JPS58132175A - Fiber treating agent - 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] Conventionally, hard finishing of various textile products has been done by applying melamine/formalin odor fat in urea/formalin resin, but such resins have the disadvantage of emitting formalin odor.
For this reason, polyvinyl alcohol (hereinafter referred to as PVA) is preferred.

The use of aqueous dispersions of sodium alginate, toluene, or polyvinyl acetate has been considered, but the hardness of the six solid lines is not sufficient and the hardness is lost when washed. Although there are several ways to make these materials waterproof, the current situation is that no waterproofing agent has been found that provides sufficient performance.

In view of the current situation, we investigated the possibility of synthesizing modified PvAt with water resistance by introducing a group having crosslinking properties into the PVA molecular chain. As a result, we found that within 5 molecules, 1 in the formula (where R1 is Nine hydrogen atoms are lower alkyl groups.

RI Fi indicates an alkyl group. ) was found to have excellent water resistance and remarkable performance as a heat treatment agent for textiles. I have completed A.

The modified PVA constituting the fiber #16 shoe shoe used in the present invention is vinyl ester, especially acetic acid heel!
: Formula CHi=CH”-CONHCHiO-RI(
Monomers represented by R"fl hydrogen J [child t or lower alkyl group, V is an alkyl group], especially N- where R1 is hydrogen or a methyl group and 11 is an alkyl group having 1 to 4 carbon atoms.
Alkoxymethyl(meth)acrylamide, preferably FiN-methoxymethylacrylamide or N-
n-butoxymethylacrylamide is copolymerized using a radical polymerization initiator, and then an alkaline catalyst is applied to the alcohol solution of this copolymer to partially or highly quench the vinyl ester units in the copolymer. It is produced by converting it into vinyl alcohol units.

The vinyl ester that can be used in the production of the modified PvAt used in the present invention can be converted into vinyl alcohol by saponification after copolymerization, so any vinyl ester can have essentially the same effect, but economically. Vinyl acetate is preferred.

In addition, the other copolymerization component CM2w-CR'-
C0NHCHiO-R"(R'U hydrogen PK child 1 ft
Specific examples of monomers represented by -u lower ful*yl group (R1 is an alkyl group) include N-methoxymethylacrylide, N-methoxymethylmethacrylide, N-ethoxymethylacrylamide, and N-ethoxymethylmethacrylamide. , N-n-propoxymethylacrylide,
N-n-propoxymethylmethacrylamide, N-isopropoxymethylacrylamide, N-isopropoxymethylmethacrylamide, N-n-butoxymethylacrylamide, N-butoxymethylmethacrylamide, N-inobutoxy7methylacrylamide, Examples include N-inbutoxymethylmethacrylamide, N-tert-butoxymethylacrylamide, and N-t@rt-butoxymethylmethacrylamide, among which N-methoxymethylacrylamide or N-n-butoxymethylacrylamide 4 is particularly preferred in terms of effectiveness and economy. These monomers are well known in the art, and copolymers with vinyl acetate and acrylic esters are shown, for example, in British Patent No. 955,420. However, the saponified copolymer product produced by saponifying a copolymer of N-alkoxymethyl (meth)acrylamide and vinyl ester is not known, and the saponified copolymer product as shown in the present bAK It is completely unknown that a fiber treatment agent with industrially important and excellent performance can be obtained.

The above-mentioned saponified product of the copolymer of 9N-alkoxymethyl (meth)acrylamides and vinyl ester and a specific method for producing the same have been developed by the present inventors, and have already been filed in Japanese Patent Applications No. 176024/1983 and No. 56-176. A patent application has been filed as No. 178594.

The modified PVA used for the purpose of the present invention usually has a content of N-alkoxymethyl (meth)acrylamide units of 0.05 to 10 mol, saponified [707, one or more (and) 90 to It is preferable to set it as 100 mol-). By the way, K increases the chain length of the alkyl group in the N-alkoxymethyl (meth)acrylamide used.
When the degree of modification is high and/or when the content of vinyl acetate units is high, the water solubility of the produced modified PVA may decrease, and when a water-soluble modified PVA is intended.

11m of N-alkoxymethyl (meth)acrylamide
and content, it is necessary to adjust the content of vinyl acetate units.

It is industrially preferable to use a method in which a white gel or precipitate is produced as the saponification reaction progresses, as in the case of ordinary Pvum, and this can be powdered, crushed, washed, and dried as necessary. A modified PVA copolymer powder can be obtained.

The modified PVA-based fiber treatment agent of the present invention is dissolved or dispersed in water, and then a base material such as a fiber or textile product is attached thereto by a method such as impregnation, coating, or spraying.

Used in drying methods. The concentration of modified PVA is 1~
209G is usually selected, and the coating amount is preferably l~30141 with respect to the weight of the substrate, and L< is 3~1s. Drying is preferably carried out at a temperature of 70 to 180°C for 1 to 20 minutes.

Although the modified PVA fiber treatment agent of the present invention exhibits high performance as it is, it tends to be more effective when the #A solution is made acidic. 1 normal P as required
VA or acrylamide-modified PVA, carmexyl group-modified PVA, lactone ring-containing modified PVA, sulfone group-modified PVA, hydrophobic group-modified PVA, cationic group-modified PVA
Modified PvA, To starch, modified starch, polyacrylamide, polyvinyl acetate aqueous dispersion IK, urea, etc.
The combined use of formalin resin, melamine/formalin resin, sodium alginate, carboxymethyl cellulose, etc. may be effective depending on the purpose. Widely used for hard finishing of synthetic fibers, natural fibers such as linen, m, blends thereof, and clothing products such as cloth products, net products, threads, twines, ropes, shirts, pants, interlinings, etc. . It is also useful as a warp sugar agent.

The present invention will now be described in more detail with reference to hard finishing implementations 911. Below, unless otherwise specified, ``part'' or ``-'' refers to 1.
It is based on quantity.

Example I Saponifying a copolymer of N-methoxymethylacrylamide and vinyl acetate containing 2 mol of N-methoxymethylacrylamide units, with a saponification degree of vinyl acetate units of 98, 5 moles, average degree of polymerization is 17
A polyester/cotton (65/35) blend fabric for interlining of 300 x 300 wa was immersed in a precious water bath solution of 50% modified PVA, and then the liquid was squeezed out so that the solid content of the modified PVA was 496% of the weight of the fabric. This was dried at 80°C for 12 minutes.9.

The hardness of the obtained toe liner fabric was measured by a cantilever method. Furthermore, this cloth was washed for 30 minutes in a household electric washing machine using 0.4 centimeters of a neutral detergent at a bath ratio of 1/25.40° C., dried at room temperature, and then its hardness was measured. Furthermore, the washing effect was measured after washing 5 or 10 times. The results are shown in tsllll 0 Comparative Example 1.2 In place of the modified PVA in Example 1, unmodified saponified PVA [98.5 mols], average degree of polymerization 1750
(Comparative Example 1) Rurui Sodium Alginate (Comparative Example 2)
) was used, but the same method as in Example 1 was carried out. The results are shown in Table 1.0 Examples 2 to 5 Fabric was prepared in the same manner as in Example 1 except that modified PVA shown in Table 2 was used in place of the nine-modified PVA used in Example 1. Measured on hardness. The results are shown in Table 3.

Table 2 Table 3

Claims (1)

[Scope of Claims] (1) A fiber treatment agent containing modified polyvinyl alcohol containing a copolymerized unit represented by the following general formula (1) in the molecule. 1 (Here, 11 is a hydrogen atom or a lower alkyl group. Each means a g2Fi alkyl group.) (2)
The fiber treatment agent according to claim 1, wherein the modified polyvinyl alcohol is a saponified product of a copolymer of N-methoxy mesol acrylamide and vinyl acetate. (8) The fiber treatment agent according to claim 1, wherein the modified polyvinyl alcohol is a saponified product of a copolymer of Nn-methoxy mesol acrylamide and vinyl acetate.