GB994730A - Treatment of leather - Google Patents

Treatment of leather

Info

Publication number
GB994730A
GB994730A GB3350663A GB3350663A GB994730A GB 994730 A GB994730 A GB 994730A GB 3350663 A GB3350663 A GB 3350663A GB 3350663 A GB3350663 A GB 3350663A GB 994730 A GB994730 A GB 994730A
Authority
GB
United Kingdom
Prior art keywords
leather
polymer
acrylate
ethyl
methyl
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
Application number
GB3350663A
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.)
Rohm and Haas Co
Original Assignee
Rohm and Haas Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rohm and Haas Co filed Critical Rohm and Haas Co
Publication of GB994730A publication Critical patent/GB994730A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • 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
    • Y10T428/4935—Impregnated naturally solid product [e.g., leather, stone, etc.]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

An aqueous dispersion is made which contains a graft polymer of butyl acrylate and methacrylic acid on a substrate copolymer of vinylidene chloride, butyl acrylate and ethyl acrylate.ALSO:In improving the break and resistance to abrasion of dry, fully tanned, fat-liquored leather, the leather is impregnated, on one side only, with an aqueous dispersion, having a pH value between 2 and 6.5, containing between 0.5% and 8.0% by weight, of a surface-active agent and between 5% and 20% of a dispersed, water-insoluble linear addition polymer, e.g. a homopolymer or a copolymer, having a Ti value not exceeding 30 DEG C. The particles of the dispersed polymer have a surface-average radius between 250 and 1300 Angstrom units and impregnation is effected so that at least 90% by weight of the deposited polymer is distributed through at least 15%, but not more than 40%, of the thickness of the leather. The dispersion may be applied, as by repeated swabbing, to the grain side of the leather to impregnate it through the corium minor to its junction with the corium major. The dispersion may be applied, as by spraying, to the flesh side of a shearling to impregnate it through the corium major to its junction with the corium minor. The leather may be split leather. The polymer may be a polymer of monoethylenically unsaturated monomer molecules, such as those of esters obtained by reacting acrylic or methacrylic acid with one or more than one saturated aliphatic or cycloaliphatic monohydric alcohol having 1-18 carbon atoms per molecule. The polymer may be a copolymer containing 0.5-4.0% by weight of acrylic, methacrylic or itaconic acid and 99.5-96.0% of (a) ethyl acrylate, (b) methyl acrylate and 2-ethylhexyl acrylate, (c) ethyl acrylate and n-butyl methacrylate, (d) n-butyl acrylate, (e) ethyl acrylate and vinylidene chloride, or (f) ethyl acrylate and methyl methacrylate. Suitable anionic, non-ionic and cationic surface-active agents are specified. In order to accelerate impregnation, the aqueous dispersion may contain 0.5-35% by weight of ethyl, methyl, isopropyl or tertiary-butyl alcohol, acetone or methyl ethyl ketone, dioxane or diethyl ether, ethyl or methyl acetate, diethylene glycol or its monoethyl or monomethyl ether. After being impregnated, the leather may be hung and dried for 3 hours in a slowly moving current of dry air at 55 DEG C. The dried, impregnated leather may be plated with a stndblasted plate in a press at a temperature of 150 DEG F. and a pressure of 2,500 p.s.i. The resulting leather may be finished with one or more than one coating of nitrocellulose lacquer or a vinyl or acrylic polymer.
GB3350663A 1962-09-05 1963-08-23 Treatment of leather Expired GB994730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22143962 US3269858A (en) 1962-09-05 1962-09-05 Process for treating leather

Publications (1)

Publication Number Publication Date
GB994730A true GB994730A (en) 1965-06-10

Family

ID=22827839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3350663A Expired GB994730A (en) 1962-09-05 1963-08-23 Treatment of leather

Country Status (3)

Country Link
US (1) US3269858A (en)
ES (1) ES291029A1 (en)
GB (1) GB994730A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342797A1 (en) * 2002-03-05 2003-09-10 Rohm And Haas Company Composition and method for preparing leather

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408221A (en) * 1964-11-23 1968-10-29 United Shoe Machinery Corp Finished leather and methods of making the same
US3425075A (en) * 1965-06-24 1969-02-04 Alan E Murray Method of making leather footwear
JPS50136315A (en) * 1974-04-17 1975-10-29
DE2843780A1 (en) * 1978-10-06 1980-04-17 Bayer Ag POLYMER DISPERSIONS FOR TREATING LEATHER
DE2917376A1 (en) * 1979-04-28 1980-11-13 Roehm Gmbh ENZYMATIC PROCESS FOR HAIR PREPARATION AND SIMULTANEOUS DIGESTION

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103447A (en) * 1963-09-10 Leather and method for producing it
US2126321A (en) * 1933-08-28 1938-08-09 Freudenberg & Co G M B H Process for finishing leather articles
US2204520A (en) * 1937-01-06 1940-06-11 Rohm & Haas Leather finishing
US2744836A (en) * 1951-07-11 1956-05-08 Basf Ag Process for coating leather
US2828222A (en) * 1955-03-21 1958-03-25 Rohm & Haas Method of coating leather with polymers containing units of acrylyl or methacrylyl dicyandiamide and the resulting article
US2828220A (en) * 1955-03-21 1958-03-25 Rohm & Haas Method of coating leather with polymers containing hydroxyl groups and the resulting article
US2865877A (en) * 1955-09-26 1958-12-23 Rohm & Haas Coating compositions comprising aqueous dispersions of polymer salts and alkylphenolethylene oxide condensates and articles coated therewith
US2923646A (en) * 1957-12-12 1960-02-02 Rohm & Haas Release-coatings, film- and sheetcasting bases for substrates
US3048496A (en) * 1959-12-09 1962-08-07 Rohm & Haas Finished leathers having coatings of a polymer of 55-80 percent vinylidene chloride and 20-45 percent (c-c4)-alkyl acrylate, and production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342797A1 (en) * 2002-03-05 2003-09-10 Rohm And Haas Company Composition and method for preparing leather

Also Published As

Publication number Publication date
ES291029A1 (en) 1963-12-16
US3269858A (en) 1966-08-30

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