DE1023855B - Process for stiffening leather and leather substitutes - Google Patents
Process for stiffening leather and leather substitutesInfo
- Publication number
- DE1023855B DE1023855B DER14494A DER0014494A DE1023855B DE 1023855 B DE1023855 B DE 1023855B DE R14494 A DER14494 A DE R14494A DE R0014494 A DER0014494 A DE R0014494A DE 1023855 B DE1023855 B DE 1023855B
- Authority
- DE
- Germany
- Prior art keywords
- precondensates
- leather
- thiourea
- urea
- melamine
- 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.)
- Pending
Links
- 239000010985 leather Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 6
- 239000002649 leather substitute Substances 0.000 title claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 21
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 14
- 229920000877 Melamine resin Polymers 0.000 claims description 7
- 239000004202 carbamide Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000004014 plasticizer Substances 0.000 claims description 3
- 239000004848 polyfunctional curative Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 claims 1
- 239000000243 solution Substances 0.000 description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/08—Heel stiffeners; Toe stiffeners
- A43B23/16—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
-
- 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
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
Für die Herstellung billigen Schuhwerkes bemüht sich die Schuhindustrie bereits seit Jahrzehnten, an Stelle der relativ teuren Steifkappenstoffe und Werkstoffkappen flüssige Produkte einzusetzen, die auf das Leder od. dgl. aufgebracht werden und eine ausreichende Versteifung bewirken sowie die durch den Leisten gegebene Form fixieren.For decades the shoe industry has been trying to produce cheap footwear instead of the Use relatively expensive stiff cap materials and material caps liquid products that od on the leather. are applied and cause sufficient stiffening as well as the shape given by the strips fix.
Bekannt sind die sogenannten .«flüssigen Kappensteifem-, die auf Celluloid- und Kunststoffbasis unter Verwendung organischer Lösungsmittel hergestellt werden. Neben der Feuergefährlichkeit besteht durch den Gehalt an organischen Lösungsmitteln die Gefahr des Durchschlagens zur Narbenseite des Leders nach dem Auftragen, welches stets Färb- und Lackschädigungen zur Folge hat und daher den Einsatz in die Praxis meistens unmöglich macht.Known are the so-called "liquid cap stiffeners, which are made on a celluloid and plastic basis using organic solvents. In addition to the fire hazard, there is a risk of the organic solvent content Striking through to the grain side of the leather after application, which always damages the color and paintwork and therefore usually makes its use in practice impossible.
Durch die Erfindung können diese Nachteile dadurch behoben werden, daß anstatt der oben angeführten bekannten Produkte wäßrige Lösungen von Vorkondensaten der Harnstoff-, Thioharnstoff- oder Melamin-Formaldehyd-Harze in Kombination mit wäßrigen Polymerisatkunstharzdispersionen angewendet werden. Das Auskondensieren der Vorkondensate erfolgt mit bekannten Härtungsmitteln. Zur Erhöhung der Elastizität und Feuchtigkeitsbeständigkeit setzt man den Vorkondensaten der Harnstoff-, Thioharnstoff- oder Melamin-Formaldehyd-Harze wäßrige Kunstharzdispersionen auf Polyvinylchlorid-, Polyacrylsäureester- oder Polystyrolbasis usw. in Anteilen von 5 bis 40% zu. Zur Erzielung einer guten Benetzbarkeit des Leders, die das Eindringen der Harzteilchen in die Lederfasern begünstigt, wird entweder die Harzlösung oder die Lösung des Härtungsmittels mit einem gut wirkenden Netzmittel versetzt. The invention eliminates these disadvantages in that instead of the above-mentioned known Products: aqueous solutions of precondensates of urea, thiourea or melamine-formaldehyde resins can be used in combination with aqueous polymer synthetic resin dispersions. The condensation the precondensates are carried out with known hardening agents. To increase elasticity and The precondensates of urea, thiourea or melamine-formaldehyde resins are used for moisture resistance aqueous synthetic resin dispersions based on polyvinyl chloride, polyacrylic acid ester or polystyrene etc. in proportions of 5 to 40%. To achieve good wettability of the leather, which prevents the penetration of the Resin particles favored in the leather fibers, either the resin solution or the solution of the hardening agent is mixed with a well-acting wetting agent.
Um die Viskosität einer Harzlösung niedrigen Kondensationsgrades bzw. geringen Festkörpergehaltes und dadurch bedingter geringer Viskosität zu erhöhen, ist es möglich, der Harzlösung Füllstoffe, beispielsweise Kaolin oder Kieselkreide, beizufügen. Bei Harzlösungen mit höherem Kondensationsgrad bzw. höherem Festkörpergehalt und dadurch bedingter höherer Viskosität können zur Einstellung eines gewünschten niederen Viskositätsgrades wasserlösliche Weichmacher, beispielsweise Glycerin oder Sorbit, Verwendung finden.About the viscosity of a resin solution with a low degree of condensation or low solids content and thereby Due to the low viscosity, it is possible to add fillers, for example kaolin, to the resin solution or pebble chalk to be attached. For resin solutions with a higher degree of condensation or a higher solid content and the resulting higher viscosity, water-soluble plasticizers, for example glycerol, can be used to set a desired low degree of viscosity or sorbitol, can be used.
Zwecks Beschleunigung der Aushärtung der Vorkondensate der Harnstoff-, Thioharnstoff- oder Melamin-Formaldehyd-Harze durch üblicherweise verwendete Härtungsmittel, wie Ammoniumchlorid oder Ammoniumnitrat, können an sich bekannte Kondensationsbeschleuniger, beispielsweise Salzsäure, Ameisensäure, Essigsäure oder Maleinsäure, den Härtungsmitteln zugesetzt werden.For the purpose of accelerating the hardening of the precondensates of the urea, thiourea or melamine-formaldehyde resins by commonly used hardening agents such as ammonium chloride or ammonium nitrate, can condensation accelerators known per se, for example hydrochloric acid, formic acid, acetic acid or Maleic acid to which hardeners are added.
Das zugeschnittene Lederstück od. dgl. wird zunächst mit einer Lösung, bestehend aus 70 Teilen 70%iger Form-Verfahren
zur Versteifung von Leder
und LederaustauschstoffenThe cut piece of leather or the like is first treated with a solution consisting of 70 parts of a 70% form process for stiffening leather
and leather substitutes
Anmelder:Applicant:
Rhenoflex G.m.b.H.,Rhenoflex G.m.b.H.,
Fabrik chemisch-technischer Erzeugnisse,Chemical and technical products factory,
Ludwigshafen/Rhein, Giulinistr. 2Ludwigshafen / Rhine, Giulinistr. 2
Robert Martens, Ludwigshafen/Rhein-Mundenheim,
ist als Erfinder genannt wordenRobert Martens, Ludwigshafen / Rhein-Mundenheim,
has been named as the inventor
aldehydharzlösung, 30 Teilen 50°/0iger Polyvinylchloriddispersion und 1 Teil Netzmittel, und nach dem Aufsaugen anschließend mit einer Lösung, bestehend aus 10 Teilen Ammoniumchlorid und 90 Teilen Wasser, bestrichen. Das Leder od. dgl. erhält nach dem Formen und Auftrocknen eine gegen Wärme und Feuchtigkeit unempfindliche Versteifung. aldehydharzlösung, 30 parts of 50 ° / 0 hydrochloric Polyvinylchloriddispersion and 1 part of wetting agent, and after absorbing then coated with a solution consisting of 10 parts of ammonium chloride and 90 parts of water. After molding and drying, the leather or the like receives a stiffening which is insensitive to heat and moisture.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER14494A DE1023855B (en) | 1954-06-25 | 1954-06-25 | Process for stiffening leather and leather substitutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER14494A DE1023855B (en) | 1954-06-25 | 1954-06-25 | Process for stiffening leather and leather substitutes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1023855B true DE1023855B (en) | 1958-02-06 |
Family
ID=7399289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER14494A Pending DE1023855B (en) | 1954-06-25 | 1954-06-25 | Process for stiffening leather and leather substitutes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1023855B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1160758B (en) * | 1959-01-19 | 1964-01-02 | Leather Ind Res I | Process for stiffening parts of footwear |
| DE1196097B (en) * | 1958-09-22 | 1965-07-01 | Campex Res And Trading Corp | Method for pinching shoe ends |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE511423A (en) * | ||||
| GB566137A (en) * | 1942-06-10 | 1944-12-15 | British United Shoe Machinery | Improvements in or relating to the stiffening of shoes and stiffeners adapted for use for such purpose |
| FR1055672A (en) * | 1952-05-10 | 1954-02-22 | United Shoe Machinery Ab | Piece impregnated with thermosetting resin, suitable for use as a stiffener for the toe or heel of a shoe, or the like |
-
1954
- 1954-06-25 DE DER14494A patent/DE1023855B/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE511423A (en) * | ||||
| GB566137A (en) * | 1942-06-10 | 1944-12-15 | British United Shoe Machinery | Improvements in or relating to the stiffening of shoes and stiffeners adapted for use for such purpose |
| FR1055672A (en) * | 1952-05-10 | 1954-02-22 | United Shoe Machinery Ab | Piece impregnated with thermosetting resin, suitable for use as a stiffener for the toe or heel of a shoe, or the like |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1196097B (en) * | 1958-09-22 | 1965-07-01 | Campex Res And Trading Corp | Method for pinching shoe ends |
| DE1160758B (en) * | 1959-01-19 | 1964-01-02 | Leather Ind Res I | Process for stiffening parts of footwear |
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