CN110358874A - Hair-protection and hair-removing composition preparation and its guarantor's hair depilating method - Google Patents
Hair-protection and hair-removing composition preparation and its guarantor's hair depilating method Download PDFInfo
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- CN110358874A CN110358874A CN201810311641.7A CN201810311641A CN110358874A CN 110358874 A CN110358874 A CN 110358874A CN 201810311641 A CN201810311641 A CN 201810311641A CN 110358874 A CN110358874 A CN 110358874A
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Classifications
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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
- C14C1/00—Chemical treatment prior to tanning
- C14C1/06—Facilitating unhairing, e.g. by painting, by liming
Abstract
The present invention provides a kind of preparation of hair-protection and hair-removing composition and its protect hair depilating method, the purpose is to protect hair depilation for existing ox-hide, using sulphide process, there are still divalent sulfurs in a large amount of waste water to be discharged, and the dissolution damage of hair uses organic thiol compound for main component, it loses hair or feathers by auxiliary agent collaboration, depilation carries out at lower ph, and separately carried out with expansion process, residual hair can be efficiently separated, dissolution is reduced.Therefore, compared with existing sulfide protects hair technique, which further reduced pollution on the environment, especially be reduction of hydrogen sulfide gas discharge, and improve the quality and yield of recycling hair, improve enterprise's by-product value.
Description
Technical field
The present invention relates to a kind of preparation of hair-protection and hair-removing composition and its hair depilating method is protected, belongs to leather manufacture technical field, it should
Method suitable for clean leather-making key processing, be suitble to ox-hide hair recycling, guarantee environment without sulfide, without lime and cement
Separation.
Technical background
Depilation is an important procedure of process hides beam house, and process hides depilation includes the method for physics, chemistry or biological enzyme
Raw material ox-hide is handled, hair and epidermolytic are made or is detached from the process of corium.Currently, being used in development of China leather industry production
Two kinds of depilating methods, one is the depilation of traditional inorganic sulphide (such as vulcanized sodium, NaHS) alkaline process, this method and process at
Ripe, rapidly, quality is stablized for depilation, low in cost, easy to operate, easily controllable, applied widely, but has a large amount of vulcanization
Object, slag wool, keratin hydrolyzate enter waste liquid, cause to indexs such as the divalent sulfur of waste liquid, chemical oxygen consumption (COC), ammonia nitrogen, suspended matters
Larger impact；Another kind is to protect hair depilation, and use is first immunized and sloughs hair with sulfide again.Later approach reduces a large amount of hair
Dissolution, is that waste liquor contamination index substantially reduces.However, in order to guarantee completely removing for hair and epidermis, the later period needs for implementing
Want larger amount of sulfide that could complete, wherein influenced by high pH and sulfide, not only the divalent sulfur, chemical oxygen consumption (COC) of waste water,
Ammonia nitrogen is reduced not enough, and the recycling of hair is deposited also in problem.
Sulfhydryl compound (such as mercaptoethanol, thioacetic acid, sulfydryl benzene etc.) is a not fresh project for losing hair or feathers.Although
Thioacetic acid slightly has toxicity, and human contact simultaneously can damage liver, kidney after absorbing a large amount of high concentration thioacetic acid, more likely causes thin
Cytoplasmic process becomes, but thioacetic acid vapour pressure is only 1.33kPa, about 123 DEG C of boiling point, miscible with water；And used in traditional soda depilation
Sulfide generate sulphur hydracid, boiling point be -60.4 DEG C, vapour pressure is up to 2026.5kPa.Therefore, in contrast, sulfydryl
Acetic acid is more stable, and volatility is small, is a kind of desirable substitute.
It is the method for a reduction sulfide dosage using sulfhydryl compound depilation.Sulfhydryl compound is reducing substances,
Cystine linkage can be eliminated.But sulfydryl price lattice are high currently on the market, are directly used in water field that dosage is larger, it is difficult to be given birth to
Produce actual use.It is to apply depilatory agent on flesh noodles for another method, it can be maximum
Degree reduces depilatory agent dosage.However, ox-hide weight is big, manual operations is difficult, and the infiltration of dermatotome thickness depilatory agent is difficult,
It can not be by an operation.Epilation operation is carried out using the low liquid in water field, by bath foam pH control below 12, it is possible to reduce the damage of hair.
Using auxiliary agent is added in low liquid, increases friction and guarantee depilation mechanical force.It is applied with modern times drum Nei Baomao depilation and sulfide and lime
Deposited dehairing process is compared, and the technique is few compared with cortex loss, and leather products quality is stablized, and sludge separation simplifies, a small amount of discharge of wastewater,
Cost for wastewater treatment reduces.
The present invention is main depilation ingredient for acetic acid with isothiourea.Isothiourea is not easy well oxygen in air for acetic acid stability
Change, it can be with long-term preservation.By using when with alkali effect production sodium thioglycolate, obtain depilatory agent, and be applied to process hides
Depilation workshop section carries out production comparison with inorganic sulphide depilation, and discovery works well, and does not influence downstream process operation quality.
Summary of the invention
Object of the present invention is to: hair depilation is protected for existing ox-hide method for leather-making and still uses more sulfide, is utilized
Depilatory agent of the invention loses hair or feathers, it can be seen that in the component other than sulfhydryl compound, should also have thiocarbamide, urea simultaneously
In the presence of；In fact, the depilatory agent implies various ingredients, triethanolamine has loose collagen to act in component, and ethyl alcohol is as all groups
The solvent divided increases product stability and dispersion permeability, and magnesium chloride can increase interfibrillar substance and protect Mao Zuoyong.Therefore, this
A little components help depilation to sulfhydryl compound.
Conventional depilation and expansion are carried out separating treatment by the invention, reduce Alkaline solubilization and the destruction of hair.This method can
The damage of ox hair is greatly reduced, it is made to obtain the maximization of resourcebility.Low liquid depilation processing can save material consumption and mention
High efficiency increases the friction removal of hair.
The purpose of the present invention is realized by following measures, wherein the number of each raw material is unless otherwise specified, it is weight
Number.
A kind of hair-protection and hair-removing composition is made of following components parts by weight:
Isothiourea is for 20~30 parts of acetic acid
5~10 parts of ethyl alcohol
5~10 parts of magnesium chloride
2~5 parts of triethanolamine
45~58 parts of water.
A kind of preparation method of hair-protection and hair-removing composition, includes the following steps:
1) in alkaline-resisting semicircle open stainless steel cauldron, 80 parts of thiocarbamide is added, 120 parts of sodium chloroacetate, 100 parts of water, is heated up
To 80 DEG C, 1~2 hour obtained isothiourea of stirring is for the mixed solution based on acetic acid；
2) it in alkaline-resisting semicircle open stainless steel cauldron, calculates and 20~30 parts of isothioureas described in claim 1 is added for second
Acid, 35~43 parts of water, temperature adjustment are then added 5~10 parts of ethyl alcohol, stir transparent to solution to 40 DEG C.Slowly add in the solution
The magnesium chloride for entering 5~10 parts adds 2~5 parts of triethanolamines, occurs saturating with acetic acid modulation solution when muddiness to complete miscibility
It is bright, obtain hair-protection and hair-removing composition
A kind of depilating method using hair-protection and hair-removing composition comprises the following sequential steps that (wherein each raw material is according to parts by weight
Meter):
1) water-filling desalination
100 parts of the wet ox rawhide of salt is taken, drum is entered, 200~300 parts 25~30 DEG C of water, 1~2 part of degreasing agent (ten are added in rotary drum
Sodium dialkyl sulfate), 1~2 part of soda ash 0.3~0.5 part of fungicide, turns 60 minutes, stops 60 minutes, turns 60 minutes, control
PH9.0~9.5 stop 6~8 hours, check that skin body bone is soft, and the saturating heart of notch drains salt discharge；
2) depilation is handled
50 parts 35~40 DEG C of water, 3~4 parts of depilatory agent agent are added in rotary drum, 1~2 part of soda ash turns 30 minutes, it is small to stop 4~6
When, turn 30 minutes, pH9.5~10, draining, be added 2~3 parts of magnesia, rotate 40~60 minutes, depilation, be added 50 part 35~
40 DEG C of water turns 15 minutes, rouses out, filters hair；
3) fleshing
The skin of depilation processing is subjected to fleshing, removes the most of hair for being adhered to flesh noodles；
4) depilation expansion
It is added 100 parts 25~28 DEG C of water in rotary drum, 1~2 part of depilatory agent agent, 2~3 parts of swelling agents (or solid hydroxide
Sodium), it rotates 60 minutes, 100 parts 25~28 DEG C of water is added, rotate 30 minutes, stop 30 minutes, turn 5 minutes within every 2 hours later,
It totally 16~24 hours, rouses, fleshing, split, weighs, later operative material dosage is based on this weight out.
The present invention has the advantage that
The present invention makes because not using vulcanized sodium, NaHS and lime, therefore the pollution that can be greatly reduced in leather making process completely
The waste water of technique discharge is more easy to handle；The present invention carries out conventional depilation at lower ph, is separated with subsequent expansion
Processing, reduces Alkaline solubilization and the destruction of hair；The damage of ox hair can be greatly reduced in this method, it is made to obtain resourcebility most
Bigization.
Specific embodiment
The present invention is specifically described below by embodiment, it is necessary to which indicated herein is that following embodiment is only used
In invention is further explained, it should not be understood as limiting the scope of the invention, the people that is skilled in technique in the field
Member can make some nonessential modifications and adaptations to the present invention according to the content of foregoing invention.
A kind of embodiment 1: preparation of hair-protection and hair-removing composition
Each raw material as described below is in parts by weight:
In alkaline-resisting semicircle open stainless steel cauldron, 10 parts of thiocarbamide are added, 15 parts of sodium chloroacetate, 12.5 parts of water, is warming up to
80 DEG C, 2 hours obtained isothioureas of stirring are for the mixed solution based on acetic acid.40 DEG C are cooled to, 35 parts of water, 5 parts of ethyl alcohol stirs
It is transparent to solution.The magnesium chloride for being slowly added to 5 parts in the solution adds 2 parts of triethanolamines, when occurring muddy to complete miscibility
It is transparent with acetic acid modulation solution, obtain hair-protection and hair-removing composition.
A kind of embodiment 2: preparation of hair-protection and hair-removing composition
Each raw material as described below is in parts by weight:
In alkaline-resisting semicircle open stainless steel cauldron, 12 parts of thiocarbamide are added, 18 parts of sodium chloroacetate, 15 parts of water, is warming up to 80
DEG C, 2 hours obtained isothioureas of stirring are for the mixed solution based on acetic acid.40 DEG C are cooled to, 35 parts of water, 8 parts of ethyl alcohol, stirring is extremely
Solution is transparent.The magnesium chloride for being slowly added to 8 parts in the solution adds 3 parts of triethanolamines, uses when occurring muddy to complete miscibility
Acetic acid modulation solution is transparent, obtains hair-protection and hair-removing composition.
A kind of embodiment 3: depilating method of hair-protection and hair-removing composition
Each raw material as described below is in parts by weight:
1) water-filling desalination
Wet 100 parts of ox rawhide of every 25 pounds of summer salt are taken, drum is entered, the water of 200~300 parts 25~30 DEG C of addition in rotary drum, 1~
2 parts of degreasing agents (lauryl sodium sulfate), 1~2 part of soda ash 0.3~0.5 part of fungicide, turn 60 minutes, stop 60 minutes, turns 60
Minute, pH9.0~9.5 are controlled, stop 6~8 hours, check that skin body bone is soft, the saturating heart of notch drains salt discharge.
2) depilation is handled
50 parts 35~40 DEG C of water, 3 parts of depilatory agent agent are added in rotary drum, 2 parts of soda ash turn 30 minutes, stop 4 hours, turn 30 points
2 parts of magnesia are added in clock, pH 9.5, draining, rotate 60 minutes, and 50 parts 35 DEG C of water is added in depilation, turn 15 minutes, rouse out,
Filter hair.
3) fleshing
The skin of depilation processing is subjected to fleshing, removes the most of hair for being adhered to flesh noodles.
4) depilation expansion
100 parts 28 DEG C of water, 2 parts of depilatory agent agent are added in rotary drum, 2 parts of swelling agents (or solid sodium hydroxide) rotate 60 points
100 parts 28 DEG C of water is added in clock, rotates 30 minutes, stops 30 minutes, turns 5 minutes within every 2 hours later, totally 16 hours, rouses, go out
Meat, split, weighing, later operative material dosage is based on this weight.
A kind of embodiment 4: depilating method of hair-protection and hair-removing composition
Each raw material as described below is in parts by weight:
1) water-filling desalination
Wet 100 parts of ox rawhide of every 25 pounds of winter salt are taken, drum is entered, 200 parts 25 DEG C of water, 2 parts of degreasing agents (ten are added in rotary drum
Sodium dialkyl sulfate), 2 parts of soda ash 0.5 part of fungicide, turn 60 minutes, stop 60 minutes, turn 60 minutes, control pH 9.5, stop 8
Hour, check that skin body bone is soft, the saturating heart of notch drains salt discharge.
2) depilation is handled
50 parts 35 DEG C of water, 4 parts of depilatory agent agent are added in rotary drum, 3 parts of soda ash turn 30 minutes, stop 6 hours, turn 30 minutes, pH
It is 10,3 parts of magnesia are added in draining, rotate 60 minutes, and 50 parts 35 DEG C of water is added in depilation, turns 15 minutes, rouses out, filter hair.
3) fleshing
The skin of depilation processing is subjected to fleshing, removes the most of hair for being adhered to flesh noodles.
4) depilation expansion
100 parts 28 DEG C of water, 2 parts of depilatory agent agent are added in rotary drum, 3 parts of swelling agents (or solid sodium hydroxide) rotate 60 points
100 parts 28 DEG C of water is added in clock, rotates 30 minutes, stops 30 minutes, turns 5 minutes within every 2 hours later, totally 24 hours, rouses, go out
Meat, split, weighing, later operative material dosage is based on this weight.
250 25 pounds of cattle hides lose hair or feathers according to embodiment 4, filter effluent analysis result after hair.
Following table is the preceding result of expansion after 250 25 pounds of cattle hides depilations
| Process | COD/(g/L) | Hair shaft weight/kg | SS/(g/L) | S2-/(mg/L) | pH |
| Existing hair saving process | 3.22 | 1.70 | 3.21 | 10.0 | 11.5 |
| Normal hair saving process | 5.04 | 1.04 | 8.52 | 50.0 | 13.0 |
Above specific embodiments of the present invention have been described, but the present invention is not limited to above description.For this field
Technical staff for, the equal modification and substitution of any pair of the technical program are all within the scope of the invention.Therefore, exist
Made equal transformation and modification without departing from the spirit and scope of the invention, all should be contained within the scope of the invention.
Claims (3)
1. a kind of hair-protection and hair-removing composition, it is characterised in that: be made of following components parts by weight:
Isothiourea is for 20~30 parts of acetic acid
5~10 parts of ethyl alcohol
5~10 parts of magnesium chloride
2~5 parts of triethanolamine
45~58 parts of water.
2. a kind of preparation method of hair-protection and hair-removing composition, characterized by the following steps:
1) in alkaline-resisting semicircle open stainless steel cauldron, 80 parts of thiocarbamide is added, 120 parts of sodium chloroacetate, 100 parts of water, is heated up
To 80 DEG C, stirs 1~2 hour and be made with isothiourea for the mixture solution based on acetic acid；
2) in alkaline-resisting semicircle open stainless steel cauldron, 20~30 parts of mixture solutions, 35~43 parts of water, temperature adjustment to 40
DEG C, 5~10 parts of ethyl alcohol is then added, stirs transparent to solution；It is slowly added to 5~10 parts of magnesium chloride in the solution to complete
It is miscible, 2~5 parts of triethanolamines are added, it is transparent with acetic acid modulation solution when occurring muddy, obtain hair-protection and hair-removing composition.
3. a kind of depilating method using hair-protection and hair-removing composition as described in claim 1, it is characterised in that: walked including following sequence
Suddenly, wherein each raw material in parts by weight:
1) water-filling desalination
100 parts of the wet ox rawhide of salt is taken, drum is entered, 200~300 parts 25~30 DEG C of water, 1~2 part of degreasing agent (ten are added in rotary drum
Sodium dialkyl sulfate), 1~2 part of soda ash 0.3~0.5 part of fungicide, turns 60 minutes, stops 60 minutes, turns 60 minutes, control
PH9.0~9.5 stop 6~8 hours, check that skin body bone is soft, and the saturating heart of notch drains salt discharge；
2) depilation is handled
50 parts 35~40 DEG C of water, 3~4 parts of depilatory agent agent are added in rotary drum, 1~2 part of soda ash turns 30 minutes, it is small to stop 4~6
When, turn 30 minutes, pH9.5~10, draining, be added 2~3 parts of magnesia, rotate 40~60 minutes, depilation, be added 50 part 35~
40 DEG C of water turns 15 minutes, rouses out, filters hair；
3) fleshing
The skin of depilation processing is subjected to fleshing, removes the most of hair for being adhered to flesh noodles；
4) depilation expansion
It is added 100 parts 25~28 DEG C of water in rotary drum, 1~2 part of depilatory agent agent, 2~3 parts of swelling agents (or solid hydroxide
Sodium), it rotates 60 minutes, 100 parts 25~28 DEG C of water is added, rotate 30 minutes, stop 30 minutes, turn 5 minutes within every 2 hours later,
It totally 16~24 hours, rouses, fleshing, split, weighs, later operative material dosage is based on this weight out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311641.7A CN110358874A (en) | 2018-04-09 | 2018-04-09 | Hair-protection and hair-removing composition preparation and its guarantor's hair depilating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311641.7A CN110358874A (en) | 2018-04-09 | 2018-04-09 | Hair-protection and hair-removing composition preparation and its guarantor's hair depilating method |
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| Publication Number | Publication Date |
|---|---|
| CN110358874A true CN110358874A (en) | 2019-10-22 |
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| CN201810311641.7A Pending CN110358874A (en) | 2018-04-09 | 2018-04-09 | Hair-protection and hair-removing composition preparation and its guarantor's hair depilating method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19933968A1 (en) * | 1999-07-20 | 2001-01-25 | Trumpler Gmbh & Co Chem Fab | Aid for skin disintegration and hair loosening of animal skins |
| CN101265505A (en) * | 2008-05-08 | 2008-09-17 | 四川大学 | Ashless and alkali sulfide free depilation liming treatment method for preparing leather from raw sheep skin |
| CN101798604A (en) * | 2010-02-10 | 2010-08-11 | 广东省石油化工研究院 | Method for preparing leather through hair-saving unhairing |
| CN102505056A (en) * | 2011-10-21 | 2012-06-20 | 中国皮革和制鞋工业研究院 | Hair-protection unhairing and liming waste liquor recycling method |
-
2018
- 2018-04-09 CN CN201810311641.7A patent/CN110358874A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19933968A1 (en) * | 1999-07-20 | 2001-01-25 | Trumpler Gmbh & Co Chem Fab | Aid for skin disintegration and hair loosening of animal skins |
| CN101265505A (en) * | 2008-05-08 | 2008-09-17 | 四川大学 | Ashless and alkali sulfide free depilation liming treatment method for preparing leather from raw sheep skin |
| CN101798604A (en) * | 2010-02-10 | 2010-08-11 | 广东省石油化工研究院 | Method for preparing leather through hair-saving unhairing |
| CN102505056A (en) * | 2011-10-21 | 2012-06-20 | 中国皮革和制鞋工业研究院 | Hair-protection unhairing and liming waste liquor recycling method |
Non-Patent Citations (3)
| Title |
|---|
| 杜志明: "《用化学产品达标生产及质量检测分析标准实用手册 第1册》", 31 March 2003, 吉林摄影出版社 * |
| 詹益兴: "《精细化工新产品》", 30 June 2007, 科学技术文献出版社 * |
| 魏文德: "《有机化工原料大全 第3卷》", 31 August 1990, 化学工业出版社 * |
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Application publication date: 20191022 |
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