to application. Separately, the inner film composition was formed similar to the manner in which the polyurethane composition C was prepared. Separately, a 5 wt% solution of coagulant (calcium nitrate) in water is prepared.
[0039] A size 10 nylon glove was provided, and the glove was dipped in inner film composition for 1 second followed by heating the glove to a temperature of about 90°C and drying the glove for about 10 minutes. The glove was dipped into the coagulant solution for 1 second, followed by a drying period of about 90 seconds. The glove was then dipped in the polyurethane composition C for 1 second, followed by drying at an ambient temperature of about 70°C for about 20 minutes. The glove was then washed and dried again at an ambient temperature of about 85°C for about 30 minutes. Finally, the glove was cured at a temperature of about 130°C for about 10 minutes to form the outer film of the polymeric layer that includes the inner film and the outer film.
[0040] Abrasion testing was then conducted on the polymeric layer of the glove in accordance with EN 388 Abrasion Resistance testing, as described above. EN 388 Abrasion Resistance results for the glove is shown below in TABLE V for four different samples taken from different locations on the glove.
TABLE V
Figure imgf000014_0001
[0041] Shore A hardness of the polymeric layer on the glove was also tested, and average shore A hardness was 25-26.
[0042] While at least one exemplary embodiment has been presented in the foregoing detailed description of the invention, it should be appreciated that a vast number of variations exist. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient road map for implementing an exemplary embodiment of the invention. It being understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope of the invention as set forth in the appended claims.

Claims

CLAIMS What is claimed is:
1. A textile article comprising:
a web of material;
a polymeric layer disposed on the web of material, wherein the polymeric layer comprises:
a polymeric matrix comprising polyurethane; and
polymer particles disposed in the polymeric matrix, wherein the polymer particles comprise a different composition from the polymeric matrix.
2. The textile article of claim 1, wherein the web of material is in a shape of the textile article.
3. The textile article of claim 1, wherein the web of material is chosen from a woven or a non-woven mat of fibers, wherein the fibers are chosen from natural fibers, synthetic fibers, or a combination thereof.
4. The textile article of claim 1, wherein the polymer particles are dispersed throughout a volume of the polymeric matrix.
5. The textile article of claim 1, wherein the polymer particles have an average nominal dimension of from about 1 μιη to about 50 μιη.
6. The textile article of claim 1 , wherein the polyurethane is crosslinked.
7. The textile article of claim 1, wherein the polymeric layer further comprises a coagulant.
8. The textile article of claim 1, wherein the polymer particles comprise a fluorine-containing polymer.
9. The textile article of claim 8, wherein the polymer particles further comprise an additional polymer different from the fluorine-containing polymer.
10. The textile article of claim 9, wherein the fluorine-containing polymer and the additional polymer are present as a physical mixture in the polymer particles.
11. The textile article of claim 1, wherein the polymer particles are present in the polymeric layer in an amount of 0.5 to 20 weight % based on the total weight of the polymeric layer.
12. The textile article of claim 1, wherein the polymeric layer is free from dimethyl formamide.
13. A polymer-coated glove comprising:
a fabric web of material in a shape of a glove;
a polymeric layer disposed on the fabric web of material, wherein the polymeric layer comprises:
a polymeric matrix comprising crosslinked polyurethane;
a coagulant; and
polymer particles disposed in the polymeric matrix, wherein the polymer particles comprise fluorine-containing polymer and have an average nominal dimension of from about 1 μιη to about 50 μιη, and wherein the polymer particles are present in an amount of from about 0.5 to about 20 percent by weight based on the total weight of the polymeric layer.
14. A method of forming a textile article having a polymeric layer disposed thereon, wherein the method comprises:
providing an aqueous dispersion comprising:
a polymeric matrix precursor comprising polyurethane; and
polymer particles comprising a different composition from the polymeric matrix precursor;
applying the aqueous dispersion on a web of material to form an intermediate article having an intermediate coating disposed thereon; and
curing the intermediate coating on the intermediate article to form the textile article having the polymeric layer disposed thereon.
15. The method of claim 14, wherein providing the aqueous dispersion comprises providing an aqueous polyurethane latex with the polymer particles disposed in the aqueous polyurethane latex.
16. The method of claim 15, wherein providing the aqueous polyurethane latex further comprises providing a blocked-isocyanate crosslinker disposed in the aqueous polyurethane latex.
17. The method of claim 15, further comprises applying a coagulant on the web of material prior to applying the aqueous polyurethane latex on the web of material.
18. The method of claim 14, further comprising heating the web of material to a temperature of at least 60°C prior to applying the aqueous dispersion on the web of material.
19. The method of claim 14, wherein curing the intermediate coating comprises curing the intermediate article at a temperature of from 60 to 130°C.
20. The method of claim 14, wherein providing the aqueous dispersion comprises providing the aqueous dispersion free of dimethyl formamide.
PCT/US2014/031331 2014-03-20 2014-03-20 Textile articles including a polymeric layer and methods of forming the same WO2015142340A1 (en)

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