CN103603197A - Method for improving dyeing property of superfine fiber synthetic leather base cloth - Google Patents
Method for improving dyeing property of superfine fiber synthetic leather base cloth Download PDFInfo
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Abstract
The invention relates to a method for improving the dyeing property of superfine fiber synthetic leather base cloth. The method comprises the following steps: adding water into gelatin, stirring to enable the gelatin to expand to obtain a gelatin solution, and adding alkaline protease into the gelatin solution for hydrolysis; adding the superfine fiber synthetic leather base cloth into a rotating drum, and treating the superfine fiber synthetic leather base cloth by acid to obtain surface modified superfine fiber synthetic leather base cloth; adding collagen into the rotating drum, performing graft modification on the collagen with the surface modified superfine fiber synthetic leather base cloth, and reacting to obtain collagen modified superfine fiber synthetic leather base cloth; and adding a dye into the rotating drum to dye the collagen modified superfine fiber synthetic leather base cloth. According to the invention, the superfine fiber synthetic leather base cloth is modified by the collagen, so that the superfine fiber synthetic leather base cloth is covalently modified by the collagen, furthermore, the dyeing performance of the superfine fiber synthetic leather is effectively improved, the dye uptake is up to about 94.21%, and the superfine fiber synthetic leather industry can be favorably developed.
Description
Technical field
The invention belongs to superfine fiber chemical leather applied technical field, be specifically related to a kind of method of improving superfine fiber synthetic leather base cloth dyeability.
Background technology
Superfine fiber chemical leather is to take the high-grade synthetic leather that is similar to natural leather that superfine polyamide fiber makes as elastomer composite as base layer, polyurethane, its superfine polyamide fiber is similar to natural leather protein adhesive fibrillar structure, in conjunction with PU wet polyurethane resin durability is high thoroughly, be the novel field having a high potential, there is good development prospect.
The active group that superfine polyamide fiber contains seldom, only at molecule chain end, contain carboxyl and amino, on strand, there is a large amount of carbochains and amido link, but not containing side chain, so mainly rely on the deposition physical bond of dyestuff self to make fiber colouring when superfine fiber chemical leather dyes, most dyestuffs are difficult to dye, product COLOR FASTNESS after dyeing is poor, and superfine fibre is superfine, specific area is very large, and the amount that consumes dyestuff during dyeing is large.In addition, superfine fiber chemical leather is as a kind of composite, there is larger difference in the dyeability of superfine polyamide fiber and polyurethane, adopt homogencous dyes and single colouring method to be difficult to meet the dyeing requirement of two kinds of compositions simultaneously, can not reach good Color, be necessary so research improves the method for the dyeability of superfine fiber chemical leather.
For above problem, Many researchers has been carried out exploratory development to the modification of superfine fiber chemical leather in recent years, and its effective method is exactly to manage to introduce in superfine fiber chemical leather the dyeability that active group improves superfine fiber chemical leather.By certain chemical modification, increase the active group on base cloth, increase its dyestuff binding site, and then improve the dyeability of superfine fiber chemical leather.At present, researcher is mainly studied from aspects such as dyestuff, dyeing condition, chemical modification and interpolation auxiliary agents for dyeing, although obtained a lot of achievements, but apart from suitability for industrialized production, still having very large gap, is necessary so continuation research improves the method for superfine fiber chemical leather dyeability.
Gelatin is as a kind of both sexes, nontoxic natural biomass polymer substance, and the collagen making after hydrolysis is typical polyampholyte, contains a large amount of amino and carboxyl isoreactivity group, and its hydrophily, biocompatibility and degradation property are good.China is as leather industry big country, all can produce a large amount of discarded leather bits every year, by the gelatin extraction in discarded shavings out and be used, can economize on resources, and reduces environmental pollution, realizes the recycling of discarded leather bits.
Summary of the invention
The object of this invention is to provide a kind of method of improving superfine fiber synthetic leather base cloth dyeability, by increasing the active group on superfine fiber synthetic leather base cloth, and then improved the dyeability of superfine fiber synthetic leather base cloth.
For achieving the above object, the present invention adopts following technical scheme:
The present invention includes following steps:
1) preparation of collagen:
In gelatin, add water, it is 20%～40% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, regulating the pH value of gelatin solution is 8.0～10.0, then at 40～60 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 2～6h, obtains collagen; Wherein, the addition of alkali protease accounts for 0.8%～2.0% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 3000%～6000%, temperature is, under the condition of 35～55 ℃, to adopt acid to process 2～5h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of acid accounts for 10%～20% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 2000%～5000%, pH value is 2.0～9.0, temperature is under the condition of 20～60 ℃, to step 2) rotary drum in add collagen, by collagen graft modification to the superfine fiber synthetic leather base cloth of surface modification, reaction 0.5～4h, obtains collagen-modified superfine fiber synthetic leather base cloth; The consumption of collagen be surface modification superfine fiber synthetic leather base cloth quality 4%～20%;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 2000%～5000%, pH value is 4.5～5.5, temperature is, under the condition of 50～60 ℃, in the rotary drum of step 3), to add dyestuff to collagen-modified superfine fiber synthetic leather base cloth dyeing 1～4h, obtains the superfine fiber synthetic leather base cloth of dyeing; Wherein the consumption of dyestuff is 1%～8% of collagen-modified superfine fiber synthetic leather base cloth quality.
In described step 1), gelatin extracts from discarded leather bits.
PH value in described step 1) adopts sodium hydroxide solution to regulate.
Described step 2) acid in is the concentrated sulfuric acid or the analytically pure formic acid of mass fraction 98%.
PH value in described step 3) adopts sodium hydroxide solution or dilute sulfuric acid to regulate.
In described step 3), before adding collagen in rotary drum, add crosslinking agent and react 0.5-4h, the addition of crosslinking agent accounts for the superfine fiber synthetic leather base cloth quality 1%-18% of surface modification.
Described crosslinking agent be tanning agent F ?90 or tanning agent TWT.
PH value in described step 4) adopts dilute sulfuric acid to regulate.
Dyestuff in described step 4) is ACID DYES or REACTIVE DYES.
The present invention has the following advantages: the present invention, by superfine fiber synthetic leather base cloth is carried out to preliminary treatment, can expose the part active group on base cloth surface; By the collagen that adopts hydrolysis by novo gelatin to make, to superfine fiber synthetic leather base cloth, carry out covalent modified, increased the active group on base cloth, increased the binding site of dyestuff, make its dye-uptake up to 94.21% left and right, effectively improved the dyeability of superfine fiber chemical leather.
Further, the gelatin in the present invention extracts from discarded leather bits, and extracting method is simple and with low cost, has reduced like this environmental pollution, has reasonably utilized refuse, has realized the recycling of discarded leather bits.
Adding in collagen forward direction rotary drum adds crosslinking agent to carry out cross-linking reaction, crosslinking agent is tanning agent F-90 or tanning agent TWT, crosslinking agent can play bridging action collagen is incorporated on superfine fiber synthetic leather base cloth, and then has improved the dye-uptake of base cloth, has improved its dyeability.
The specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail.
In the present invention, liquor ratio all refers to the mass ratio of water and superfine fiber synthetic leather base cloth.
Embodiment 1
1) preparation of collagen:
In gelatin, add water, it is 20% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, adopting 1mol/L sodium hydroxide solution to regulate the pH value of gelatin solution is 8.5, then at 50 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 5h, obtains collagen; Wherein, the addition of alkali protease accounts for 1.0% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 3000%, temperature is, under the condition of 45 ℃, to adopt the concentrated sulfuric acid that mass fraction is 98% to process 4.5h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of the concentrated sulfuric acid is 15% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 2000%, pH value is 4.0, temperature is under the condition of 30 ℃, to step 2) rotary drum in add collagen, by collagen graft modification, to superfine fiber synthetic leather base cloth, reaction 3h, obtains collagen-modified superfine fiber synthetic leather base cloth; Wherein, pH value adopts dilute sulfuric acid to regulate, 10% of the superfine fiber synthetic leather base cloth quality that the consumption of collagen is surface modification;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 5000%, pH value is 4.5, temperature is under the condition of 50 ℃, in the rotary drum of step 3), add ACID DYES (manufacturer is Singapore DyStar company) to collagen-modified superfine fiber synthetic leather base cloth dyeing 1h, obtain the superfine fiber synthetic leather base cloth of dyeing; Wherein, pH value adopts dilute sulfuric acid to regulate, and the consumption of ACID DYES is 2.5% of collagen-modified superfine fiber synthetic leather base cloth quality.
In the present embodiment, the dye-uptake of superfine fiber synthetic leather base cloth reaches 84.78%.
Embodiment 2
1) preparation of collagen:
In gelatin, add water, it is 40% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, adopting 1mol/L sodium hydroxide solution to regulate the pH value of gelatin solution is 9.5, then at 60 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 4h, obtains collagen; Wherein, the addition of alkali protease accounts for 1.5% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 6000%, temperature is, under the condition of 55 ℃, to adopt analytically pure formic acid to process 3.5h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of formic acid is 12% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 5000%, pH value is 6.0, temperature is under the condition of 40 ℃, to step 2) rotary drum in add tanning agent F ?90(manufacturer be Clariant chemical materials Co., Ltd) reaction 0.5h, then add collagen, by collagen graft modification to superfine fiber synthetic leather base cloth, reaction 5h, obtains collagen-modified superfine fiber synthetic leather base cloth; Wherein, pH value adopts dilute sulfuric acid to regulate, tanning agent F ?90 the consumption superfine fiber synthetic leather base cloth quality that is surface modification 15%, 15% of the superfine fiber synthetic leather base cloth quality that the consumption of collagen is surface modification;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 2000%, pH value is 5.0, temperature is under the condition of 55 ℃, in the rotary drum of step 3), add REACTIVE DYES (manufacturer is upper seamount Pu Chemical Co., Ltd.) to collagen-modified superfine fiber synthetic leather base cloth dyeing 3h, obtain the superfine fiber synthetic leather base cloth of dyeing; Wherein, pH value adopts dilute sulfuric acid to regulate, and the consumption of REACTIVE DYES is 3.0% of collagen-modified superfine fiber synthetic leather base cloth quality.
In the present embodiment, the dye-uptake of superfine fiber synthetic leather base cloth reaches 92.74%.
Embodiment 3
1) preparation of collagen:
In gelatin, add water, it is 30% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, adopting 1mol/L sodium hydroxide solution to regulate the pH value of gelatin solution is 9, then at 55 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 3h, obtains collagen; Wherein, the addition of alkali protease accounts for 2% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 4000%, temperature is, under the condition of 50 ℃, to adopt analytically pure formic acid to process 2.5h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of formic acid is 18% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 3000%, pH value is 8.0, temperature is under the condition of 35 ℃, to step 2) rotary drum in to add tanning agent TWT(manufacturer be Sichuan Ting Jiang new material limited company) reaction 4h, then add collagen, by collagen graft modification to superfine fiber synthetic leather base cloth, reaction 3h, obtains collagen-modified superfine fiber synthetic leather base cloth; Wherein, pH value adopts 1mol/L sodium hydroxide solution to regulate, 18% of the superfine fiber synthetic leather base cloth quality that the consumption of tanning agent TWT is surface modification, 20% of the superfine fiber synthetic leather base cloth quality that the consumption of collagen is surface modification;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 3000%, pH value is 5.5, temperature is, under the condition of 60 ℃, in the rotary drum of step 3), to add ACID DYES to collagen-modified superfine fiber synthetic leather base cloth dyeing 2h, obtains the superfine fiber synthetic leather base cloth of dyeing; Wherein, pH value adopts dilute sulfuric acid to regulate, and the consumption of ACID DYES is 1.5% of collagen-modified superfine fiber synthetic leather base cloth quality.
In the present embodiment, the dye-uptake of superfine fiber synthetic leather base cloth reaches 94.21%.
Embodiment 4
1) preparation of collagen:
In gelatin, add water, it is 25% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, adopting 1mol/L sodium hydroxide solution to regulate the pH value of gelatin solution is 8.0, then at 40 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 2h, obtains collagen; Wherein, the addition of alkali protease accounts for 0.8% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 3500%, temperature is, under the condition of 40 ℃, to adopt the concentrated sulfuric acid that mass fraction is 98% to process 2h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of the concentrated sulfuric acid accounts for 20% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 2500%, pH value is 9.0, temperature is under the condition of 20 ℃, to step 2) rotary drum in add collagen, by collagen graft modification, to superfine fiber synthetic leather base cloth, reaction 1h, obtains collagen-modified superfine fiber synthetic leather base cloth; Wherein, pH value adopts 1mol/L sodium hydroxide solution to carry out, 18% of the superfine fiber synthetic leather base cloth quality that the consumption of collagen is surface modification;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 3500%, pH value is 5.5, temperature is, under the condition of 53 ℃, in the rotary drum of step 3), to add REACTIVE DYES to collagen-modified superfine fiber synthetic leather base cloth dyeing 4h, obtains the superfine fiber synthetic leather base cloth of dyeing; Wherein, pH value adopts dilute sulfuric acid to regulate, and the consumption of REACTIVE DYES is 8% of collagen-modified superfine fiber synthetic leather base cloth quality.
In the present embodiment, the dye-uptake of superfine fiber synthetic leather base cloth reaches 89.21%.
Embodiment 5
1) preparation of collagen:
In gelatin, add water, it is 35% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, adopting 1mol/L sodium hydroxide solution to regulate the pH value of gelatin solution is 10.0, then at 45 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 4.5h, obtains collagen; Wherein, the addition of alkali protease accounts for 1.2% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 5000%, temperature is, under the condition of 55 ℃, to adopt the concentrated sulfuric acid that mass fraction is 98% to process 3.5h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of the concentrated sulfuric acid accounts for 13% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 4500%, pH value is 5.0, temperature is under the condition of 60 ℃, to step 2) rotary drum in add tanning agent F ?90 reaction 3h, then add collagen, by collagen graft modification to superfine fiber synthetic leather base cloth, reaction 2h, obtains collagen-modified superfine fiber synthetic leather base cloth; Wherein, pH value adopts dilute sulfuric acid to regulate, tanning agent F ?90 the consumption superfine fiber synthetic leather base cloth quality that is surface modification 9%, 8% of the superfine fiber synthetic leather base cloth quality that the consumption of collagen is surface modification;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 4500%, pH value is 4.5, temperature is, under the condition of 58 ℃, in the rotary drum of step 3), to add ACID DYES to collagen-modified superfine fiber synthetic leather base cloth dyeing 2.5h, obtains the superfine fiber synthetic leather base cloth of dyeing; Wherein, pH value adopts dilute sulfuric acid to regulate, and the consumption of ACID DYES is 1% of collagen-modified superfine fiber synthetic leather base cloth quality.
In the present embodiment, the dye-uptake of superfine fiber synthetic leather base cloth reaches 94.06%.
Embodiment 6
1) preparation of collagen:
In gelatin, add water, it is 40% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, adopting 1mol/L sodium hydroxide solution to regulate the pH value of gelatin solution is 8.0, then at 60 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 6h, obtains collagen; Wherein, the addition of alkali protease accounts for 1.8% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 4500%, temperature is, under the condition of 35 ℃, to adopt analytically pure formic acid to process 5h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of the concentrated sulfuric acid accounts for 10% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 3500%, pH value is 2.0, temperature is under the condition of 50 ℃, to step 2) rotary drum in add tanning agent TWT reaction 2h, then add collagen, by collagen graft modification to superfine fiber synthetic leather base cloth, reaction 1.5h, obtains collagen-modified superfine fiber synthetic leather base cloth; Wherein, pH value adopts dilute sulfuric acid to regulate, 1% of the superfine fiber synthetic leather base cloth quality that the consumption of tanning agent TWT is surface modification, 4% of the superfine fiber synthetic leather base cloth quality that the consumption of collagen is surface modification;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 2500%, pH value is 5.0, temperature is, under the condition of 50 ℃, in the rotary drum of step 3), to add REACTIVE DYES to collagen-modified superfine fiber synthetic leather base cloth dyeing 3.5h, obtains the superfine fiber synthetic leather base cloth of dyeing; Wherein, pH value adopts dilute sulfuric acid to regulate, and the consumption of REACTIVE DYES is 6% of collagen-modified superfine fiber synthetic leather base cloth quality.
In the present embodiment, the dye-uptake of superfine fiber synthetic leather base cloth reaches 91.87%.
In the present invention, the equal relative molecular mass of the number of collagen is 800-1200, and average weight-molecular mass is 1200-1600.Embodiment 1 ?in 6 gelatin used from discarded leather bits, extract, method is simple and with low cost.
The present invention, by superfine fiber synthetic leather base cloth is carried out to preliminary treatment, can expose the part active group on base cloth surface; By the collagen that adopts hydrolysis by novo gelatin to make, to superfine fiber synthetic leather base cloth, carry out covalent modified, increased the active group on base cloth, increased the binding site of dyestuff, make its dye-uptake up to 94.21% left and right, effectively improve the dyeability of superfine fiber chemical leather, be conducive to superfine fiber chemical leather industrial expansion.
It is cited that content of the present invention is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading description of the present invention, is claim of the present invention and contains.
Claims (9)
1. a method of improving superfine fiber synthetic leather base cloth dyeability, is characterized in that: comprise the following steps:
1) preparation of collagen:
In gelatin, add water, it is 20%～40% gelatin solution that stirring makes to obtain after gelatin swelling mass concentration, regulating the pH value of gelatin solution is 8.0～10.0, then at 40～60 ℃, in gelatin solution, adds alkali protease to stir hydrolysis 2～6h, obtains collagen; Wherein, the addition of alkali protease accounts for 0.8%～2.0% of gelatin quality;
2) preliminary treatment of superfine fiber synthetic leather base cloth:
In rotary drum, add superfine fiber synthetic leather base cloth, in liquor ratio, be 3000%～6000%, temperature is, under the condition of 35～55 ℃, to adopt acid to process 2～5h to superfine fiber synthetic leather base cloth, obtains the superfine fiber synthetic leather base cloth of surface modification; Wherein, the consumption of acid is 10%～20% of superfine fiber synthetic leather base cloth quality;
3) modification of collagen to superfine fiber synthetic leather base cloth:
In liquor ratio, be 2000%～5000%, pH value is 2.0～9.0, temperature is under the condition of 20～60 ℃, to step 2) rotary drum in add collagen, by collagen graft modification to the superfine fiber synthetic leather base cloth of surface modification, reaction 0.5～4h, obtains collagen-modified superfine fiber synthetic leather base cloth; The consumption of collagen be surface modification superfine fiber synthetic leather base cloth quality 4%～20%;
4) dyeing of collagen-modified superfine fiber synthetic leather base cloth:
In liquor ratio, be 2000%～5000%, pH value is 4.5～5.5, temperature is, under the condition of 50～60 ℃, in the rotary drum of step 3), to add dyestuff to collagen-modified superfine fiber synthetic leather base cloth dyeing 1～4h, obtains the superfine fiber synthetic leather base cloth of dyeing; Wherein the consumption of dyestuff is 1%～8% of collagen-modified superfine fiber synthetic leather base cloth quality.
2. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 1, is characterized in that: in described step 1), gelatin extracts from discarded leather bits.
3. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 1, is characterized in that: the pH value in described step 1) adopts sodium hydroxide solution to regulate.
4. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 1, is characterized in that: the acid described step 2) is the concentrated sulfuric acid or the analytically pure formic acid of mass fraction 98%.
5. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 1, is characterized in that: the pH value in described step 3) adopts sodium hydroxide solution or dilute sulfuric acid to regulate.
6. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 1, it is characterized in that: in described step 3), before adding collagen in rotary drum, add crosslinking agent and react 0.5-4h, the superfine fiber synthetic leather base cloth quality 1%-18% that the addition of crosslinking agent is surface modification.
7. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 6, is characterized in that: described crosslinking agent be tanning agent F ?90 or tanning agent TWT.
8. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 1, is characterized in that: the pH value in described step 4) adopts dilute sulfuric acid to regulate.
9. a kind of method of improving superfine fiber synthetic leather base cloth dyeability according to claim 1, is characterized in that: the dyestuff in described step 4) is ACID DYES or REACTIVE DYES.
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| CN107687099A (en) * | 2017-08-16 | 2018-02-13 | 上海华峰超纤材料股份有限公司 | Island ultrafine fiber suede reactive dye for wool colouring method |
| CN108570853A (en) * | 2018-05-02 | 2018-09-25 | 陕西科技大学 | A kind of bio-mimetic syntheses leather and its production method |
| CN108625174A (en) * | 2018-05-02 | 2018-10-09 | 陕西科技大学 | A kind of production method of bionical superfine fiber chemical leather |
| CN108611875A (en) * | 2018-05-06 | 2018-10-02 | 汪涛 | It is intended to improve the superfine fiber chemical leather dyeing of dye-uptake and color fastness |
| CN110219180A (en) * | 2019-06-27 | 2019-09-10 | 浙江永祥合成材料有限公司 | A kind of base fabric processing technology of superfine fiber chemical leather |
| CN110219180B (en) * | 2019-06-27 | 2021-09-10 | 浙江永祥合成材料有限公司 | Processing technology of base cloth of superfine fiber synthetic leather |
| CN116590920A (en) * | 2023-04-10 | 2023-08-15 | 江苏科美新材料有限公司 | Manufacturing method of aqueous superfine fiber synthetic leather easy to dye |
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