US3402071A - Process to render leathers and furs water-resistant - Google Patents

Process to render leathers and furs water-resistant Download PDF

Info

Publication number
US3402071A
US3402071A US380030A US38003064A US3402071A US 3402071 A US3402071 A US 3402071A US 380030 A US380030 A US 380030A US 38003064 A US38003064 A US 38003064A US 3402071 A US3402071 A US 3402071A
Authority
US
United States
Prior art keywords
leathers
ethylene oxide
water
leather
agents
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
US380030A
Other languages
English (en)
Inventor
Heyden Rudi
Plapper Jurgen
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.)
Dr Th Boehme KG Chemie Fabrik GmbH and Co
Original Assignee
Dr Th Boehme KG Chemie Fabrik GmbH and 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 Dr Th Boehme KG Chemie Fabrik GmbH and Co filed Critical Dr Th Boehme KG Chemie Fabrik GmbH and Co
Application granted granted Critical
Publication of US3402071A publication Critical patent/US3402071A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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.]

Definitions

  • the leathers, impregnated with the ethylene oxide addition products of the invention distinguish themselves by slight absorptive capacity and very slight permeability under drastic testing conditions, so that they are favorably suited for the impregnation of leathers subjected to heavy mechanical use, in particular sole leathers, shoe upper leather or also leathers for technical purposes.
  • the products, usable for the impregnation, are well known and can be prepared in the conventional way. They are preferably derived from fatty alcohols, fatty acids or fatty alcohols obtainable from the latter, all of which are derived from natural fats, oils and waxes.
  • fatty acids decylenic acid, undecylenic acid, dodecylenic acid, oleic acid, erucic acid, linoleic acid and linolenic acid.
  • fatty alcohols those having a chain length of 10 to 26 carbon atoms, for example, decenol, tetradecenol and oleyl alcohol are suitable.
  • Examples for the derivatives of the unsaturated fatty acids or fatty alcohols used according to the invention are therefore addition products of 1 to 4 mols of ethylene oxide per 1 mol of the named fatty alcohols and fatty acids.
  • a considerably improved effect can be attributed to the derivatives of the fatty alcohols.
  • the ethylene oxide addition products of fatty alcohols and fatty acids also analogous addition products of other compounds with unsaturated fatty radicals containing exchangeable hydrogen atoms bonded to nitrogen or sulfur, may be used, i.e. addition products of 1 to 4 mols of ethylene oxide for unsaturated fatty amines, fatty acid amides, unsaturated organic sulfamides, fatty mercaptans, etc.
  • organic solvents in which the impregnation agents are used in dissolved condition, the following are suitable: trichloroethylene, perchloroethylene, benzine toluene, isopropanol or other low-molecular alcohols, methyl-ethylketone, cyclohexanone, acetic acid butylester.
  • all types of leathers or even furs can be impregnated, for example alum-, chrome-, or combined chrome tanned leathers, and also leathers tanned with synthetic or vegetable tanning agents.
  • the treatment of the leathers is accomplished in the usual manner by brushing on, soaking, spraying or with the aid of application machines. For this purpose 5 to 40%, preferably 10 to 20% solutions in organic solvents are used. For the treatment process generally 2 to 25%, preferably 5 to 10% of the ethylene oxide addition products of the invention, based on the weight of the leather are required. Only benzine or alcohols are suitable as solvents for the treatment of impregnated upper leathers whose body colors are sensitive to chlorohydrocarbons. The impregnation of vegetable tanned sole leathers can be accomplished in a solution of trichloroethylene or perchloroethylene. Due to the non-inflammability of these solvents, considerable advantages result for the production of sole leathers in view of the usual working conditions.
  • the agents used according to the invention can be employed favorably in combination with citric acid esters or citric acid amides which still have in the molecule at least one free carboxyl group and of which at least one of the esterification or amidation components contains one unsaturated, high-molecular, aliphatic hydrocarbon radical.
  • citric acid esters or citric acid amides which still have in the molecule at least one free carboxyl group and of which at least one of the esterification or amidation components contains one unsaturated, high-molecular, aliphatic hydrocarbon radical.
  • solvent mixtures containing compounds of a higher boiling point such as higher boiling benzine, toluene or xylene are suitable.
  • Solvents with a low boiling point are not suitable in this case as they evaporate too fast during the spraying so that the impregnation agents precipitate mainly on the leather surface.
  • the distribution of the impregnating agents in the leather may be adjusted by changing the percentage of solvents with a higher boiling point.
  • the treated leathers exhibit under static and dynamic conditions a high water-resistance and a very low absorptive capacity.
  • the leathers In contrast to the frequently observed hardening of the leather, which occurs easily with the use of impregnation agents, the leathers remain soft and pliable and they are not detrimentally affected in regard to their coloring and finishing. It is possible to impregnate finished upper leathers of any desired tanning process as well as sole leathers. This impregnation method is of particular significance for modern, not fatted water-proof leathers.
  • the impregnation effect can be further intensified or be adjusted to special demands, in that in addition to the ethylene oxide addition products of the invention or their mixtures with the above named citric acid esters or the citric acid amides, also condensation products of alcoholates of multivalent metals, especially of aluminum, and of acid high-molecular derivatives of phosphoric acid, in particular of acid phosphoric acid esters of highmolecular, organic hydroxyl compounds may be used.
  • the impregnation can result from an organic solution together with these agents, or consecutively in any desired sequence.
  • a further improvement, especially in regard to the water-repellent effect on the leather surface, can be achieved when the agents of the invention or their mixtures with the other above mentioned impregnating agents are used together with silicone oils and/ or hard Waxes.
  • silicone oils for this purpose are those products commercially available under this name, and natural or synthetic wax products may be used as hard waxes, e.g. paraflin-, carnauba-, montan wax or esteror carbonamide waxes.
  • the various components can be dissolved Without difficulty in the organic solvents or in the mixtures thereof.
  • Example I 3 samples of a conventional dressed, water-proof leather were soaked for a period of minutes in benzine solutions of the impregnation agents according to the invention, listed below under (a) and (b) and (c).
  • the table shows, besides the special suitability of the reaction product of oleylalcohol with small quantities of ethylene oxide, that a product with 5 mol of ethylene oxide shows at the least no effect, if not a deterioration.
  • a method of rendering leather and furs water resistant which comprises impregnating leather and fur skins with a solution containing 5 to 40% by weight of an addition product of 1 to 4 moles of ethylene oxide and 1 mole of a compound selected from the group consisting of unsaturated fatty alcohols of 10 to 26' carbon atoms and unsaturated fatty acids of 10 to 22 carbon atoms in an inert organic solvent, the amount of solution used being 2 to 25% by weight, based on the material being impregnated, of the addition product.
  • composition also contains a material selected from the group consisting of silicone oils and hard waxes.
  • composition also contains a monoester of citric acid and oleyl alcohol.

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)
US380030A 1963-08-08 1964-07-02 Process to render leathers and furs water-resistant Expired - Lifetime US3402071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB73039A DE1178545B (de) 1963-08-08 1963-08-08 Verfahren zum Wasserfestmaschen von Leder oder Pelzen

Publications (1)

Publication Number Publication Date
US3402071A true US3402071A (en) 1968-09-17

Family

ID=6977696

Family Applications (1)

Application Number Title Priority Date Filing Date
US380030A Expired - Lifetime US3402071A (en) 1963-08-08 1964-07-02 Process to render leathers and furs water-resistant

Country Status (4)

Country Link
US (1) US3402071A (de)
CH (1) CH428074A (de)
DE (1) DE1178545B (de)
GB (1) GB1040534A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960481A (en) * 1972-09-27 1976-06-01 Thermanil Chemical Company, Incorporated Process for tanning leather
US4309176A (en) * 1979-10-01 1982-01-05 Henkel Kommanditgesellschaft Auf Aktien Process for the oiling and impregnation of leather and pelts
US20040232376A1 (en) * 2002-10-28 2004-11-25 Martin Kleban Chromium-free, waterproof leather

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346890A (en) * 1979-01-25 1982-08-31 Bernard Kaminstein Leather grip

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799599A (en) * 1957-07-16 Lustered fur hairs and method for
US2968580A (en) * 1958-06-25 1961-01-17 Bohme Fettchemie Gmbh Process for increasing the waterresistance of leather
US3010780A (en) * 1957-03-30 1961-11-28 Bohme Fettchemie Gmbh Method of making leather water-repellent
US3048265A (en) * 1961-03-29 1962-08-07 Union Carbide Corp Fog resistant polyolefin films
US3106478A (en) * 1959-05-14 1963-10-08 Bohme Fettchemie Gmbh Impregnation of leather

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799599A (en) * 1957-07-16 Lustered fur hairs and method for
US3010780A (en) * 1957-03-30 1961-11-28 Bohme Fettchemie Gmbh Method of making leather water-repellent
US2968580A (en) * 1958-06-25 1961-01-17 Bohme Fettchemie Gmbh Process for increasing the waterresistance of leather
US3106478A (en) * 1959-05-14 1963-10-08 Bohme Fettchemie Gmbh Impregnation of leather
US3048265A (en) * 1961-03-29 1962-08-07 Union Carbide Corp Fog resistant polyolefin films

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960481A (en) * 1972-09-27 1976-06-01 Thermanil Chemical Company, Incorporated Process for tanning leather
US4309176A (en) * 1979-10-01 1982-01-05 Henkel Kommanditgesellschaft Auf Aktien Process for the oiling and impregnation of leather and pelts
US20040232376A1 (en) * 2002-10-28 2004-11-25 Martin Kleban Chromium-free, waterproof leather
US7060363B2 (en) 2002-10-28 2006-06-13 Bayer Aktiengesellschaft Chromium-free, waterproof leather
US20060151738A1 (en) * 2002-10-28 2006-07-13 Martin Kleban Chromium-free, waterproof leather
US7208016B2 (en) 2002-10-28 2007-04-24 Lanxess Deutschland Gmbh Chromium-free, waterproof leather

Also Published As

Publication number Publication date
GB1040534A (en) 1966-08-24
DE1178545B (de) 1964-09-24
CH428074A (de) 1967-01-15

Similar Documents

Publication Publication Date Title
US6525127B1 (en) Alkylated fluorochemical oligomers and use thereof in the treatment of fibrous substrates
US4755187A (en) Method for producing waterproof leather
US4791167A (en) Autoxidizable fluorocarbon polymer compositions and methods
US3010780A (en) Method of making leather water-repellent
US3402071A (en) Process to render leathers and furs water-resistant
US3485573A (en) Fat liquoring agent consisting of an epoxy compound and an acid containing ester
US3668124A (en) Composition and method for treating dry-cleanable soil-resistant leathers
US5308511A (en) Solvent-based water- and oil-repellent treating agent
US3922143A (en) Polycarbodiimide treatments
JPH07508784A (ja) 新規な革オイリング製剤およびその使用（２）
EP0994195A2 (de) Verfahren um chromgegerbte Rinderhäute wasserbeständig zu machen
US2824816A (en) Method for treating leather
EP0140525B1 (de) Behandlung von Leder
US3661631A (en) Method for imparting water- and oil-repellent properties to leather and leather so treated
US3019133A (en) Process for waterproofing leather
US2523326A (en) Tanning with organic isocyanates in a nonaqueous medium
US3784400A (en) Method of preparing dry-cleanable soil-resistant leathers
US4309176A (en) Process for the oiling and impregnation of leather and pelts
US2772988A (en) Method of waterproofing leather
US3442696A (en) Water resistant leathers and fur skins
US2968580A (en) Process for increasing the waterresistance of leather
US2964425A (en) Waterproofing of leathers
US3038818A (en) Method of producing leather with improved water resistance and article resulting therefrom
US2402776A (en) Preparation of water-repellent textiles
JP2024035579A (ja) 撥水剤組成物および撥水剤処理物