CN107201414A - A kind of not pickling chrome-free tanning technique based on many metal combination tanning agents - Google Patents
A kind of not pickling chrome-free tanning technique based on many metal combination tanning agents Download PDFInfo
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- CN107201414A CN107201414A CN201710413427.8A CN201710413427A CN107201414A CN 107201414 A CN107201414 A CN 107201414A CN 201710413427 A CN201710413427 A CN 201710413427A CN 107201414 A CN107201414 A CN 107201414A
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- 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
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Abstract
The present invention relates to tanning chemistry and field of engineering technology, a kind of not pickling chrome-free tanning technique based on many metal combination tanning agents is provided, first softening pelt is pre-processed, then not pickling chrome-free tanning is carried out, the white wet careful consolidation of grain made by the not pickling chrome-free tanning technique based on many metal combination tanning agents, color is uniformly full, remove from office body soft and full flexible, shrinkage temperature is more than 90 DEG C, and the not pickling chrome-free tanning technique based on many metal combination tanning agents is in implementation process, do not use chromate-containing materials, and operated without pickling, chloride ion content in waste tanning liquor can be not only set to be reduced to below 300mg/L, and also eliminate pollution and harm of the heavy metal chromium to environment, in addition the technique also simplify the technological process of production, shorten the production cycle, reduce production cost, it is a kind of process for cleanly preparing with good industrialization prospect.
Description
Technical field
The present invention relates to tanning chemistry and field of engineering technology, more particularly to a kind of not soaking based on many metal combination tanning agents
Sour chrome-free tanning technique.
Background technology
With national economy level and living standards of the people more and more higher, people to the concern of living environment also increasingly
Greatly, country and governments at all levels are also more and more perfect to environmental protection legislation, and leather industry pollution problem has become whole industry can
The huge challenge of sustainable development.Leather industry is to use water rich and influential family, according to statistics, and leather industry waste water yield is about 1.42 within 2014
Hundred million m3, its complicated component, containing multiple pollutants such as chromium, sulphur, chlorine, ammonia nitrogen, organic matters, difficulty of governance is big, cost is high, therefore such as
Process hides water pollution, which is mitigated or eliminated, in what becomes the most important thing of leather industry research.In the newest execution of China《Process hides and hair
Skin processing industry pollution discharge standard》(GB30486-2013) various pollutant loads in leather-making waste water are made that sternly in
Lattice are limited, and wherein total chrome content must not exceed 1.5mg/l, and content of 6-valence Cr ions need to be less than 0.2mg/L, and chloride ion content need to be less than
3000mg/L。
Defect and the deficiency such as the pollution of chromium brought for chrome tanning and chromium resource waste, people turn to sight to Chrome-free
The research of tanning agent and tannage, and carried out substantial amounts of research and probe, such as aldehyde tannage, oil tanning, vegetable tanning, other non-chromium metal tans (such as
Zirconium, aluminium, titanium, iron, magnesium, zinc, rare earth etc.) and various Chrome-free Combined tannings etc..Regrettably, using above-mentioned chrome-free tanning agent and its tan
Leather obtained by method, its quality can not all compare favourably with chrome leather.
Meanwhile, it is typically required before current leather tanning and carries out pickling processing to adjust the pH value of skin, at pickling
Pelt of the enzyme after soft is immersed in the mixed solution of sulfuric acid and salt by reason, carries out hide fiber, tanning material is easy to penetrate so that be made
Leather it is soft careful, still, during pickling need to use substantial amounts of neutral salt, can to avoid leather from " acid swollen " phenomenon occur
Neutral salt adds the infiltration for being both unfavorable for tanning tanning agent at initial stage, and the intensity of serious infringement skin, if neutral salt consumption is excessive, again
Skin dehydration, finished leather can be made flat thin, not plentiful；Simultaneously because employ pickling processing, then in the tanning later stage, tanning agent and collagen with
With reference to for it is main when, must now neutralize acid, make collagen carboxyl dissociation, chrome tanning agent molecule increase, but carry alkali operation it is slightly improper,
Then it is easy to the quality problems such as coarse, the chromium spot of grain occur；And pickling can also bring the pollution of chlorion；Therefore, soak
Sour process adds the use of material, increases technique controlling difficulty, and environment is had adverse effect on.And if not pickling is straight
Row leather tanning is tapped into, final obtained leather occurs that tan is impermeable, flexibility is poor, leather is stiff, color burn phenomenon, no
Light color leather or clothing leather requirement are disclosure satisfy that, the technique scope of application is limited, it is difficult to production application.
Therefore, how to realize no pickling and the process for tanning without the dual beneficial advantage of chrome tanning is that leatherwork technical field is real
Existing quality assurance and the key technical problem of environmentally friendly effectiveness.For the technical problem, number of patent application is 201210269479.X
Chinese patent disclose it is a kind of based on Zirconium-aluminum-titanium coordinate tanning agent chrome-reduced leather method, no leaching can be realized by this method
The purpose of acid, few chrome tanning, but its final obtained leather still there are the quality problems such as color burn, and discharge waste water according to
So contain chromium, it is impossible to effectively realize cleanly production.
Brought to solve pickling in traditional leather industry, tanning chemistry men propose salt-free pickling and not pickling tan
The method of system, although achieve good achievement in research, but be still difficult in production application.Therefore, exploitation is based on more
The not pickling bating method without chrome of metal combination tanning agent has great importance, and not only can thoroughly eliminate pollution of chromium problem, and
And chloride ion content in waste liquid can also be greatly lowered, improve the level of clean production in leather making process.
The content of the invention
Therefore, for it is above-mentioned the problem of, the present invention proposes a kind of not pickling chrome-free tanning based on many metal combination tanning agents
Technique, the white wet careful consolidation of grain made by the not pickling chrome-free tanning technique based on many metal combination tanning agents,
Color is uniformly full, and leather body is soft and full flexible, and shrinkage temperature is and described based on many metal combination tanning agents more than 90 DEG C
Not pickling chrome-free tanning technique does not use chromate-containing materials in implementation process, and is operated without pickling, tanning is given up
Chloride ion content is reduced to below 300mg/L in liquid, and also eliminates pollution and harm of the heavy metal chromium to environment, in addition institute
State technique and also simplify the technological process of production, shorten the production cycle, reduce production cost, be that one kind has good industrialization
The process for cleanly preparing of prospect.
To realize above-mentioned technical problem, the solution that the present invention takes is：It is a kind of based on many metal combination tanning agents not
Pickling chrome-free tanning technique, in turn includes the following steps：
Step 1, preparation softening pelt, weigh the weight of softening pelt, subsequent treatment process step are determined by the weight
The weight of middle agents useful for same；
Step 2, pretreatment (reagent dosage is based on the percentage of softening pelt weight)：Add 30-50%'s in rotary drum
22-26 DEG C of temperature in water, drum, rotates 20min, adds 2-4% pretreating agent, rotates 30-60min；The pretreating agent thing
First with water according to pretreating agent：Water=1:5 ratio is diluted；The pretreating agent changes for this tal fibre Chemical Co., Ltd.
Property glutaraldehyde SYNEKTAN GTA, without formaldehyde, mass fraction is about 50%, or the pretreating agent is limited for many chemical industry of inscription
The substituted type syntans TANINTAN BOV of company, mass fraction is about 42%；
Step 3, tanning (reagent dosage is based on the percentage of softening pelt weight)：The many of 25-45% are added in step 2
The electrolyte-resistant oil of metal combination tanning agent, 0.5-1%, rotates 300-360min, stands overnight；
Step 4, carry alkali (reagent dosage by softening pelt weight percentage based on)：Sodium formate 1.0- is added in step 3
1.5%, interior 28-32 DEG C of the temperature of drum rotates 30min, and it is 4.2-4.5 to add saleratus solution regulation PH, rotates 60min, then
1-3% fluoropolymer resin tanning agent is added, 60-90min is rotated；Wherein described saleratus solution is sodium bicarbonate water according to little Su
Beat：Water=1:20 dilution proportion is obtained；
Step 5, fluid infusion heating (reagent dosage is based on the percentage of softening pelt weight)：120- is added in step 4
150% warm water, is warming up to 42-46 DEG C, rotates 180-240min, discharge opeing；
Step 6, washing (reagent dosage is based on the percentage of softening pelt weight)：Add 150-200%'s in rotary drum
22-26 DEG C of water, rotates 5-10min, discharge opeing, goes out drum.
It is further that many metal combination tanning agents are that the Zirconium-aluminum-titanium that Jin Kun Chemical Co., Ltd.s of Mianzhu City produce is more
Gold complex, mass fraction is about 40%.
It is further that many metal combination tanning agents are that iron-zirconium-aluminium that Jin Kun Chemical Co., Ltd.s of Mianzhu City produce is matched somebody with somebody
Tanning agent is closed, mass fraction is about 40%.
It is further that saleratus solution described in step 4 is to add several times, softening pelt weight 0.3- is added every time
0.5% saleratus solution, each interval time is 20-30min, and terminal PH is 4.2-4.5.
It is further that fluoropolymer resin tanning agent described in step 4 is the polymer tanning agent of Sima Chemical Co., Ltd.
NOVALTAN MAP, mass fraction is about 30%.
By using preceding solution, the beneficial effects of the invention are as follows：
1st, in the not pickling chrome-free tanning technique for coordinating tanning agent based on Zirconium-aluminum-titanium, the material previously treated used closes for phenols
Into tanning agent BOV or modified glutaraldehyde GTA, phenols syntans can by the active group and complexing of metal ion of intramolecular,
The alkaline resistance properties of tanning agent is improved, promotes tanning agent in intracutaneous infiltration and combination, so as to improve the shrinkage temperature of crust leather, is prevented effectively from
Surface is combined and the too fast and impermeable phenomenon of tan during not pickling；And modified glutaraldehyde has promotion to many metal combination tanning properties
Effect, can promote tanning agent in intracutaneous infiltration, the aldehyde radical of its intramolecular can carry out covalent bond with the amino on collagen side chain,
Part weaker in multi-metal complex can also be replaced simultaneously, strengthen tanning agent tanning effect, form more steady between tropocollagen molecule
Fixed cross-bond so that crust leather shrinkage temperature is obviously improved, when being prevented effectively from not pickling surface combine and too fast and tan not
Saturating phenomenon；Meanwhile, in present invention process in the case of not pickling, only matched somebody with somebody by many metal combination tanning agents and electrolyte-resistant oil
Conjunction can just efficiently accomplish tanning, improve tanning quality, and the tanning stage need not contain chrome tanning agent using any, and using in colourless
Many metal combination tanning agents of transparency liquid carry out tanning, crust leather will not be made colored with its tanning, can effectively obtain white wet leather, phase
Dye light color, not pickling chrome-free tanning work of the invention are difficult in post-production for turquoise crust leather made from prior art chrome tanning
White crust leather is easy to dye light color in post-production made from skill, then crust leather made from present invention process can be applied to manufacture light color
Leather；Therefore, it is described based on Zirconium-aluminum-titanium coordinate tanning agent not pickling chrome-free tanning technique can omit pickling procedure after can also
Enough be effectively ensured leather effective tanning, be made leather superior physical properties quality, suitable for light color remove from office the features such as；And it is described
Not pickling chrome-free tanning technique based on many metal combination tanning agents, eliminates pickling procedure so that whole technological process is simpler,
More convenient operation, and life cycle of the product is shortened, production cost is saved, with very strong practicality.
2nd, it is careful tight by the white wet grain of not pickling chrome-free tanning technique preparation based on many metal combination tanning agents
Real, color is uniformly full, and leather body is soft and full flexible, and many metal combination tanning agents are by many kinds of metal ions phase such as zirconium, aluminium
Mutually coordinate and form, there is between them collaboration tanning effect so that after white wet leather has preferably hydrothermal stability and be good
Continuous processing characteristics.
3. described in the not pickling chrome-free tanning technique based on many metal combination tanning agents, with many metal combination pickling, tanning works
Skill, conventional chrome tanning process are compared, the clean manufacturing advantage with highly significant, in the waste tanning liquor produced by the technique
The contamination indexs such as COD, chloride ion content and colourity are significantly reduced, and particularly chloride ion content can be effectively reduced to 300mg/
Below L, has reached the direct emission request of national standard, and the technique in implementation process without using chromate-containing materials, from
Pollution and harm of the chromium to environment are eliminated on source, is a kind of process for cleanly preparing with huge industrialization prospect.
Embodiment
Describe embodiments of the present invention in detail below with reference to specific embodiment, how skill is applied to the present invention whereby
Art means solve technical problem, and reach the implementation process of technique effect and can fully understand and implement according to this.If not referring in particular to
It is bright, the conventional meanses that the technological means employed in embodiment is well known to those skilled in the art, the reagent used and production
Product are also available commercial.The various processes and method not being described in detail are conventional methods as known in the art, used
The source of reagent, trade name and it is necessary to list its constituent person, indicates on the first appearance.
Embodiment 1
A kind of not pickling chrome-free tanning technique based on many metal combination tanning agents, in turn includes the following steps：
Step 1, preparation softening pelt, weigh the weight of softening pelt, subsequent treatment process step are determined by the weight
The parts by weight of middle agents useful for same；
Step 2, softening pelt pretreatment (reagent dosage is based on the percentage of softening pelt weight)：Added in rotary drum
22-26 DEG C of temperature in 50% water, drum, rotates 20min, adds and uses water 1:(many chemical industry of inscription have 3% pretreating agent of 5 dilutions
The TANINTAN BOV of limit company), rotate 60min；
Step 3, tanning (reagent dosage is based on the percentage of softening pelt weight)：Addition 40% is more golden in step 2
Category coordinates tanning agent (Zirconium-aluminum-titanium of Jin Kun Chemical Co., Ltd.s coordinates tanning agent), 1% electrolyte-resistant oil (to have up to the scientific and technological share of prestige
The GHL of limit company), 360min is rotated, is stood overnight；
Step 4, carry alkali (reagent dosage by softening pelt weight percentage based on)：In step 3 add 1.2% formic acid
30 DEG C of temperature in sodium (regular industrial sodium formate), drum, rotates 30min, adds with water 1:Sodium bicarbonate (the regular industrial of 20 dilutions
Sodium bicarbonate) solution, regulation pH is 4.3-4.4, rotates 60min, adding 2% fluoropolymer resin tanning agent, (Si Mahuaxue is limited
The NOVALTAN MAP of company), rotate 90min；
Step 5, fluid infusion heating (reagent dosage is based on the percentage of softening pelt weight)：150% is added in step 4
Warm water, is warming up to 45 DEG C, rotates 180min, discharge opeing；
Step 6, washing (reagent dosage is based on the percentage of softening pelt weight)：Added in rotary drum 200% 22-26
DEG C water, rotates 10min, discharge opeing, goes out drum.
Comparative example 1
A kind of not pickling chrome-free tanning technique based on many metal combination tanning agents without pretreating process, successively including as follows
Step：
Step 1, preparation softening pelt, weigh the weight of softening pelt, subsequent treatment process step are determined by the weight
The parts by weight of middle agents useful for same；
Step 2, tanning (reagent dosage is based on the percentage of softening pelt weight)：Addition 40% is more golden in step 2
Category coordinates tanning agent (Zirconium-aluminum-titanium of Jin Kun Chemical Co., Ltd.s coordinates tanning agent), 1% electrolyte-resistant oil (to have up to the scientific and technological share of prestige
The GHL of limit company), 360min is rotated, is stood overnight；
Step 3, carry alkali (reagent dosage by softening pelt weight percentage based on)：In step 3 add 1.2% formic acid
Sodium (regular industrial sodium formate), interior 30 DEG C of temperature rotates 30min, adds with water 1:Sodium bicarbonate (the regular industrial little Su of 20 dilutions
Beat) solution, regulation pH is 4.3-4.4, rotates 60min, adds 2% fluoropolymer resin tanning agent (Sima Chemical Co., Ltd.
NOVALTAN MAP), rotate 90min；
Step 4, fluid infusion heating (reagent dosage is based on the percentage of softening pelt weight)：150% is added in step 4
Warm water, is warming up to 45 DEG C, rotates 180min, discharge opeing；
Step 5, washing (reagent dosage is based on the percentage of softening pelt weight)：Added in rotary drum 200% normal temperature
Water, rotates 10min, discharge opeing, goes out drum.
The process for tanning of comparative example 1 and the not pickling chrome-free tanning technique based on many metal combination tanning agents described in embodiment 1
Basically identical, difference is：The pretreatment process of step 2 described in embodiment 1 is not contained in comparative example 1.
Comparative example 2
A kind of pickling chrome-free tanning technique based on many metal combination tanning agents, in turn includes the following steps：
Step 1, preparation softening pelt, weigh the weight of softening pelt, subsequent treatment process step are determined by the weight
The parts by weight of middle agents useful for same；
Step 2, pickling (reagent dosage is based on the percentage of softening pelt weight)：The water of addition 50%, interior in rotary drum
Warm normal temperature, the sodium chloride (regular industrial salt) of addition 8% rotates 10min, adds and uses water 1:0.8% formic acid of 10 dilutions is (often
The industrial formic acid of rule), 30min is rotated, point 4 addition water 1:20 dilution 1.2% sulfuric acid (regular industrial sulfuric acid), every time between
Every 30min, pH to 2.5 is adjusted, 90min is then rotated；
Step 3, tanning (reagent dosage is based on the percentage of softening pelt weight)：The both sexes three of addition 1% in step 2
Poly cyanamid (the TANINTAN RX-L of Ming Zhong Chemical Co., Ltd.s), rotates 30min, adds 2% aldehyde tanning agent (BASF
The Relugan GTW of work Co., Ltd), 40min is rotated, the Zirconium-aluminum-titanium for adding 15% coordinates tanning agent, the leaching of 0.5% phosphate
Sour oil (the TRUPON PEM of Tang Pule Chemical Co., Ltd.s), rotation 60min, the Zirconium-aluminum-titanium cooperation tanning agent of addition 15%,
0.5% phosphate pickling oil, rotates 60min, adds 1% water-soluble polymer tanning agent (BASF Chemical Co., Ltd.
Relugan RF), rotate 40min；
Step 4, carry alkali (reagent dosage by softening pelt weight percentage based on)：Add in step 3 and use water 1:15 is dilute
The saleratus solution released, regulation pH is 4.0-4.2, and the addition for carrying sodium bicarbonate during alkali is carried out several times, is added every time
The sodium bicarbonate of pickled skin parts by weight 0.4%, each interval time is 25min, reaches after regulation pH, stands overnight；
Step 5, fluid infusion heating (reagent dosage is based on the percentage of softening pelt weight)：150% is added in step 4
Warm water, is warming up to 40 DEG C, rotates 120min, discharge opeing；
Step 6, washing (reagent dosage is based on the percentage of softening pelt weight)：Added in rotary drum 200% normal temperature
Water, rotates 10min, discharge opeing, goes out drum.
The process for tanning of comparative example 2 and the not pickling chrome-free tanning technique based on many metal combination tanning agents described in embodiment 1
Basically identical, difference is：The pretreatment process of step 2 described in embodiment 1 is not contained in comparative example 3, while comparative example 3 is in system
After standby softening pelt, pickling procedure has been carried out before tanning.
Comparative example 3
A kind of not pickling less chrome tannage technique based on many metal combination tanning agents, in turn includes the following steps：
Step 1, preparation softening pelt, weigh the weight of softening pelt, subsequent treatment process step are determined by the weight
The parts by weight of middle agents useful for same；
Step 2, many metal combination tans (reagent dosage is based on the percentage of softening pelt weight)：Added in rotary drum
100% water, interior temperature normal temperature, the Zirconium-aluminum-titanium for adding 2% coordinates tanning agent, rotates 20min, and the Zirconium-aluminum-titanium for adding 3% coordinates
Tanning agent and 0.5% kaolin (Shanghai Jing Zhu Chemical Co., Ltd.s), rotate 60min, and the Zirconium-aluminum-titanium for adding 3% coordinates tan
Agent and 0.5% kaolin, rotate 120min, add sodium bicarbonate regulation and carry alkali, adjust pH to 2.5.
Step 3, chrome tanning (reagent dosage is based on the percentage of softening pelt weight)：In step 2 add 3% chrome tanning agent
(Chongqing the people live in plenty Chemical Co., Ltd.), rotates 60min；
Step 4, carry alkali (reagent dosage by softening pelt weight percentage based on)：In step 3 add 1.0% formic acid
Sodium, interior 30 DEG C of temperature rotates 30min, adds with water 1:The saleratus solution of 20 dilutions, regulation pH is 3.8, rotates 60min；
Step 5, fluid infusion heating (reagent dosage is based on the percentage of softening pelt weight)：150% is added in step 4
Warm water, is warming up to 40 DEG C, rotates 180min, stands overnight, and next day rotates 30min, discharge opeing.
Step 6, washing (reagent dosage is based on the percentage of softening pelt weight)：Added in rotary drum 200% normal temperature
Water, rotates 10min, discharge opeing, goes out drum.
Comparative example 3 is for embodiment 1：Comparative example 3 and embodiment 1 do not use pickling technique, but contrast
Contain chrome tanning in the tanning of example 3.
By the testing result in waste liquid obtained by embodiment 1 and comparative example 1-3 process for tanning about pollutant load, gained
The physical quality detection Comparative result of leather is as shown in table 1 below：
Table 1, testing result contrast table
It is visible according to the comparing result of table 1, compared with the process for tanning without pretreatment of comparative example 1, embodiment 1
Crust leather performance obtained by not pickling chrome-free tanning technique based on many metal combination tanning agents has a distinct increment, and is mainly reflected in crust leather receipts
Contracting temperature increases by more than 10 DEG C, and grain is more preferably careful；Meanwhile, the process for tanning phase of the few chrome tanning of not pickling with comparative example 3
Than, although crust leather shrinkage temperature obtained by the not pickling chrome-free tanning technique based on many metal combination tanning agents of embodiment 1 has dropped
It is low, but crust leather color is more shallow, is adapted to manufacture light color leather, application is wider, and has in terms of ambient pollution burden is reduced
There are more preferably obvious advantage, particularly Chrome-free in waste tanning liquor, colourity is less than 30, has reached national standard《Process hides and fur add
Work industrial water pollution thing discharge standard》Direct discharge standard requirement as defined in (GB 30486-2013)；Therefore, it is of the present invention
The not pickling chrome-free tanning technique based on many metal combination tanning agents there is obvious excellent effect.
In summary, the white wet leather grain made by the not pickling chrome-free tanning technique based on many metal combination tanning agents
The careful consolidation in face, color are uniformly full, and leather body is soft and full flexible, and shrinkage temperature is more than 90 DEG C, and many metals have collaboration
Tanning is acted on so that crust leather has good combination property and properties for follow, and described based on many metal combination tanning agents
Not pickling chrome-free tanning technique in implementation process, do not use chromate-containing materials, and operate without pickling, can not only make tanning
Chloride ion content is reduced to below 300mg/L in waste liquid, and also eliminates pollution and harm of the heavy metal chromium to environment, in addition
The technique also simplify the technological process of production, shorten the production cycle, reduce production cost, be that one kind has good industry
The process for cleanly preparing of change prospect.
Described above, only using the embodiment of this origination techniques content, any those skilled in the art use this wound
Make done modifications and changes, all belong to the scope of the claims of this creation opinion, and be not limited to those disclosed embodiments.
Claims (5)
1. a kind of not pickling chrome-free tanning technique based on many metal combination tanning agents, it is characterised in that in turn include the following steps：
Step 1, preparation softening pelt, weigh the weight of softening pelt, institute in subsequent treatment process step are determined by the weight
With the weight of reagent；
Step 2, pretreatment (reagent dosage is based on the percentage of softening pelt weight)：30-50% water, drum are added in rotary drum
Interior 22-26 DEG C of temperature, rotates 20min, adds 2-4% pretreating agent, rotates 30-60min；The pretreating agent uses water in advance
According to pretreating agent：Water=1:5 ratio is diluted；The pretreating agent is the modification penta 2 of this tal fibre Chemical Co., Ltd.
Aldehyde SYNEKTAN GTA, without formaldehyde, mass fraction is about 50%, or the pretreating agent is Ming Zhong Chemical Co., Ltd.s
Substituted type syntans TANINTAN BOV, mass fraction is about 42%；
Step 3, tanning (reagent dosage is based on the percentage of softening pelt weight)：25-45% many metals are added in step 2
Coordinate tanning agent, 0.5-1% electrolyte-resistant oil, rotate 300-360min, stand overnight；
Step 4, carry alkali (reagent dosage by softening pelt weight percentage based on)：Sodium formate 1.0- is added in step 3
1.5%, interior 28-32 DEG C of the temperature of drum rotates 30min, and it is 4.2-4.5 to add saleratus solution regulation PH, rotates 60min, then
1-3% fluoropolymer resin tanning agent is added, 60-90min is rotated;Wherein described saleratus solution is sodium bicarbonate water according to little Su
Beat：Water=1:20 dilution proportion is obtained；
Step 5, fluid infusion heating (reagent dosage is based on the percentage of softening pelt weight)：Add 120-150%'s in step 4
Warm water, is warming up to 42-46 DEG C, rotates 180-240min, discharge opeing；
Step 6, washing (reagent dosage is based on the percentage of softening pelt weight)：150-200% 22-26 is added in rotary drum
DEG C water, rotate 5-10min, discharge opeing, go out drum.
2. the not pickling chrome-free tanning technique according to claim 1 based on many metal combination tanning agents, it is characterised in that：Institute
It is many gold complexs of Zirconium-aluminum-titanium that Jin Kun Chemical Co., Ltd.s of Mianzhu City produce to state many metal combination tanning agents, and mass fraction is about
40%.
3. the not pickling chrome-free tanning technique according to claim 1 based on many metal combination tanning agents, it is characterised in that：Institute
Iron-zirconium-aluminium cooperation tanning agent that many metal combination tanning agents produce for Jin Kun Chemical Co., Ltd.s of Mianzhu City is stated, mass fraction is about
40%.
4. the not pickling chrome-free tanning technique according to claim 1 based on many metal combination tanning agents, it is characterised in that：Step
Saleratus solution is to add several times described in rapid 4, softening pelt weight 0.3-0.5% saleratus solution is added every time, often
The minor tick time is 20-30min, and terminal PH is 4.2-4.5.
5. the not pickling chrome-free tanning technique according to claim 1 based on many metal combination tanning agents, it is characterised in that：Step
Fluoropolymer resin tanning agent described in rapid 4 is the polymer tanning agent NOVALTAN MAP of Sima Chemical Co., Ltd., mass fraction
About 30%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881818A (en) * | 2021-10-29 | 2022-01-04 | 陕西科技大学 | Tanning method using multi-metal matched tanning agent without pickling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103131803A (en) * | 2011-11-22 | 2013-06-05 | 郑州赛诺生态科技有限公司 | Tanning agent of non-chromium non-aldehyde multi-metal ecological leather and tanning method |
| CN103898252A (en) * | 2012-12-30 | 2014-07-02 | 天津联一科技有限公司 | Novel non-salt and non-acid tanning process of fur |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103131803A (en) * | 2011-11-22 | 2013-06-05 | 郑州赛诺生态科技有限公司 | Tanning agent of non-chromium non-aldehyde multi-metal ecological leather and tanning method |
| CN103898252A (en) * | 2012-12-30 | 2014-07-02 | 天津联一科技有限公司 | Novel non-salt and non-acid tanning process of fur |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113881818A (en) * | 2021-10-29 | 2022-01-04 | 陕西科技大学 | Tanning method using multi-metal matched tanning agent without pickling |
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| CN107201414B (en) | 2019-11-12 |
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