CN106755629A - A kind of preparation method of leather composite tanning agent - Google Patents
A kind of preparation method of leather composite tanning agent Download PDFInfo
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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
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Abstract
The invention discloses a kind of preparation method of leather composite tanning agent, belong to leather processing technology field.The present invention is first by wheat bran,Rice chaff etc. dries rear and deionized water sealing and fermenting,The stirring reactions such as supernatant and EDC.HCL are collected by centrifugation after defibrination process,Mixture is filtered again,Concentration,Obtain concentrate,Pulverized and sieved after attapulgite is calcined again,Collect the sievings of milling such as sieving particle A and humic acid,Gained sieving particle and concentrate are mixed into filtering again,Filter residue and filtrate are collected respectively,Filtrate and diethanol amine etc. are put into heating response in reactor,Add filter residue stirring reaction,Material is collected out in finally discharging,Leather composite tanning agent can be obtained,Between obtained leather composite tanning agent of the invention is easy to penetrate into fiber,Play filling retanning,And it is stiff to overcome the leather body that traditional retanning agent can cause,Crust leather fiber embrittlement phenomenon,To the feel of leather,Dyeability and finished leather wearability have no adverse effects,With preferable market popularization value.
Description
Technical field
The invention discloses a kind of preparation method of leather composite tanning agent, belong to leather processing technology field.
Background technology
Retanning occupies considerable position in modern leather industry, is most crucial operation in tanning production, quilt
Leather circle is described as " Golden Touch ", and especially for light leather, same leather embryo is solid by using different retanning methods both to can be made into
Upper leather, it is also possible to produce soft and full clothing leather.The quality of Retanning Materials determines the quality of retanning effect, not only right
Finished leather performance has material impact, and also plays very important effect to its quality and class.Therefore, it is various in recent years multiple
Tanning agent is obtained for large development.
Retanning agent various types, wherein acrylic resin retanning agent are a classes with fastest developing speed, are also modernization leather life
A most widely used class in product.Acrylic retanning agents are（Methyl）Acrylic acid and other vinyl monomers, auxiliary agent etc., by certainly
A kind of copolymer type macromolecule tanning agent obtained by base copolyreaction, carboxyl on its side chain can with collagen peptide chain on it is various
There is chemical bond in the chromic salts in group and chrome leather, be the high molecular retanning agent that a kind of binding ability is strong, filling effect is good,
Simultaneously can be poor with selective filling, reduction position so that whole skin reaches unanimity, and improves the utilization rate of leather.However, this kind of retanning
It is stiff that agent is easily caused crust leather, makes crust leather fiber embrittlement, and finished leather wearability declines, and produces losing colour effect, therefore, development performance is excellent
Retanning agent different, with conspicuous characteristics is always one of target of Leather Chemicals research.
The content of the invention
Present invention mainly solves technical problem：Crust leather is easily caused for existing leather composite tanning agent stiff, make crust leather
Fiber embrittlement, finished leather wearability declines, and produces the defect of effect of losing colour, there is provided one kind is carried by carrying out fermentation to wheat bran and rice chaff
Organic matter therein and cellulose substances are taken, increases amino and carboxyl-content, using I-hydroxybenzotriazole etc. to extract
It is modified, increases penetrating power, surface active is then carried out to attapulgite and is modified, and load over-expense compound, improves reaction
The active and abundant degree of branching, and mix with modified extract, increase the conjugation with chromic salts, play what is protected and consolidate to color
Effect, so that the method that leather composite tanning agent is obtained.Wheat bran, rice chaff etc. are first dried rear and deionized water sealing and fermenting by the present invention,
The stirring reactions such as supernatant and EDC.HCL are collected by centrifugation after defibrination process, then by mixture filtering, concentration, obtain concentrate, will
Attapulgite pulverizes and sieves after calcining, the sieving of milling such as collection sieving particle A and humic acid, then by gained sieving particle and concentrates
Liquid mixes filtering, and filter residue and filtrate are collected respectively, and filtrate and diethanol amine etc. are put into heating response in reactor, adds filter
Material is collected out in slag stirring reaction, finally discharging, you can obtain leather composite tanning agent, and the obtained leather composite tanning agent of the present invention is easy to infiltration
To between fiber, playing filling retanning, and overcome that the leather body that traditional retanning agent can cause is stiff, crust leather fiber embrittlement phenomenon,
Feel, dyeability and finished leather wearability to leather have no adverse effects, with preferable market popularization value.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）Count by weight, take 40~45 parts of wheat bran, 25~27 parts of rice chaff, 16~18 parts of dregs of beans, 9~12 parts of yeast extracts,
3~5 parts of potassium dihydrogen phosphates and 1~3 part of ammonium sulfate, stir, by mixture natural drying 1~2 day, in placing into container,
To added in container dry after mixture quality 15~25% deionized water, sealing container, temperature in holding container for 36~
42 DEG C, standing for fermentation 6~8 days；
（2）After above-mentioned fermentation ends, fermenting mixture in container is put into carries out defibrination in stone mill, collects slurries, then will slurry
Liquid is put into centrifuge, and 10~15min is centrifuged with 1100r/min, collects supernatant, is counted by weight, is taken on 50~55 parts
Clear liquid, 13~16 parts of EDC.HCL, 7~9 parts of I-hydroxybenzotriazoles and 1~3 part of Raney's nickel, first by supernatant, EDC.HCL and
Raney's nickel is put into the there-necked flask with agitator and thermometer, is protected using nitrogen, with 150r/min stirring 20~
25min；
（3）After above-mentioned stirring terminates, there-necked flask is placed in water-bath, design temperature is 40~45 DEG C, by above-mentioned weight
I-hydroxybenzotriazole in number is put into there-necked flask, continues to stir 3~5h, room temperature is then naturally cooled to, to three mouthfuls
Mixture in flask is filtered, collect filtered fluid, and filtered fluid is put into concentration tank be concentrated into original volume 70~
75%, concentrate is collected, it is standby；
（4）Take attapulgite to be put into calcining furnace, design temperature is 900~1100 DEG C, calcines 1~2h, cools to room temperature with the furnace,
Calcined material is taken out and is put into crushing in pulverizer, cross 200 mesh sieves, collect sieving particle A, counted by weight, in mass ratio 1:
3:14, APES, humic acid and sieving particle A are put into milling tank, milled 2~3h, mistake with 300r/min
300 mesh sieves, collect sieving particle；
（5）Count by weight, take 45~50 parts of steps（3）Standby concentrate, 23~26 parts of above-mentioned sieving particles, 18~22 parts
Maleic anhydride and 9~12 parts of diethanol amine, first by step（3）Standby concentrate is well mixed with above-mentioned sieving particle,
Filtered after standing 30~40min, filter residue and filtrate are collected respectively, filtrate, maleic anhydride and diethanol amine are put into reaction
In kettle, design temperature is 75~80 DEG C, and 40~50min is stirred with 160r/min, then is cooled to 40~45 DEG C, adds filter residue,
Material is collected out in 6~8h of stirring reaction, discharging, you can obtain leather composite tanning agent.
Application process of the invention is：Count by weight first, take 10~20 parts of wet blues of shaving, 20~40 parts
Water, 0.15~0.24 part of mass fraction is 15% formic acid solution feeding rotary drum, opens rotary drum and rotates 15~20min, discharges rotary drum
Middle mixed liquor, then counts by weight, takes 15~30 parts of water, 0.1~0.3 part of sodium formate, 0.4~0.6 part of sodium bicarbonate, 2~4
The obtained leather composite tanning agent of part present invention, is rotated further 60~80min of rotary drum, carries out retanning procedures, treats after the completion of retanning, discharges
Mixed liquor in rotary drum, adds the water that wet blue quality 100~150%, temperature in rotary drum is 50~60 DEG C, is rotated further rotary drum
15~20min, washing step is carried out to wet blue in rotary drum, is finally taken out the wet blue after washing and is dried naturally.Through inspection
Survey, the obtained leather composite tanning agent of the present invention has preferably filling retanning effect, and after leather is used to fill retanning, leather anti-tensile is strong
Spend up to 25~30N/mm2, up to 60~70N/mm, leather hand feeling is soft, and grain is careful flexible, while after retanning for tearing strength
Leather color inhibition and color fastness grade effectively improve finished leather anti-wear performance up to 4~5 grades, and finished leather is less prone to phenomenon of losing colour,
Service life is extended 1~3 year compared with the leather of the traditional retanning agent of addition.
The beneficial effects of the invention are as follows：
（1）Obtained leather composite tanning agent of the invention has preferable peptizaiton to leather, can penetrate into the collagen of leather
In fiber, strengthen the retanning effects such as the fullness and intensity of leather, and crust leather will not be caused stiff and crust leather fiber embrittlement phenomenon；
（2）After there is obtained leather composite tanning agent of the invention good compatibility, leather to be used to fill retanning, soft, grain
Face is careful flexible, and finished leather wearability is preferable, and does not influence the dyeability of leather, the need for meeting contemporary process hides.
Specific embodiment
Count by weight first, take 40~45 parts of wheat bran, 25~27 parts of rice chaff, 16~18 parts of dregs of beans, 9~12 parts of yeast
Medicinal extract, 3~5 parts of potassium dihydrogen phosphates and 1~3 part of ammonium sulfate, stir, and by mixture natural drying 1~2 day, place into appearance
In device, the deionized water of mixture quality 15~25%, sealing container, the temperature in holding container after being dried to addition in container
It is 36~42 DEG C, standing for fermentation 6~8 days；Then after above-mentioned fermentation ends, fermenting mixture in container is put into stone mill
Row defibrination, collects slurries, then slurries are put into centrifuge, and 10~15min is centrifuged with 1100r/min, collects supernatant, by weight
Amount number meter, takes 50~55 portions of supernatants, 13~16 parts of EDC.HCL, 7~9 parts of I-hydroxybenzotriazoles and 1~3 part of Raney's nickel,
First supernatant, EDC.HCL and Raney's nickel are put into the there-necked flask with agitator and thermometer, are protected using nitrogen, with
150r/min stirs 20~25min；After above-mentioned stirring terminates, there-necked flask is placed in water-bath, design temperature be 40~
45 DEG C, the I-hydroxybenzotriazole in above-mentioned parts by weight is put into there-necked flask, continues to stir 3~5h, it is then naturally cold
But to room temperature, the mixture in there-necked flask is filtered, collects filtered fluid, and filtered fluid is put into concentration tank is concentrated into
The 70~75% of original volume, collect concentrate, standby；Take attapulgite again to be put into calcining furnace, design temperature is 900~1100
DEG C, 1~2h is calcined, cool to room temperature with the furnace, calcined material is taken out and is put into crushing in pulverizer, 200 mesh sieves are crossed, collect sieving
Grain A, counts, in mass ratio 1 by weight:3:14, APES, humic acid are put into sieving particle A and milled
In tank, milled 2~3h with 300r/min, cross 300 mesh sieves, collect sieving particle；Finally count by weight, take on 45~50 parts
Standby concentrate, 23~26 parts of above-mentioned sieving particles, 18~22 parts of maleic anhydrides and 9~12 parts of diethanol amine are stated, first
Above-mentioned standby concentrate is well mixed with above-mentioned sieving particle, is filtered after standing 30~40min, filter residue and filter are collected respectively
Liquid, filtrate, maleic anhydride and diethanol amine are put into reactor, and design temperature is 75~80 DEG C, is stirred with 160r/min
Mix 40~50min, then be cooled to 40~45 DEG C, add filter residue, material is collected out in 6~8h of stirring reaction, discharging, you can skin
Leather retanning agent.
Example 1
Count by weight first, take 40 parts of wheat bran, 25 parts of rice chaff, 16 parts of dregs of beans, 9 parts of yeast extracts, 3 parts of potassium dihydrogen phosphates and
1 part of ammonium sulfate, stirs, by mixture natural drying 1 day, in placing into container, to added in container dry after mixture
The deionized water of quality 15%, sealing container, the temperature in holding container is 36 DEG C, standing for fermentation 6 days；Then in above-mentioned fermentation
After end, fermenting mixture in container is put into carries out defibrination in stone mill, collects slurries, then slurries are put into centrifuge, with
1100r/min is centrifuged 10min, collects supernatant, counts by weight, takes 50 portions of supernatants, 13 parts of EDC.HCL, 7 parts of 1- hydroxyls
BTA and 1 part of Raney's nickel, supernatant, EDC.HCL and Raney's nickel are first put into three mouthfuls of burnings with agitator and thermometer
In bottle, protected using nitrogen, 20min is stirred with 150r/min；After above-mentioned stirring terminates, there-necked flask is placed in water-bath
In, design temperature is 40 DEG C, and the I-hydroxybenzotriazole in above-mentioned parts by weight is put into there-necked flask, continues to stir 3h,
Room temperature then is naturally cooled to, the mixture in there-necked flask is filtered, collect filtered fluid, and filtered fluid is put into concentration
The 70% of original volume is concentrated into tank, concentrate is collected, it is standby；Take attapulgite again to be put into calcining furnace, design temperature is 900
DEG C, 1h is calcined, cool to room temperature with the furnace, calcined material is taken out and is put into crushing in pulverizer, 200 mesh sieves are crossed, sieving particle A is received,
Count by weight, in mass ratio 1:3:14, APES, humic acid and sieving particle A are put into milling tank,
Milled 2h with 300r/min, cross 300 mesh sieves, collect sieving particle；Finally count by weight, take 45 parts of above-mentioned standby concentrations
Liquid, 23 parts of above-mentioned sieving particles, 18 parts of maleic anhydrides and 9 parts of diethanol amine, first by above-mentioned standby concentrate with it is above-mentioned
Sieving particle is well mixed, and is filtered after standing 30min, filter residue and filtrate is collected respectively, by filtrate, maleic anhydride and diethyl
Hydramine is put into reactor, and design temperature is 75 DEG C, and 40min is stirred with 160r/min, then is cooled to 40 DEG C, adds filter residue,
Material is collected out in stirring reaction 6h, discharging, you can obtain leather composite tanning agent.
This example operation is easy, when using, counts by weight first, takes 10 parts of wet blues of shaving, 20 parts of water, 0.15
Part mass fraction is 15% formic acid solution feeding rotary drum, opens rotary drum and rotates 15min, and mixed liquor in discharge rotary drum is subsequent by weight
Amount number meter, takes 15 parts of water, and 0.1 part of sodium formate, 0.4 part of sodium bicarbonate, leather composite tanning agent obtained in 2 parts of present invention is rotated further
Rotary drum 60min, carries out retanning procedures, treats after the completion of retanning, and mixed liquor in discharge rotary drum adds wet blue quality in rotary drum
100%th, temperature is 50 DEG C of water, is rotated further rotary drum 15min, and washing step is carried out to wet blue in rotary drum, finally takes out washing
Wet blue afterwards dries naturally.After testing, the obtained leather composite tanning agent of the present invention has preferably filling retanning effect, skin
After leather is used to fill retanning, leather tensile strength reaches 25N/mm2, up to 60N/mm, leather hand feeling is soft, and grain is careful for tearing strength
It is flexible, while the leather color inhibition and color fastness grade after retanning effectively improve finished leather anti-wear performance, and finished leather up to 4 grades
Phenomenon of losing colour is less prone to, service life is extended 1 year compared with the leather of the traditional retanning agent of addition.
Example 2
Count by weight first, take 43 parts of wheat bran, 26 parts of rice chaff, 17 parts of dregs of beans, 11 parts of yeast extracts, 4 parts of potassium dihydrogen phosphates
And 2 parts of ammonium sulfate, stir, by mixture natural drying 1 day, in placing into container, to added in container dry after mix
The deionized water of amount of substance 20%, sealing container, the temperature in holding container is 39 DEG C, standing for fermentation 7 days；Then in above-mentioned hair
After ferment terminates, fermenting mixture in container is put into carries out defibrination in stone mill, collects slurries, then slurries are put into centrifuge,
13min is centrifuged with 1100r/min, supernatant is collected, counted by weight, take 53 portions of supernatants, 15 parts of EDC.HCL, 8 parts of 1- hydroxyls
Base BTA and 2 parts of Raney's nickels, supernatant, EDC.HCL and Raney's nickel are first put into three mouthfuls with agitator and thermometer
In flask, protected using nitrogen, 23min is stirred with 150r/min；After above-mentioned stirring terminates, there-necked flask is placed in water-bath
In, design temperature is 43 DEG C, and the I-hydroxybenzotriazole in above-mentioned parts by weight is put into there-necked flask, continues to stir 4h,
Room temperature then is naturally cooled to, the mixture in there-necked flask is filtered, collect filtered fluid, and filtered fluid is put into concentration
The 73% of original volume is concentrated into tank, concentrate is collected, it is standby；Take attapulgite again to be put into calcining furnace, design temperature is 1000
DEG C, 1h is calcined, cool to room temperature with the furnace, calcined material is taken out and is put into crushing in pulverizer, 200 mesh sieves are crossed, collect sieving particle
A, counts by weight, and in mass ratio 1:3:14, APES, humic acid and sieving particle A are put into milling tank
In, milled 2h with 300r/min, 300 mesh sieves are crossed, collect sieving particle；Finally count by weight, take 480 parts it is above-mentioned standby dense
Contracting liquid, 25 parts of above-mentioned sieving particles, 20 parts of maleic anhydrides and 11 parts of diethanol amine, first by above-mentioned standby concentrate with it is upper
State sieving particle to be well mixed, filtered after standing 35min, filter residue and filtrate are collected respectively, by filtrate, maleic anhydride and two
Monoethanolamine is put into reactor, and design temperature is 78 DEG C, and 45min is stirred with 160r/min, then is cooled to 43 DEG C, adds filter
Material is collected out in slag, stirring reaction 7h, discharging, you can obtain leather composite tanning agent.
This example operation is easy, when using, counts by weight first, takes 15 parts of wet blues of shaving, 30 parts of water, 0.19
Part mass fraction is 15% formic acid solution feeding rotary drum, opens rotary drum and rotates 18min, and mixed liquor in discharge rotary drum is subsequent by weight
Amount number meter, takes 23 parts of water, and 0.2 part of sodium formate, 0.5 part of sodium bicarbonate, leather composite tanning agent obtained in 3 parts of present invention is rotated further
Rotary drum 70min, carries out retanning procedures, treats after the completion of retanning, and mixed liquor in discharge rotary drum adds wet blue quality in rotary drum
125%th, temperature is 55 DEG C of water, is rotated further rotary drum 18min, and washing step is carried out to wet blue in rotary drum, finally takes out washing
Wet blue afterwards dries naturally.After testing, the obtained leather composite tanning agent of the present invention has preferably filling retanning effect, skin
After leather is used to fill retanning, leather tensile strength reaches 28N/mm2, up to 65N/mm, leather hand feeling is soft, and grain is careful for tearing strength
It is flexible, while the leather color inhibition and color fastness grade after retanning effectively improve finished leather anti-wear performance, and finished leather up to 4 grades
Phenomenon of losing colour is less prone to, service life is extended 2 years compared with the leather of the traditional retanning agent of addition.
Example 3
Count by weight first, take 45 parts of wheat bran, 27 parts of rice chaff, 18 parts of dregs of beans, 12 parts of yeast extracts, 5 parts of potassium dihydrogen phosphates
And 3 parts of ammonium sulfate, stir, by mixture natural drying 2 days, in placing into container, to added in container dry after mix
The deionized water of amount of substance 25%, sealing container, the temperature in holding container is 42 DEG C, standing for fermentation 8 days；Then in above-mentioned hair
After ferment terminates, fermenting mixture in container is put into carries out defibrination in stone mill, collects slurries, then slurries are put into centrifuge,
15min is centrifuged with 1100r/min, supernatant is collected, counted by weight, take 55 portions of supernatants, 16 parts of EDC.HCL, 9 parts of 1- hydroxyls
Base BTA and 3 parts of Raney's nickels, supernatant, EDC.HCL and Raney's nickel are first put into three mouthfuls with agitator and thermometer
In flask, protected using nitrogen, 25min is stirred with 150r/min；After above-mentioned stirring terminates, there-necked flask is placed in water-bath
In, design temperature is 45 DEG C, and the I-hydroxybenzotriazole in above-mentioned parts by weight is put into there-necked flask, continues to stir 5h,
Room temperature then is naturally cooled to, the mixture in there-necked flask is filtered, collect filtered fluid, and filtered fluid is put into concentration
The 75% of original volume is concentrated into tank, concentrate is collected, it is standby；Take attapulgite again to be put into calcining furnace, design temperature is 1100
DEG C, 2h is calcined, cool to room temperature with the furnace, calcined material is taken out and is put into crushing in pulverizer, 200 mesh sieves are crossed, collect sieving particle
A, counts by weight, and in mass ratio 1:3:14, APES, humic acid and sieving particle A are put into milling tank
In, milled 3h with 300r/min, 300 mesh sieves are crossed, collect sieving particle；Finally count by weight, take 50 parts it is above-mentioned standby dense
Contracting liquid, 26 parts of above-mentioned sieving particles, 22 parts of maleic anhydrides and 12 parts of diethanol amine, first by above-mentioned standby concentrate with it is upper
State sieving particle to be well mixed, filtered after standing 40min, filter residue and filtrate are collected respectively, by filtrate, maleic anhydride and two
Monoethanolamine is put into reactor, and design temperature is 80 DEG C, and 50min is stirred with 160r/min, then is cooled to 45 DEG C, adds filter
Material is collected out in slag, stirring reaction 8h, discharging, you can obtain leather composite tanning agent.
This example operation is easy, when using, counts by weight first, takes 20 parts of wet blues of shaving, 40 parts of water, 0.24
Part mass fraction is 15% formic acid solution feeding rotary drum, opens rotary drum and rotates 20min, and mixed liquor in discharge rotary drum is subsequent by weight
Amount number meter, takes 30 parts of water, and 0.3 part of sodium formate, 0.6 part of sodium bicarbonate, leather composite tanning agent obtained in 4 parts of present invention is rotated further
Rotary drum 80min, carries out retanning procedures, treats after the completion of retanning, discharges mixed liquor in rotary drum, then by wet blue quality in addition rotary drum
150%th, temperature is 60 DEG C of water, is rotated further rotary drum 20min, and washing step is carried out to wet blue in rotary drum, finally takes out washing
Wet blue afterwards dries naturally.After testing, the obtained leather composite tanning agent of the present invention has preferably filling retanning effect, skin
After leather is used to fill retanning, leather tensile strength reaches 30N/mm2, up to 70N/mm, leather hand feeling is soft, and grain is careful for tearing strength
It is flexible, while the leather color inhibition and color fastness grade after retanning effectively improve finished leather anti-wear performance, and finished leather up to 5 grades
Phenomenon of losing colour is less prone to, service life is extended 3 years compared with the leather of the traditional retanning agent of addition.
Claims (1)
1. a kind of preparation method of leather composite tanning agent, it is characterised in that specific preparation process is：
（1）Count by weight, take 40~45 parts of wheat bran, 25~27 parts of rice chaff, 16~18 parts of dregs of beans, 9~12 parts of yeast extracts,
3~5 parts of potassium dihydrogen phosphates and 1~3 part of ammonium sulfate, stir, by mixture natural drying 1~2 day, in placing into container,
To added in container dry after mixture quality 15~25% deionized water, sealing container, temperature in holding container for 36~
42 DEG C, standing for fermentation 6~8 days；
（2）After above-mentioned fermentation ends, fermenting mixture in container is put into carries out defibrination in stone mill, collects slurries, then will slurry
Liquid is put into centrifuge, and 10~15min is centrifuged with 1100r/min, collects supernatant, is counted by weight, is taken on 50~55 parts
Clear liquid, 13~16 parts of EDC.HCL, 7~9 parts of I-hydroxybenzotriazoles and 1~3 part of Raney's nickel, first by supernatant, EDC.HCL and
Raney's nickel is put into the there-necked flask with agitator and thermometer, is protected using nitrogen, with 150r/min stirring 20~
25min；
（3）After above-mentioned stirring terminates, there-necked flask is placed in water-bath, design temperature is 40~45 DEG C, by above-mentioned weight
I-hydroxybenzotriazole in number is put into there-necked flask, continues to stir 3~5h, room temperature is then naturally cooled to, to three mouthfuls
Mixture in flask is filtered, collect filtered fluid, and filtered fluid is put into concentration tank be concentrated into original volume 70~
75%, concentrate is collected, it is standby；
（4）Take attapulgite to be put into calcining furnace, design temperature is 900~1100 DEG C, calcines 1~2h, cools to room temperature with the furnace,
Calcined material is taken out and is put into crushing in pulverizer, cross 200 mesh sieves, collect sieving particle A, counted by weight, in mass ratio 1:
3:14, APES, humic acid and sieving particle A are put into milling tank, milled 2~3h, mistake with 300r/min
300 mesh sieves, collect sieving particle；
（5）Count by weight, take 45~50 parts of steps（3）Standby concentrate, 23~26 parts of above-mentioned sieving particles, 18~22 parts
Maleic anhydride and 9~12 parts of diethanol amine, first by step（3）Standby concentrate is well mixed with above-mentioned sieving particle,
Filtered after standing 30~40min, filter residue and filtrate are collected respectively, filtrate, maleic anhydride and diethanol amine are put into reaction
In kettle, design temperature is 75~80 DEG C, and 40~50min is stirred with 160r/min, then is cooled to 40~45 DEG C, adds filter residue,
Material is collected out in 6~8h of stirring reaction, discharging, you can obtain leather composite tanning agent.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810741335.7A CN108823336A (en) | 2016-12-30 | 2016-12-30 | Suitable for improving the leather composite tanning agent of leather wearability |
| CN201611265221.7A CN106755629B (en) | 2016-12-30 | 2016-12-30 | A kind of preparation method of leather composite tanning agent |
| CN201810741347.XA CN108823337A (en) | 2016-12-30 | 2016-12-30 | The preferable leather composite tanning agent of compatibility |
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| CN201611265221.7A CN106755629B (en) | 2016-12-30 | 2016-12-30 | A kind of preparation method of leather composite tanning agent |
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| CN201810741335.7A Division CN108823336A (en) | 2016-12-30 | 2016-12-30 | Suitable for improving the leather composite tanning agent of leather wearability |
| CN201810741347.XA Division CN108823337A (en) | 2016-12-30 | 2016-12-30 | The preferable leather composite tanning agent of compatibility |
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| CN201611265221.7A Expired - Fee Related CN106755629B (en) | 2016-12-30 | 2016-12-30 | A kind of preparation method of leather composite tanning agent |
| CN201810741347.XA Pending CN108823337A (en) | 2016-12-30 | 2016-12-30 | The preferable leather composite tanning agent of compatibility |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371182A (en) * | 2018-09-17 | 2019-02-22 | 许昌鑫瑞德化工科技有限公司 | A kind of leather chemicals production purification characterization processes |
| CN110628967A (en) * | 2019-09-26 | 2019-12-31 | 四川省翰彬霖鞋业有限公司 | Wear-resistant leather and preparation method thereof |
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| US20100275380A1 (en) * | 2007-11-23 | 2010-11-04 | N-Zyme Biotec Gmbh | Agent and method for tanning skins and pelts |
| CN102127606A (en) * | 2010-01-19 | 2011-07-20 | 深圳市绿微康生物工程有限公司 | Method for retanning leather by using bioenzyme |
| WO2012055480A1 (en) * | 2010-10-28 | 2012-05-03 | Clariant International Ltd | Non metal tanning |
| CN105950795A (en) * | 2016-06-28 | 2016-09-21 | 陈建峰 | Method for preparing leather retanning agent through rapeseed meal modification |
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| CN100376693C (en) * | 2002-10-23 | 2008-03-26 | 戢祖健 | Process for producing pigskin garment leather |
| CN100369947C (en) * | 2006-04-20 | 2008-02-20 | 陕西科技大学 | Emulsion grafting copolymerization process of preparing retanning and fat liquoring agent for leather |
| CN105838829B (en) * | 2016-05-03 | 2018-08-28 | 安徽银河皮革有限公司 | Environmentally friendly leather composite tanning agent based on protein hydrolysate |
| CN106038456A (en) * | 2016-06-30 | 2016-10-26 | 郭舒洋 | Preparation method for compound natural smooth hair conditioner |
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2016
- 2016-12-30 CN CN201810741335.7A patent/CN108823336A/en active Pending
- 2016-12-30 CN CN201611265221.7A patent/CN106755629B/en not_active Expired - Fee Related
- 2016-12-30 CN CN201810741347.XA patent/CN108823337A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100275380A1 (en) * | 2007-11-23 | 2010-11-04 | N-Zyme Biotec Gmbh | Agent and method for tanning skins and pelts |
| CN102127606A (en) * | 2010-01-19 | 2011-07-20 | 深圳市绿微康生物工程有限公司 | Method for retanning leather by using bioenzyme |
| WO2012055480A1 (en) * | 2010-10-28 | 2012-05-03 | Clariant International Ltd | Non metal tanning |
| CN105950795A (en) * | 2016-06-28 | 2016-09-21 | 陈建峰 | Method for preparing leather retanning agent through rapeseed meal modification |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371182A (en) * | 2018-09-17 | 2019-02-22 | 许昌鑫瑞德化工科技有限公司 | A kind of leather chemicals production purification characterization processes |
| CN110628967A (en) * | 2019-09-26 | 2019-12-31 | 四川省翰彬霖鞋业有限公司 | Wear-resistant leather and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108823336A (en) | 2018-11-16 |
| CN106755629B (en) | 2018-09-14 |
| CN108823337A (en) | 2018-11-16 |
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