阅读说明：本技术 羊毛或羊绒活性染料的低温染色助剂及制备方法及应用 (Low-temperature dyeing auxiliary agent of wool or cashmere reactive dye, preparation method and application ) 是由 徐成书 邢建伟 欧阳磊 王立 任燕 苏广召 陆少锋 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种羊毛或羊绒活性染料的低温染色助剂及制备方法及应用,按质量百分比计,原料包括20.0％～40.0％的阳离子化平平加O-10溶液、10.0％～20.0％的平平加O-20和40.0～70.0％的水,以上组分的含量总和为100％,本发明还公开了采用此低温染色助剂对羊毛、羊绒纤维进行Lanasol毛用活性染料低温染色的方法,低温染色助剂兼具低温促染、匀染、润湿渗透性功能,降低染色温度与降低纤维的染色损伤,并简化了羊毛、羊绒的染色工艺,有利于改善染色纤维的梳纺性能及染色制成品的品质。(The invention discloses a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye and a preparation method and application thereof, wherein the raw materials comprise 20.0-40.0% of cationized peregal O-10 solution, 10.0-20.0% of peregal O-20 and 40.0-70.0% of water by mass percentage, and the sum of the contents of the components is 100%.)

1. The low-temperature dyeing auxiliary agent for the wool or cashmere reactive dye is characterized by comprising 20.0-40.0 mass percent of cationized peregal O-10 solution, 10.0-20.0 mass percent of peregal O-20 and 40.0-70.0 mass percent of water.

2. A preparation method of a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye is characterized by comprising the following specific steps:

s1, preparing a cationized peregal O-10 solution;

s2, diluting the cationized peregal O-10 solution with water, heating, adding peregal O-20 for dissolution, and obtaining the low-temperature dyeing auxiliary agent of the wool or cashmere fiber reactive dye.

3. The preparation method according to claim 2, wherein in step S1, the solution of peregal O-10 and the solution of 2, 3-epoxypropyltrimethylammonium chloride are mixed and heated, and then the pH is adjusted to 6-8, so as to obtain the cationized peregal O-10 solution.

4. The preparation method according to claim 3, wherein in step S1, 17.0% of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, 3.0% of sodium hydroxide and 38.0-38.5% of water are mixed by mass percent and reacted at room temperature for 30-60 min to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

5. The method according to claim 4, wherein in step S1, 41.0% by weight of peregal O-10 is added to a solution of 2, 3-epoxypropyltrimethylammonium chloride to obtain a 50% cationic peregal O-10 solution.

6. The preparation method according to claim 3, wherein the temperature rise is from 80 ℃ to 95 ℃ and is from 60min to 120 min.

7. The production method according to claim 2, wherein the temperature is raised to 40 ℃ to 50 ℃ in step S2.

8. The application of the low-temperature dyeing auxiliary agent for the wool or cashmere reactive dye as claimed in claim 1 is characterized by comprising the following specific steps:

s1, adding a reactive dye low-temperature dyeing auxiliary agent, acetic acid and a reactive dye material into wool or cashmere fiber to be dyed in sequence;

s3, heating to 90 ℃ at a speed of 1 ℃/min, preserving heat for 30-60 min for dyeing, cooling after dyeing, adjusting the pH value to 8.0-8.5, and preserving heat for 20 min;

s4 washing the wool or cashmere fiber treated in the step S2 with hot water at 70 ℃ for 1-3 times, adding 0.5% (owf) -1.0% (owf) acetic acid to adjust the pH value to 5.0-6.0, treating for 10min at 40 ℃, dehydrating and drying the wool.

9. The use according to claim 6, wherein in step S1, 1.0% (owf) to 3.0% (owf) of low temperature dyeing assistant, 0.5% (owf) to 3.0% (owf) of acetic acid diluted with water, 0.5% (owf) to 5.0% (owf) of wool reactive dye Lanasol are used, and the low temperature dyeing assistant, the acetic acid and the Lanasol dye are added for an interval of 5min to 10 min; and (3) circulating the wool or cashmere fibers and the soft water for 10-20 min according to the bath ratio (7-15) to 1.

10. The use of claim 6, wherein step S3 is carried out by adjusting the pH value with 1.0% (owf) to 6.0% (owf) soda ash, which is industrial soda ash.

Technical Field

The invention belongs to the technical field of dyeing and finishing, and particularly relates to a low-temperature dyeing auxiliary agent of a wool or cashmere reactive dye, and a preparation method and application thereof.

Background

In the dyeing of wool and cashmere, the reactive dye for wool has the advantages of bright color, excellent color fastness, convenient application and the like, and is widely applied. The scale layer with a compact structure exists on the surface of the wool and cashmere fibers, so that the scale layer can prevent dye from being adsorbed and dyed in the dyeing process. Therefore, the dyeing processing of wool and cashmere fiber adopts high temperature dyeing all the time, wool is mostly boiled and dyed at 98 ℃, and the cashmere dyeing temperature is generally 95 ℃. The high-temperature dyeing has the advantages of high energy consumption and high cost, and serious damage can be caused to wool and cashmere after long-time processing, such as reduction of fiber strength, shortening of length, yellowing, poor hand feeling and the like, so that adverse effects are brought to subsequent carding and spinning processing, and the internal quality of wool and cashmere products is also reduced. Aiming at the development situation of the current industry and a plurality of problems in the practical production of wool and cashmere fiber dyeing, the research and the application of the novel low-temperature dyeing technology have practical significance.

At present, the low-temperature dyeing research on wool and cashmere fibers mainly relates to the technical methods of a low-temperature plasma technology, a biological enzyme technology, a urea method, a thiourea method, a formic acid method, a glyoxal/hydrogen peroxide method, a low-temperature dyeing auxiliary agent method and the like. The low-temperature plasma technology has high requirements on equipment and high cost, and is difficult to be applied in large scale to the textile industry with relatively low added value of products; the biological enzyme technology is mainly characterized in that the resistance of the dye to dye the fibers is reduced by partial hydrolysis of wool scales by enzyme, the low-temperature dye-uptake is realized, the main structure of the wool fibers is damaged by the biological enzyme, and the process controllability is poor; the urea method and the thiourea method mainly have the problems of high urea usage amount, high cost, low production efficiency and the like in the practical application process; in the practical application process of the formic acid method, the problems of high formic acid consumption, large corrosion to equipment, large limitation of dyeing color and the like, poor dyeing uniformity and the like mainly exist; the main problems of the glyoxal/hydrogen peroxide method in practice are that a reducing agent and an oxidizing agent are used simultaneously, the production process is difficult to control, and the dyeing uniformity and the color fastness are poor; the industrial application of the method in practical production is limited by various problems of the method. The low-temperature dyeing auxiliary method is a relatively systematic and mature technology at present, and has achieved a certain achievement in low-temperature dyeing research and application of wool-mediated dye and acid dye, but the application research of the low-temperature dyeing auxiliary method in low-temperature dyeing of wool reactive dye is still less, mainly has the problems of poor color fastness, incapability of guaranteeing the exhaustion degree and the like when dyeing deep color, and although part of low-temperature dyeing auxiliary agents can improve the exhaustion degree of dye by accelerating the dyeing rate of dye, the problem of poor dyeing uniformity is easy to occur.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye, a preparation method and application thereof, which are mainly suitable for dyeing and processing wool, cashmere loose fibers and wool tops, can reduce the dyeing temperature of the wool and the cashmere, have good level-dyeing property, ensure that the color depth of a final dyed product is consistent with that of a high-temperature dyed product, reduce dyeing damage, improve the combing and spinning performance of dyed fibers and improve the internal quality of the dyed product.

In order to achieve the purpose, the invention provides the following technical scheme: the low temperature dyeing assistant for wool or cashmere reactive dye consists of cationic peregal O-10 solution in 20.0-40.0 wt%, peregal O-20 in 10.0-20.0 wt% and water in 40.0-70.0 wt%.

The invention also provides a preparation method of the low-temperature dyeing auxiliary agent for the wool or cashmere reactive dye, which comprises the following specific steps:

s1, preparing a cationized peregal O-10 solution;

s2, diluting the cationized peregal O-10 solution with water, heating, adding peregal O-20 for dissolution, and obtaining the low-temperature dyeing auxiliary agent of the wool or cashmere fiber reactive dye.

Further, in step S1, mixing peregal O-10 and a 2, 3-epoxypropyl trimethyl ammonium chloride solution, heating, and adjusting the pH value to 6-8 to obtain a cationized peregal O-10 solution.

Further, in step S1, 17.0% by mass of 3-chloro-2-hydroxypropyl trimethylammonium chloride, 3.0% by mass of sodium hydroxide, and 38.0 to 38.5% by mass of water are mixed and reacted at room temperature for 30 to 60 minutes to obtain a 2, 3-epoxypropyl trimethylammonium chloride solution.

Further, in step S1, 41.0% by mass of peregal O-10 is added to the solution of 2, 3-epoxypropyltrimethylammonium chloride to obtain a 50% cationic peregal O-10 solution.

Further, the temperature is raised to 80-95 ℃ and is kept for 60-120 min.

Further, in step S2, the temperature is raised to 40 to 50 ℃.

The invention also provides an application of the low-temperature dyeing auxiliary agent of the wool or cashmere reactive dye, which comprises the following specific steps:

s1, adding a reactive dye low-temperature dyeing auxiliary agent, acetic acid and a reactive dye material into wool or cashmere fiber to be dyed in sequence;

s3, heating to 90 ℃ at a speed of 1 ℃/min, preserving heat for 30-60 min for dyeing, cooling after dyeing, adjusting the pH value to 8.0-8.5, and preserving heat for 20 min;

s4 washing the wool or cashmere fiber treated in the step S2 with hot water at 70 ℃ for 1-3 times, adding 0.5% (owf) -1.0% (owf) acetic acid to adjust the pH value to 5.0-6.0, treating for 10min at 40 ℃, dehydrating and drying the wool.

Further, in step S1, 1.0% (owf) to 3.0% (owf) of a low-temperature dyeing assistant, 0.5% (owf) to 3.0% (owf) of acetic acid diluted with water, 0.5% (owf) to 5.0% (owf) of a wool reactive dye Lanasol are adopted, and the interval time between the low-temperature dyeing assistant, the acetic acid and the Lanasol dye is 5min to 10 min; and (3) circulating the wool or cashmere fibers and the soft water for 10-20 min according to the bath ratio (7-15) to 1.

Further, step S3 uses soda ash of 1.0% (owf) to 6.0% (owf) to adjust the pH value, wherein the soda ash is industrial.

Compared with the prior art, the invention has at least the following beneficial effects:

the invention provides a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye, which is prepared by cationizing peregal O-10 and compounding a cationized peregal O-10 solution and peregal O-20, and has the advantages of effectively improving the fiber dyeing ability and the fiber internal diffusion ability of the dye when the auxiliary agent molecule coexists with the dye molecule in the dyeing solution in the low-temperature dyeing auxiliary agent dyeing process, having the functions of low-temperature dyeing promotion, level dyeing and wetting permeability, reducing the dyeing temperature and reducing the fiber dyeing damage, and having an excellent swelling property for the fiber, and effectively improving the dye utilization rate. The low-temperature dyeing auxiliary disclosed by the invention is used for dyeing wool and cashmere reactive dyes at low temperature, so that the dyeing bath temperature of wool and cashmere is reduced, the dyeing damage of wool and cashmere is reduced, the depth of a final dyed product can reach the color depth level consistent with that of high-temperature dyeing, the color brightness and the brightness are better, the combing and spinning performance of dyed fibers is improved, and the internal quality of the dyed product is improved.

Detailed Description

The present invention will be further described with reference to the following embodiments.

The invention provides a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye, which comprises the following raw materials in percentage by mass: 20.0 to 40.0 percent of cationized peregal O-10 solution, 10.0 to 20.0 percent of peregal O-20 and 40.0 to 70.0 percent of water, wherein the total content of the components is 100 percent.

Preferably, the peregal O-10 and peregal O-20 are fatty alcohol-polyoxyethylene ether, and have the structural characteristics that: peregal O-10: r- (CH)₂CH₂O)₁₀-H，R＝C_16-18H_33-37(ii) a Peregal O-20: r- (CH)₂CH₂O)₂₀-H，R＝C_16-18H_33-37。

The invention provides a preparation method of a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye, which comprises the following steps:

step 1, preparing a cationized peregal O-10 solution, which is specifically implemented according to the following steps:

step 1.1, weighing 17.0% of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (with the content of 70%), 3.0% of sodium hydroxide, 41.0% of peregal O-10, 0.5-1.0% of organic acid and 38.0-38.5% of water in percentage by mass;

and step 1.2, mixing the water weighed in the step 1.1, 3-chlorine-2-hydroxypropyl trimethyl ammonium chloride and sodium hydroxide in a stirring device, reacting at room temperature for 30-60 min, and removing hydrochloric acid to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

Step 1.3, adding peregal O-10 into the 2, 3-epoxypropyl trimethyl ammonium chloride solution obtained in the step 1.2, heating to 80-95 ℃, carrying out heat preservation reaction for 60-120 min, and adding a proper amount of organic acid to adjust the pH value to 6-8, so as to obtain a cationized peregal O-10 solution with the content of 50%.

Step 2, adding peregal O-20 into the cationized peregal O-10 solution obtained in the step 1, and mixing to prepare the low-temperature dyeing auxiliary agent, wherein the preparation method is implemented according to the following steps:

step 2.1, respectively weighing 20.0-40.0% of cationized peregal O-10 solution, 10.0-20.0% of peregal O-20 and 40.0-70.0% of water by mass percent, wherein the sum of the contents of the components is 100%.

And 2.2, adding the water weighed in the step 2.1 into the cationized peregal O-10 solution for dilution, heating to 40-50 ℃, adding peregal O-20, and fully stirring for dissolving to obtain the low-temperature dyeing auxiliary agent.

The invention provides an application of a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye, which comprises the following process steps:

step 1, material melting: 1.0-3.0% (owf) of wool low-temperature dyeing auxiliary agent is melted by a water-warming machine according to the mass ratio of 1:4, 0.5-3.0% (owf) of acetic acid is diluted by water according to the mass ratio of 1:10, and 0.5-5.0% (owf) of wool reactive dye Lanasol is fully stirred and dissolved by warm water at 40-60 ℃;

step 2, preparation of dyed fibers: weighing wool and cashmere loose fibers or wool tops, adding the wool and cashmere loose fibers or wool tops into a main cylinder of a dyeing machine, sealing the cylinder cover of the main cylinder, injecting soft water according to a bath ratio (7-15): 1, and starting a main pump of the dyeing machine to circulate for 10-20 min;

step 3, material conveying: and (2) sequentially conveying the dissolved and diluted low-temperature dyeing auxiliary, acetic acid and the Lanasol dye from the material melting tank into a main tank of the dyeing machine, wherein the interval time is 5-10 min, the auxiliary is uniformly distributed in a dye bath, and in addition, a dye conveying system and an auxiliary conveying system are separated in the actual production process, so that the dye auxiliary is conveyed separately.

Step 4, dyeing: after the auxiliary agent and the dye are added into a main cylinder of the dyeing machine, starting a dyeing process, wherein the specific dyeing process is as follows: heating to 90 ℃ at the speed of 1 ℃/min, and keeping the temperature for 30-60 min;

and step 5, post-treatment: after dyeing is finished, cooling to 80 ℃ through heat exchange, adding 1.0-6.0% (owf) of soda ash to adjust the pH value to 8.0-8.5, and continuing to preserve heat for 20 min;

step 6, discharging liquor after the soda treatment is finished, cleaning the liquor for 1-3 times by using hot water at the temperature of 70 ℃, adding 0.5-1.0% (owf) of acetic acid to adjust the pH value to 5.0-6.0, and treating the liquor for 10min at the temperature of 40 ℃;

and 7, taking out the wool, dehydrating and drying.

Preferably, the acetic acid in step 1 and step 6 is glacial acetic acid;

preferably, the calcined soda in the step 5 is an industrial product.

Example 1

Step 1, preparing a cationized peregal O-10 solution, which is specifically implemented according to the following steps:

step 1.1, mixing 17.0 percent of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (with the content of 70 percent), 3.0 percent of sodium hydroxide and 38 percent of water in a stirring device by mass percent, reacting for 30min at room temperature, and removing hydrochloric acid to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

Step 1.2, adding 41.0% of peregal O-10 into a 2, 3-epoxypropyl trimethyl ammonium chloride solution, heating to 80 ℃, carrying out heat preservation reaction for 120min, adding 1.0% of organic acid, and adjusting the pH value to 6-8 to obtain a cationized peregal O-10 solution with the content of 50%.

Step 2, adding peregal O-20 into the cationized peregal O-10 solution obtained in the step 1, and mixing to prepare the low-temperature dyeing auxiliary agent, wherein the preparation method is implemented according to the following steps:

step 2.1, weighing the following materials in percentage by mass: 20 percent of cationized peregal O-10 solution, 60 percent of peregal O-20 and 60 percent of water, wherein the total content of the components is 100 percent.

And 2.2, adding the water weighed in the step 2.1 into the cationized peregal O-10 solution for dilution, heating to 40 ℃, adding 20% peregal O-20, and fully stirring to dissolve the peregal O-20 to obtain the low-temperature dyeing auxiliary agent.

The method for dyeing wool tops Lanasol wool at low temperature by using the low-temperature dyeing auxiliary agent comprises the following process steps:

step 1, material melting: the low-temperature dyeing auxiliary agent is mixed according to the mass ratio of 1: 4; acetic acid (98%) is diluted according to the mass ratio of 1: 10; the active dye for the Lanasol wool is fully dissolved by warm water at 40-60 ℃;

step 2, weighing hair wetting: accurately weighing wool tops, rolling the wool tops on a rolling machine, adding the wool tops into a main cylinder of a dyeing machine in a wool ball form, sealing a cylinder cover of the main cylinder, introducing soft water according to a bath ratio of 8:1, and starting a main pump of the dyeing machine to circulate for 10 min;

step 3, material conveying: the dosage of the low-temperature dyeing auxiliary agent is 1.5% owf, the materials are melted according to the step 1 and then are transmitted into a main cylinder of the dyeing machine, and the circulation is carried out for 5 min; weighing 1.6% (owf) of acetic acid (98%) according to the step 1, diluting, transferring into a main cylinder of a dyeing machine, and circulating for 5 min; lanasol blue 3G 1.15% (owf), Lanasol Red 6G 0.18% (owf) were weighed; 0.26 percent (owf) of Lanasol yellow 4G, and conveying the Lanasol yellow into a main cylinder of the dyeing machine after being dissolved according to the step 1;

step 4, dyeing: after the auxiliary agent and the dye are added into a main cylinder of the dyeing machine, starting a dyeing process, wherein the specific dyeing process is as follows: heating to 90 deg.C at 1 deg.C/min, and maintaining for 60 min;

and step 5, post-treatment: after dyeing is finished, cooling to 80 ℃ through heat exchange, adding 3.0 percent of soda ash (owf), adding soft water into soda ash powder for dilution, transferring the diluted soda ash powder into a main cylinder of a dyeing machine, adjusting the pH value to 8.0-8.5, and continuously preserving heat for 20 min;

step 6, discharging liquor after the soda treatment is finished, washing the liquor for 2 times by hot water at 70 ℃, adding 0.5 percent (owf) of acetic acid (98 percent) to adjust the pH value to 5.0-6.0, and treating the liquor for 10min at 40 ℃;

and 7, taking out the wool, dehydrating and drying.

Step 8, comparing test results, specifically shown in table 1:

table 1 example 1 wool dyeing physicochemical test results of low temperature dyeing process and conventional dyeing process

According to the data in the table 1, the color depth and the color fastness of the low-temperature dyed wool are consistent with those of the traditional high-temperature dyeing, and the hand feeling of the low-temperature dyed wool is softer and more fluffy than that of the wool dyed by the traditional high-temperature process, which indicates that the damage of the low-temperature dyed wool fiber is smaller.

Example 2

Step 1, preparing a cationized peregal O-10 solution, which is specifically implemented according to the following steps:

step 1.1, mixing 17.0 percent of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (with the content of 70 percent), 3.0 percent of sodium hydroxide and 38 percent of water in a stirring device by mass percent, reacting for 45min at room temperature, and removing hydrochloric acid to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

Step 1.2, adding 41% of peregal O-10 into a 2, 3-epoxypropyl trimethyl ammonium chloride solution, heating to 90 ℃, carrying out heat preservation reaction for 90min, adding 1% of organic acid, and adjusting the pH value to 6-8 to obtain a cationized peregal O-10 solution with the content of 50%.

Step 2, adding peregal O-20 into the cationized peregal O-10 solution obtained in the step 1, and mixing to prepare the low-temperature dyeing auxiliary agent, wherein the preparation method is implemented according to the following steps:

step 2.1, weighing the following materials in percentage by mass: 32 percent of cationized peregal O-10 solution, 54 percent of peregal O-2014 and 54 percent of water, wherein the total content of the components is 100 percent.

And 2.2, adding the water weighed in the step 2.1 into the cationized peregal O-10 solution for dilution, heating to 45 ℃, adding peregal O-20, and fully stirring for dissolving to obtain the low-temperature dyeing auxiliary agent.

The third technical scheme of the invention provides a method for low-temperature dyeing of wool reactive dye for cashmere fiber Lanasol by using the low-temperature dyeing auxiliary agent, which comprises the following process steps:

step 1, material melting: the low-temperature dyeing auxiliary agent is mixed according to the mass ratio of 1: 4; acetic acid (98%) is diluted according to the mass ratio of 1: 10; the active dye for the Lanasol wool is fully dissolved by warm water at the temperature of 40-60 ℃;

step 2, weighing down and wetting: accurately weighing cashmere fibers, adding the cashmere fibers into a main cylinder of a dyeing machine in a loose fiber form, sealing a cylinder cover of the main cylinder, introducing soft water according to a bath ratio of 10:1, and starting a main pump of the dyeing machine to circulate for 20 min;

step 3, material conveying: 2.0 percent (owf) of low-temperature dyeing auxiliary agent is used, the materials are melted according to the step 1 and then are transmitted into a main cylinder of the dyeing machine, and the circulation is carried out for 5 min; weighing 1.0% (owf) of acetic acid (98%) according to the step 1, diluting, transferring into a main cylinder of a dyeing machine, and circulating for 5 min; lanasol blue 3R 0.8% (owf), Lanasol Red 6G 0.11% (owf) were weighed; 0.16 percent (owf) of Lanasol blue 3G, which is dissolved according to the step 1 and then is transmitted into a main cylinder of the dyeing machine;

step 4, dyeing: after the auxiliary agent and the dye are added into a main cylinder of the dyeing machine, starting a dyeing process, wherein the specific dyeing process is as follows: heating to 90 deg.C at 1 deg.C/min, and maintaining for 50 min;

and step 5, post-treatment: after dyeing is finished, cooling to 80 ℃ through heat exchange, adding 2.5 percent of soda ash (owf), diluting soda ash powder with soft water, transferring the diluted soda ash powder into a main cylinder of a dyeing machine, adjusting the pH value to 8.0-8.5, and continuously preserving heat for 20 min;

step 6, discharging liquor after the soda treatment is finished, performing hot washing for 1 time at 70 ℃, adding 0.5 percent (owf) of acetic acid (98 percent) to adjust the pH value to 5.0-6.0, and treating for 10min at 40 ℃;

and 7, taking out the cashmere, and dehydrating and drying the cashmere.

Step 8, comparing test results, specifically shown in table 2:

table 2 example 2 cashmere dyeing physicochemical detection results of low temperature dyeing process and traditional dyeing process

According to the data in table 2, the color depth and the color fastness of the low-temperature dyed cashmere are consistent with those of the traditional high-temperature dyeing, the low-temperature dyed cashmere is bright in color, soft and fluffy in hand feeling, and has better hand feeling compared with the traditional high-temperature process dyed cashmere, the carding performance of the low-temperature dyed cashmere is good, and the damage of the low-temperature dyed cashmere fiber is small.

Example 3

Step 1, preparing a cationized peregal O-10 solution, which is specifically implemented according to the following steps:

step 1.1, mixing 17.0% of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (70% of content), 3.0% of sodium hydroxide and 38.5% of water in percentage by mass in a stirring device, reacting at room temperature for 60min, and removing hydrochloric acid to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

Step 1.2, adding peregal O-10 into the 2, 3-epoxypropyl trimethyl ammonium chloride solution obtained in the step 1.2, heating to 95 ℃, carrying out heat preservation reaction for 60min, adding 0.5% of organic acid, and adjusting the pH value to 6-8 to obtain a cationized peregal O-10 solution with the content of 50%.

Step 2, adding peregal O-20 into the cationized peregal O-10 solution obtained in the step 1, and mixing to prepare the low-temperature dyeing auxiliary agent, wherein the preparation method is implemented according to the following steps:

step 2.1, weighing the following materials in percentage by mass: 36.0 percent of cationized peregal O-10 solution, 52.0 percent of peregal O-2012.0 percent of water, and the sum of the contents of the components is 100 percent.

And 2.2, adding the water weighed in the step 2.1 into the cationized peregal O-10 solution for dilution, heating to 50 ℃, adding peregal O-20, and fully stirring for dissolving to obtain the low-temperature dyeing auxiliary agent.

The third technical scheme of the invention provides a method for dyeing wool top Lanasol wool at low temperature by using the low-temperature dyeing auxiliary agent, which comprises the following process steps:

step 1, material melting: the low-temperature dyeing auxiliary agent is mixed according to the mass ratio of 1: 4; acetic acid (98%) is diluted according to the mass ratio of 1: 10; the active dye for the Lanasol wool is fully dissolved by warm water at the temperature of 40-60 ℃;

step 2, weighing hair wetting: accurately weighing wool tops, rolling the wool tops on a rolling machine, adding the wool tops into a main cylinder of a dyeing machine in a wool ball form, sealing a cylinder cover of the main cylinder, introducing soft water according to a bath ratio of 7:1, and starting a main pump of the dyeing machine to circulate for 15 min;

step 3, material conveying: 3.0 percent (owf) of low-temperature dyeing auxiliary agent is used, the materials are melted according to the step 1 and then are transmitted into a main cylinder of the dyeing machine, and the circulation is carried out for 8 min; weighing 3.0 percent (owf) of acetic acid (98 percent) according to the step 1, then transferring the diluted acetic acid into a main cylinder of a dyeing machine, and circulating for 8 min; lanasol Red 6G 4.2% (owf) was weighed; 0.8 percent (owf) of Lanasol yellow 4G, and conveying the Lanasol yellow into a main cylinder of the dyeing machine after being dissolved according to the step 1;

step 4, dyeing: after the auxiliary agent and the dye are added into a main cylinder of the dyeing machine, starting a dyeing process, wherein the specific dyeing process is as follows: heating to 90 deg.C at 1 deg.C/min, and maintaining for 60 min;

and step 5, post-treatment: after dyeing is finished, cooling to 80 ℃ through heat exchange, adding 5.6 percent of soda ash (owf), adding soft water into soda ash powder for dilution, transferring the diluted soda ash powder into a main cylinder of a dyeing machine, adjusting the pH value to 8.0-8.5, and continuously preserving heat for 20 min;

step 6, discharging liquor after the soda treatment is finished, washing the liquor for 3 times by hot water at 70 ℃, adding 1 percent (owf) of acetic acid (98 percent) to adjust the pH value to 5.0-6.0, and treating the liquor for 10min at 40 ℃;

and 7, taking out the wool, dehydrating and drying.

Example 4

Step 1, preparing a cationized peregal O-10 solution, which is specifically implemented according to the following steps:

step 1.1, mixing 17.0 percent of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (with the content of 70 percent), 3.0 percent of sodium hydroxide and 38 percent of water in a stirring device by mass percent, reacting for 30min at room temperature, and removing hydrochloric acid to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

Step 1.2, adding peregal O-10 into the 2, 3-epoxypropyl trimethyl ammonium chloride solution obtained in the step 1.2, heating to 80-95 ℃, carrying out heat preservation reaction for 60min, adding 1% of organic acid, and adjusting the pH value to 6-8 to obtain a cationized peregal O-10 solution with the content of 50%.

Step 2, adding peregal O-20 into the cationized peregal O-10 solution obtained in the step 1, and mixing to prepare the low-temperature dyeing auxiliary agent, wherein the preparation method is implemented according to the following steps:

step 2.1, weighing the following materials in percentage by mass: 30.0 percent of cationized peregal O-10 solution, 55.0 percent of peregal O-2015.0 percent of water, and the sum of the contents of the components is 100 percent.

And 2.2, adding the water weighed in the step 2.1 into the cationized peregal O-10 solution for dilution, heating to 50 ℃, adding peregal O-20, and fully stirring for dissolving to obtain the low-temperature dyeing auxiliary agent.

The method for dyeing the wool of the cashmere fiber Lanasol at the low temperature by using the low-temperature dyeing auxiliary agent comprises the following process steps:

step 1, material melting: the low-temperature dyeing auxiliary agent is mixed according to the mass ratio of 1: 4; acetic acid (98%) is diluted according to the mass ratio of 1: 10; the active dye for the Lanasol wool is fully dissolved by warm water at the temperature of 40-60 ℃;

step 2, weighing down and wetting: accurately weighing cashmere fibers, adding the cashmere fibers into a main cylinder of a dyeing machine in a loose fiber form, sealing a cylinder cover of the main cylinder, introducing soft water according to a bath ratio of 15:1, and starting a main pump of the dyeing machine to circulate for 20 min;

step 3, material conveying: 2.5 percent (owf) of low-temperature dyeing auxiliary agent is used, the materials are melted according to the step 1 and then are transmitted into a main cylinder of the dyeing machine, and the circulation is carried out for 5 min; weighing 2.2% (owf) of acetic acid (98%) according to the step 1, diluting, transferring into a main cylinder of a dyeing machine, and circulating for 5 min; weighing Lanasol yellow 4G 2.2% (owf) and Lanasol blue 3G 2.0% (owf), melting according to step 1, and transferring into a main cylinder of a dyeing machine;

step 4, dyeing: after the auxiliary agent and the dye are added into a main cylinder of the dyeing machine, starting a dyeing process, wherein the specific dyeing process is as follows: heating to 90 deg.C at 1 deg.C/min, and maintaining for 60 min;

and step 5, post-treatment: after dyeing is finished, cooling to 80 ℃ through heat exchange, adding 4.0 percent of soda ash (owf), diluting soda ash powder with soft water, transferring the diluted soda ash powder into a main cylinder of a dyeing machine, adjusting the pH value to 8.0-8.5, and continuously preserving heat for 20 min;

step 6, discharging liquor after the soda treatment is finished, performing hot washing for 3 times at 70 ℃, adding 0.75 percent (owf) of acetic acid (98 percent) to adjust the pH value to 5.0-6.0, and treating for 10min at 40 ℃;

and 7, taking out the cashmere fibers, and dehydrating and drying the cashmere fibers.

Example 5

Step 1, preparing a cationized peregal O-10 solution, which is specifically implemented according to the following steps:

step 1.1, mixing 17.0 percent of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (with the content of 70 percent), 3.0 percent of sodium hydroxide and 38 percent of water in a stirring device by mass percent, reacting for 30min at room temperature, and removing hydrochloric acid to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

Step 1.2, adding 41.0% of peregal O-10 into a 2, 3-epoxypropyl trimethyl ammonium chloride solution, heating to 80 ℃, carrying out heat preservation reaction for 120min, adding 1.0% of organic acid, and adjusting the pH value to 6-8 to obtain a cationized peregal O-10 solution with the content of 50%.

Step 2, adding peregal O-20 into the cationized peregal O-10 solution obtained in the step 1, and mixing to prepare the low-temperature dyeing auxiliary agent, wherein the preparation method is implemented according to the following steps:

step 2.1, weighing the following materials in percentage by mass: 40 percent of cationized peregal O-10 solution, 50 percent of peregal O-10 and 50 percent of water, wherein the total content of the components is 100 percent.

And 2.2, adding the water weighed in the step 2.1 into the cationized peregal O-10 solution for dilution, heating to 40 ℃, adding peregal O-20, and fully stirring for dissolving to obtain the low-temperature dyeing auxiliary agent.

The method for dyeing wool tops Lanasol wool at low temperature by using the low-temperature dyeing auxiliary agent comprises the following process steps:

step 1, material melting: the low-temperature dyeing auxiliary agent is mixed according to the mass ratio of 1: 4; acetic acid (98%) is diluted according to the mass ratio of 1: 10; the active dye for the Lanasol wool is fully dissolved by warm water at 40-60 ℃;

step 2, weighing hair wetting: accurately weighing wool tops, rolling the wool tops on a rolling machine, adding the wool tops into a main cylinder of a dyeing machine in a wool ball form, sealing a cylinder cover of the main cylinder, introducing soft water according to a bath ratio of 8:1, and starting a main pump of the dyeing machine to circulate for 15 min;

step 3, material conveying: the dosage of the low-temperature dyeing auxiliary agent is 1% owf, the materials are melted according to the step 1 and then are transmitted into a main cylinder of the dyeing machine, and the circulation is carried out for 5 min; weighing 3 percent (owf) of acetic acid (98 percent) according to the step 1, then transferring the diluted acetic acid into a main cylinder of a dyeing machine, and circulating for 10 min; weighing Lanasol red 6G 0.5% (owf), melting according to the step 1, and then transferring into a main cylinder of a dyeing machine;

step 4, dyeing: after the auxiliary agent and the dye are added into a main cylinder of the dyeing machine, starting a dyeing process, wherein the specific dyeing process is as follows: heating to 90 deg.C at 1 deg.C/min, and maintaining for 30 min;

and step 5, post-treatment: after dyeing is finished, cooling to 80 ℃ through heat exchange, adding 1.0% (owf) of soda ash, adding soft water into soda ash powder for dilution, transferring the diluted soda ash powder into a main cylinder of a dyeing machine, adjusting the pH value to 8.0-8.5, and continuously preserving heat for 20 min;

step 6, discharging liquor after the soda treatment is finished, washing the liquor for 2 times by hot water at 70 ℃, adding 0.5 percent (owf) of acetic acid (98 percent) to adjust the pH value to 5.0-6.0, and treating the liquor for 10min at 40 ℃;

and 7, taking out the wool, dehydrating and drying.

Example 6

Step 1, preparing a cationized peregal O-10 solution, which is specifically implemented according to the following steps:

step 1.1, mixing 17.0 percent of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (with the content of 70 percent), 3.0 percent of sodium hydroxide and 38 percent of water in a stirring device by mass percent, reacting for 30min at room temperature, and removing hydrochloric acid to obtain a 2, 3-epoxypropyl trimethyl ammonium chloride solution.

Step 1.2, adding peregal O-10 into the 2, 3-epoxypropyl trimethyl ammonium chloride solution obtained in the step 1.2, heating to 80-95 ℃, carrying out heat preservation reaction for 60min, and adding organic acid to adjust the pH value to 6-8, so as to obtain a cationized peregal O-10 solution with the content of 50%.

Step 2, adding peregal O-20 into the cationized peregal O-10 solution obtained in the step 1, and mixing to prepare the low-temperature dyeing auxiliary agent, wherein the preparation method is implemented according to the following steps:

step 2.1, weighing the following materials in percentage by mass: 20.0 percent of cationized peregal O-10 solution, 70.0 percent of peregal O-2010.0 percent of water, and the sum of the contents of the components is 100 percent.

And 2.2, adding the water weighed in the step 2.1 into the cationized peregal O-10 solution for dilution, heating to 50 ℃, adding peregal O-20, and fully stirring for dissolving to obtain the low-temperature dyeing auxiliary agent.

The method for dyeing the wool of the cashmere fiber Lanasol at the low temperature by using the low-temperature dyeing auxiliary agent comprises the following process steps:

step 1, material melting: the low-temperature dyeing auxiliary agent is mixed according to the mass ratio of 1: 4; acetic acid (98%) is diluted according to the mass ratio of 1: 10; the active dye for the Lanasol wool is fully dissolved by warm water at the temperature of 40-60 ℃;

step 2, weighing down and wetting: accurately weighing cashmere fibers, adding the cashmere fibers into a main cylinder of a dyeing machine in a loose fiber form, sealing a cylinder cover of the main cylinder, introducing soft water according to a bath ratio of 15:1, and starting a main pump of the dyeing machine to circulate for 20 min;

step 3, material conveying: 2.5 percent (owf) of low-temperature dyeing auxiliary agent is used, the materials are melted according to the step 1 and then are transmitted into a main cylinder of the dyeing machine, and the circulation is carried out for 10 min; weighing 2.2% (owf) of acetic acid (98%) according to the step 1, diluting, transferring into a main cylinder of a dyeing machine, and circulating for 10 min; weighing Lanasol yellow 4G 2.2% (owf) and Lanasol blue 3G 2.0% (owf), melting according to step 1, and transferring into a main cylinder of a dyeing machine;

step 4, dyeing: after the auxiliary agent and the dye are added into a main cylinder of the dyeing machine, starting a dyeing process, wherein the specific dyeing process is as follows: heating to 90 deg.C at 1 deg.C/min, and maintaining for 60 min;

and step 5, post-treatment: after dyeing is finished, cooling to 80 ℃ through heat exchange, adding 6.0 percent of soda ash (owf), diluting soda ash powder with soft water, transferring the diluted soda ash powder into a main cylinder of a dyeing machine, adjusting the pH value to 8.0-8.5, and continuously preserving heat for 20 min;

step 6, discharging liquor after the soda treatment is finished, performing hot washing for 3 times at 70 ℃, adding 0.75 percent (owf) of acetic acid (98 percent) to adjust the pH value to 5.0-6.0, and treating for 10min at 40 ℃;

and 7, taking out the cashmere fibers, and dehydrating and drying the cashmere fibers.