CN103882722A - Grey cashmere discoloring method - Google Patents
Grey cashmere discoloring method Download PDFInfo
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- CN103882722A CN103882722A CN201410084892.8A CN201410084892A CN103882722A CN 103882722 A CN103882722 A CN 103882722A CN 201410084892 A CN201410084892 A CN 201410084892A CN 103882722 A CN103882722 A CN 103882722A
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Abstract
The invention discloses a grey cashmere discoloring method which comprises the following steps: (1) performing enzyme wash; (2) performing pretreatment; (3) performing oxygen bleaching; and (4) performing reducing bleaching. By adoption of the discoloring method, the grey cashmere is high in whiteness, small in weightlessness, low in strength loss, good in handfeel and easy to spin, short in discoloring time, and low in cost, wherein water and power can be saved.
Description
Technical field
The present invention relates to lint decolouring technology field, especially a kind of discoloration method of blue or green suede.
Background technology
Blue or green suede is the cashmere that a kind of whiteness is only second to white woolenless cloth, blue or green suede itself is cashmere fiber, its length, fineness are the same with white suede, just due to the ecru with natural, can not be used for more bright-coloured shallow, look dyeing (more gloomy after dyeing), few more than 10 ten thousand left and right per ton of the white suede of cost ratio, therefore, many producers are used working as white suede after blue or green suede decolouring, save to reach the object that white suede consumption reduces costs.
At present on the market, the cold decolouring technology of the blue or green suede of many uses, its shortcoming is that bleaching time is long, and nearly 48 hours, production efficiency was low, and after decolouring, the damage of cashmere scale greatly, is wasted time and energy.Adopt in addition heat decoloring technology, average bleaching time was at 7～9 hours, and the problem that many employing heat decoloring technology exist is: ferrous salt consumption is large, and washing time is many, some washing time nearly 5～7 times, water wasting, time-consuming, rinse sordid ferrous ion over oxidation cashmere fiber in the time that oxygen floats, not only waste hydrogen peroxide, and cause cashmere damage large, weightless high, whiteness is low, efficiency is low.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of discoloration method of blue or green suede, the cycle is short, and efficiency is high, and cost is low, whiteness is good, weightlessness less, strength loss is little, good hand touch, is easy to spinning.
In order to realize foregoing invention object, the invention provides following technical scheme: a kind of discoloration method of blue or green suede, comprises the following steps: wherein following concentration is all relatively blue or green suede weight,
1., enzyme washes: under normal temperature, blue or green suede is put into flock dyeing cylinder and add soft water, bath raio is 1:10～15, stirs, and adds successively 1～3% nonionic lotion and 0.1%～0.2% mercerising protease immersion treatment, and regulating pH value is 8～9; Be warming up to 40 ℃～55 ℃, be incubated 15～25 minutes, emptying, washing;
2., preliminary treatment: the blue or green suede after 1. step is washed adds soft water, stirs, and adjust pH is 4～5, adds successively 1～5% sodium hydrosulfite, adds 0.5～1% complexing agent, 1～2.5%FeSO
4; Be warming up to 55～57 ℃, be incubated 40～60 minutes, emptying, wash 1～2 time;
3., oxygen floats: the blue or green suede after 2. step washes adds soft water, stirs, and adds successively 10～20% hydrogen peroxide bleaching stabilizers, 3～6% cashmere protective agents and the washing of 24～36% hydrogen peroxide dippings, and adjust pH is 8～9; Be warming up to 55～57 ℃, be incubated 40～60 minutes, emptying, wash 1～2 time;
4., reduction is floated: the blue or green suede after 3. step washes adds soft water again, stirs, and adds successively 1～3% formic acid, 1～3% sodium hydrosulfite, 0.2～0.5% complexing agent processing, is warming up to 40～50 ℃, is incubated 20～25 minutes; Wash 1～2 time.
Further, temperature-rise period is 1～3 ℃ of intensification per minute.
Further, described complexing agent is one or more in organic phospho acid or its salt and tetrasodium ethylenediamine tetraacetate.
Further, described organic phospho acid and salt thereof are 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid or its sodium salt, ATMP or its sodium salt, ethylene diamine tetra methylene phosphonic acid sodium, diethylene triamine pentamethylene phosphonic or its sodium salt, 2-phosphonic acids butane-1,2,4-tricarboxylic acids, four sodium, hexamethylene diamine four methylenephosphonic acid sylvite, two 1, one or more in 6-hexylidene triamine five methylenephosphonic acid sodium.
Further, described complexing agent is made up of than component following weight:
Organic phospho acid sodium 2 tetrasodium ethylenediamine tetraacetates 2
Polycarboxylic acids sodium 0.5 secondary alcohol 9 0.5
Water 5.
Further, the compound method of described compound complex agent is: first respectively organic phospho acid sodium, tetrasodium ethylenediamine tetraacetate, polycarboxylic acids sodium, secondary alcohol 9 are melted with a small amount of hot water, then add the aquation of surplus to open.
Compared with prior art, the present invention has the following advantages: adopt blue or green suede whiteness, feel etc. after discoloration method of the present invention to be all better than former technique, and bleaching time is short, water-saving, power saving, cost are low, institute's used additives that makes is not containing APEO, Environmental Safety, does not use fluorescent whitening agent, meets the requirement of national cleaner production.
The specific embodiment
Describe the present invention below in conjunction with embodiment, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
A discoloration method for blue or green suede, comprises the following steps: wherein following concentration is all relatively blue or green suede weight,
1., enzyme washes: under normal temperature, blue or green suede is put into flock dyeing cylinder and add soft water, bath raio is 1:10～15, stirs, and adds successively 1～3% nonionic lotion and 0.1%～0.2% mercerising protease immersion treatment, and regulating pH value is 8～9; Be warming up to 40 ℃～55 ℃, be incubated 15～25 minutes, emptying, washing;
2., preliminary treatment: the blue or green suede after 1. step is washed adds soft water, stirs, and adjust pH is 4～5, adds successively 1～5% sodium hydrosulfite, adds 0.5～1% complexing agent, 1～2.5%FeSO
4; Be warming up to 55～57 ℃, be incubated 40～60 minutes, emptying, wash 1～2 time;
3., oxygen floats: the blue or green suede after 2. step washes adds soft water, stirs, and adds successively 10～20% hydrogen peroxide bleaching stabilizers, 3～6% cashmere protective agents and the washing of 24～36% hydrogen peroxide dippings, and adjust pH is 8～9; Be warming up to 55～57 ℃, be incubated 40～60 minutes, emptying, wash 1～2 time;
4., reduction is floated: the blue or green suede after 3. step washes adds soft water again, stirs, and adds successively 1～3% formic acid, 1～3% sodium hydrosulfite, 0.2～0.5% complexing agent processing, is warming up to 40～50 ℃, is incubated 20～25 minutes; Wash 1～2 time;
Wherein, described complexing agent is one or more in organic phospho acid or its salt and tetrasodium ethylenediamine tetraacetate; Described organic phospho acid and salt thereof are 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid or its sodium salt, ATMP or its sodium salt, ethylene diamine tetra methylene phosphonic acid sodium, diethylene triamine pentamethylene phosphonic or its sodium salt, 2-phosphonic acids butane-1,2,4-tricarboxylic acids four sodium, hexamethylene diamine four methylenephosphonic acid sylvite, two 1, one or more in 6-hexylidene triamine five methylenephosphonic acid sodium.
Concrete, described complexing agent is grouped into by the following one-tenth of weight portion:
Organic phospho acid sodium 2 tetrasodium ethylenediamine tetraacetates 2
Polycarboxylic acids sodium 0.5 secondary alcohol 9 0.5
Water 5.
Its compound method is: first respectively organic phospho acid sodium, tetrasodium ethylenediamine tetraacetate, polycarboxylic acids sodium, secondary alcohol 9 are melted with a small amount of hot water, then add the aquation of surplus to open.
Above-mentioned blue or green suede discoloration method, the action principle of each auxiliary agent is as follows:
A, enzyme are washed in step:
1. the object of washing middle nonionic lotion at enzyme is to remove the grease on blue or green suede surface, and dirt, gives full play to mercerising protease and play a role.
2. wash middle adjusting pH value 8-9 at enzyme, give full play to mercerising protease and play a role.
3. in enzyme is washed, adding mercerising protease is secondary protein and the protein hydrolysate in order to remove cashmere fiber surface, effectively gets through second step preliminary treatment ferrous ion and enter the passage of cashmere fiber inside.
In B, pre-treatment step:
1. the take a policy object of powder of preliminary treatment is the reducing environment that maintains treatment fluid, prevents that ferrous ion is oxidized to insoluble ferric ion.
2. regulate alkali residual in PH=4-5 and when enzyme washes, as adopted acetic acid to regulate.
3. add the object of complexing agent
(1) efficient complexing ferrous ion, and ferrous ion forms coordinate bond combination, has shielded ferrous ion positive charge around, has reduced the damage of positive charge ferrous ion to fiber, has saved fiber protective agent.
(2) added complexing agent to make treatment fluid stable: to present elecrtonegativity because complexing agent makes the surrounding of ferrous ion, water-soluble, the stability of ferrous ion are increased, in experiment, find to have added the treatment fluid of complexing agent very limpid, and the treatment fluid surface that does not add complexing agent is due to air oxidation jaundice, muddiness;
(3) make ferrous ion change charged character (negative electrical charge) after adding complexing agent, make ferrous ion be more prone to enter fiber and pigment combination.Cashmere surface band positive charge when adding acetic acid in second step, be electronegative complexing ferrous ion because a coulomb gravitation electrical attraction (having got through passage owing to adding enzyme in the first step) be more prone to enter fiber with pigment in conjunction with (pigment in blue or green suede is better than complexing agent and ferrous ion binding ability with the ability of ferrous ion combination);
(4) due to complexing agent and first step enzyme processing acting in conjunction, the effective rate of utilization of ferrous salt is increased, has reduced ferrous salt consumption, reduced cost, also reduced the washing time after second step,
(5) use complexing agent to make not and excessive ferrous ion and the complexing agent generation complexing of pigment complexing, the ferrous ion good water solubility of complexing, be easy to rinse, reduced washing time, avoided oxygen float in the damage of unnecessary iron ion catalysis to fiber.More than original at least flushing 5 cylinder water, reduce to and only need to rinse 1-2 cylinder water;
C, oxygen float in step:
1. adding stabilizing agent is in order to maintain a stable pH environment, the excessive catalysis of iron ion while avoiding oxygen to float.
2. adding the protectant object of fiber is that anti-block damages cashmere fiber while floating.
3. adding hydrogen peroxide is in order to bleach, due to second step ferrous ion and pigment complexing more abundant after improving, therefore new technology hydrogen peroxide consumption is by original relative fabric weight 60%, be reduced to relative fabric weight 30% left and right, save the hydrogen peroxide of half, reduced cost, bleaching time shortened to 60 minutes by original 90 minutes, had also reduced the damage to fiber.
In D, reduction step:
1. the object that adds formic acid be in and the residual alkali that floats of oxygen, the condition of reduction is controlled under sour environment and carried out, and formic acid has certain reducibility, be conducive to ferric ion and be reduced into ferrous ion.
2. the object of powder of taking a policy is the reducing environment that maintains treatment fluid, the hydrogen peroxide that reduction is not rinsed well.Oxygen is floated to the ferrous ion that the insoluble ferric ion that causes is reduced into.
3. the object that adds complexing agent is that ferrous ion complexing is disperseed, more fully (conventional method is used oxalic acid to remove iron ion to make to remove iron ion, because the corrosivity of oxalic acid is strong, cashmere feel after treatment is very poor), even and if have the iron ion of minute quantity residual, because iron ion can not had influence on the coloured light (metal ion is gloomy after can causing dyeing) dyeing in rear road by complexing, after having dyeed, unnecessary chelated iron ion is rinsed removal.Therefore, the method has been protected the feel of fiber, and brute force has increased the whiteness of final fiber.
Above-mentioned blue or green suede discoloration method, has following characteristics:
1, in front washing, add mercerising protease to remove secondary protein and the protein hydrolysate on cashmere fiber surface, effectively get through second step preliminary treatment ferrous ion and enter the passage of cashmere fiber inside.
2, add a kind of compound complex agent when preliminary treatment, be not only pretreatment fluid stable, and ferrous salt consumption is reduced, reduced the washing time after second step.
3, when oxygen floats, hydrogen peroxide consumption reduces a lot, and bleaching time shortens, and has reduced cost.Due to second step ferrous ion and pigment complexing more abundant after improving, therefore new technology hydrogen peroxide consumption is by original relative fabric weight 60%, be reduced to relative fabric weight 30% left and right, the many hydrogen peroxide of half are saved, reduce cost, bleaching time shortened to 60 minutes by original 90 minutes, had also reduced the damage to fiber.
4, in reducing bleach, use the reductic acid-formic acid of little molecular weight to replace composite decoloration acid to reduce cost, used a small amount of efficient complexing agent simultaneously, made to remove iron rust more abundant, protected fiber strength, increased the whiteness of final fiber.
Compare conventional blue or green suede decoloration process, the present invention has the following advantages:
One, introduce biological enzyme technology, in front washing, add mercerising protease.
Biology enzyme is the emphasis of textile science research always, the distinguishing features such as that biological enzyme formulation has is single-minded, efficient, environmental protection.(this mercerising protease is for wool mercerising soft treatment for the mercerising protease using in technique of the present invention, by in the washing pre-treatment of its extension) consumption is considerably less, but effectively get through second step preliminary treatment ferrous ion and entered the passage of cashmere fiber inside, for second step is effectively processed and laid a good foundation.
Two, selected efficient complexing agent when preliminary treatment.
Efficiently complexing ferrous ion of this efficient complexing agent, and the combination of ferrous ion formation coordinate bond, shielded ferrous ion positive charge around.The benefit that uses this efficient complexing agent to bring has:
The fiber protective agent using in A, the former technique saved.Due to the positive charge conductively-closed of ferrous ion, reduce the damage of positive charge ferrous ion to fiber.Therefore, in this step, save fiber protective agent, during its postpose oxygen is floated, use the best steel to make the knife's edge, reduced fibre damage;
B, add the treatment fluid of efficient complexing agent stable.Because efficient complexing agent makes the surrounding of ferrous ion present elecrtonegativity, water-soluble, the stability of ferrous ion are increased, in experiment, find to have added the treatment fluid of efficient complexing agent very limpid, and the treatment fluid surface that does not add efficient complexing agent is due to air oxidation jaundice, muddiness;
C, make ferrous ion be more prone to enter fiber and pigment combination after adding complexing agent.Cashmere surface band positive charge when adding acetic acid in second step, is electronegative ferrous ion because a coulomb gravitation electrical attraction (and adding enzyme to get through passage in the first step) is more prone to enter fiber with pigment complexing;
D, process acting in conjunction due to efficient complexing agent and first step enzyme, make the consumption of ferrous salt reduce 3/4, and the pretreated time of second step greatly shorten, be reduced to about 40 minutes by original 120 minutes.Because the consumption of ferrous salt reduces, reduce the washing time after second step simultaneously, more than original at least flushing 5 cylinder water, reduced to and only need to rinse 2 cylinder water;
Three, when oxygen floats, hydrogen peroxide consumption reduces a lot, and bleaching time shortens, and has reduced cost.
Due to second step ferrous ion and pigment complexing more abundant after improving, therefore technique hydrogen peroxide consumption of the present invention is by original relative fabric weight 60%, be reduced to relative fabric weight 30%, the many hydrogen peroxide of half are saved, reduce cost, bleaching time shortened to 60 minutes by original 90 minutes, had also reduced the damage to fiber.
Four, in reducing bleach, use the reductic acid (formic acid) of little molecular weight to replace composite decoloration acid to reduce cost, used a small amount of efficient complexing agent simultaneously, made to remove iron rust more abundant, protected fiber strength, increased the whiteness of final fiber.
embodiment 1
A discoloration method for blue or green suede, comprises the following steps:
1., enzyme is washed: under normal temperature, blue or green suede is put into flock dyeing cylinder and add soft water; bath raio is 1:10～15; stir; add successively 2%(owf) nonionic lotion (FK-9508D1; in spin chemical industry) and 0.1%(owf) mercerising protease (cta-b; in spin chemical industry) immersion treatment, regulating pH value is 8; 2 ℃ of intensifications per minute are warming up to 55 ℃, maintain 15 minutes, emptying mixing lotion; Wash 1 time;
2., preliminary treatment: the blue or green suede after 1. step is washed adds soft water, stir, adjust pH is 5, adds successively 5%(owf) sodium hydrosulfite, add 1%(owf) complexing agent, 2.5%(owf) FeSO
4; 3 ℃ of intensifications per minute are warming up to 55 ℃, are incubated 60 minutes, emptying, wash 1 time;
3., oxygen floats: the blue or green suede after 2. step washes adds soft water, stir, add successively 20%(owf) hydrogen peroxide bleaching stabilizer (montelai, Meng Telai company), 3%(owf) cashmere protective agent (montelai 2706, Meng Telai company) and 36%(owf) hydrogen peroxide dipping washing, adjust pH is 8; 1 ℃ of intensification per minute is warming up to 57 ℃, is incubated 40 minutes, emptying, washes 2 times;
4., the blue or green suede of step after 3. washing adds soft water again, stirs, and adds successively 1%(owf) formic acid, 3%(owf) sodium hydrosulfite, 0.2%(owf) complexing agent processing, 2 ℃ of intensifications per minute are warming up to 55 ℃, are incubated 20 minutes; Wash 2 times;
Wherein, described complexing agent is grouped into by the following one-tenth of weight portion:
Organic phospho acid sodium 2 tetrasodium ethylenediamine tetraacetates 2
Polycarboxylic acids sodium 0.5 secondary alcohol 9 0.5
Water 5.
Its compound method is: first respectively organic phospho acid sodium, tetrasodium ethylenediamine tetraacetate, polycarboxylic acids sodium, secondary alcohol 9 are melted with a small amount of hot water, then add the aquation of surplus to open.
Described organic phospho acid sodium is 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid disodium, also can adopt ATMP sodium, ethylene diamine tetra methylene phosphonic acid sodium, diethylene triamine pentamethylene phosphonic sodium, 2-phosphonic acids butane-1,2,4-tricarboxylic acids four sodium, hexamethylene diamine four methylenephosphonic acid potassium, two 1, one or more in 6-hexylidene triamine five methylenephosphonic acid sodium.
embodiment 2
A discoloration method for blue or green suede, comprises the following steps:
1., enzyme washes: under normal temperature, blue or green suede is put into flock dyeing cylinder and add soft water, bath raio is 1:10～15, stirs, and adds successively 1%(owf) nonionic lotion and 0.2%(owf) mercerising protease immersion treatment, regulating pH value is 9; 2 ℃ of intensifications per minute are warming up to 40 ℃, are incubated 25 minutes, emptying, washing;
2., preliminary treatment: the blue or green suede after 1. step is washed adds soft water, stir, adjust pH is 4, adds successively 4.5%(owf) sodium hydrosulfite, add 0.5%(owf) complexing agent, 2%(owf) FeSO
4; 1 ℃ of intensification per minute is warming up to 57 ℃, is incubated 40 minutes, emptying, washes 2 times;
3., oxygen floats: the blue or green suede after 2. step washes adds soft water, stirs, and adds successively 10%(owf) hydrogen peroxide bleaching stabilizer, 6%(owf) cashmere protective agent and 24%(owf) hydrogen peroxide dipping washing, adjust pH is 9; 1 ℃ of intensification per minute is warming up to 55 ℃, is incubated 60 minutes, emptying, washes 1 time;
4., reduction floats: the blue or green suede after 3. step washes adds soft water again, stirs, and adds successively 3%(owf) formic acid, 1%(owf) sodium hydrosulfite, 0.5%(owf) complexing agent processing, 3 ℃ of intensifications per minute are warming up to 45 ℃, are incubated 25 minutes; Wash 1 time; Wherein, described complexing agent is 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid disodium.
embodiment 3
A discoloration method for blue or green suede, comprises the following steps: wherein following concentration is relatively blue or green suede weight,
1., enzyme washes: under normal temperature, blue or green suede is put into flock dyeing cylinder and add soft water, bath raio is 1:10～15, stirs, and adds successively 3%(owf) nonionic lotion and 0.1%(owf) mercerising protease immersion treatment, regulating pH value is 9; Be warming up to 45 ℃, be incubated 20 minutes, emptying, washing;
2., preliminary treatment: the blue or green suede after 1. step is washed adds soft water, stir, adjust pH is 5, adds successively 3%(owf) sodium hydrosulfite, add 0.7%(owf) complexing agent, 1.5%(owf) FeSO
4; Be warming up to 56 ℃, be incubated 50 minutes, emptying, wash 2 times;
3., oxygen floats: the blue or green suede after 2. step washes adds soft water, stirs, and adds successively 15%(owf) hydrogen peroxide bleaching stabilizer, 5%(owf) cashmere protective agent and 30%(owf) hydrogen peroxide dipping washing, adjust pH is 8; Be warming up to 55 ℃, be incubated 45 minutes, emptying, wash 1 time;
4., reduction floats: the blue or green suede after 3. step washes adds soft water again, stirs, and adds successively 2%(owf) formic acid, 1.5%(owf) sodium hydrosulfite, 0.3%(owf) complexing agent processing, be warming up to 40 ℃, be incubated 22 minutes; Wash 2 times.Wherein, described complexing agent is tetrasodium ethylenediamine tetraacetate.
test example 1
The cost comparative analysis of the new old technology of blue or green suede decolouring: (the cost lists of de-1000 kilograms of blue or green suedes)
1, the auxiliary agent cost accounting of conventional blue or green suede heat decoloring technique:
2, the auxiliary agent cost accounting of technique of the present invention:
3, the accounting of conventional blue or green suede heat decoloring technique water power vapour cost:
4, the accounting of technique water power vapour cost of the present invention:
test example 2
Loss after blue or green suede decolouring
1, the data of conventional blue or green suede heat decoloring technique
2, process data of the present invention
3. the index such as whiteness, brute force of blue or green suede decolouring.
test example 3
The blue or green suede of decolouring that uses technique of the present invention in large production, has carried out the trial production of 2 colors:
Find out from experimental data above: the whiteness the blue or green suede decoloration process decolouring of the present invention is whiter than common process, the basic not damaged of scale, the rear loss of decolouring is little, good hand touch, and cost is lower than common process.Adopt hair active, weak acid dye to dye middle light color and observe Color, dye all right.2941 yuan of de-1000 kilograms of blue or green suede auxiliary agent cost savings, water power is saved 986 yuan; Due to the reduction of loss, drop to 0.6% by former average 2.46%, reduce by 1.86%, calculate according to de-1000 kilograms of blue or green suedes, the blue or green suede of saving is worth: 1000*0.0186*730=13578 unit (blue or green suede is according to 730 yuan of/kilogram of calculating); Technique of the present invention is saved 17505 yuan of costs (de-1000 kilograms of blue or green suedes) altogether than common process.
Price difference according to current blue or green suede and white suede calculates per ton 100,000, the fund that replaces white suede to save according to the de-1 ton of blue or green suede of technique of the present invention: 100000-{6289(auxiliary agent cost)+1906(water power cost)+730000*0. 6%(loss)+2.5*1000(is artificial)=84925 yuan. according to above accounting, the cylinder of 100 kilograms needs only successfully a de-cylinder every day and can be company and earn the profit of nearly 8000 yuan, 1 year de-10 tons calculate 850,000 yuan of the funds of saving nearly; Within 1 year, use 30 tons of blue or green suedes of decolouring to replace white suede to reach 2,500,000 yuan for company brings indirectly economic benefit.As can be seen here, the very worth large production application of the blue or green suede decoloration process of the present invention.
Claims (6)
1. a discoloration method for blue or green suede, comprises the following steps: wherein following concentration is all relatively blue or green suede weight,
1., enzyme washes: under normal temperature, blue or green suede is put into flock dyeing cylinder and add soft water, bath raio is 1:10～15, stirs, and adds successively 1～3% nonionic lotion and 0.1%～0.2% mercerising protease immersion treatment, and regulating pH value is 8～9; Be warming up to 40 ℃～55 ℃, be incubated 15～25 minutes, emptying, washing;
2., preliminary treatment: the blue or green suede after 1. step is washed adds soft water, stirs, and adjust pH is 4～5, adds successively 1～5% sodium hydrosulfite, adds 0.5～1% complexing agent, 1～2.5%FeSO
4; Be warming up to 55～57 ℃, be incubated 40～60 minutes, emptying, wash 1～2 time;
3., oxygen floats: the blue or green suede after 2. step washes adds soft water, stirs, and adds successively 10～20% hydrogen peroxide bleaching stabilizers, 3～6% cashmere protective agents and the washing of 24～36% hydrogen peroxide dippings, and adjust pH is 8～9; Be warming up to 55～57 ℃, be incubated 40～60 minutes, emptying, wash 1～2 time;
4., reduction is floated: the blue or green suede after 3. step washes adds soft water again, stirs, and adds successively 1～3% formic acid, 1～3% sodium hydrosulfite, 0.2～0.5% complexing agent processing, is warming up to 40～50 ℃, is incubated 20～25 minutes; Wash 1～2 time.
2. the discoloration method of blue or green suede as claimed in claim 1, is characterized in that: temperature-rise period is 1～3 ℃ of intensification per minute.
3. the discoloration method of blue or green suede as claimed in claim 1 or 2, is characterized in that: described complexing agent is one or more in organic phospho acid or its salt and tetrasodium ethylenediamine tetraacetate.
4. the discoloration method of blue or green suede as claimed in claim 3, it is characterized in that: described organic phospho acid and sodium salt thereof are 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid or its sodium salt, ATMP or its sodium salt, ethylene diamine tetra methylene phosphonic acid sodium, diethylene triamine pentamethylene phosphonic or its sodium salt, 2-phosphonic acids butane-1,2,4-tricarboxylic acids, four sodium, hexamethylene diamine four methylenephosphonic acid sylvite, two 1, one or more in 6-hexylidene triamine five methylenephosphonic acid sodium.
5. the discoloration method of blue or green suede as claimed in claim 3, is characterized in that: described complexing agent is made up of than component following weight:
Organic phospho acid sodium 2 tetrasodium ethylenediamine tetraacetates 2
Polycarboxylic acids sodium 0.5 secondary alcohol 9 0.5
Water 5.
6. the discoloration method of blue or green suede as claimed in claim 5, it is characterized in that: the compound method of described compound complex agent is: first respectively organic phospho acid sodium, tetrasodium ethylenediamine tetraacetate, polycarboxylic acids sodium, secondary alcohol 9 are melted with a small amount of hot water, then add the aquation of surplus to open.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105040397A (en) * | 2015-04-02 | 2015-11-11 | 宁夏中银绒业股份有限公司 | Improved grey cashmere decoloring method |
| CN105040400A (en) * | 2015-04-02 | 2015-11-11 | 宁夏中银绒业股份有限公司 | Improved cashmere oxidation-reduction bleaching method |
| CN105177990A (en) * | 2015-08-11 | 2015-12-23 | 宁夏荣昌绒业集团有限公司 | Purple ashmere decolorization method |
| CN105177984A (en) * | 2015-04-02 | 2015-12-23 | 宁夏中银绒业股份有限公司 | Improved purple cashmere decoloring technology |
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| CN109082877A (en) * | 2018-08-27 | 2018-12-25 | 江苏阳光股份有限公司 | A kind of bleaching process of purple cashmere |
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| CN105177983A (en) * | 2014-06-30 | 2015-12-23 | 耿云花 | Cashmere blanching method |
| CN105040397A (en) * | 2015-04-02 | 2015-11-11 | 宁夏中银绒业股份有限公司 | Improved grey cashmere decoloring method |
| CN105040400A (en) * | 2015-04-02 | 2015-11-11 | 宁夏中银绒业股份有限公司 | Improved cashmere oxidation-reduction bleaching method |
| CN105177984A (en) * | 2015-04-02 | 2015-12-23 | 宁夏中银绒业股份有限公司 | Improved purple cashmere decoloring technology |
| CN105274827A (en) * | 2015-04-02 | 2016-01-27 | 宁夏中银绒业股份有限公司 | Improved oxygen bleaching decoloring technology |
| CN105177990A (en) * | 2015-08-11 | 2015-12-23 | 宁夏荣昌绒业集团有限公司 | Purple ashmere decolorization method |
| CN105177990B (en) * | 2015-08-11 | 2017-03-22 | 宁夏荣昌绒业集团有限公司 | Purple ashmere decolorization method |
| CN105603749A (en) * | 2015-12-22 | 2016-05-25 | 上海婉静纺织科技有限公司 | Wedding dress fabric |
| CN106758127A (en) * | 2016-11-17 | 2017-05-31 | 无锡奔牛生物科技有限公司 | One discoloration method for growing cotton |
| CN108425235A (en) * | 2018-04-13 | 2018-08-21 | 浙江玛戈利亚羊绒世家有限公司 | A kind of low temperature cashmere method for bleaching |
| CN109082877A (en) * | 2018-08-27 | 2018-12-25 | 江苏阳光股份有限公司 | A kind of bleaching process of purple cashmere |
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