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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
  • D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
• • 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
  • D06M13/12—Aldehydes; Ketones
  • D06M13/127—Mono-aldehydes, e.g. formaldehyde; Monoketones
• • 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
  • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
  • D06M23/10—Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof
• • 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
  • Y10T442/2164—Coating or impregnation specified as water repellent
  • Y10T442/2172—Also specified as oil repellent
• • 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
  • Y10T442/2164—Coating or impregnation specified as water repellent
  • Y10T442/2189—Fluorocarbon containing

Definitions

• the present invention relates to a method for treating textile materials with a fluorocarbon resin, designed for application from aqueous systems, comprising precipitating from an aqueous emulsion or suspension containing the fluorocarbon resin, the resin by adding a ketone, such as acetone; separating the resin from the supernatant liquid; suspending or dissolving the resin in a chlorinated solvent; applying the so-prepared suspension or solution to a textile material; and, drying the fabric so as to maintain the organic fluorocarbon resin on the fabric to impart oil and water repellency.
• a ketone such as acetone
• a fluorocarbon such as described in US. Patents 2,841,573; 3,147,- 065; 3,147,066; 3,188,340; 3,198,754; 3,248,260; 3,256,- 230; 3,256,231; and 3,282,905; for example, in emulsified or dispersed systems as commercially available, is mixed with a sufiicient amount of a ketone, such as acetone, to precipitate the fluorocarbon resin.
• a ketone such as acetone
• the fluorocarbons are generally available in aqueous systems as emulsions or dispersions of the following composition:
• test specimen should be conditioned for a minimum of four hours at 7012" F. (21:1 C.) ad 65i2% RH prior to testing.
• test liquid AATCC Oil Repellency Rating No, l
• a small drop approximately V in. (5 mm.) diameter or 0.05 ml. volume
• the dropping bottle pipette on the test specimen in several locations. Observe the drop for 30 seconds, from approximately a 45 angle.
• AATCC Oil Repellency Rating of a fabric is the highest-numbered test liquid which will not Wet the fabric within a period of 30 seconds. Wetting of the fabric is normally evidenced by a darkening of the fabric at the liquid-fabric interface. On black or dark shades, wetting can be detected by loss of sparkle within the drop.
• Standard Spray Test (Federal Specification CCC-T- 191b, Method 5526; AATCC Standard Test Method 22-1952).
• Drops of fluid hydrocarbons of varying surface tension are placed, without impact, on the fabric surface and the extent of surface wetting is determined visually.
• the oil repellency rating numbers were chosen to correspond with the AATCC Standard Spray Ratings which were in use prior to AATCC 118-1967(t) for testing water repellent finishes.
• the Nujol-heptane proportions for each rating were selected so as to give oily stain resistance somewhat comparable to the water-borne stain resistance corresponding to each of the Standard Spray Test Ratings.
• EXAMPLE 1 Two liters of an aqueous emulsion of a commercial stain repellent containing ca. 28% by weight of an organic fluorocarbon resin (analytically determined to be predominantly 1,1,2 trichloro 1,2,2 trifluoro-ethane), 8% ethylene glycol, 12% acetone, and the balance water, was mixed with 2 liters of acetone. An off-white pricipitate formed, was allowed to settle, the supernatant liquor decanted and the precipitate taken up in sufficient stabilized 1,1,1-trichloroethane to yield a 28% solids solution.
• an organic fluorocarbon resin analytically determined to be predominantly 1,1,2 trichloro 1,2,2 trifluoro-ethane
• This solution was further diluted with 1,1,l-trichloroethane to provide a 4.3% solution of fluorocarbon resin concentrate in 1,1,1-trichloroethane, and employed to treat a 14 ounce wool fabric, a tricot and an 11 ounce rayon-acetate blend fabric by spraying the solution onto the fabric under a pressure of 12 p.s.i. while moving the fabric through the spray zone at a rate of 22 yards per minute.
• the employment of a 4.3% solution of the concentrate will provide a deposition of 0.3 percent solids by weight of fabric.
• the so-treated fabrics were dried. In this manner, the major portion of the chlorinated hydrocarbon solvent was removed leaving the fluorocarbon resin on the fabric.
• the standard test for oil and stain repellancy was run. The face of each fabric treated was found to have an oil repellency rating of 5. AATCC 118-1966T.
• EXAMPLE 2 In a similar manner as set forth in Example 1, 3 gallons of solution were prepared. A 14-16 ounce upholstery fabric was treated with the solution by spraying the solution onto the fabric from 15 nozzles under 25 p.s.i. pressure at a line speed of 13 yds/min, to impart a calculated 0.3% solids on fabric. The so-sprayed fabric was dried, then tested for oil repellency. The face of the fabric exhibited a rating of on the oil test.
• EXAMPLE 3 In order to compare the results obtained by the technique of the present commercial solvent based solution treating agent containing fluorocarbon in 1,1,l-trichloroethane and stabilizers was diluted to a concentration to provide a calculated 0.3% fluorocarbon solids deposition on the fabric when applied under a controlled condition. In the instant case, the solution was sprayed onto the same fabric (as in Example 2) at yds./min. under 15 p.s.i. pressure from 15 nozzles. The fabric after drying rated 5 on oil repellency.
• Fabric weight Rating fabric face 1 1 Oil repellency test.

Landscapes

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

Applications Claiming Priority (1)

Publications (1)

Family

ID=24773783

Family Applications (1)

Country Status (6)

Cited By (4)

Citations (2)

• 1967
  • 1967-12-15 US US3540923D patent/US3540923A/en not_active Expired - Lifetime
• 1968
  • 1968-10-29 NL NL6815431A patent/NL6815431A/xx unknown
  • 1968-11-05 DE DE19681807046 patent/DE1807046A1/de active Pending
  • 1968-11-05 GB GB1239238D patent/GB1239238A/en not_active Expired
  • 1968-11-06 FR FR1594745D patent/FR1594745A/fr not_active Expired
  • 1968-11-07 BE BE723522D patent/BE723522A/xx unknown

Patent Citations (2)

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