KR970010722B1 - Process for preparing antistatic polyester fiber - Google Patents

Abstract

A composition is composed of an alkylsulofonic acid metal salt and a copolymerization ingredient which contains polyoxyalkyleneglycol or polyalkyleneteramine structure. The compound of formula(1) is put in the composition to obtain the polyester antistatic yarn by a coploymerization. The compound of formula(1) contains more than 2 arylsulfonic acid metal salt and R1 is a reactive radical which contains more than 2 C13-C30 aryl group and M is Li, K, Na.

Description

Manufacturing method of polyester maker

The present invention relates to an improved manufacturing method of a polyester electrostatic yarn having excellent antistatic performance but not losing the advantages of ordinary polyester fibers.

Polyester fiber is attracting much attention for clothing because it has excellent properties such as heat resistance, chemical resistance, elongation, crystallinity, and flexural strength, but in low temperature and low humidity areas, it is lining, lingerie, foundation, and other dust-free clothing in winter. In order to use it as a special functional clothing such as sportswear, there is a problem in that dust is easily adsorbed and contaminated by the generation of static electricity due to friction, and shock or discomfort to the wearer is caused. As a method for solving the electrostatic problem, when polyoxyalkylene glycol is block copolymerized, polyalkylene etheramide made of polyamide block copolymer by modifying the sock end of polyalkylene glycol with a carboxyl group or an amine group is used as an antistatic agent. Techniques are proposed in Japanese Patent Publications Nos. 44-16178 and 44-7713, and techniques for dispersing block polyalkyleneamides in polyester are disclosed in Japanese Patent Publications Nos. 48-10380 and 50-107206. Techniques using polyalkylene etheramides and organic electrolytes have been introduced in US 45-17547.

However, these methods have a disadvantage in that it is difficult to obtain a sufficient degree of polymerization by conventional melt polymerization. On the other hand, Japanese Patent Laid-Open Publication Nos. 52-66236 and 52-131443, which use polyester alkali metal salts in combination, have disadvantages of insufficient antistatic performance and poor antistatic performance after dyeing or washing.

The present invention solves this problem and will be described in more detail as follows.

The present invention relates to a method for producing a polyester electrostatic yarn that adds a copolymerization component to polyester to impart antistaticity, to a component having a polyoxyalkylene glycol or polyalkylene etheramine structure and an alkyl sulfonate metal salt as a copolymerization component. The present invention relates to a method for producing a polyester electrostatic yarn, characterized in that the compound of formula (1) is added together and copolymerized.

(In the above formula, R ₁ is a reactor having two or more aryl groups having _{13 to 30} carbon atoms, M is Li, K, Na)

Conventionally, a method of copolymerizing a component having a polyoxyalkylene glycol or polyalkylene etheramine structure with an alkylsulfonic acid metal salt as shown in the following general formula (2) as a copolymerization component for imparting antistatic properties is mainly copolymerized. Has been used.

(In the above formula, R ₂ is an alkyl group having _{3 to 30} carbon atoms or an aryl group having ₇ to ₃₀ carbon atoms, M is Li, K, Na)

However, the present inventors have studied for a long time to improve the antistatic property, and as a result, the use of the compound of the general formula (1) having a bulkier structure than the alkyl sulfonate salt having a relatively linear structure (LINEAR) together to improve the antistatic properties It has been found to be quite advantageous and has led to the invention. The compound of the general formula (1) used in the present invention is an aryl sulfonic acid metal salt characterized by having two or more aryl groups, for example, 4-sulfo-1, 8-naphthalic anhydride potassium salt, 3, 6- Bis (2-sulfophenylazo) -4, 5-dihydroxy-2, 7-naphthalene disulfonic acid, 2- (4-sulfophenylazo) -1, 8-dihydroxy-3, 6-naphthalene disulfide Phonic acid trisodium salt, etc. can be mentioned.

In the present invention, the use ratio of the compound of formula (1) and the alkyl sulfonate of formula (2) is 1: 1 to 1: 20, but the content of the two compounds is added to 0.01 to 2% by weight relative to the final polyester. If the added amount is less than 0.01% by weight, the viscosity of the polymer is low, and if it is more than 2% by weight, the viscosity of the polymer is too high, which causes metal salts to accumulate in the nozzle during spinning, resulting in poor spinning.

In addition, in this invention, the compound of following General formula (3) is used as a compound which has the said polyalkylene ether amine structure.

(Wherein R ₃ is an alkyl group having _{1 to 13} carbon atoms or H, R ₄ is an alkylene group having _{2 to 16} carbon atoms, R 5 is H or NH ₂ , and n is an integer of 20 to 150)

In the present invention, the amount of polyoxyalkylene glycol or compound (3) added is preferably 0.01 to 2% by weight. If the amount is less than 0.01% by weight, the effect of improving the antistatic property is insignificant. This is undesirable because it causes a problem of deterioration. In the present invention, it is possible to generally use a catalyst used for the polymerization of polyester, and to improve thermal stability by using a phosphorus compound.

The antistatic copolymer of the present invention thus obtained can be subjected to polymerization in a conventional manner and can be radially stretched according to a conventional method to produce an antistatic stretched yarn. Thus, the polyester antistatic yarn obtained according to the present invention is excellent in antistatic performance without inhibiting the inherent physical properties of the polyester fiber can be widely used in clothing and functional clothing.

An Example is given to the following and this invention is further demonstrated to it.

(Example)

How to measure

(1) Resistivity: Measured by using electric resistance meter of TOA of Japan in constant temperature and humidity room.

(2) Friction band voltage, half-life: Measured using a Kanebo friction belt voltage meter.

* The specific resistance, friction voltage, and half-life were measured at 20 ± 2 ℃ and 40 ± 2RH% humidity.

(Example 1)

While maintaining a polymerization tank containing 10 kg of polyethylene terephthalate oligomer at 260 ° C., a slurry in which 8645 g of terephthalic acid and 3875 g of ethylene glycol were well mixed was added over 6 hours to prepare 20 kg of oligomi and 10 kg was transferred to another polymerization tank. To this oligomer is a compound of antimony triline 58 with compound C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₄₀ H 100 g of general formula (2) 50 g of Compound 3, 6-bis (2-sulfophenylazo) -4, 5-dihydroxy-2, 7-naphthalene disulfonic acid 10 g of General Formula (1) was added thereto, followed by sufficient reaction at 280 ° C. To prepare a polyester of the present invention. The obtained polymer was dried in a conventional manner, and spun at 295 ° C. at a rate of 1 000 m / min using a mold having 36 circular reflecting holes having a diameter of 0.25 mm. The drawn undrawn yarn was drawn at a drawing speed of 1070 m / min by a heating roller maintained at 80 ° C. and a hot plate maintained at 120 ° C. to produce a drawn yarn of 75 d / f. The physical properties of the woven fabric before and after washing are measured and shown in Table-1.

(Examples 2-9 and Comparative Examples 1-7)

As shown in Table 1, Examples 2 to 5 and Comparative Examples 1 to 4 use the same compounds as in Example 1, except that only the content is changed therebetween, and Examples 6 to 7 are compounds of the general formula (1). 4-sulfo-1,8-naphthalic anhydride potassium salt was used and Examples 8-9 used 2- (4-sulfophenylazo) -1, 8-dihydroxy-3, 6-naphthalene disulfonic The same procedure as in Example 1 was conducted except that the acid trisodium salt was used. 5-7 is the thing which does not use the compound of General formula (1).

TABLE 1

Claims (3)

In the manufacturing method of the polyester electrostatic yarn which adds a copolymerization component to a polyester and adds antistatic property, it carries out polyoxyalkylene glycol or polyalkylene ether aman and alkyl sulfonic acid metal salt as a copolymerization component as following General formula (1) A method for producing a polyester woven yarn, characterized in that the copolymerization is carried out using the addition of the compound. (Wherein, R ₁ is a reactor having two or more aryl groups of C _{13 ~} C ₃₀ , M is Li, K, Na) According to claim 1, wherein the compound of formula (1) is 4-sulfo-1, 8- naphthalic anhydride potassium sulphate, 3, 6-bis (2-sulfophenylazo) -4, 5-di At least one selected from the group consisting of HydroSpecy-2, 7-naphthalenedisulfonic acid, 2- (4-sulfophenylazo) -1, 8-dihydroxy-3, and 6-naphthalene disulfonic acid trisodium salt, The ratio of the compound of (1) to the alkylsulfonate salt is 1: 1 to 20, wherein the total amount of the two compounds is added at 0.01 to 2% by weight based on the final polyester. . The method according to claim 1, wherein the polyoxyalkylene glycol uses at least one selected from compounds of the following general formula (3). (In the above formula, R ₃ is C ₁ -C ₁₃ alkyl group or H, R ₄ is C | ₂ -C ₁₆ alkylene group, R ₅ is H or NH ₂ , n is an integer of 20 to 150).