CN104804135B - Amphoteric low salt pickling and low chrome tanning auxiliary and preparation method thereof - Google Patents
Amphoteric low salt pickling and low chrome tanning auxiliary and preparation method thereof Download PDFInfo
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- CN104804135B CN104804135B CN201510203712.8A CN201510203712A CN104804135B CN 104804135 B CN104804135 B CN 104804135B CN 201510203712 A CN201510203712 A CN 201510203712A CN 104804135 B CN104804135 B CN 104804135B
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000005554 pickling Methods 0.000 title claims abstract description 52
- 150000003839 salts Chemical class 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 claims abstract description 19
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 239000012752 auxiliary agent Substances 0.000 claims description 43
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 36
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 235000010265 sodium sulphite Nutrition 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 238000010792 warming Methods 0.000 claims description 18
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- UIIIBRHUICCMAI-UHFFFAOYSA-N prop-2-ene-1-sulfonic acid Chemical compound OS(=O)(=O)CC=C UIIIBRHUICCMAI-UHFFFAOYSA-N 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000010985 leather Substances 0.000 abstract description 15
- 239000002699 waste material Substances 0.000 abstract description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910001430 chromium ion Inorganic materials 0.000 abstract description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 abstract 2
- DIKJULDDNQFCJG-UHFFFAOYSA-M sodium;prop-2-ene-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC=C DIKJULDDNQFCJG-UHFFFAOYSA-M 0.000 abstract 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 abstract 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 3
- 102000008186 Collagen Human genes 0.000 description 2
- 108010035532 Collagen Proteins 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229920001436 collagen Polymers 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229940069428 antacid Drugs 0.000 description 1
- 239000003159 antacid agent Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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- Detergent Compositions (AREA)
Abstract
The invention relates to an amphoteric low salt pickling and low chrome tanning auxiliary and a preparation method thereof and aims to solve the problem that in the traditional leather production and processing process, as a large amount of chromium ions and chloride ions is contained in chrome tanning waste liquid, severe pollution can be generated to the environment. The preparation method comprises the following steps: firstly adding sodium allysulfonate dissolved in water into a constant-pressure liquid dripping funnel, then adding diallyl dimethyl ammonium chloride, acrylic acid, ammonium persulfate, sodium bisulfite and water into a three-necked flask provided with a stirrer and a condensing device, completing dripping of the sodium allysulfonate within a certain time after temperature rise and performing constant-temperature reaction; cooling, then adjusting the pH and discharging to prepare the amphoteric low salt pickling and low chrome tanning auxiliary. When the amphoteric low salt pickling and low chrome tanning auxiliary prepared by the preparation method is applied to leather tanning, the content of Cr2O3 in the waste liquid and the contention of the chloride ions can be obviously reduced, the shrinkage temperature of wet blue leather meets the factory production requirements, and the leather quality is not affected.
Description
Technical field
The present invention relates to the preparation method of a kind of leather cleaning additive, be specifically related to few salt pickling less chrome tannage auxiliary agent of a kind of both sexes and preparation method thereof.
Background technology
In the tradition tanning production course of processing, a certain amount of NaCl anti-antacid can be added during pickling swell, and tannery can add substantial amounts of chrome tanning agent and guarantee resultant leather quality, although the Leather Properties that this technique produces is excellent and stable, but its problem of environmental pollution brought the most gradually comes into one's own.Tanning is directly carried out, in tradition waste tanning liquor, containing substantial amounts of chromium ion and chloride ion (Cr owing to not changing liquid after pickling2O3Concentration is about 2000 ~ 4000mg/L, and chlorine ion concentration is 30000～40000mg/L), substantial amounts of waste tanning liquor can cause serious environmental pollution.So the pickling, tanning technology of a kind of greenization should actively be found, reduce the pollution of chroming waste liquor, it is achieved cleanly production.
In order to solve the chloride ion contamination problem of waste tanning liquor, some scholars propose acid-free chromte tannage technology, so can avoid the addition of neutral salt, the chloride ion content being greatly reduced in waste liquid.But after employing tanning without pickling, crust leather collagen fiber are the loosest, after tanning, leather body flexibility is slightly worse, and finished leather unstable properties also limit its further popularization and application.Therefore, implement few salt pickling Technology, be possible not only to ensure resultant Leather quality, it is also possible to significantly reduce the chlorine ion concentration in waste liquid.
About the pollution problem of chrome tanning agent, existing without chrome tanning, few chrome tanning and high-absorption chrome tanning technique and the application of technology.Although technology without chrome tanning can fundamentally solve pollution of chromium problem, but hardly results in the chrome-free tanning agent that can compare favourably with chrome tanning agent tanning performance；And chrome tanning or high-absorption chrome tanning method are simple to operate due to it less, not changing existing technique, the most industrialized popularization, is to reduce one of easy method of pollution of chromium most convenient.
Summary of the invention
It is an object of the invention to provide few salt pickling less chrome tannage auxiliary agent of a kind of both sexes and preparation method thereof, reduce the addition of chrome tanning agent in NaCl during pickling and tannery, it is achieved few salt pickling less chrome tannage production process, reduce Cr in waste liquid2O3And chloride ion content.
The technical solution adopted in the present invention is:
The preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes, it is characterised in that:
Realized by following steps:
Step one: the sodium allylsulfonate of 2 ~ 5g is dissolved in 4 ~ 10g water formation solution, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 9 ~ 13g, acrylic acid 6 ~ 8g, Ammonium persulfate. 1 ~ 2g, sodium sulfite 0.2 ~ 0. 5g and water 12 ~ 17g in equipped with the 100mL there-necked flask of agitator and condensing unit, it is warming up to 70 ~ 80 DEG C, allyl sulphonic acid sodium solution in dropping step one, 20 ~ 40min drips off, isothermal reaction 3 ~ 5h；
Step 3: regulating pH after cooling is 4.0 ~ 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of described both sexes, it is characterised in that:
Realized by following steps:
Step one: 5g sodium allylsulfonate be dissolved in 10g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 9.4g, acrylic acid 6g, Ammonium persulfate. 1g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.25g, water 15.6g, be warming up to 70 DEG C, dropping sodium allylsulfonate, 40min drips off, isothermal reaction 5h；
Step 3: regulating pH after cooling is 4.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of described both sexes, it is characterised in that:
Realized by following steps:
Step one: 2g sodium allylsulfonate be dissolved in 4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 12.5g, acrylic acid 8g, Ammonium persulfate. 1.7g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.4g, water 16g, be warming up to 80 DEG C, dropping sodium allylsulfonate, 20min drips off, isothermal reaction 3h；
Step 3: regulating pH after cooling is 5.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of described both sexes, it is characterised in that:
Realized by following steps:
Step one: 2.68g sodium allylsulfonate be dissolved in 5.3g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 10g, acrylic acid 6.4g, Ammonium persulfate. 1.2g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.3g, water 14.7g, be warming up to 75 DEG C, dropping sodium allylsulfonate, 30min drips off, isothermal reaction 4h；
Step 3: regulating pH after cooling is 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of described both sexes, it is characterised in that:
Realized by following steps:
Step one: 4.2g sodium allylsulfonate be dissolved in 8.4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 11.3g, acrylic acid 7.2g, Ammonium persulfate. 1.8g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.45g, water 12.3g, be warming up to 80 DEG C, dropping sodium allylsulfonate, 40min drips off, isothermal reaction 5h；
Step 3: regulating pH after cooling is 4.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of described both sexes, it is characterised in that:
Realized by following steps:
Step one: 2g sodium allylsulfonate be dissolved in 4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 12.5g, acrylic acid 6.8g, Ammonium persulfate. 1.3g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.3g, water 16.9g, be warming up to 75 DEG C, dropping sodium allylsulfonate, 20min drips off, isothermal reaction 4h；
Step 3: regulating pH after cooling is 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The few salt pickling less chrome tannage auxiliary agent of both sexes that the preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes prepares as mentioned.
The invention have the advantages that
The present invention is prepared for the few salt pickling less chrome tannage auxiliary agent of both sexes, this auxiliary agent contains multiple functional group, sulfonic group can be combined with collagenous amino in acid condition with carboxyl, it is to avoid amino the most positively charged under acid condition is mutually exclusive causes pelt generation swelling, it is achieved that few salt pickling.Being added before chrome tanning by this auxiliary agent, multiple functional group can carry out pre-modification to collagen in advance, can strengthen the binding ability of chrome tanning agent and leather, improves chrome uptake rate, reduces the Cr in waste liquid2O3Content.And this auxiliary agent has ambisexuality, can avoid finished leather that " losing colour " phenomenon occurs to a certain extent.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
The present invention relates to the preparation method of the few salt pickling less chrome tannage auxiliary agent of a kind of both sexes, following steps realize:
Step one: the sodium allylsulfonate of 2 ~ 5g is dissolved in 4 ~ 10g water formation solution, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 9 ~ 13g, acrylic acid 6 ~ 8g, Ammonium persulfate. 1 ~ 2g, sodium sulfite 0.2 ~ 0. 5g and water 12 ~ 17g in equipped with the 100mL there-necked flask of agitator and condensing unit, it is warming up to 70 ~ 80 DEG C, allyl sulphonic acid sodium solution in dropping step one, 20 ~ 40min drips off, isothermal reaction 3 ~ 5h；
Step 3: regulating pH after cooling is 4.0 ~ 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
Embodiment 1:
Step one: 5g sodium allylsulfonate be dissolved in 10g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 9.4g, acrylic acid 6g, Ammonium persulfate. 1g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.25g, water 15.6g, be warming up to 70 DEG C, dropping sodium allylsulfonate, 40min drips off, isothermal reaction 5h；
Step 3: regulating pH after cooling is 4.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
Embodiment 2:
Step one: 2g sodium allylsulfonate be dissolved in 4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 12.5g, acrylic acid 8g, Ammonium persulfate. 1.7g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.4g, water 16g, be warming up to 80 DEG C, dropping sodium allylsulfonate, 20min drips off, isothermal reaction 3h；
Step 3: regulating pH after cooling is 5.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
Embodiment 3:
Step one: 2.68g sodium allylsulfonate be dissolved in 5.3g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 10g, acrylic acid 6.4g, Ammonium persulfate. 1.2g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.3g, water 14.7g, be warming up to 75 DEG C, dropping sodium allylsulfonate, 30min drips off, isothermal reaction 4h；
Step 3: regulating pH after cooling is 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
Embodiment 4:
Step one: 4.2g sodium allylsulfonate be dissolved in 8.4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 11.3g, acrylic acid 7.2g, Ammonium persulfate. 1.8g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.45g, water 12.3g, be warming up to 80 DEG C, dropping sodium allylsulfonate, 40min drips off, isothermal reaction 5h；
Step 3: regulating pH after cooling is 4.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
Embodiment 5:
Step one: 2g sodium allylsulfonate be dissolved in 4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 12.5g, acrylic acid 6.8g, Ammonium persulfate. 1.3g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.3g, water 16.9g, be warming up to 75 DEG C, dropping sodium allylsulfonate, 20min drips off, isothermal reaction 4h；
Step 3: regulating pH after cooling is 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The few salt pickling less chrome tannage auxiliary agent of the both sexes present invention prepared is directly added into after Corii Bovis seu Bubali softens, and is simultaneously introduced the NaCl of 2%, is gradually lowered pH to about 3.1 afterwards, adds 4% chromium powder and carries out conventional tanning, can make the Cr in waste liquid2O3Being reduced to 269.5 mg/L by the 2754.6mg/L of common process, chlorine ion concentration is by the 14337.9 of common process
Mg/L is reduced to 3111.9 mg/L, and wet blue leather shrinkage temperature reaches plant produced requirement (95 DEG C) simultaneously, and resultant leather quality is unaffected.
Present disclosure is not limited to cited by embodiment, and the conversion of any equivalence that technical solution of the present invention is taked by those of ordinary skill in the art by reading description of the invention, the claim being the present invention is contained.
Claims (7)
1. the preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes, it is characterised in that:
Realized by following steps:
Step one: the sodium allylsulfonate of 2 ~ 5g is dissolved in 4 ~ 10g water formation solution, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 9 ~ 13g, acrylic acid 6 ~ 8g, Ammonium persulfate. 1 ~ 2g, sodium sulfite 0.2 ~ 0. in equipped with the 100mL there-necked flask of agitator and condensing unit
5g and water 12 ~ 17g, is warming up to 70 ~ 80 DEG C, and the allyl sulphonic acid sodium solution in dropping step one, 20 ~ 40min drips off, isothermal reaction 3 ~ 5h；
Step 3: regulating pH after cooling is 4.0 ~ 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes the most according to claim 1, it is characterised in that:
Realized by following steps:
Step one: 5g sodium allylsulfonate be dissolved in 10g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 9.4g, acrylic acid 6g, Ammonium persulfate. 1g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.25g, water 15.6g, be warming up to 70 DEG C, dropping sodium allylsulfonate, 40min drips off, isothermal reaction 5h；
Step 3: regulating pH after cooling is 4.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes the most according to claim 1, it is characterised in that:
Realized by following steps:
Step one: 2g sodium allylsulfonate be dissolved in 4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 12.5g, acrylic acid 8g, Ammonium persulfate. 1.7g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.4g, water 16g, be warming up to 80 DEG C, dropping sodium allylsulfonate, 20min drips off, isothermal reaction 3h；
Step 3: regulating pH after cooling is 5.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes the most according to claim 1, it is characterised in that:
Realized by following steps:
Step one: 2.68g sodium allylsulfonate be dissolved in 5.3g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 10g, acrylic acid 6.4g, Ammonium persulfate. 1.2g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.3g, water 14.7g, be warming up to 75 DEG C, dropping sodium allylsulfonate, 30min drips off, isothermal reaction 4h；
Step 3: regulating pH after cooling is 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes the most according to claim 1, it is characterised in that:
Realized by following steps:
Step one: 4.2g sodium allylsulfonate be dissolved in 8.4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 11.3g, acrylic acid 7.2g, Ammonium persulfate. 1.8g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.45g, water 12.3g, be warming up to 80 DEG C, dropping sodium allylsulfonate, 40min drips off, isothermal reaction 5h；
Step 3: regulating pH after cooling is 4.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
The preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes the most according to claim 1, it is characterised in that:
Realized by following steps:
Step one: 2g sodium allylsulfonate be dissolved in 4g water, adds in constant pressure funnel after stirring and dissolving；
Step 2: add diallyldimethylammonium chloride 12.5g, acrylic acid 6.8g, Ammonium persulfate. 1.3g in equipped with the 100mL there-necked flask of agitator and condensing unit, sodium sulfite 0.3g, water 16.9g, be warming up to 75 DEG C, dropping sodium allylsulfonate, 20min drips off, isothermal reaction 4h；
Step 3: regulating pH after cooling is 6.0, discharging, prepares the few salt pickling less chrome tannage auxiliary agent of both sexes.
7. the few salt pickling less chrome tannage auxiliary agent of both sexes that the preparation method of the few salt pickling less chrome tannage auxiliary agent of both sexes as claimed in claim 1 prepares.
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| CN109651565B (en) * | 2018-12-14 | 2020-10-16 | 陕西科技大学 | Amphoteric polymer, intermediate and organic chrome-free tanning leather fatting agent containing amphoteric polymer |
| CN109628663B (en) * | 2018-12-17 | 2021-11-23 | 兴业皮革科技股份有限公司 | Preparation process of wet cow blue leather |
| CN109627376B (en) * | 2019-01-14 | 2021-02-05 | 嘉兴学院 | Amphoteric polymer auxiliary agent, preparation method and application thereof |
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| CN101086026A (en) * | 2007-06-08 | 2007-12-12 | 陕西科技大学 | End carboxyl super branched polymer as high absorption chrome tanning adjuvant and its synthesis method |
| CN101240354A (en) * | 2008-03-12 | 2008-08-13 | 河南大学 | Acrylic resin/SiO2 nano composite tanning agent and preparation method thereof |
| CN101545016A (en) * | 2009-04-01 | 2009-09-30 | 陕西科技大学 | Preparation method of cationic aldehyde-containing polymer/montmorillonite nano-composite tanning agent |
| CN101619366A (en) * | 2009-07-21 | 2010-01-06 | 陕西科技大学 | Preparation method of amphoteric vinyl polymer/ZnO nanocomposite tanning agent |
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