CN101831793B - Desizing agent for production process in pretreatment of printing and dyeing and preparation method thereof - Google Patents
Desizing agent for production process in pretreatment of printing and dyeing and preparation method thereof Download PDFInfo
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- CN101831793B CN101831793B CN2010101502878A CN201010150287A CN101831793B CN 101831793 B CN101831793 B CN 101831793B CN 2010101502878 A CN2010101502878 A CN 2010101502878A CN 201010150287 A CN201010150287 A CN 201010150287A CN 101831793 B CN101831793 B CN 101831793B
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- desizing agent
- alkali metal
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Abstract
The invention relates to a desizing agent for a production process in pretreatment of printing and dyeing and a preparation method thereof. The desizing agent comprises the following components by weight percent: 25% to 35% of alkali metal hydroxide, 5% to 10% of alkali metal phosphate, 5% to 10% of alkali metal silicate, 2% to 6% of alkaline-resistant penetrant and the balance of water. The preparation method of the desizing agent comprises the steps of: (1) adding the alkali metal phosphate and the alkali metal silicate to the water according to a formula; stirring at the temperature of 35 DEG C to 45 DEG C; then adding the alkali metal hydroxide; keeping the temperature and stirring for 1.5 to 2.5 hours; (2) adding the alkaline-resistant penetrant to the solution obtained in the step (1); stirring for 1.5 to 2.5 hours at the temperature of 60 DEG C to 70 DEG C; and cooling to prepare the desizing agent. The desizing agent has the advantages of complete desizing, small utilization quantity (which is only arounf 15% of the utilization quantity of traditional liquid caustic soda), convenient cleaning, low wastewater yield and small pollution, and reduces the printing and dyeing cost. The preparation method has the advantages of simple preparation technology, easy acquirement of raw material and low production cost.
Description
Technical field
The present invention relates to a kind of concise desizing agent of pre-treatment production process and preparation method thereof of printing and dyeing that is used for.
Background technology
Destarch is a technical process of removing the textile sizing material.The warp thread of fabrics such as cotton, viscose glue and synthetic fiber, mostly earlier through sizing, slurry can influence wettability of fabrics in dyeing and finishing process before weaving, and the obstruction chemicals contacts fiber.Therefore generally all earlier through destarch, the COTTON FABRIC destarch has the effect of removing partial impurities in the fiber concurrently to fabric; Synthetic fabrics sometimes can destarch simultaneously in refinery practice.The method of all kinds of fabric desizings is difference with the used slurry of sizing, and commonly used have following four kinds of methods:
1. hot water destarch method: after fabric pads hot water, in the destarch pond, be incubated and banked up more than ten hour, make the slurry swelling and be easy to the water flush away.This method has good destarch effect for the fabric that uses water miscible sodium alginate, cellulose derivative etc. as slurry.For fabric with the starch starching, under 25～40 ℃, to bank up the long period, the fermentation of giving free rein to, degraded also can obtain the destarch effect.
2. alkali lye destarch method: swelling can take place in starch under NaOH (caustic soda) solution effects, and acrylic acid polymer is prone to dissolving in alkali lye, and excessive high-concentration sodium hydroxide solution capable of using is made desizing agent, and concentration is generally 10～20 grams per liters.Behind the fabric alkali immerging, banked up 6～12 hours at 60～80 ℃; COTTON FABRIC also can be used alkali, sour destarch, and its method is earlier through the alkali lye destarch, and the dilute sulfuric acid that pads concentration after the washing again and be 4～6 grams per liters was banked up several hours, further impelled the starch hydrolysis, and the effect of inorganic salts impurity in the eccysis cotton fiber is arranged.
3. enzyme desizing method: be mainly used in the starch size that decomposes on the fabric, destarch efficient is higher.Amylase is a kind of biocatalyst, and commonly used have amylopsin and a bacterial amylase.It all is AMS that these two kinds of enzymes are mainly formed, and can impel the glucoside bond fission of starch long-chain molecule, generates dextrin and maltose and very easily eccysis from the fabric.The amylase desizing liquid is advisable with nearly neutrality, in use often adds sodium chloride, calcium chloride etc. as the vigor of activator with the raising enzyme.After fabric padded amylase liquid, banking up at 40～50 ℃ to make the abundant hydrolysis of starch in 1～2 hour.Bacterial amylase is heat-resisting than amylopsin, therefore after fabric pads enzyme liquid, also can adopt 3～5 minutes shock processing of decatize, for continuous desizing creates conditions.
4. oxidant destarch method: have multiple oxidant to be suitable for.Fabric is padded in concentration is the hydrogen peroxide alkaline solution of 3～5 grams per liters, through decatize 2～3 minutes, can impel starch, pva degradation again, simultaneously fabric is had certain bleaching effect.During with the sodium bromite destarch; Fabric pads with the sodium bromite solution that pH is 9.5～10.5, effectively bromine concentration is 0.5～1.5 grams per liter; Bank up at normal temperatures about 20 minutes, the fabric of carboxymethyl cellulose, starch or polyvinyl alcohol starching is had good destarch effect.Persulfuric acid ammonium salt or sylvite also have good destarch effect, but are prone to make cellulose fibre tendering.
So far, from consideration to the printing and dyeing cost, the cheap high concentration liquid caustic soda of main employing in the industry; Carry out destarch through alkali lye destarch method, yet the high concentration liquid caustic soda is the chemical raw material of high pollution, deep-etching; Use it to carry out destarch; Exist wastewater flow rate big, seriously polluted, the deficiency of difficult treatment.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes prior art, and a kind of improved desizing agent is provided.
The present invention also will provide a kind of preparation method of above-mentioned desizing agent.
For solving above technical problem, the present invention takes following technical scheme:
A kind of desizing agent of the pre-treatment production process that is used for printing and dyeing, by weight percentage, said desizing agent is made up of following component:
Alkali metal hydroxide 25%～35%;
Alkali metal phosphate 5%～10%;
Alkali silicate 5%～10%;
Alkali-resistant penetrant 2～6%; And surplus is a water.
According to the present invention, said alkali metal hydroxide is preferably potassium hydroxide, NaOH or their mixture.Said alkali metal phosphate is preferably one or more the mixture that is selected from potassium phosphate, sodium phosphate, dipotassium hydrogen phosphate and the sodium hydrogen phosphate.
Said alkali silicate can be sodium metasilicate (preferred modulus is 1.5～3.5 sodium metasilicate), and the flaky silicic acid salt is cloudlike mother and carclazyte; Ring silicate class such as tourmaline; Chain silicate class such as pyroxene; Perhaps, it can also be tectosilicate class such as quartz.
Said alkali-resistant penetrant is various alkaline-resisting non-ionic surface active agents; Preferably, alkali-resistant penetrant is the mixture that alkali-resistant penetrant OEP-70 (commercially available), OAS (isomery alcohol ether sulfuric acid ester) and promoter (organic solubilized surfacant) thereof were formed by weight 3: 3: 4.
Another technical scheme that the present invention takes is: a kind of preparation method of above-mentioned desizing agent, it comprises the steps:
(1), said alkali metal phosphate and alkali silicate are added to the water, in the stirring down of 35 ℃～45 ℃ of temperature, add said alkali metal hydroxide then, insulated and stirred 1.5～2.5h by prescription;
(2), said alkali-resistant penetrant is joined in step (1) the gained solution, stir 1.5～2.5h down for 60 ℃～70 ℃ in temperature, cooling promptly gets said desizing agent.
Because the enforcement of above technical scheme, the present invention compared with prior art has following advantage:
1, desizing agent destarch of the present invention is complete, use amount little (be merely traditional liquid caustic soda use amount about 15%), and convenience for washing, and waste water yields poorly, and pollutes for a short time, can reduce the printing and dyeing cost.
2, simple, the raw material of preparation technology of the present invention is easy to get, and production cost is low.
The specific embodiment
Below in conjunction with specific embodiment the present invention is done further detailed explanation, but the present invention is not limited to following examples.
A kind of desizing agent, it prepares through following steps:
(1), the beaker of getting 1L is put in the constant water bath box; Constant water bath box is set 40 ℃, in beaker, adds 290g water, 25g sodium hydrogen phosphate and 50g sodium metasilicate (modulus 1.5～3.5), stirs; Progressively add 125g NaOH then, keep 90min down at 40 ℃;
(2), get 3g OEP70,3gOAS and 4g promoter Q10 (German BASF) and mix after, join in step (1) the gained solution, be warming up to 65 ℃, insulated and stirred 90min gets light yellow liquid.Cooling promptly gets said desizing agent.
According to said method gained desizing agent, it consists of: NaOH 25%, sodium dihydrogen phosphate 5%, sodium metasilicate 10%, alkali-resistant penetrant 2%, water 58%.
Desizing agent be used for the printing and dyeing measure of merit of pre-treatment production process
Contain damp XX printing and dyeing Co., Ltd in Jiangsu, get 1800 meters grey cloth/cylinders, respectively with embodiment 1 gained desizing agent and 30% liquid caustic soda as desizing agent, take same technology that grey cloth is carried out pre-treatment, dyeing (getting lilac look) compares finished product at last then.Wherein:
(1), take embodiment 1 gained desizing agent: getting the adding of 4kg desizing agent has in the dye vat of 240kg water, is warming up to 100 ℃, and 1800 meters grey cloths are practiced cloth, finishes the back and cleans 2 times, puts into the dyestuff colouring then, cleaning, typing.
(2), take 30% liquid caustic soda as desizing agent: to get in the dye vat that the 30kg liquid caustic soda joins 220kg water, be warming up to 100 ℃, 1800 meters grey cloths are practiced cloth, finish the back and clean 3 times, put into the dyestuff colouring then, clean typing.
Guarantee under the prerequisite of colouring back finished product COLOR FASTNESS and feel basically identical, consumption, generation wastewater flow rate and the cost of two kinds of desizing agents compared, as shown in table 1.
Table 1
Learn that from table 1 desizing agent of the present invention has advantages such as consumption is few, sewage effluent is few, and processing cost is low, environmental pollution is little, satisfies the requirement of synergy, reduction of discharging, cleaner production.
More than the present invention has been done detailed description; Its purpose is to let the personage that is familiar with this art can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences of doing according to spirit of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (5)
1. the desizing agent of the pre-treatment production process that is used for printing and dyeing, it is characterized in that: by weight percentage, said desizing agent is made up of following component:
Alkali metal hydroxide 25%～35%;
Alkali metal phosphate 5%～10%;
Alkali silicate 5%～10%;
Alkali-resistant penetrant 2～6%; And surplus is water,
Said alkali-resistant penetrant is the mixture that OEP-70, OAS and promoter thereof were formed by weight 3: 3: 4, and wherein said promoter is the organic solubilized surfacant.
2. desizing agent according to claim 1 is characterized in that: said alkali metal hydroxide is potassium hydroxide, NaOH or their mixture.
3. desizing agent according to claim 1 is characterized in that: said alkali metal phosphate is one or more the mixture that is selected from potassium phosphate, sodium phosphate, dipotassium hydrogen phosphate and the sodium hydrogen phosphate.
4. desizing agent according to claim 1 is characterized in that: said alkali silicate is a sodium metasilicate.
5. the preparation method of the described desizing agent of each claim in the claim 1 to 4 is characterized in that: comprise the steps:
(1), said alkali metal phosphate and alkali silicate are added to the water, in the stirring down of 35 ℃～45 ℃ of temperature, add said alkali metal hydroxide then, insulated and stirred 1.5～2.5h by prescription;
(2), said alkali-resistant penetrant is joined in step (1) the gained solution, stir 1.5～2.5h down for 60 ℃～70 ℃ in temperature, cooling promptly gets said desizing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101502878A CN101831793B (en) | 2010-04-15 | 2010-04-15 | Desizing agent for production process in pretreatment of printing and dyeing and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101502878A CN101831793B (en) | 2010-04-15 | 2010-04-15 | Desizing agent for production process in pretreatment of printing and dyeing and preparation method thereof |
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| CN101831793A CN101831793A (en) | 2010-09-15 |
| CN101831793B true CN101831793B (en) | 2012-02-22 |
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| CN2010101502878A Expired - Fee Related CN101831793B (en) | 2010-04-15 | 2010-04-15 | Desizing agent for production process in pretreatment of printing and dyeing and preparation method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422337B (en) * | 2013-08-23 | 2015-08-19 | 江苏高博智融科技有限公司 | A kind of compound destarch auxiliary agent |
| CN109137505B (en) * | 2018-07-25 | 2020-12-29 | 安徽新生纺织有限公司 | Method for recycling textile size |
| CN109355948A (en) * | 2018-08-22 | 2019-02-19 | 五邑大学 | A kind of liquid substitute alkali and preparation method thereof |
| CN110725137A (en) * | 2019-10-17 | 2020-01-24 | 嘉兴市蓝蝶服饰有限公司 | Printing and dyeing process for underwear fabric |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5234463A (en) * | 1990-09-19 | 1993-08-10 | Sando Iron Works Co., Ltd. | Method for desizing and scouring of a cloth |
| CN1098457A (en) * | 1993-05-17 | 1995-02-08 | 盐城市潘黄化学厂 | The efficient cryogenic refining agent |
| US5980581A (en) * | 1998-09-08 | 1999-11-09 | The Virkler Company | Process for desizing and cleaning woven fabrics and garments |
| CN101638843A (en) * | 2009-08-18 | 2010-02-03 | 石狮市万峰盛漂染织造有限公司 | Desizing agent used in woven fabric de-dyeing one-bath process and method for preparing same |
-
2010
- 2010-04-15 CN CN2010101502878A patent/CN101831793B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5234463A (en) * | 1990-09-19 | 1993-08-10 | Sando Iron Works Co., Ltd. | Method for desizing and scouring of a cloth |
| CN1098457A (en) * | 1993-05-17 | 1995-02-08 | 盐城市潘黄化学厂 | The efficient cryogenic refining agent |
| US5980581A (en) * | 1998-09-08 | 1999-11-09 | The Virkler Company | Process for desizing and cleaning woven fabrics and garments |
| CN101638843A (en) * | 2009-08-18 | 2010-02-03 | 石狮市万峰盛漂染织造有限公司 | Desizing agent used in woven fabric de-dyeing one-bath process and method for preparing same |
Non-Patent Citations (1)
| Title |
|---|
| 罗巨涛，吴建华.弱碱性条件下涤/棉混纺织物退煮漂一浴法的研究.《染整前处理学术论文、资料选辑》.1991,第203页. * |
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