JPS6278265A - Treatment agent for spinning cotton yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention provides a cotton yarn spinning treatment that can be applied to cotton raw cotton with poor spinnability under normal spinning conditions to improve its spinnability. This is related to drugs.

(B) Conventional technology Cotton has the characteristics of good texture, moisture absorption, and good dyeability, and has traditionally been used most often for clothing among natural fibers. Cotton is grown in large quantities all over the world. However, during the cultivation process, some of these cotton (hereinafter referred to as raw cotton) are secreted by certain insects.
It is known that a sticky substance called honeydew, which contains a large amount of viscosity-reducing sugar, adheres to the fabric and causes various problems such as roller wrapping during the spinning process. Regarding the causes and countermeasures for the stickiness of raw cotton adhering to sticky substances (hereinafter also referred to as sticky raw cotton), please refer to Nippon Boseki Venue's "Textile Technology News" No. 521 (published in September 1980). It is discussed in detail on pages 1-6, "A Consideration on the Stickiness of Cotton." Currently, when spinning these sticky raw cottons, the following two methods are the main measures actually taken.

■ Spinning with relative humidity reduced to 55% or less.

■Mix appropriate amount into non-stick raw cotton and spin.

However, simply spinning at lower humidity is disadvantageous in terms of energy conservation, and low humidity during cotton spinning increases the generation of fluff or dust, and increases the number of yarn breakages per operation. This results in serious problems such as deterioration of the environment and the generation of static electricity. Also, mixing raw cotton with non-adhesive cotton is not an essential solution, and during long-term spinning, sticky substances accumulate in various parts of the machine, causing various troubles.

(c) Problems to be Solved by the Invention The present inventors have considered the above-mentioned points and have investigated the essential solution of reducing the stickiness of the sticky raw cotton itself. As a result, they discovered that by applying a certain treatment agent to raw cotton during cotton spinning, spinnability could be improved regardless of the type of raw cotton, the presence of honeydew, etc.
This led to the present invention.

(d) Means for solving the problem, that is, the present invention is a sucrose fatty acid ester compound (hereinafter simply referred to as a sucrose compound) represented by the following general formula (I) 80
-40% by weight of a polyethylene glycol fatty acid ester compound (hereinafter simply referred to as a glycol compound) represented by the following general formula (b) and 20-60% by weight of a cotton yarn spinning treatment agent. It is something.

General formula (I); (wherein Q, , Q, , Q3 are each I] or R, Co,
R1 represents an aliphatic hydrocarbon group having 11 to 17 carbon atoms, and Q.

, Q, , and Q3 are R and Co.

1, m, and n are each 0 or a positive integer, and l0m+n
is from 0 to 10. ) General formula (■); R, COO (C, H, O), Q, (II
) (However, it represents Qμm11 or R, CO, Ryu, R
3 each represents an aliphatic hydrocarbon group having 11 to 17 carbon atoms.

In addition, p represents an integer of 4 to 7.) The ester compound represented by the general formula (I) is a type of sucrose fatty acid ester. This ester compound is obtained by treating sucrose with a fatty acid having 12 to 18 carbon atoms to form a varnish gel. If desired, it can be obtained by adding 10 moles of ethylene oxide and then esterifying it with a fatty acid having 12 to 18 carbon atoms, or by esterifying sucrose and then adding 10 moles or less of ethylene oxide. be able to.

The fatty acid used for esterification has 12 to 18 carbon atoms.
These fatty acids are used alone or in combination. When the number of carbon atoms is less than 12, that is, when the aliphatic hydrocarbon group of R7 in general formula (I) has less than 11 carbon atoms, when it is added to raw cotton, the coefficient of friction between the constituent fibers becomes high, which causes problems during spinning. Alternatively, it may adversely affect the quality of the spun yarn, which is undesirable. In addition, when the number of carbon atoms in the fatty acid exceeds 18, that is, when the number of carbon atoms in R7 in general formula (I) exceeds 17, the compound itself becomes highly viscous, making it difficult to apply by spraying, etc., and the compound is expensive. This is not desirable. Preferred fatty acids include lauric acid, myristic acid, palmitic acid, and stearic acid among saturated fatty acids, and oleic acid among unsaturated fatty acids.

Esters are formed between at least one of the three methylols of sucrose and a fatty acid to form a monoester, and optionally between two or three methylols to form a diester or triester. Good too. Therefore, in the present invention, sucrose monofatty acid ester 1 sucrose difatty acid ester.

Sucrose trifatty acid esters can be used alone or in combination.

When ethylene oxide is added, it is applied in an amount of 10 moles or less. If the amount exceeds 10 moles, the molecular structure of the sticky sugar contained in raw cotton will be significantly different from the molecular structure of the sticky sugar.
This is not preferable because it reduces the melting effect.

The glycol compound represented by the general formula (I) is produced by addition polymerizing 4 to 7 moles of ethylene oxide to a saturated fatty acid or unsaturated fatty acid having 12 to 8 carbon atoms, or a saturated fatty acid or unsaturated fatty acid having 12 to 18 carbon atoms. It is obtained by esterifying unsaturated fatty acids and polyethylene glycol with a degree of polymerization of 4 to 7.Addition of ethylene oxide or esterification of polyethylene glycol can be made into monoesters by acting on 1 mole of fatty acids, or It may be made to act on 2 moles to form a diester.

The fatty acid used to obtain the glycol compound has 12 to 18 carbon atoms, that is, the aliphatic hydrocarbon group in general formula (I1) has 11 to 17 carbon atoms. A particularly preferred embodiment is when the fatty acid used is lauric acid or oleic acid. This is because the glycol compound obtained using this is liquid at room temperature and has a viscosity suitable for being atomized by spraying or the like.

The number of moles of ethylene oxide added to the glycol compound is 4 to 7 moles (when polyethylene glycol is used, the degree of polymerization is 4 to 7, hereinafter expressed as the number of moles of ethylene oxide added, including the case of polyethylene glycol.

). If the number of moles added is less than 4 moles, the surfactant effect will be lowered, and the dilution and dispersion effect of the melted sticky sugar will be lowered, which is not preferable. Moreover, if the number of moles added exceeds 7 moles, the viscosity of the compound becomes high, making it difficult to apply by spraying or the like, which is not preferable.

The treatment agent for cotton yarn spinning according to the present invention can be obtained by blending 80 to 40% by weight of the above sucrose compound and 20 to 60% by weight of the glycol compound. If the blending ratio of the treatment agent for cotton yarn spinning is less than 40% of the sucrose-based compound, the dissolving action of the sticky sugar content will be reduced, which is not preferable. or,
Even if it exceeds 80% by weight, the melting action reaches the upper layer and does not change, so for the denominator exceeding 80% by weight, it is advantageous to incorporate a glycol compound having other effects into the treatment agent for cotton yarn spinning. On the other hand, the blending ratio of glycol compounds is 20% by weight.
If the patient is not sick, the dilution and dispersion effect of the dissolved sticky sugar will be reduced, which is not preferable. Moreover, if it exceeds 60% by weight, it is not preferable because the blending ratio of the sucrose-based compound to be blended at the same time decreases.

Application of the treatment agent for cotton yarn spinning according to the present invention to raw cotton is as follows:
It can be applied in the form of a spray, and the amount applied depends on the properties of the raw cotton, but is usually 0.05 to 1.0% by weight (based on the weight of the fiber, hereinafter 0.05% by weight).
It is called H, f. ) is most preferred.

(e) Effect The sucrose compound, which is one component of the treatment agent for cotton yarn spinning according to the present invention, has a molecular structure similar to the sticky sugar contained in raw cotton, and therefore has the effect of easily melting the sticky sugar. has. The other component, a glycol compound, is a type of nonionic surfactant that is liquid at room temperature, and has extremely good compatibility with the sucrose compounds mentioned above, so it can absorb sticky sugars dissolved by the sucrose compounds. It has the effect of diluting and dispersing. Therefore, by applying the treatment agent for cotton yarn spinning according to the present invention, which consists of the above two components, to raw cotton, the sticky sugar contained in the raw cotton is easily dissolved by the sucrose-based compound, and then the glycol The sticky sugar is diluted and dispersed by the system compound,
As a result, the stickiness of the raw cotton can be reduced to such an extent that troubles such as roller wrapping do not occur during spinning.

(F) Examples Example 1゜60゛S raw cotton from Sudan, 70% sucrose distearate
ffift% and polyethylene glycol (5 moles added)
A treatment agent for cotton yarn spinning prepared by mixing 30 ffililt% of monolaurate was sprayed to give 0.5% O, W, and f. This was passed through the steps of mixed batting, carding, and *i-striping. In the mixed batting process, a 13 oz/yd wrap is supplied, in the carding process, a 320 gel/6 yd sliver is supplied, and in the filament process, 6 card slivers are supplied to obtain a 6.4 times draft (first pass). Six more slivers were supplied and drafted 5.5 times (second pass) to produce a sliver of 330 gel/6 yd.

The wire speed was 60 m/min, and the number of times the roller was wound during the 30-minute operation was once in the first pass and three times in the second pass.

On the other hand, as a comparative example, Example 1. Using the same raw cotton as in Example 1, ie, without applying the treatment agent for cotton yarn spinning according to the present invention, Example 1. The mixed batting, carding, and filament processes were carried out under exactly the same conditions as above.

The number of times the roller was wound during the 30-minute operation in the filament process was 9 times in the first pass and 10 times in the second pass.

Example 2゜Example 1. 75% by weight of polyoxyethylene sucrose monolaurate and polyethylene glycol monolaurate with various added moles of ethylene oxide as shown in Table 1 were added to raw cotton adhering to a sticky substance, which was produced in a different place than the raw cotton used in . A processing agent ((a) to (
c) is a treatment agent for cotton yarn spinning according to the present invention, and fdl~
(") is another treatment agent)" was sprayed with a mixed cotton culm injection spray to apply 0.5% OJ, f, and the lamp (8)
~(f) was produced.

In addition, during the production of the lamp, the treatment agent made it impossible to spray uniformly, that is, the mist was in poor condition, and a large amount of the treatment agent adhered only to certain areas of the raw cotton, resulting in a wetting phenomenon. The visual judgment results are shown in Table 2.

The above six types of lamps from fat to ffl were heated at a temperature of 27°C.
It was passed through a carding process and a striation process in an atmosphere adjusted to a relative humidity of 55%. Table 2 shows the visual judgment results for the following phenomena: the accumulation of adhesive substances on the crush roller in the carding process, the generation of neps in the spun web, and the roller wrapping phenomenon in the filament process. Shown below.

(Note) Visual judgment was performed in the following five stages.

5...Each phenomenon was severely observed.

4...Each phenomenon was observed considerably.

3...Each phenomenon was observed from time to time.

2...Each phenomenon was rarely observed.

l...Each phenomenon was not observed at all.

As is clear from the results shown in Table 2, the wraps (al, (bl)) to which the treatment agent for cotton yarn spinning according to the present invention was applied.

(C1 is compared to (di, fc) and (rl) of the comparative example, wetting phenomenon of raw cotton that occurs during application of treatment agent, deposition phenomenon of sticky substance on crush roller during carding process, and The phenomenon of nep formation inside and the phenomenon of roller wrapping during the filament process have been significantly reduced.

(G) Effects of the Invention If the treatment agent for cotton yarn spinning according to the present invention is applied to a lamp or sliver made of sticky substance-attached raw cotton before spinning or sticky substance-attached raw cotton during spinning by means such as spraying,
By melting, diluting, and dispersing the sticky sugar present in raw cotton, etc., and reducing its stickiness, it is possible to reduce the amount of roller wrapping during each spinning process, and also to prevent stickiness in various parts of the machine. This has the special effect of being able to prevent substances from accumulating and improving the spinnability of raw cotton regardless of the presence of sticky sugars.

Patent applicant: Japan Cotton Industry Foundation Institute of Technology and Economics

Claims (1)

[Claims] Contains 80 to 40% by weight of a sucrose fatty acid ester compound represented by the following general formula (I) and 20 to 60% by weight of a polyethylene glycol fatty acid ester compound represented by the following general formula (II) A treatment agent for cotton yarn spinning characterized by: General formula (I); ▲Mathematical formulas, chemical formulas, tables, etc.▼(I) (However, Q_1, Q_2, Q_3 are each H or R_1C
O, R_1 represents an aliphatic hydrocarbon group having 11 to 17 carbon atoms, and at least one of Q_1, Q_2, and Q_3 is R_1CO. l, m, and n are each 0 or a positive integer, and l+m+n
is from 0 to 10. ) General formula (II); R_2COO(C_2H_4O)_pQ_4(II) (However, Q_4 represents H or R_3CO, and R_2, R
_3 each represents an aliphatic hydrocarbon group having 11 to 17 carbon atoms. Further, p represents an integer of 4 to 7. )