JPS6134283A - Flame-proof processing of fabric containing polyester fiber - 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 The present invention relates to post-processing of polyester fiber-containing silk fabrics to provide flame retardant treatment with excellent washing and rotting durability.

Conventional methods for imparting flame retardant properties to fibers include making the polymer itself of synthetic fibers flame retardant or flame retardant, blending flame retardants into the yarn stage, and adding flame retardants to fibers in post-processing. There are methods for adding flame retardants, but methods for making the polymer itself flame retardant and methods for blending flame retardants still have various problems such as productivity and complexity. In addition, in the post-processing method, flame retardants containing phosphorus and halogen have good temporary flame retardant performance, but no products with excellent washing durability have been found.

The present invention was developed in response to the demand for flame retardant treatment of polyester fiber-containing knitted fabrics with excellent washing durability. It has become possible to provide an excellent knitted fabric containing polyester fibers.

In the present invention, a low-molecular-weight polyester resin as described above is adhered to a polyester-containing knitted fabric in advance, and then the low-molecular-weight polyester resin has good adhesion and superior flame retardant performance compared to the polyester-containing knitted fabric. By attaching an organic flame retardant to the fabric, it is flame retardant and has excellent washing durability.

Low molecular weight polyester resins that have good adhesion and retention properties to knitted fabrics containing polyester fibers and have good affinity with organic flame retardants include alkyl esters of terephthalic acid or a mixture of terephthalic acid and isophthalic acid, whose alkyl groups are An alkyl ester polymer consisting of ethyl, propyl or butyl groups, with a molecular weight of 200 to 8,000, preferably 1,000 to 4,000, or an alkyl ester polymer consisting of ethyl, propyl or butyl groups of terephthalic acid or a mixture of terephthalic acid and isophthalic acid. Each copolymer with polyethylene glycol, polypropylene gelylcol or polybutylene glycol-μ has a molecular weight of 300 to 10,000, preferably 20
00 to 6000 is good.

And the alkyl ester polymer of terephthalic acid or a mixture of terephthalic acid and isophthalic acid is 1 to 4 moles.
0, preferably 5 to 20, and polyalkylene glycol has a mole number of 1 to 200.

Preferably, the number is 5 to 50. The terephthalic acid or isophthalic acid used herein may contain one sulfonic acid or sulfonic acid group.

This low molecular weight polyester resin is used as an emulsion,
As a method for applying it to a knitted fabric containing polyester fibers, any of the following methods can be used: a dipping exhaustion method, a padding method, a spray method, and a coating method.

In the immersion exhaustion method, the fabric to be processed is soaked in a water bath at 80~60~lO
Separately treated, then washed with water and dried.

In the padding method, in the case of dry heat treatment, the pad, after drying,
150~b For saturated steam of steaming treatment 100~130'CX60~
It can be used for 20 minutes, and in the case of heated steam, it can be used for 150 to 30 seconds.

The amount of this low molecular weight polyester resin applied is 0.05 to 5%, preferably 0.5 to 29%, based on the processed fabric Mf.
It is better to give 6. If a large amount of this low molecular weight polyene TE-P is attached, the flame retardant performance may be lowered.

The organic flame retardant to be applied in the present invention is an organic compound containing phosphorus, nitrogen, or a halogen as an active ingredient for flame retardant performance in its molecule, such as an organic phosphorus compound, an organic halogen compound, etc. These include organic phosphorus compounds, halogenated organic phosphorus compounds, phosphorus-containing aminoplasts, organic phosphorus nitrogen compounds, and organic silica halides.

Among these various organic flame retardants, there are alkyl groups in the molecule,
Those containing an alkenyl group or an aryl group are preferred from the viewpoint of affinity with low molecular weight polyesters.

Specific examples of these flame retardants are shown below.

Examples of those having an alkyl group include the following.

? R+ P-OCONH2 (R1 and R2 are C1-4 furkyl groups) Those having an alkenyl group λ Those having an aryl group Such flame retardants can be used alone or in combination of two or more, but It is not limited to these. Furthermore, there is no problem in blending other types of flame retardants with these flame retardants.

As a method of applying these flame retardants, a padding method, a spray method, a steaming method, etc. can be applied.

The adhesion amount of these flame retardants is 2-30% (OLW, f)
, preferably 5 to 20% (o, vlf).

For padding method and spray method, adhesion-1 drying, 15
Cure for 5 to 1 minute at 0 to 180°C to fix, soap, and dry.

In the steaming method, in the case of saturated steam, steaming is performed at 110 to 130° C. for 20 to 5 minutes without drying after padding.

In addition, in the case of heated steam, the temperature is 150 to 180℃ after padding.
All you have to do is process it for 5 to 1 minute.

The flame retardant attached in this way has excellent washing and dry cleaning resistance, and its durability is lower than that of a flame retardant that has not been pre-attached with low molecular weight polyester. A large difference is observed. This effect is due to the fact that flame retardants, which cannot easily adhere to fibers like polyester fibers, which are extremely hydrophobic, have a dense structure, and have poor reactivity, have an affinity for polyester fibers. By pre-depositing a certain low molecular weight polyester,
It is thought that the flame retardant easily adhered to the low molecular weight polyester.

The polyester fiber-containing cotton/fabric used in the present invention refers to ordinary polyesters such as polyethylene terephthalate and polybutylene terephthalate, as well as modified materials obtained by copolymerizing or kneading modifying components into these basic compositions. It is made of polyester, or composite yarns such as polyester and modified polyester, mixed fiber yarns, interlaced yarns, and twisted yarns, and there are no restrictions on the method of mixing the different components. Further, it is preferable that the total number of polyester fibers is at least 3096 or more. The fibers that are blended and twisted with polyester fibers are synthetic fibers and semi-synthetic fibers.
1. It may be made of fibers or natural fibers, and there is no restriction on how to mix them.

Example-1 Polyester filament processed yarn (150, d/48
f) The following processing was performed using a yarn-dyed curtain fabric consisting of 70% rayon and 30% rayon.

As the low molecular weight polyester, a copolymer of ethyl ester of a mixture of terephthalic acid and isophthalic acid and polyethylene glycal represented by the following formula was used.

OH'cC2H4+QCOQ C00CzH4:ni-o
+CzH4-OiH and \7=10 m=20 x
= 2 This low molecular weight polyester was padded with 100% squeezing using a solution of 2 (L fr/l) and then dried (10
0°C x 5 minutes) and curing (180°C x 1 minute).

Next, processing was performed using each of the following flame retardants.

Flame retardant (4) - Di(2 chloroethyl/l/) phosphate ester compound Flame retardant a3) - Carbamyl alkyl phosphate ester and guanidine hydrobromide combination Flame retardant (4) and flame retardant Describe by name of agent (B).

For these flame retardants, after attaching the low molecular weight polyester mentioned above, 10% (o, w, f) was added using a padding method, and after drying (100°C x 5 minutes), curing (18
0°C x 1 minute).

The test method was the micro burner method of JIS L-1091 method and A-1 method. Washing method is JIS L-1042
5 times using the medium temperature washer method of method F-2. Dry cleaning was performed using a wash cylinder according to JIS L-1018 method and E-2 method. It is used as a criterion for determining flame-retardant fibers, and indicates O, I (limit oxygen index).

By the way, cotton is 18.0 and polyester fiber is 23.5.
It becomes.

The results are shown in Table 1 below.

Table 1 Comparative Example 1 Example 1 was processed using exactly the same method except that low molecular weight polyester was not used.

Next, the results are shown in Table-2.

Table 2 The comparison results shown in Table 11 and Table 2 above show that by applying low molecular weight polyester in advance, flame retardant performance and dry cleaning durability are achieved.

Example 2 Numboliester 65%, fi 35% 17) The following processing was performed using a No. 30 double yarn plain woven fabric.

The following was used as the low molecular weight polyester.

HOHIIC: l 壬 ocoQcoo CsH6 snow OH
n = 15 10 flr of this low molecular weight polyester
Pad with 100% wringer using 1/l solution and dry (10
0°C x 5 minutes), then cure (160°C x 1 minute).

Next, the same deodorant (4) and flame retardant 03) as in Example-1
were deposited under the same conditions.

Next, the results are shown in Table 3.

Table 3 Comparative Example 2 Example 2 was processed using exactly the same method except that the low molecular weight polyester was not used.

Next, the results are shown in Table-4.

From the comparison results in Tables 3 and 4, it can be seen that by pre-adhering low molecular weight polyester ρ, flame retardant performance and durability against washing and dry cleaning are achieved.

Claims (1)

[Scope of Claims] A method for flameproofing a knitted fabric containing polyester fibers, which involves first attaching a low molecular weight polyester resin represented by the following general formula to the fabric to be treated, and then attaching an organic flameproofing agent thereto. Flame retardant processing method characterized by ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ where x = 1 ~ 40 R_1 = -CnH_2n - n = 2 ~ 4 A = H or SO_3M M = H or Na or ▲ Mathematical formula, There are chemical formulas, tables, etc. ▼ Here, y = 1 to 20 l = 1 to 40 m = 1 to 200 R_2, R_3 = -CnH_2n- n = 2 to 4 A = H
or SO_3M M=H or Na