TW201623561A - Cross-linking agent for preparing water repellent yarn and weave and processing method with the same - Google Patents

Abstract

A cross-linking agent for preparing water repellent wool yarn and weave and processing methods with the sameare provided. The cross-linking agent includes a compound represented by the following formula (1), R-(Z)m formula (1) Wherein R is a residue obtained by removing m isocyanate groups from a polyisocyanate compound having m isocyanate groups; m is an integer of 2 to 10; Zs are the same or different from each other and Z is represented by the following formula (2), in the formula (2), R1 is C1-C6 alkyl group, C2-C6 alkenyl group, C7-C12 arylalkyl group, N-carbamoyl group, phenyl group, nitro group, halogen atom or -COO-R2, R2 is hydrogen atom or C1-C6 alkyl group; n is an integer of 0 to 3, and R1s are the same or different from each other when n is 2 or 3.

Description

Bridge agent for yarn and textile water repellent processing and processing method using same

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method of processing yarns and textiles, and more particularly to a bridging agent for yarns and textiles having a water repellency and a method of processing yarns and textiles.

Under the trend of globalization, the textile industry is facing strong competitive pressures. Textile companies must constantly develop new technologies and diversified products in order to face the competition in the world. In order to meet the diverse needs of consumers, there are a variety of versatile fabric products on the market, such as waterproof fabrics, thermal insulation fabrics or electric heating fabrics. Existing waterproof fabrics are typically processed after the yarn is made into a textile to impart a water dispenser function to the textile.

However, in the current technology, the drying temperature during processing tends to be above 150 °C. When the raw materials of the textile are natural fibers (such as wool, silk, etc.), too high a temperature tends to cause dimensional shrinkage and yellowing of the textile, thereby causing Poor quality.

The present invention provides a bridging agent that allows the yarn to be subjected to water repellency processing at a lower temperature.

The present invention provides a method of processing a yarn which allows the yarn to have water repellency.

The invention provides a method for processing textiles, which can make the textiles have water repellency.

The bridging agent of the present invention is suitable for water repellent treatment of yarns or textiles. The bridging agent includes a compound represented by the following formula (1), R-(Z) _m formula (1)

Wherein R represents a residue obtained by removing m isocyanate groups from a polyisocyanate compound having m isocyanate groups; m is an integer of 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2),

In the formula (2), R ¹ is a C1-C6 alkyl group, a C2-C6 alkenyl group, a C7-C12 aralkyl group, an N-substituted amine carbenyl group, a phenyl group, a nitro group, a halogen atom or a -COO-R. ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer of 0 to 3, and when n is 2 or 3, R ¹ are the same or different from each other.

According to the bridging agent of the embodiment of the invention, the above m is, for example, an integer of 2 to 6.

According to the bridging agent of the embodiment of the present invention, the above R is, for example, an aliphatic group, a cycloaliphatic group, a heterocyclic group or an aromatic group and includes at least three consecutive ethoxy groups or at least An m-valent group of a residue of a polyhydroxycarboxylic acid.

The yarn processing method of the present invention first provides a yarn made of natural fibers. Then, the yarn is immersed in a treatment solution, wherein the treatment solution contains 8 wt% to 20 wt% of a water repellent, 0.8 wt% to 2 wt% of a bridging agent, and the balance, based on the total weight of the treatment solution. An amount of water, and the bridging agent includes a compound represented by the following formula (1), R-(Z) _m formula (1)

Wherein R represents a residue obtained by removing m isocyanate groups from a polyisocyanate compound having m isocyanate groups; m is an integer of 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2),

In the formula (2), R ¹ is a C1-C6 alkyl group, a C2-C6 alkenyl group, a C7-C12 aralkyl group, an N-substituted amine carbenyl group, a phenyl group, a nitro group, a halogen atom or a -COO-R. ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer of 0 to 3, and when n is 2 or 3, R ¹ are the same or different from each other. Thereafter, the soaked yarn is subjected to a drying treatment, and the temperature of the drying treatment is between 90 ° C and 110 ° C.

According to the method of processing a yarn according to an embodiment of the present invention, the above m is, for example, an integer of 2 to 6.

The method for processing a yarn according to an embodiment of the present invention, the above R example The m-valent group is a residue including an aliphatic group, a cycloaliphatic group, a heterocyclic group or an aromatic group and comprising at least three consecutive ethoxylated or at least one polyhydroxycarboxylic acid.

According to the method of processing a yarn according to an embodiment of the present invention, the natural fiber is, for example, wool or silk.

According to the method of processing a yarn according to an embodiment of the present invention, the yarn is immersed in the treatment solution at a temperature of, for example, 10 ° C to 50 ° C.

According to the method for processing a yarn according to an embodiment of the present invention, the yarn is further subjected to a dyeing process before the yarn is immersed in the treated solution.

The method of processing the textile of the present invention is to first provide a textile made of natural fibers. Next, the textile is immersed in a treatment solution, wherein the treatment solution contains 8 wt% to 20 wt% of a water repellent, 0.8 wt% to 2 wt% of a bridging agent, and the balance, based on the total weight of the treatment solution. Water, and the bridging agent includes a compound represented by the following formula (1), R-(Z) _m formula (1)

Wherein R represents a residue obtained by removing m isocyanate groups from a polyisocyanate compound having m isocyanate groups; m is an integer of 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2),

In the formula (2), R ¹ is a C1-C6 alkyl group, a C2-C6 alkenyl group, a C7-C12 aralkyl group, an N-substituted amine carbenyl group, a phenyl group, a nitro group, a halogen atom or a -COO-R. ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer of 0 to 3, and when n is 2 or 3, R ¹ are the same or different from each other. Thereafter, the immersed textile is subjected to a drying setting process at a temperature between 90 ° C and 110 ° C.

According to the method of processing a textile according to an embodiment of the present invention, the above m is, for example, an integer of 2 to 6.

According to the processing method of the textile according to the embodiment of the present invention, the above R is, for example, an aliphatic group, a cycloaliphatic group, a heterocyclic group or an aromatic group and includes at least three consecutive ethoxylated groups. Or at least one m-valent group of the residue of the polyhydroxycarboxylic acid.

According to the method of processing a textile according to an embodiment of the present invention, the natural fiber is, for example, wool or silk.

According to the method of processing a textile according to an embodiment of the present invention, the textile described above is immersed in the treatment solution, for example, at a temperature of from 10 ° C to 50 ° C.

According to the method for processing a textile according to an embodiment of the present invention, before the immersing the textile in the treated solution, the dyeing and finishing treatment of the textile is further included.

Based on the above, in the processing of yarn and textile, since the water repellent is used in combination with the bridging agent water repellent of the present invention, it can be dried at a relatively low temperature (90 ° C to 110 ° C) and obtained well. Water-dispensing yarns and textiles.

In order to make the above features and advantages of the present invention more apparent, the following is a special The embodiments are described in detail below in conjunction with the drawings.

100, 102, 104, 106, 200, 202, 204, 206‧‧ steps

1 is a flow chart of a method of processing a yarn according to an embodiment of the invention.

2 is a flow chart of a method of processing a textile according to an embodiment of the invention.

The present invention provides a bridging agent suitable for water repellent treatment of yarns or textiles. In the process of water-repellent treatment of yarns or textiles, the bridging agent of the present invention is combined with a general water-repellent agent to impart water-drawing characteristics to yarns or textiles at a lower temperature, and is particularly suitable for use at high temperatures. A yarn or textile made of natural fibers that causes shrinkage, yellowing, and the like.

The bridging agent of the present invention includes a compound represented by the following formula (1), R-(Z) _m formula (1) wherein R represents a residue obtained by removing m isocyanate groups from a polyisocyanate compound having m isocyanate groups; m is an integer of 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2),

In the formula (2), R ¹ is a C1-C6 alkyl group, a C2-C6 alkenyl group, a C7-C12 aralkyl group, an N-substituted amine carbenyl group, a phenyl group, a nitro group, a halogen atom or a -COO-R. ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer of 0 to 3, and when n is 2 or 3, R ¹ are the same or different from each other. Further, the above R is, for example, a residue including an aliphatic group, a cycloaliphatic group, a heterocyclic group or an aromatic group and including at least three consecutive ethoxylated or at least one polyhydroxycarboxylic acid. M-valent group.

In detail, the bridging agent of the present invention is an isocyanate compound blocked via pyrazole, which can be stably stored at normal temperature (for example, 10 ° C to 50 ° C), and can release isocyanate after heating (for example, 90 ° C to 110 ° C). The bridging reaction is carried out by the group. In some embodiments, m is, for example, an integer from 2 to 6.

The polyisocyanate compound having m isocyanate groups may be a known polyisocyanate compound, and may, for example, be an aliphatic diisocyanate, a cycloaliphatic diisocyanate, a heterocyclic or aromatic diisocyanate or a dimer or a trimer of the above diisocyanate. Or a modified polyisocyanate compound such as a polymer. The above diisocyanate compound is, for example, hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, diphenylmethane diisocyanate or toluene diisocyanate. Further, the polyisocyanate compound may be hexamethylene diisocyanate biuret, hexamethylene diisocyanate trimer, isophorone diisocyanate trimer, toluene diisocyanate trimer, toluene diisocyanate pentamer A pentamer obtained by cyclization of a body or isophorone diisocyanate with toluene diisocyanate.

Hereinafter, an embodiment in which the water-repellent treatment of the yarn and the textile is carried out using the bridging agent of the present invention will be described.

1 is a flow of a method of processing a yarn according to an embodiment of the invention. Cheng Tu. Referring to Figure 1, first, in step 100, a yarn made of natural fibers is provided. The natural fiber is, for example, wool, silk, or the like, and its main component is protein (composed of a plurality of amino acids and containing an amine group or a carboxyl group).

Then, in step 102, the yarn is subjected to a dyeing process to impart a desired color to the yarn. The above dyeing and finishing treatment is well known to those skilled in the art and will not be described herein. In other embodiments, if it is not necessary to color the yarn, step 102 may be omitted and the following step 104 may be directly performed.

Next, in step 104, the yarn is immersed in the treatment solution. The treatment solution contains a water repellent, a bridging agent of the present invention and water. The treatment solution contains from 8 wt% to 20 wt% of the water repellent, from 0.8 wt% to 2 wt% of the bridging agent, and the balance of water, based on the total weight of the treatment solution. In this embodiment, the yarn is immersed in the treatment solution at a temperature between 10 ° C and 50 ° C. After the yarn is immersed in the treatment solution, the water repellent and the bridging agent can be attached to the yarn. In addition, the water repellent agent described above may be a commonly used water repellent agent, and the present invention is not particularly limited thereto. For example, the water repellent can be a combination of an organic hydrazine sol-gel solution system, a polyacrylate miniemulsion and an organic hydrazine sol-gel solution system, or a commercially available water repellent.

Thereafter, in step 106, the soaked yarn is subjected to a drying treatment. In the present embodiment, since the bridging agent attached to the yarn is the bridging agent of the present invention, it can be dried at a lower temperature (between 90 ° C and 110 ° C) than in the prior art, and At the same time, the bridging agent of the present invention releases an isocyanate group at this temperature to carry out a bridging reaction, so that the water repellent is firmly attached to the yarn to give the yarn a water-repellent function.

In particular, in the case where the yarn needs to be dyed and finished, the yarn is first dyed and finished, and then the yarn is immersed in the treatment solution and dried, so that the water treatment can be avoided first. The problem that the dye molecules cannot be effectively attached to the yarn during the dyeing and finishing process.

2 is a flow chart of a method of processing a textile according to an embodiment of the invention. Referring to Figure 2, first, in step 200, a textile made from natural fibers is provided. The textile is produced, for example, by first making a natural fiber into a yarn and making the yarn into a textile. The natural fiber is, for example, wool, silk, or the like, and its main component is protein (composed of a plurality of amino acids and containing an amine group or a carboxyl group).

Then, in step 202, the textile is dyed to provide the desired color of the textile. The above dyeing and finishing treatment is well known to those skilled in the art and will not be described herein. In other embodiments, if it is not necessary to color the textile, step 202 may be omitted and the following step 204 may be directly performed.

Next, in step 204, the textile is immersed in the treatment solution. The treatment solution contains a water repellent, a bridging agent of the present invention and water. The treatment solution contains from 8 wt% to 20 wt% of the water repellent, from 0.8 wt% to 2 wt% of the bridging agent, and the balance of water, based on the total weight of the treatment solution. In this embodiment, the textile is immersed in the treatment solution at a temperature between 10 ° C and 50 ° C. After the textile is immersed in the treatment solution, the water repellent and the bridging agent may be attached to the textile. In addition, the water repellent agent described above may be a commonly used water repellent agent, and the present invention is not particularly limited thereto. For example, the water repellent can be a combination of an organic hydrazine sol-gel solution system, a polyacrylate miniemulsion and an organic hydrazine sol-gel solution system, or a commercially available water repellent.

Thereafter, in step 206, the soaked textile is subjected to a drying setting process to dry the textile and prevent variations in the size of the textile. In the present embodiment, since the bridging agent attached to the textile is the bridging agent of the present invention, the drying setting treatment can be performed at a lower temperature (between 90 ° C and 110 ° C) as compared with the prior art. At the same time, the bridging agent of the present invention releases the isocyanate group at this temperature to carry out a bridging reaction, so that the water-repellent agent is firmly attached to the textile to make the textile have a water-repellent function.

In particular, in the case where the textile needs to be dyed and finished, the textile is first dyed and finished, the textile is immersed in the treatment solution and dried and shaped, so that the textile that has been water-treated first can be avoided. The problem that the dye molecules cannot be effectively attached to the textile during the dyeing and finishing process.

The manner in which the bridging agent of the present invention is synthesized and the water-capacity test of the yarn and the textile will be described below.

Synthesizing the bridging agent of the present invention

In a reaction vessel, 100 g of hexamethylene diisocyanate trimer and 18.7 g of polyethylene glycol monomethyl ether were added and heated to 90 °C. After reacting for 1 hour, the temperature was lowered to 70 ° C, 45.7 g of 3,5-dimethylpyrazole was slowly added, and the reaction was allowed to proceed until the isocyanate content was 0 by Fourier transform infrared spectroscopy. Next, the mixture was rapidly stirred in a stirrer and slowly added with water (246.6 g in total) to carry out dispersion to obtain a pyrazole-terminated isocyanate compound.

Yarn and textile processing and water dispenser assessment

Experimental example 1

First, the dyed wool yarn is immersed in a treatment solution containing a water repellent (organic sol-gel solution system) and the bridging agent of the present invention, and then the yarn is dried at a temperature of 90 ° C to obtain a dial Water functional wool yarn. The content of water repellent and bridging agent in the treatment solution and the evaluation of effectiveness are shown in Table 1.

Experimental example 2-6

The dyed wool textile is first immersed in a treatment solution containing a water repellent (organic sol-gel solution system) and the bridging agent of the present invention, and then the textile is dried to obtain a wool textile having a water repellency. The water repellent and bridging agent content, drying temperature and efficacy evaluation in the treatment solutions of the respective experimental examples are shown in Table 1.

Experimental Example 7-8

The textile was processed in the same manner as in Experimental Example 2-6 except that a commercially available fluorine-free water repellent (Rodulf, RUCO-DRY ECO) was used. The water repellent and bridging agent content, drying temperature and effectiveness evaluation in the treatment solution are shown in Table 1.

Experimental Example 9-10

The textile was processed in the same manner as in Experimental Example 2-6 except that a commercially available fluorine-based water repellent (DAIDIN, UNIDYNE TG-5543) was used. The water repellent and bridging agent content, drying temperature and effectiveness evaluation in the treatment solution are shown in Table 1.

Comparative example 1

The dyed wool textiles are directly evaluated for effectiveness without processing.

Comparative example 2

The textile was processed in the same manner as in Experimental Example 2-6 except that a commercially available bridging agent (Rodulf, RUCO-LINK RCX) was used. The water repellent and bridging agent content, drying temperature and effectiveness evaluation in the treatment solution are shown in Table 1.

Comparative example 3

The textile was processed in the same manner as in Experimental Example 2-6 except that the bridging agent was not used. The water repellent and bridging agent content, drying temperature and effectiveness evaluation in the treatment solution are shown in Table 1.

As is clear from Table 1, the experimental examples 1-10 in which the water-repellent agent was used in combination with the bridging agent of the present invention were compared with Comparative Example 1 in which the water-repellent agent and the bridging agent were not used, and Comparative Example 3 in which the bridging agent was not used. After drying at 90 ° C to 110 ° C, it has a better water repellency effect. In addition, comparison with the use of a water repellent in combination with a bridging agent other than the present invention In Comparative Example 2, Experimental Example 1-10 using a water repellent in combination with the bridging agent of the present invention had a better water repellency after drying at 90 ° C to 110 ° C.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100, 102, 104, 106 ‧ ‧ steps

Claims (15)

A bridging agent for water repellent treatment of yarns or textiles, the bridging agent comprising a compound represented by the following formula (1), R-(Z) _m formula (1) wherein R represents from having m isocyanate groups The residue obtained by removing the m isocyanate groups of the polyisocyanate compound; m is an integer of 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2), In the formula (2), R ¹ is a C1-C6 alkyl group, a C2-C6 alkenyl group, a C7-C12 aralkyl group, an N-substituted amine carbenyl group, a phenyl group, a nitro group, a halogen atom or a -COO-R. ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer of 0 to 3, and when n is 2 or 3, R ¹ are the same or different from each other. The bridging agent according to claim 1, wherein m is an integer of 2 to 6. The bridging agent of claim 1, wherein R is an aliphatic group, a cycloaliphatic group, a heterocyclic group or an aromatic group and includes at least three consecutive ethoxy groups or at least An m-valent group of a residue of a polyhydroxycarboxylic acid. A method of processing a yarn, comprising: providing a yarn made of natural fibers; immersing the yarn in a treatment solution, wherein the treatment solution contains 8 wt% to 20 wt% based on the total weight of the treatment solution % water repellent, 0.8 wt% to 2 wt% of a bridging agent, and the balance of water, and the bridging agent includes a compound represented by the following formula (1), R-(Z) _m formula (1) wherein R represents a residue obtained by removing m isocyanate groups from a polyisocyanate compound having m isocyanate groups; m is an integer of 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2), In the formula (2), R ¹ is a C1-C6 alkyl group, a C2-C6 alkenyl group, a C7-C12 aralkyl group, an N-substituted amine carbenyl group, a phenyl group, a nitro group, a halogen atom or a -COO-R. ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer of 0 to 3, and when n is 2 or 3, R ¹ are the same or different from each other; and the yarn after soaking is dried The temperature of the drying treatment is between 90 ° C and 110 ° C. The method for processing a yarn according to claim 4, wherein m is an integer of 2 to 6. The method for processing a yarn according to claim 4, wherein R is an aliphatic group, a cycloaliphatic group, a heterocyclic group or an aromatic group and includes at least three consecutive ethylene oxides. a m-valent group of a residue of at least one polyhydroxycarboxylic acid. The method of processing a yarn according to claim 4, wherein the natural fiber comprises wool or silk. The method of processing a yarn according to claim 4, wherein the yarn is immersed in the treatment solution at a temperature of from 10 ° C to 50 ° C. The method of processing a yarn according to claim 4, wherein the yarn is subjected to a dyeing treatment before being immersed in the treated solution. A method of processing a textile comprising: providing a textile made of natural fibers; immersing the textile in a treatment solution, wherein the treatment solution contains 8 wt% to 20 wt% of the total weight of the treatment solution a water agent, 0.8% by weight to 2% by weight of a bridging agent, and the balance of water, and the bridging agent includes a compound represented by the following formula (1), R-(Z) _m formula (1) wherein R represents m isocyanate group-containing polyisocyanate compound obtained by removing m isocyanate groups; m is an integer of 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2), In the formula (2), R ¹ is a C1-C6 alkyl group, a C2-C6 alkenyl group, a C7-C12 aralkyl group, an N-substituted amine carbenyl group, a phenyl group, a nitro group, a halogen atom or a -COO-R. ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer of 0 to 3, and when n is 2 or 3, R ^{1 is the} same or different from each other; and the textile after soaking is subjected to drying and setting treatment The temperature of the dry setting treatment is between 90 ° C and 110 ° C. The method of processing a textile according to claim 10, wherein m is an integer of 2 to 6. The method of processing a textile according to claim 10, wherein R is an aliphatic group, a cycloaliphatic group, a heterocyclic group or an aromatic group and includes at least three consecutive ethoxylated groups. Or at least one m-valent group of the residue of the polyhydroxycarboxylic acid. The method of processing a textile according to claim 10, wherein the natural fiber comprises wool or silk. The method of processing a textile according to claim 10, wherein the textile is immersed in the treatment solution at a temperature of from 10 ° C to 50 ° C. The method of processing a textile according to claim 10, wherein before the immersing the textile in the treated solution, the textile is further subjected to a dyeing treatment.