CN104745735A - Preparation method of wet white leather - Google Patents
Preparation method of wet white leather Download PDFInfo
- Publication number
- CN104745735A CN104745735A CN201510134110.1A CN201510134110A CN104745735A CN 104745735 A CN104745735 A CN 104745735A CN 201510134110 A CN201510134110 A CN 201510134110A CN 104745735 A CN104745735 A CN 104745735A
- Authority
- CN
- China
- Prior art keywords
- liming
- tanning agent
- tanning
- add
- water
- 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.)
- Granted
Links
- 239000010985 leather Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 64
- 238000005554 pickling Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 20
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 238000010790 dilution Methods 0.000 claims description 20
- 239000012895 dilution Substances 0.000 claims description 20
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 15
- 230000002378 acidificating effect Effects 0.000 claims description 12
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 10
- 235000019253 formic acid Nutrition 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 239000006210 lotion Substances 0.000 claims description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 10
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 10
- 235000017550 sodium carbonate Nutrition 0.000 claims description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- 239000002351 wastewater Substances 0.000 abstract description 4
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 poly-carbamyl Sulfonates Chemical class 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000004083 survival effect Effects 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
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
-
- 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
- C14C3/28—Multi-step processes
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
The invention discloses a preparation method of wet white leather, which comprises the steps that liming skin is subjected to deliming softening and softening rinsing, is then tanned with an X-Tan. tanning agent, is subjected to salt-free pickling, and is finally tanned with a TANFORTM T series tanning agent. The preparation method combines the X-Tan. tanning agent with the TANFORTM T series tanning agent, so that the wet white leather with higher shrinkage temperature can be obtained; chromium-free tanning is realized; the utilization of inorganic salt is reduced; and the content of the inorganic salt in waste water is reduced.
Description
Technical field
The present invention relates to ecological tanning technology field, be specifically related to a kind of preparation method of white wet leather.
Background technology
In tanning production, chrome tanning agent uses the tanning agent material the most extensive, consumption is maximum at present, and the chrome tanned leather of tanning has its advantage that cannot replace.But, the waste water containing chromium produced in tannery, mud and leather leftover, to ecotope, livestock cause high risks (Ma Jianzhong. leather chemicals [M] .2004, Chemical Industry Press, 110), great threat is constituted to the survival and development of mankind itself, and chrome tanned leather color and luster is comparatively dark, is not well positioned to meet the hobby of people to beautiful color.Therefore, develop the wet-white leather tannery of Chrome-free will have good development prospect (Shi Yonglu, Wang Wenqi, Zhao Hui. simple and easy aluming yellow cow sofa leather technique [J]. leather and chemical industry, 2014, (31): 22-25).
be a kind of poly-carbamyl Sulfonates mixture with good flexibility, soluble in water, stability in storage is good, and it is containing metal, phenol and aldehyde material not, and is safe from harm to environment; TANFOR
tMt series tanning agent take silicoaluminate as the tanning material of activeconstituents, owing to being raw material based on the natural minerals of aluminium and silicon, is perfectly safe harmless to the mankind and environment.
TANFOR
tMt series tanning agent is applicable to the acid tanning system that pH is 2.8-3.0, similar to the tanning principle of chrome tanning agent, be mainly combined with carboxyl (Qiang Xihuai, Chen Miaomiao, etc. environment-friendly and high-performance KEMIRA TANFOR
tMthe performance of T series tanning agent and application [J]. Chinese leather, 2013, (42): 19-22);
tanning agent is applicable to carry out tanning effect under weakly alkaline condition, and amino that is main and collagen reacts.The production of white wet leather can be realized at this bi-material separately under independently tanning system, but also there is certain defect or drawback, such as: its tanned white wet leather shrinkage temperature is not high, TANFOR
tMroutine is needed to have salt pickling etc. during the tanning agent tanning of T series.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of preparation method of white wet leather, will
and TANFOR
tMt series tanning agent combines, and not only can obtain the higher wet-white leather of shrinkage temperature, realize chrome-free tanning, reduce the use of inorganic salt and the content in waste water thereof.
For achieving the above object, the present invention is achieved through the following technical solutions:
A preparation method for white wet leather, comprises the following steps:
1) deashing and softening is carried out to liming skin, softening washing;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water of liming tare weight amount 100% and 2-5%
tanning agent, rotates 2h-4h by 20 DEG C-25 DEG C; Use the alkaline matter after the dilution of 10 times of water, in 2h by pH regulator to 8.5-9.0, be rotated further 1h-2h;
3) salt-free pickling: in step 2) owse in gradation add the acidic substance after with the dilution of 10 times of water, in 1h, regulate body lotion pH at 2.5-3.0, be rotated further 1h-2h at 20 DEG C-25 DEG C;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 3-5% in pickling liquid, 20 DEG C-25 DEG C, rotate 2h-3h; Then add the T-B tanning agent of liming tare weight amount 2-4%, rotate 2h-4h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1h-2h, looking into pH is 4.0-4.4, stops drum and spends the night, go out drum after rotating 30min next day.
Described liming skin is sheepskin, ox-hide or pigskin.
Described alkaline matter is sodium bicarbonate or soda ash.
Described acidic substance are formic acid or sulfuric acid.
Tool of the present invention has the following advantages:
1, by this method tanning leather dermatotome in white, dyeing behavior is splendid.
2, the shortcoming that when this two classes tanning agent is used alone, shrinkage temperature is lower is overcome.
3, avoid the use of the sodium-chlor when pickling, achieve salt-free pickling, to alleviate in leather-making waste water chlorion to the pollution of environment.
Embodiment
Below by embodiment, the present invention is specifically described, is only used to further illustrate the present invention, can not limiting the scope of the invention be interpreted as.
Embodiment one
A preparation method for white wet leather, comprises the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is ox-hide;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 5% of liming tare weight amount 100%
tanning agent, rotates 4h by 20 DEG C; Use the sodium bicarbonate after 10 times of water dilutions by pH regulator to 9.0 in 2h, then rotate 2h, described alkaline matter is soda ash;
3) salt-free pickling: in step 2) owse in gradation add the formic acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.8, be rotated further 2h at 20 DEG C, described acidic substance are sulfuric acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 3% in pickling liquid, 20 DEG C, rotate 2h; Then add the T-B tanning agent of liming tare weight amount 4%, rotate 4h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1h, look into pH be 4.4 stop drum spend the night, go out drum after rotating 30min next day.
The tanning shrinkage temperature of the present embodiment is 90 DEG C.
Embodiment two
A preparation method for white wet leather, comprises the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is sheepskin;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 4% of liming tare weight amount 100%
tanning agent, rotates 3h by 25 DEG C; Use the soda ash after 10 times of water dilutions by pH regulator to 8.8 in 2h, then rotate 1.5h, described alkaline matter is sodium bicarbonate;
3) salt-free pickling: in step 2) owse in gradation add the formic acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.9, be rotated further 2h at 25 DEG C, described acidic substance are formic acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 3% in pickling liquid, 25 DEG C, rotate 2h; Then add the T-B tanning agent of liming tare weight amount 3%, rotate 3h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1.5h, looking into pH is 4.2, stops drum and spends the night, go out drum after rotating 30min next day.
The tanning shrinkage temperature of the present embodiment is 88 DEG C.
Embodiment three
A preparation method for white wet leather, comprises the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is sheepskin;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 3% of liming tare weight amount 100%
tanning agent, rotates 2.5h by 25 DEG C; Use the soda ash after 10 times of water dilutions by pH regulator to 8.5 in 2h, then rotate 1.5h, described alkaline matter is sodium bicarbonate;
3) salt-free pickling: in step 2) owse in gradation add the sulfuric acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.6, be rotated further 1.5h at 25 DEG C, described acidic substance are formic acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 4% in pickling liquid, 25 DEG C, rotate 2.5h; Then add the T-B tanning agent of liming tare weight amount 2.5%, rotate 2h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1.5h, looking into pH is 4.1, stops drum and spends the night, go out drum after rotating 30min next day.
The tanning shrinkage temperature of the present embodiment is 89 DEG C.
Embodiment four
A preparation method for white wet leather, comprises the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is pigskin;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 2% of liming tare weight amount 100%
tanning agent, rotates 2h by 22 DEG C; Use the sodium bicarbonate after 10 times of water dilutions by pH regulator to 9.0 in 2h, then rotate 1h, described alkaline matter is soda ash;
3) salt-free pickling: in step 2) owse in gradation add the sulfuric acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.5, be rotated further 1h at 22 DEG C, described acidic substance are sulfuric acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 5% in pickling liquid, 22 DEG C, rotate 3h; Then add the T-B tanning agent of liming tare weight amount 2%, rotate 2h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 2h, looking into pH is 4.0, stops drum and spends the night, go out drum after rotating 30min next day.
The tanning shrinkage temperature of the present embodiment is 88 DEG C.
Claims (8)
1. a preparation method for white wet leather, is characterized in that, comprise the following steps:
1) deashing and softening is carried out to liming skin, softening washing;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water of liming tare weight amount 100% and 2-5%
tanning agent, rotates 2h-4h by 20 DEG C-25 DEG C; Use the alkaline matter after the dilution of 10 times of water, in 2h by pH regulator to 8.5-9.0, then rotate 1h-2h;
3) salt-free pickling: in step 2) owse in gradation add the acidic substance after with the dilution of 10 times of water, in 1h, regulate body lotion pH at 2.5-3.0, be rotated further 1h-2h at 20 DEG C-25 DEG C;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 3-5% in pickling liquid, 20 DEG C-25 DEG C, rotate 2h-3h; Then add the T-B tanning agent of liming tare weight amount 2-4%, rotate 2h-4h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1h-2h, looking into pH is 4.0-4.4, stops drum and spends the night, go out drum after rotating 30min next day.
2. the preparation method of a kind of white wet leather according to claim 1, is characterized in that: described liming skin is sheepskin, ox-hide or pigskin.
3. the preparation method of a kind of white wet leather according to claim 1, is characterized in that: described alkaline matter is sodium bicarbonate or soda ash.
4. the preparation method of a kind of white wet leather according to claim 1, is characterized in that: described acidic substance are formic acid or sulfuric acid.
5. the preparation method of a kind of white wet leather according to claim 1, is characterized in that, comprise the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is ox-hide;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 5% of liming tare weight amount 100%
tanning agent, rotates 4h by 20 DEG C; Use the sodium bicarbonate after 10 times of water dilutions by pH regulator to 9.0 in 2h, then rotate 2h, described alkaline matter is soda ash;
3) salt-free pickling: in step 2) owse in gradation add the formic acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.8, be rotated further 2h at 20 DEG C, described acidic substance are sulfuric acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 3% in pickling liquid, 20 DEG C, rotate 2h; Then add the T-B tanning agent of liming tare weight amount 4%, rotate 4h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1h, look into pH be 4.4 stop drum spend the night, go out drum after rotating 30min next day.
6. the preparation method of a kind of white wet leather according to claim 1, is characterized in that, comprise the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is sheepskin;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 4% of liming tare weight amount 100%
tanning agent, rotates 3h by 25 DEG C; Use the soda ash after 10 times of water dilutions by pH regulator to 8.8 in 2h, then rotate 1.5h, described alkaline matter is sodium bicarbonate;
3) salt-free pickling: in step 2) owse in gradation add the formic acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.9, be rotated further 2h at 25 DEG C, described acidic substance are formic acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 3% in pickling liquid, 25 DEG C, rotate 2h; Then add the T-B tanning agent of liming tare weight amount 3%, rotate 3h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1.5h, looking into pH is 4.2, stops drum and spends the night, go out drum after rotating 30min next day.
7. the preparation method of a kind of white wet leather according to claim 1, is characterized in that, comprise the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is sheepskin;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 3% of liming tare weight amount 100%
tanning agent, rotates 2.5h by 25 DEG C; Use the soda ash after 10 times of water dilutions by pH regulator to 8.5 in 2h, then rotate 1.5h, described alkaline matter is sodium bicarbonate;
3) salt-free pickling: in step 2) owse in gradation add the sulfuric acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.6, be rotated further 1.5h at 25 DEG C, described acidic substance are formic acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 4% in pickling liquid, 25 DEG C, rotate 2.5h; Then add the T-B tanning agent of liming tare weight amount 2.5%, rotate 2h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 1.5h, looking into pH is 4.1, stops drum and spends the night, go out drum after rotating 30min next day.
8. the preparation method of a kind of white wet leather according to claim 1, is characterized in that, comprise the following steps:
1) carry out deashing and softening to liming skin, softening washing, described liming skin is pigskin;
2)
the tanning of tanning agent: the liming skin after washing is dropped into rotary drum, adds the water and 2% of liming tare weight amount 100%
tanning agent, rotates 2h by 22 DEG C; Use the sodium bicarbonate after 10 times of water dilutions by pH regulator to 9.0 in 2h, then rotate 1h, described alkaline matter is soda ash;
3) salt-free pickling: in step 2) owse in gradation add the sulfuric acid after with the dilution of 10 times of water, in 1h, regulate body lotion pH 2.5, be rotated further 1h at 22 DEG C, described acidic substance are sulfuric acid;
4) TANFOR
tMthe tanning of T series tanning agent: in step 3) add the T-A tanning agent of liming tare weight amount 5% in pickling liquid, 22 DEG C, rotate 3h; Then add the T-B tanning agent of liming tare weight amount 2%, rotate 2h; Add the water of liming tare weight amount 150%, 40 DEG C, then turn 2h, looking into pH is 4.0, stops drum and spends the night, go out drum after rotating 30min next day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134110.1A CN104745735B (en) | 2015-03-25 | 2015-03-25 | A kind of preparation method of white wet leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134110.1A CN104745735B (en) | 2015-03-25 | 2015-03-25 | A kind of preparation method of white wet leather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104745735A true CN104745735A (en) | 2015-07-01 |
| CN104745735B CN104745735B (en) | 2016-06-08 |
Family
ID=53585982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510134110.1A Expired - Fee Related CN104745735B (en) | 2015-03-25 | 2015-03-25 | A kind of preparation method of white wet leather |
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| Country | Link |
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| CN (1) | CN104745735B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238888A (en) * | 2015-10-27 | 2016-01-13 | 兴业皮革科技股份有限公司 | Production technology for preparing wet white leather on basis of Zr-Al-Ti complex |
| CN109234476A (en) * | 2018-11-26 | 2019-01-18 | 四川大学 | It is a kind of with hydrophobic high dispersive hide fiber structure without chrome leather preparation method |
| CN109234477A (en) * | 2018-11-26 | 2019-01-18 | 四川大学 | A kind of preparation method of Chrome-free leather |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4784664A (en) * | 1986-06-24 | 1988-11-15 | Seton Company | Non-chrome tanning method |
| CN103834751A (en) * | 2012-11-21 | 2014-06-04 | 中牛集团有限公司 | Non-chrome tanned wet-white leather making technology |
-
2015
- 2015-03-25 CN CN201510134110.1A patent/CN104745735B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4784664A (en) * | 1986-06-24 | 1988-11-15 | Seton Company | Non-chrome tanning method |
| CN103834751A (en) * | 2012-11-21 | 2014-06-04 | 中牛集团有限公司 | Non-chrome tanned wet-white leather making technology |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238888A (en) * | 2015-10-27 | 2016-01-13 | 兴业皮革科技股份有限公司 | Production technology for preparing wet white leather on basis of Zr-Al-Ti complex |
| CN109234476A (en) * | 2018-11-26 | 2019-01-18 | 四川大学 | It is a kind of with hydrophobic high dispersive hide fiber structure without chrome leather preparation method |
| CN109234477A (en) * | 2018-11-26 | 2019-01-18 | 四川大学 | A kind of preparation method of Chrome-free leather |
| CN109234477B (en) * | 2018-11-26 | 2021-06-29 | 四川大学 | Preparation method of chromium-free leather |
| CN109234476B (en) * | 2018-11-26 | 2021-08-06 | 四川大学 | Preparation method of chrome-free tanned leather with hydrophobic high-dispersion leather fiber structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104745735B (en) | 2016-06-08 |
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