Moisture-absorbing and quick-drying finishing agent copolymer for nylon and blended fabric thereof as well as preparation method and application thereof

Abstract

The invention provides a moisture-absorbing and quick-drying finishing agent copolymer for nylon and blended fabric thereof as well as a preparation method and application of the moisture-absorbing and quick-drying finishing agent copolymer. The finishing agent copolymer comprises the following copolymerization units: 1) 35-65 wt% of an isocyanate modified (meth) acrylate copolymerization unit; the moisture-absorbing and quick-drying finishing agent for the nylon and the blended fabric of the nylon has the advantages that the stability of a copolymer is good, and the nylon and the blended fabric of the nylon treated by the moisture-absorbing and quick-drying finishing agent are good in hydrophilicity, excellent in moisture-absorbing and quick-drying performance and good in washability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of textile auxiliaries, in particular to a nylon and blended fabric moisture absorption and quick-drying finishing agent copolymer, a preparation method and application thereof. BACKGROUND

[0002] With the development of the times and the progress of technology, nylon occupies an increasingly important market position in synthetic fibers, and has become the world's second synthetic fiber after polyester. In order to meet the diversified needs of the market, there are various types of nylon fabrics on the market at present, such as nylon knitted fabrics, nylon and spandex blended fabrics, etc. Although there are a small amount of amide groups in nylon fabrics, they are shielded due to high crystallinity. Therefore, nylon fibers still have problems such as poor hydrophilicity, poor moisture absorption, and difficulty in perspiration discharge when worn, which will affect the comfort of nylon fabric wear. In order to solve this problem, the nylon fabric needs to be moisture absorption and quick-drying finished. According to a certain process, the fabric is finished by a moisture absorption and quick-drying finishing agent, and the fabric can obtain the characteristics of water absorption, moisture permeability and quick-drying.

[0003] The common moisture absorption and quick-drying finishing agent on the market at present is mainly polyester-polyether block copolymer, which is mainly used for moisture absorption and quick-drying finishing of polyester fabric. When used for nylon and blended fabric, the initial hydrophilicity can reach level, but with the increase of washing times, the hydrophilicity decreases, and after washing for 5 times, it is insufficient level, and has no quick-drying property, that is, this type of moisture absorption and quick-drying finishing agent is not suitable for nylon and blended fabric. The only small amount of moisture absorption and quick-drying finishing agent for nylon and blended fabric on the market has very good initial moisture absorption and quick-drying effect, which can reach level, but after multiple washing, the hydrophilicity and quick-drying property decrease greatly, which is insufficient level.

[0004] Therefore, it has broad market prospects and practical significance to invent a moisture absorption and quick-drying finishing agent for nylon and blended fabric with excellent washing resistance. SUMMARY

[0005] The purpose of the present application is to provide a moisture absorption and quick-drying finishing agent copolymer for nylon and blended fabric, a preparation method and application thereof. The moisture absorption and quick-drying finishing agent copolymer has good stability, the nylon and blended fabric treated by the moisture absorption and quick-drying finishing agent has good hydrophilicity, has moisture absorption and quick-drying effect, and has excellent washing resistance.

[0006] One aspect of the present application is to provide a moisture absorption and quick-drying finishing agent copolymer for nylon and blended fabric, which comprises the following copolymer units:

[0007] 1) 35-65% by weight of isocyanate-modified (meth) acrylate copolymer unit;

[0008] 2) 30-60% by weight of polyethylene glycol monoallyl ether copolymer units;

[0009] 3) 1-10% by weight of unsaturated urea-based copolymer units.

[0010] Another aspect of the present application is to provide a preparation method of the above-mentioned nylon and blended fabric moisture-wicking finishing agent copolymer, which comprises the following steps:

[0011] 1) preparing isocyanate-modified (meth)acrylate copolymer units;

[0012] 2) adding polyethylene glycol monoallyl ether copolymer units, unsaturated urea-based copolymer units, nonionic emulsifier, cationic emulsifier and water into 1) to obtain a pre-emulsion;

[0013] 3) taking 1 / 3 mass of the pre-emulsion, heating to 65-85°C, and adding 1 / 3 mass of initiator dropwise, keeping the temperature unchanged during the dropwise addition, and keeping for 1-3 hours after the dropwise addition is completed;

[0014] 4) simultaneously adding the remaining 2 / 3 mass of the pre-emulsion and the remaining 2 / 3 mass of the initiator, keeping the temperature unchanged, and the dropwise addition time is 1-3 hours;

[0015] 5) keeping for 1-3 hours after the dropwise addition is completed, cooling to room temperature, and collecting the product.

[0016] Still another aspect of the present application is to provide the use of the above-mentioned nylon and blended fabric moisture-wicking finishing agent copolymer in the moisture-wicking finishing of nylon and blended fabrics.

[0017] The nylon and blended fabric moisture-wicking finishing agent copolymer of the present application has good stability, the nylon and blended fabric treated by the copolymer has good hydrophilicity, has moisture-wicking effect, and has excellent washing resistance. DETAILED DESCRIPTION

[0018] The present application will be further described in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present application and are not used to limit the scope of the present application.

[0019] In the present application, "(meth)acrylic acid" refers to at least one of "acrylic acid" and "methacrylic acid". "(Meth)acrylate" has the same meaning.

[0020] In the present application, "EO" represents an oxyethylene structural unit.

[0021] In a preferred embodiment, the nylon and blended fabric moisture-wicking finishing agent copolymer of the present application comprises the following copolymer units:

[0022] 1) 40-60 wt% isocyanate-modified (meth)acrylate copolymerized units;

[0023] 2) 35-55 wt% polyethylene glycol monoallyl ether copolymerized units;

[0024] 3) 2-6 wt% unsaturated urea-based copolymerized units.

[0025] In a more preferred embodiment, the isocyanate-modified (meth)acrylate is a monomer formed by reacting biuret of hexamethylene diisocyanate with an alkyl diol and then with hydroxyethyl (meth)acrylate.

[0026] In a more preferred embodiment, the isocyanate-modified (meth)acrylate is prepared by reacting biuret of hexamethylene diisocyanate with an alkyl diol at 70-90°C for 1-3h, then adding dropwise hydroxyethyl (meth)acrylate, and incubating for 1-3h to obtain the isocyanate-modified (meth)acrylate. The molar ratio of the raw materials is preferably biuret of hexamethylene diisocyanate: alkyl diol: hydroxyethyl (meth)acrylate = 3:2:0.95-1.15.

[0027] In a more preferred embodiment, the alkyl diol has the following structure:

[0028]

[0029] wherein n = 1-10, preferably 2-8.

[0030] In a more preferred embodiment, the polyethylene glycol monoallyl ether has a molecular weight of 400-3000.

[0031] In a more preferred embodiment, the unsaturated urea-based copolymerized units include, but are not limited to, 2-methyl-2-propenoic acid-2-(2-oxo-1-imidazolinyl)ethyl ester, 2-methyl-N-[2-(2-oxo-1-imidazolinyl)ethyl]-2-propenamide, and one or a mixture thereof can be used.

[0032] In a more preferred embodiment, the method for preparing the moisture-wicking and quick-drying finishing copolymer of the nylon and blended fabric of the present application comprises the following steps:

[0033] 1) preparing isocyanate-modified (meth)acrylate copolymerized units;

[0034] 2) adding polyethylene glycol monoallyl ether copolymerized units, unsaturated urea-based copolymerized units, nonionic emulsifier, cationic emulsifier, and water to 1) and high-speed shearing to obtain a pre-emulsion;

[0035] 3) Take 1 / 3 mass of the pre-emulsion, heat to 65-85℃, add 1 / 3 mass of the initiator dropwise, keep the temperature unchanged during the dropwise addition, after the dropwise addition, keep for 1-3h;

[0036] 4) Add the remaining 2 / 3 mass of the pre-emulsion and the remaining 2 / 3 mass of the initiator dropwise at the same time, keep the temperature unchanged, the dropwise addition time is 1-3h;

[0037] 5) After the dropwise addition, keep for 1-3h, reduce to room temperature, collect the product.

[0038] In a more preferred embodiment, the non-ionic emulsifier is C16-C18 fatty alcohol polyoxyethylene ether (EO number 2-25), isomeric decanol polyoxyethylene ether (EO number 3-15), isomeric tridecanol polyoxyethylene ether (EO number 3-15), or a mixture thereof; the cationic emulsifier is C12-C18 alkyl trimethyl ammonium chloride, C12-C18 alkyl trimethyl ammonium bromide, or a mixture thereof.

[0039] In a more preferred embodiment, the initiator is an azo initiator, such as azobisdimethylamidino hydrochloride.

[0040] The nylon and the blended fabric prepared by the application have good stability of the moisture absorption and quick-drying finishing agent copolymer, the nylon fabric treated by the finishing agent has good hydrophilicity, has the effect of moisture absorption and quick-drying, and has excellent washing resistance.

[0041] Examples

[0042] The application will be further described in conjunction with specific examples. It should be understood that these examples are only used to illustrate the application and not used to limit the scope of the application. In addition, it should be understood that after reading the content taught by the application, those skilled in the art can make various modifications or changes to the application, and these equivalent forms also fall within the scope defined by the appended claims.

[0043] In each example, all raw materials and fabrics are commercially available.

[0044] The performance measurement and application effect in each example are measured and evaluated according to the following method:

[0045] 1. Storage stability

[0046] After 6 months of storage at room temperature, observe whether there is stratification or precipitation.

[0047] 2. Fabric treatment process

[0048] Auxiliary 4% (to the weight of the fabric); pH 5.0; bath ratio 1:10

[0049] Process: 98℃×60min→washing, dewatering, drying

[0050] 3. Determination and evaluation of moisture absorption and quick-drying performance

[0051] According to GBT 21655.1-2023, the evaluation of moisture absorption and quick-drying performance is shown in Table 1 below:

[0052] Table 1

[0053]

[0054] Washing method: according to AATCC 135.

[0055] Example 1

[0056] Put 3.1 g of ethylene glycol in a dry and clean 500 ml four-necked flask, add 35.85 g of hexamethylene diisocyanate biuret and 3 drops of dibutyltin dilaurate under nitrogen protection, heat to 90°C, and keep the reaction for 2 h. During the reaction, a small amount of acetone is used to adjust the viscosity of the system. Then, add 3.2 g of hydroxyethyl acrylate and 1 drop of dibutyltin dilaurate, keep the reaction for 2 h, and adjust the viscosity of the system with acetone during the reaction. Cool to 40-45°C and neutralize to neutral with triethylamine for 1 h, and then cool to room temperature. Then, add 30 g of polyethylene glycol monoallyl ether (molecular weight 2400) and 2.85 g of 2-methyl-2-propenoic acid-2-(2-oxo-1-imidazolinyl) ethyl ester.

[0057] Take another beaker, add 2.5 g of isomeric tridecanol polyoxyethylene ether (EO number 9), 3.5 g of cetyltrimethylammonium chloride, and 205 g of water, heat to 70°C to dissolve, then add to the four-necked flask in the above step, and high-speed shear for 1 h to obtain pre-emulsion 1.

[0058] Take 1 / 3 of the mass of pre-emulsion 1 and heat to 72°C, then add 2.5 g of 10 mass% azobisdimethylcyanobutane hydrochloride initiator, keep the temperature at 72°C, and react for 2 h. Then, add the remaining 2 / 3 mass of pre-emulsion 1 and 5 g of 10 mass% azobisdimethylcyanobutane hydrochloride initiator, and keep the temperature unchanged during the 2 h dropwise addition. After the dropwise addition is completed, continue to keep the temperature for 2 h, and then cool to room temperature to obtain moisture absorption and quick-drying finishing agent 1.

[0059] Example 2

[0060] Put 2.36g hexanediol in a dry and clean 300ml four-necked flask, under the protection of nitrogen, add 14.34g hexylene diisocyanate biuret and 2 drops of dibutyltin dilaurate, heat to 90°C, keep the temperature for 1.5h, adjust the viscosity of the system with a small amount of acetone during the reaction; then add 1.28g hydroxyethyl acrylate and 1 drop of dibutyltin dilaurate, keep the temperature for 1.5h, adjust the viscosity of the system with acetone during the reaction, cool to 40-45°C and neutralize to neutral with triethylamine, react for 1h, and cool to room temperature. Then, add 23.42g polyethylene glycol monomethallyl ether (molecular weight 800) and 1.2g 2-methyl-2-propenoic acid-2-(2-oxo-1-imidazolinyl) ethyl ester, 1.4g 2-methyl-N-[2-(2-oxo-1-imidazolinyl) ethyl]-2-propenamide.

[0061] Take another beaker, add 1.7g C16-C18 fatty alcohol polyoxyethylene ether (EO number 15), 1.8g octadecyltrimethylammonium chloride and 90g water, heat to 70°C to dissolve, then add the four-necked flask in the above step, high-speed shear for 1h, get pre-emulsion 2.

[0062] Take 1 / 3 mass of pre-emulsion 2 and heat to 74°C, add 1.48g 10 mass% azobisdimethylamide hydrochloride initiator, keep the temperature at 74°C, react for 1h, then add the remaining 2 / 3 mass of pre-emulsion 2 and 2.96g 10 mass% azobisdimethylamide hydrochloride initiator, the dropwise addition time is 1h, the temperature is kept constant during the dropwise addition, after the dropwise addition is completed, continue to keep the temperature for 3h, and cool to room temperature, get the moisture absorption and quick drying finishing agent 2.

[0063] Example 3

[0064] Put 7.3g octanediol in a dry and clean 500ml four-necked flask, under the protection of nitrogen, add 35.85g hexylene diisocyanate biuret and 3 drops of dibutyltin dilaurate, heat to 90°C, keep the temperature for 2h, adjust the viscosity of the system with a small amount of acetone during the reaction; then add 3.6g hydroxyethyl methacrylate and 1 drop of dibutyltin dilaurate, keep the temperature for 2h, adjust the viscosity of the system with acetone during the reaction, cool to 40-45°C and neutralize to neutral with triethylamine, react for 1h, and cool to room temperature. Then, add 50.8g polyethylene glycol monomethallyl ether (molecular weight 1000) and 2.85g 2-methyl-N-[2-(2-oxo-1-imidazolinyl) ethyl]-2-propenamide.

[0065] Take another beaker, add 4g isomeric decanol polyoxyethylene ether (EO number 8), 4g hexadecyltrimethylammonium bromide and 210g water, heat to 70°C to dissolve, then add the four-necked flask in the above step, high-speed shear for 2h, get pre-emulsion 3.

[0066] Take 1 / 3 mass of pre-emulsion 3 to 74℃, add 3.3g 10 mass% of azobisisobutyronitrile hydrochloride initiator, keep 74℃, react 2.5h, then add the remaining 2 / 3 mass of pre-emulsion 2 and 6.6g 10 mass% of azobisisobutyronitrile hydrochloride initiator, dropwise add time is 2.5h, keep temperature unchanged during dropwise adding, after dropwise adding, keep 2h, then reduce to room temperature, get moisture absorption and quick dry finishing agent 3.

[0067] Table 2 Storage stability evaluation

[0068]

[0069] The moisture absorption and quick dry performance and washing resistance of each embodiment and the commercially available moisture absorption and quick dry finishing agent (commercially available sample) are shown in Table 3 and Table 4. The blank sample is a fabric sample without moisture absorption and quick dry finishing agent treatment.

[0070] Table 3 Moisture absorption and quick dry performance and washing resistance comparison in nylon and polyester blended woven fabric

[0071]

[0072] Table 4 Moisture absorption and quick dry performance and washing resistance comparison in nylon knitted fabric

[0073]

[0074] From the data in Table 2, Table 3 and Table 4, it can be seen that the moisture absorption and quick dry finishing agent copolymer of the nylon and its blended fabric of the present application has good stability, the nylon knitted fabric and the nylon and polyester blended woven fabric after finishing have good hydrophilic and moisture absorption and quick dry effect after 20 times of home washing, and have good washing resistance and durability.

Claims

1. A copolymer of nylon and its blended fabrics with a moisture-wicking and quick-drying finishing agent, comprising the following copolymer units: 1) 35-65% by weight isocyanate-modified (meth)acrylate copolymer units; 2) 30-60% by weight of polyethylene glycol monoallyl ether copolymer units; 3) 1-10% by weight of unsaturated urea copolymer units.

2. The nylon and its blended fabric moisture-wicking and quick-drying copolymer as described in claim 1, characterized in that, Includes the following copolymer units: 1) 40-60% by weight of isocyanate-modified (meth)acrylate copolymer units; 2) 35-55% by weight of polyethylene glycol monoallyl ether copolymer units; 3) 2-6% by weight of unsaturated urea copolymer units.

3. The nylon and its blended fabric moisture-wicking and quick-drying copolymer as described in claim 1 or 2, characterized in that, The isocyanate-modified (meth)acrylate is a monomer formed by reacting hexamethylene diisocyanate biuret with an alkyl diol and then with hydroxyethyl (meth)acrylate.

4. The nylon and its blended fabric moisture-wicking and quick-drying copolymer as described in claim 3, wherein the structure of the alkyl diol is as follows: in, n=1-10。 5. The nylon and its blended fabric moisture-wicking and quick-drying copolymer as described in claim 1 or 2, characterized in that, The molecular weight of the polyethylene glycol monoallyl ether is 400-3000.

6. The nylon and its blended fabric moisture-wicking and quick-drying copolymer as described in claim 1 or 2, characterized in that, The unsaturated urea copolymer unit includes at least one of 2-methyl-2-acrylate-2-(2-oxo-1-imidazolinyl)ethyl ester and 2-methyl-N-[2-(2-oxo-1-imidazolidinyl)ethyl]-2-acrylamide.

7. A method for preparing the nylon and its blended fabric moisture-wicking and quick-drying copolymer according to any one of claims 1-6, the method comprising the following steps: 1) Preparation of isocyanate-modified (meth)acrylate copolymer units; 2) Add polyethylene glycol monoallyl ether copolymer units, unsaturated urea copolymer units, nonionic emulsifiers, cationic emulsifiers, and water to 1) to prepare a pre-emulsion; 3) Take 1 / 3 of the pre-emulsion by mass, heat it to 65-85℃, add 1 / 3 of the initiator by mass dropwise, keep the temperature constant during the dropwise addition, and keep warm for 1-3 hours after the dropwise addition is completed; 4) Add the remaining 2 / 3 of the preemulsion and the remaining 2 / 3 of the initiator dropwise simultaneously, keeping the temperature constant, for 1-3 hours; 5) After the dripping is finished, keep warm for 1-3 hours, cool to room temperature, and collect the material.

8. The preparation method according to claim 7, characterized in that, The nonionic emulsifier is a C16-C18 fatty alcohol polyoxyethylene ether with an EO number of 2-25, an isomeric decayl alcohol polyoxyethylene ether with an EO number of 3-15, an isomeric tridecyl alcohol polyoxyethylene ether with an EO number of 3-15, or a mixture thereof; the cationic emulsifier is a C12-C18 alkyltrimethylammonium chloride, a C12-C18 alkyltrimethylammonium bromide, or a mixture thereof.

9. The preparation method according to claim 7, characterized in that, The initiator is an azo initiator.

10. The use of any one of the nylon and blended fabric moisture-wicking quick-drying finishing agent copolymers according to claims 1-6 in the moisture-wicking quick-drying finishing of nylon and blended fabrics.

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