JPS59160415A - Anti-stain carpet and production thereof - 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 an antifouling carpet treated with a fluorine-containing polymer and a method for producing the same.

In order to satisfy the demand for keeping carpets clean for a long time, a method of spraying water-repellent and oil-repellent substances onto the pile surface of the finished carpet has been used. Although the spray treatment method has the advantage of being simple, it is not necessarily satisfactory in terms of the effect of preventing stains1.In other words, with spray treatment, the antifouling treatment is applied to the surface of the pile, This is only at the tip, and the rest of the part is not treated with antifouling treatment, so the liquid that causes contamination spilled onto the carpet will seep into the pile and contaminate the carpet.

The present inventor has completed the present invention after repeated studies to develop an antifouling carpet free of such problems.

It is an object of the present invention to provide a method for producing an antifouling carpet, and an object of the present invention is to provide a method for producing an antifouling carpet. This is achieved by using an antifouling carpet formed from pile yarn containing a water-repellent and oil-repellent fluorine-containing polymer. A carpet is formed from a pile yarn containing a water-repellent and oil-repellent fluorine-containing main polymer consisting of a small amount of cross-linkable monomer units and a cross-linking agent, and an adhesive is applied to the back side of the carpet, and a secondary base fabric is applied to the back side if necessary. The stain-resistant carpet obtained by the method of the present invention is manufactured by using a carpet manufacturing method in which the adhesive is dried and the polymer is crosslinked by heating after pasting. The entire carpet is antifouling treated, and the polymer itself as an antifouling agent is cross-linked, so the antifouling effect lasts longer and is significantly improved compared to conventional spray-treated carpets. It can be said to be an excellent anti-fouling carpet.

The water-repellent and oil-repellent fluorine-containing polymer used in the present invention is a polymer composed of a fluoroalkyl group-containing monomer as a main component and a small amount of a crosslinkable monomer.

As the 7At-C1 alkyl group-containing monomer, JP-A-49
Preferred monomers include acrylates and methacrylates having a fluoroalkyl group at the end of a side chain, which have been disclosed in Japanese Patent Application Laid-Open No. 53-50077, etc., and their polymers have water and oil repellency. There is no particular restriction as long as it is a polymerizable fluoroalkyl group-containing monomer having the following.

For example, OF, (OF, ), OH, OH, OO
0H-CH,.

C! F, (OF,) 40H! 000(OH,)-OH,
.

OF, (CFt)4((!Ht)2000(OH,)-
Oh! Particularly preferred monomers include acrylates and methacrylates containing 0 to 2 o perfluoroalkyl groups, such as 0 to 2 o fluoroalkyl group-containing monomer units in the polymer.
-80% by weight, preferably 55-75% by weight.

The crosslinkable monomer may be one that can form a copolymer with a fluoroalkyl group-containing monomer that can be crosslinked by the use of a crosslinking agent or simply by the action of heat, including conjugated diene monomers such as butadiene and imprene. unsaturated carboxylic acids such as diacrylic acid and methacrylic acid; glycidyl acrylate;
Ethylene group-containing monomers such as glycidyl methacrylate and allyl glycidyl ether; acrylamide and methacrylamide such as N-methylol acrylamide, N-methylol methacrylamide, methylolated diacetone acrylamide, and methylolated diacetone methacrylamide; ethylene dimethacrylate; Examples include 2-chloroethyl vinyl ether and chlorvinyl acetate. Particularly preferred crosslinkable monomers are methylol group-containing acrylamide and methacrylamide, which are crosslinked by mere heating.

The crosslinkable monomer unit in the polymer is usually 0.5 to 10% by weight.
, preferably 1 to 3% by weight.

The structural unit of the polymer of the present invention may include a third monomer unit that can improve the texture, washing resistance, dry-dying resistance, solubility of the polymer, etc. of the pile yarn. Can be done.

Examples include aromatic vinyl monomers such as vinyl chloride, vinyl fluoride, and styrene; alkyl esters of acrylic acid and methacrylic acid such as butyl acrylate and butylmethacrylate; ethylene, vinyl acetate, acrylonitrile, etc. 〇Such a third monomer unit is usually 10 to 495 in the polymer.
% by weight The method for producing the fluorine-containing polymer used in the present invention is not particularly limited, and can be produced using, for example, a known polymerization method disclosed in Japanese Patent Publication No. 39'-25093.

The crosslinking agent used in the present invention is not particularly limited, and any crosslinking agent conventionally used for crosslinking crosslinkable polymers containing the various crosslinkable monomers described above as constituent units can be used.

Crosslinkable monomers and their typical crosslinking agents are shown below.

In the case of diene monomers, organic peroxides, in the case of epoxy group-containing monomers, amines, in the case of unsaturated carboxylic acids, epoxy compounds, aziridinyl compounds, etc., methylol group-containing acrylamide and methacrylamide In this case, acidic catalysts such as oxalic acid and citric acid can be used.

The amount of crosslinking agent used is not particularly limited, but usually polymer 1
The amount is 90.1 to 10 parts by weight per 00 heavy-duty parts.

The method for manufacturing a carpet of the present invention includes the steps of forming a carpet with pile yarn containing the above-mentioned fluorine-containing polymer and a crosslinking agent (both may be collectively referred to as an antifouling agent hereinafter), and forming a carpet by heating. crosslinking the polymer in the yarn.

The antifouling agent-containing pile yarn used in the first stage is prepared by impregnating the raw cotton with the antifouling agent by soaking the raw cotton in a solution or emulsion of the antifouling agent at the raw cotton stage of various fibers before spinning the pile yarn. , Pile yarn that is dried at a temperature that does not cause crosslinking and then spun using a conventional method, or pile yarn that is prepared by treating the spun pile yarn in the same manner as raw cotton and containing an antifouling agent. Any thread may be used. In the present invention, a conventional method can be used for producing the antifouling agent-containing pile yarn, and the method is not limited to the above method. The method using immersion will be explained below as an example.

The antifouling agent can be used in a latex state when a fluorine-containing polymer is produced by emulsion polymerization. The crosslinking agent may be mixed into the latex as a solution in a suitable soluble solvent. In addition, when the polymer is produced by solution polymerization, the solution of the polymer can be used as it is, and a crosslinking agent can be dissolved in it.When using the antifouling agent in the form of a latex or as a solution, The concentration of antifouling agents is usually 0 as a solid content.
．． The content is 1 to 10% by weight, preferably 0.5 to 5% by weight, more preferably 0.5 to 3% by weight. The time for which the antifouling agent is in contact with the raw cotton or pile yarn is not particularly limited as long as the antifouling agent is sufficiently soaked into the raw cotton or pile yarn. Immersion for one hour or less is usually sufficient.

Of course, it is also possible to add insect repellents, antibacterial and antifungal agents, flame retardants, and antistatic agents to the antifouling agent latex or solution. is necessary. If crosslinking progresses during drying, it will cause various inconveniences during the spinning of raw cotton or the stage of molding carpets made from pile yarn, so it is desirable to suppress crosslinking during drying. Therefore, the drying temperature should be 100C or lower, preferably 70C or lower. It is. The drying method itself is not particularly limited, but includes, for example, drying in an open hot air circulation system.

After drying, the raw cotton is spun into pile yarn using conventional methods.

In the production of carpets using pile yarn containing an antifouling agent, the pile yarn is first pierced through a tufting machine and a base fabric to form a greige fabric in a conventional manner. If the pile yarn is cut on the carpet surface during tufting, it will be a cut pile carpet, and if it is not cut, it will be a loop pile carpet.In the present invention, the pile yarn may be of any type, including wool, wool, etc. Examples include rayon, acrylic fiber, nylon, polyester, and polypropylene. The base fabric is also not particularly limited, and may include jute, polypropylene, etc. Although an adhesive is generally applied to the back side of the greige fabric of a tufted carpet to fix the yarn to the base fabric, the present invention In this case, this adhesive is not particularly limited either. Usually, an adhesive containing styrene-butadiene copolymer latex as a binder is used. The amount of adhesive to be used is not particularly limited as long as it follows a conventional method.

The carpet backed with adhesive using a doctor roll or the like is then guided to a dryer such as a drying oven to evaporate the moisture in the adhesive after backing with a secondary base fabric if necessary.

The subsequent crosslinking of the invention is carried out in a dryer with drying of the adhesive.

The temperature at which crosslinking sufficiently proceeds can be appropriately determined depending on the combination of crosslinking monomer and crosslinking agent in the antifouling agent. Normally it is around 150C. Normally, drying is done by blowing hot air onto the back side of the carpet or heating it with an infrared heater, and the drying temperature is usually around 150C, but the temperature of the pie and groove parts on the carpet surface is heated by the back side of the carpet. is taken away, so it drops to about 100C.

Therefore, if the crosslinking of the antifouling agent in the pile yarn is insufficient at about 100C, it is necessary to heat-treat the carpet surface that has left the loading orb again using an appropriate heating means such as an infrared heater. It may be determined as appropriate to ensure sufficient crosslinking depending on the type of crosslinkable monomer and crosslinking agent in the staining agent.

The stain-resistant carpet pile obtained by method 2 of the present invention has a strong stain-proofing fluorine-containing polymer throughout the pile, so it has a remarkable water and oil repellent effect as well as a stain-proofing effect. Since the durability of the carpet is also improved, by carrying out the method of the present invention, it is possible to provide an extremely excellent stain-resistant carpet.

The present invention will be specifically explained below using examples.

Example 1 Fluoroalkyl group-containing monomer [CU,=CHOOOC
A fluorine-containing polymer containing 70% by weight of HI OH, Op Fu ], 28% by weight of n-butyl acrylate, and 2% by weight of N-methylolacrylamide was produced by conventional emulsion polymerization. The obtained latex was diluted with water to give a solid content concentration of 0.5 kg by weight. To this latex, 0.001 P of citric acid was added (#1001 latex).

A pile yarn of acrylic fiber of Shigai was immersed in Latex containing a cross-linking agent for 5 minutes, the water was thoroughly shaken out, and the pile yarn was dried at 50C for 8 hours. 1 on the back of the greige fabric of the cut pile carpet (pile length 7 glue)
A styrene-butadiene rubber adhesive composition was applied uniformly at a rate of 5 kg/m'' and dried in a dry open oven at 150C.
A cut pile carpet was obtained by drying and crosslinking for 0 minutes (carpet of the present invention) o A cut pile carpet using pile threads of acrylic fibers without antifouling treatment was created by the same operation □ Latex was applied to the surface of this carpet A solution prepared by dissolving the copolymer separated and dried in methyl chloroform (solid content 0.5% by weight) was applied by FC spray and dried at 150°C for 10 minutes (comparative example carpet).

Water repellency using the above two types of cut pile carpet
The results of measuring oil repellency are shown in Table 1.

Test method (1) Water repellent isopropyl alcohol 20 vo1%/water 80101
% mixed solution was gently dropped onto nine locations on the pile surface using a pipette with a droplet size of 3 mm in diameter, and the shape of the droplets was observed.

If the droplets at six locations maintain their shape after 3 minutes or more, it is determined to pass, and if the shape of the droplets disappears after less than 3 minutes, it is determined to be failed.

(2) Oil repellency According to AATOOllB, apply each standard solution in the table below to the pile surface using a pipette with a droplet size of 5 m.
The shape of the droplet was observed after 30 seconds, and the droplet shape was maintained at 6 locations without penetrating into the pile. demand.

Standard solution (Note to Table 1) "After cutting the pile surface" refers to the test results after cutting one or two piles of the carpet surface.

In addition, after rubbing the two types of carpet surfaces with a dry cloth 300 times,
Water and oil repellency tests were conducted, and the carpet of the present invention ranked first.
The results shown in the table were reproduced; in the comparative F11 carpet, the water repellency penetrated instantly, and the effect was reduced to 1st class repellency.

Example 2 Polymerization was carried out in methylchloroform using azobisisobutyronitrile as a catalyst to obtain a copolymer of 2i. The polymer solution was diluted with methyl chloroform to a solids concentration of 0.5% by weight.

The same pile yarn as in Example 1 was immersed in a polymer solution for 5 minutes, the liquid was thoroughly drained, and then left to dry at room temperature for 1 day. The same carvera tiger as in Example 1 was made using the pile yarn. Drying and crosslinking were carried out at 150C for 120 minutes.

The results of water repellency and oil repellency are shown in Table 2.

Procedural amendments dated 27th Hiroki, Showa Sg, 1996, Mr. Commissioner of the Patent Office, 1, Indication of the case, Patent application S'g-33glc, No. 2, Name of the invention: antifouling carpet and its manufacturing method 3, Person making the amendment; Related Patent Applicant Address 587-5 Tokoku-cho, Izumi City, Osaka Prefecture, Full text of the specification subject to amendment (engraving only. No changes in content 0) 6 Contents of amendment as attached.

Claims (1)

[Scope of Claims] 1. A carpet having antifouling treated piles, in which the piles are crosslinked, and the piles are water repellent, consisting of a fluoroalkyl group-containing monomer as the main structural unit and a small amount of crosslinkable monomer units. An antifouling carpet characterized in that it is formed from pile yarn containing an oil-repellent fluorine-containing polymer. 2. A carpet is formed from a pile yarn containing a water-repellent and oil-repellent fluorine-containing polymer consisting of a fluoroalkyl group-containing monomer as the main structural unit and a small amount of a cross-linkable monomer unit, and a cross-linking agent. , manufacturing an antifouling carpet characterized in that an adhesive is applied to the back side of the carpet, a secondary base fabric is attached to the back side if necessary, and heating is performed to dry the adhesive and crosslink the polymer. Method.