CN104862429A - Method for retanning wet blue goat shoe upper leather by using water-borne epoxy resin - Google Patents
Method for retanning wet blue goat shoe upper leather by using water-borne epoxy resin Download PDFInfo
- Publication number
- CN104862429A CN104862429A CN201510269579.6A CN201510269579A CN104862429A CN 104862429 A CN104862429 A CN 104862429A CN 201510269579 A CN201510269579 A CN 201510269579A CN 104862429 A CN104862429 A CN 104862429A
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- CN
- China
- Prior art keywords
- retanning
- water
- epoxy resin
- added
- wet blue
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- 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.)
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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
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
-
- 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
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/22—Chemical tanning by organic agents using polymerisation products
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- 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
The invention relates to a method for retanning wet blue goat shoe upper leather by using water-borne epoxy resin, and aims to solve the problems that the existing retanning for the wet blue goat shoe upper leather mainly adopts the conventional chromium retanning process, chromium powder remaining in waste liquor causes resource waste and serious environmental pollution and directly affects the human living environment, and the traditional epoxy resin mainly adopts solvent type, can release large quantity of organic pollutants in the use process and pollutes the environment. The method comprises the following steps: blue leather is weighed, water is added, the water temperature is adjusted, and a degreasing agent and a rewetting agent are added for water return; water is added again, sodium bicarbonate is added to regulate pH, the water-borne epoxy resin is added, then formic acid is added to regulate the pH, and retanning is finished. The water-borne epoxy resin can be applied to a retanning process for the wet blue goat shoe upper leather, the shrinkage temperature of the wet blue leather is higher than 120 DEG C, the thickening rate reaches 22%, residual chromium in wastewater can be reduced, and pollution caused by the organic pollutants due to the use of the traditional epoxy resin is avoided simultaneously.
Description
Technical field
the invention belongs to goat wet blue retanning Technology field, be specifically related to a kind of method of aqueous epoxy resins retanning goat wet blue upper leather.
Background technology
China's leather shoes annual production about 2,400,000,000 pairs, accounts for 40% of global leather shoes ultimate production, and wherein goat shoe upper leather is a leather shoes production and application class material widely.The manufacture of goat shoe upper leather is in the market still based on the chrome retanned technique of routine.In tanning production, because the specific absorption of chromium powder is low, therefore a large amount of chromium powders remains in waste liquid, both wastes resource, causes serious pollution to environment, directly affects again the living environment of the mankind.In addition, traditional epoxy resin is solvent type mostly, in use can discharge a large amount of organic pollutants, to environment.That is familiar with pollution hazard along with people gos deep into, and " cleanly production " idea is paid attention to day by day, and the pollution problem existed in tanning industry is in the urgent need to address.At present, the research in epoxy resin tanning agent attracts attention, however relevant using aqueous epoxy resins as process hides retanning agent application also rarely seen report.
Summary of the invention
The object of this invention is to provide a kind of method of aqueous epoxy resins retanning goat wet blue upper leather, reduce chromium powder remaining in waste liquid, avoid the Organic pollutants using conventional epoxies to cause simultaneously.
The technical solution adopted in the present invention is:
The method of aqueous epoxy resins retanning goat wet blue upper leather, is characterized in that:
Realized by following steps:
Blue skin is weighed, and weightening finish 50%, as measurement basis, carries out following operation in rotary drum:
Backwater: the water weighing the rear blue tare weight amount 100% of weightening finish, regulates water temperature to be 35 DEG C; Add grease-removing agent 0.3%, rewetting agent 0.5% simultaneously;
Retanning: the water weighing the rear blue tare weight amount 100% of weightening finish; Add sodium bicarbonate, adjustment pH is 4.5-6.0; Add aqueous epoxy resins 4%-12%, turn 60-150 minute; Add formic acid again, regulate pH:3.0-5.0.
TJ-A124 chosen by described grease-removing agent;
WT-H is chosen in described rewetting agent.
The present invention has the following advantages:
Use epoxy resin process goat wet blue upper leather of the present invention, the shrinkage temperature of wet blue more than 120 DEG C, the rate of thickening reaches 22%, has certain retanning effect to collagen.The present invention can reduce chromium powder remaining in waste liquid, avoids the Organic pollutants using conventional epoxies to cause simultaneously, is conducive to cleaner leather-making, promote the Sustainable development of industry.
Embodiment
Below in conjunction with embodiment, the present invention will be described in detail.
The method of the aqueous epoxy resins retanning goat wet blue upper leather that the present invention relates to, is characterized in that:
Realized by following steps:
Blue skin is weighed, and weightening finish 50%, as measurement basis, carries out following operation in rotary drum:
Backwater: the water weighing the rear blue tare weight amount 100% of weightening finish, regulates water temperature to be 35 DEG C; Add grease-removing agent 0.3%, rewetting agent 0.5% simultaneously;
Retanning: the water weighing the rear blue tare weight amount 100% of weightening finish; Add sodium bicarbonate, adjustment pH is 4.5-6.0; Add aqueous epoxy resins 4%-12%, turn 60-150 minute; Add formic acid again, regulate pH:3.0-5.0.
TJ-A124 chosen by described grease-removing agent;
WT-H is chosen in described rewetting agent.
Described aqueous epoxy resins, and the aqueous epoxy resins referring to directly to be prepared by radical polymerization (reference: Gao Dangge, Li Rui, Lv Bin, Ma Jianzhong. containing the preparation method [P] of carboxyl epoxy resin tanning agent. application number: 201310491936.4)
Embodiment 1:
Blue skin is weighed, and weightening finish 50%, as measurement basis, carries out following operation in rotary drum:
Backwater: the water weighing the rear blue tare weight amount 100% of weightening finish, regulates water temperature to be 35 DEG C; Add grease-removing agent 0.3%, rewetting agent 0.5% simultaneously;
Retanning: the water weighing the rear blue tare weight amount 100% of weightening finish; Add sodium bicarbonate, regulate pH to be 4.5; Add aqueous epoxy resins 12%, turn 60 minutes; Add formic acid again, regulate pH:5.0.
TJ-A124 chosen by described grease-removing agent;
WT-H is chosen in described rewetting agent.
Embodiment 2:
Blue skin is weighed, and weightening finish 50%, as measurement basis, carries out following operation in rotary drum:
Backwater: the water weighing the rear blue tare weight amount 100% of weightening finish, regulates water temperature to be 35 DEG C; Add grease-removing agent 0.3%, rewetting agent 0.5% simultaneously;
Retanning: the water weighing the rear blue tare weight amount 100% of weightening finish; Add sodium bicarbonate, regulate pH to be 5.0; Add aqueous epoxy resins 8%, turn 105 minutes; Add formic acid again, regulate pH:4.0.
TJ-A124 chosen by described grease-removing agent;
WT-H is chosen in described rewetting agent.
Embodiment 3:
Blue skin is weighed, and weightening finish 50%, as measurement basis, carries out following operation in rotary drum:
Backwater: the water weighing the rear blue tare weight amount 100% of weightening finish, regulates water temperature to be 35 DEG C; Add grease-removing agent 0.3%, rewetting agent 0.5% simultaneously;
Retanning: the water weighing the rear blue tare weight amount 100% of weightening finish; Add sodium bicarbonate, regulate pH to be 6.0; Add aqueous epoxy resins 4%, turn 150 minutes; Add formic acid again, regulate pH:3.0.
TJ-A124 chosen by described grease-removing agent;
WT-H is chosen in described rewetting agent.
Aqueous epoxy resins process goat wet blue upper leather is utilized in the present invention, after testing, the shrinkage temperature of wet blue more than 120 DEG C, the rate of thickening reaches 22%, to collagen, there is retanning effect, compared with conventional acrylic retanning agent, the residual reduction by 32% of chromium powder in waste liquid can be made, avoid the Organic pollutants using conventional epoxies to cause simultaneously.
Content of the present invention is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading specification sheets of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (2)
1. the method for aqueous epoxy resins retanning goat wet blue upper leather, is characterized in that:
Realized by following steps:
Blue skin is weighed, and weightening finish 50%, as measurement basis, carries out following operation in rotary drum:
Backwater: the water weighing the rear blue tare weight amount 100% of weightening finish, regulates water temperature to be 35 DEG C; Add grease-removing agent 0.3%, rewetting agent 0.5% simultaneously;
Retanning: the water weighing the rear blue tare weight amount 100% of weightening finish; Add sodium bicarbonate, adjustment pH is 4.5-6.0; Add aqueous epoxy resins 4%-12%, turn 60-150 minute; Add formic acid again, regulate pH:3.0-5.0.
2. the method for aqueous epoxy resins retanning goat wet blue upper leather according to claim 1, is characterized in that:
TJ-A124 chosen by described grease-removing agent;
WT-H is chosen in described rewetting agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269579.6A CN104862429B (en) | 2015-05-25 | 2015-05-25 | Method for retanning wet blue goat shoe upper leather by using water-borne epoxy resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269579.6A CN104862429B (en) | 2015-05-25 | 2015-05-25 | Method for retanning wet blue goat shoe upper leather by using water-borne epoxy resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104862429A true CN104862429A (en) | 2015-08-26 |
| CN104862429B CN104862429B (en) | 2017-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510269579.6A Expired - Fee Related CN104862429B (en) | 2015-05-25 | 2015-05-25 | Method for retanning wet blue goat shoe upper leather by using water-borne epoxy resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104862429B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354250A (en) * | 2017-08-31 | 2017-11-17 | 成都卡美奇鞋业有限公司 | Chinese medicine preparation for leather shoes deodorization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009067847A (en) * | 2007-09-11 | 2009-04-02 | Kaneka Corp | Re-tanning agent and leather product |
| CN102304592A (en) * | 2011-08-02 | 2012-01-04 | 峰安皮业股份有限公司 | Production process of suede leather |
-
2015
- 2015-05-25 CN CN201510269579.6A patent/CN104862429B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009067847A (en) * | 2007-09-11 | 2009-04-02 | Kaneka Corp | Re-tanning agent and leather product |
| CN102304592A (en) * | 2011-08-02 | 2012-01-04 | 峰安皮业股份有限公司 | Production process of suede leather |
Non-Patent Citations (1)
| Title |
|---|
| 吕斌等: ""含羧基水性环氧树脂的制备及其性能"", 《精细化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354250A (en) * | 2017-08-31 | 2017-11-17 | 成都卡美奇鞋业有限公司 | Chinese medicine preparation for leather shoes deodorization |
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|---|---|
| CN104862429B (en) | 2017-04-19 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |