JPS62129335A - Deodorant polyvinyl chloride sheet material - Google Patents

Abstract

PURPOSE:To obtain the titled material useful as wall covering materials and various surfacing materials, by coating a base with a polyvinyl chloride paste resin containing specific deodorant ingredient followed by gelling and further, if needed, surface processing. CONSTITUTION:(A) A deodorant ingredient prepared by incorporating (i) 80-90pts. by wt. of a ferrous salt (pref. ferrous sulfate) with (ii) 20-10pts. by wt. of citric acid and/or citrate (alkali metal salt of citric acid, csp. sodium citrate), pref. 15-5pts. by wt. of citric acid and 5-1pt. by wt. of a citrate is incorporated in (B) a paste resin made by suspension of polyvinyl chloride particles prepared by suspension polymerization in a liquid plasticizer so that the component A accounts for 0.1-20wt% in the total system. The resultant composition is coated on a base, being heated at 140-230 deg.C for 0.5-2min to effect gelation; and, if needed, a surface processing such as embossing is carried out, thus obtaining the objective sheet material.

Description

[Detailed description of the invention] (Industrial use!?) The present invention uses deodorizing polyvinyl chloride (hereinafter referred to as PvC)
The present invention relates to sheet materials, and more particularly to deodorizing PVC sheet materials useful as wall covering materials and various surface materials.

(Prior Art) Conventionally, PVC sheet materials, which are made by applying PVC paste resin to the surface of paper, woven fabric, metal, etc., gelling it, and then surface-treating it as necessary, have been used for wallpaper, leather, etc. It is widely used as a wall covering material or as a surface material for various articles. Also, foamed PvC sheet materials made of PVC paste resin containing a foaming agent are also widely used.

(Problem that the invention is trying to solve) PV as above
C sheet materials are widely used as wall covering materials, flooring materials, exterior materials for houses, interior materials for automobiles, etc., but they are particularly useful in places where bad odors are generated or accumulated. is expected to be absorbed.

For example, PV that can absorb bad odors in toilets, cars, etc.
By using sheet materials made of C, it is expected that these areas will always be kept free of bad odors.

(Means for Solving the Problems) As a result of intensive research in order to solve the problems of the prior art as described above, the inventor of the present invention discovered that when manufacturing a PVC sheet material using PVC paste resin, The present invention was completed based on the finding that a deodorizing PVC sheet material with excellent deodorizing properties can be obtained by incorporating a specific deodorizing component into the material.

That is, the present invention provides a deodorizing PvC sheet material in which a PVC base resin containing a deodorizing component is applied onto a base material, then gelled, and further surface-treated as necessary. This is a deodorizing PVC sheet material characterized by iron salt and citric acid and/or citrate.

Next, to explain the present invention in more detail, the PVC paste resin used in the present invention is one in which PVC particles prepared by suspension polymerization are suspended in a suitable liquid plasticizer, and does not contain a solvent. It contains both a plastisol and an organosol containing a small amount of solvent. Other necessary ingredients include stabilizers, fillers, gelling agents,
Optionally contains foaming agents, coloring agents, etc. This kind of PC
Paste resin itself has been widely used for a long time.
Various grades are available on the market, any of which can be used in the present invention.

The main feature of the present invention is that the above-mentioned ferrous sulfate and citric acid and/or citrate are used in combination as a deodorizing component.

That is, it is known in the prior art to use an aqueous solution of a ferrous salt as a deodorizing agent, but such an aqueous solution of a ferrous salt can be applied to various papers, plastic sheets, woven fabrics, non-woven fabrics, or composites thereof. When coated and/or impregnated with the sheet and dried by heating, ferrous salt precipitates as water evaporates, making it easy for the precipitated ferrous salt to fall off from the sheet, and discoloring the ferrous salt and damaging the base material. The sheets were colored brown, the deodorizing effect was reduced, and the commercial value of the sheets, especially sheets with various types of printing, was significantly lowered.

In the present invention, when such ferrous salt is combined with citric acid or citrate or both and is added to PvC paste sol to create sheets, the ferrous salt does not impair the deodorizing effect. It was also discovered that the ferrous salt causes little brown discoloration, and that, in combination with the deodorizing effect of citric acid and/or citrate, it exerts a deodorizing effect that is greater than the sum of the unique deodorizing effects of each compound. .

The individual deodorizing compounds used in the present invention are all known compounds, and various ferrous salts can be used as the ferrous salt, but ferrous sulfate is particularly preferred. As the citrate, an alkali metal salt of citric acid, particularly a sodium salt, is suitable.

As for the deodorizing component made of ferrous salt and citric acid and/or citrate as described above, their usage ratio is also important.If the total amount is 100 parts by weight, 8 parts by weight of ferrous salt.
The ratio of citric acid and/or citrate to 0 to 90 parts by weight is 20 to 10 parts by weight, and the most preferable combination and ratio is 80 to 90 parts by weight of ferrous salt, 15 to 5 parts by weight of citric acid. part by weight, and 5 to 1 part by weight of citrate, and in such a combination and ratio, the above objects of the present invention are best achieved.

Any of the above-mentioned deodorizing components can be used in the present invention, and the amount used is 0.0.
A proportion of 1 to 20% by weight is suitable. Usage is 0
．． If it is less than 1% by weight, the deodorizing effect will be insufficient;
Even if the amount exceeds 0% by weight, it is uneconomical because the effect will not increase any further.

The deodorizing PVC sheet material of the present invention uses a PVC base resin containing a deodorizing component as described above, and can be applied to any base material 1 such as paper, woven fabric, non-woven fabric, metal, wood, etc. Approximately 0.0"5 to 2.0mm on the surface of
Apply to a thickness of about
．． It is obtained by gelation by heating for about 5 to 2 minutes. In the above process, a foamed deodorizing PVC sheet material can be obtained by incorporating an appropriate foaming agent into the PVC paste resin in advance.

Furthermore, it is a matter of course that the surface of the deodorizing PC sheet material of the present invention formed as described above can be subjected to various surface treatments, such as embossing, printing, formation of a surface layer, etc.

(Operation Φ effect) The deodorizing PVC sheet material of the present invention obtained as described above contains a relatively large amount of organic polycarboxylic acid, which is a deodorizing component, in the sheet, and therefore has a basic malodor. Because it has the property of absorbing components such as ammonia-based malodor components, it is very useful as a surface material for wall coverings, flooring materials, decorative materials, etc. in places where malodors occur or accumulate.

Next, the present invention will be explained in more detail with reference to Examples. Note that parts and percentages in the text are based on weight.

Example 1 50 parts of PvC paste resin (Sumilift PXN, manufactured by Sumitomo Chemical), 20 parts of dioctyl phthalate, 4 parts of lactic acid ester plasticizer (C, L, P, manufactured by Ohe Chemical), 1 part of cadmium-barium stabilizer , 20 parts of calcium carbonate, 5 parts of zinc oxide, 80 parts by weight of finely ground ferrous sulfate, 15 parts by weight of citric acid, and 5 parts by weight of sodium citrate were thoroughly mixed to prepare a plastisol. This was applied to the surface of flame-retardant paper to a thickness of 0.2 cm, gelled at 140°C for 60 seconds, and the surface was then printed and embossed to produce the deodorizing PVC of the present invention. It was made into a sheet material.

The above deodorizing PVC sheet material of the present invention was
Cut to 200a+m, glue the two pieces back to back to avoid any influence from the back side, place this in a 300ml Erlenmeyer flask, add 10 microliters of 28% ammonia water, seal it, and completely remove the ammonia from the gas. It became. When ammonia gas was measured over time at 25°C using a kita-type gas detection tube, the following deodorizing effect was obtained.

1 portion 1 standing portion 20 pieces blank 8,500pp 6,000ppm
5. ? OOppm Kimatasato Uzu 2,500pp■ 7
00ppm 1100ppNote: The blank is the same PVC sheet material as the product of the present invention, except that it does not contain a deodorizing component.

Example 2 50 parts of PVC paste resin (Sumilit PXN, manufactured by Sumitomo Chemical), 30 parts of dioctyl phthalate, 0.5 part of barium-zinc stabilizer, 0.3 part of zinc oxide, 1 part of titanium oxide
5 parts azodicarboxamide (blowing agent), 2 parts turpentine, 0.2 parts modified acrylic prepolymer and 90 parts by weight of finely ground ferrous sulfate, 8 parts by weight of citric acid and 2 parts by weight of sodium citrate. 15 parts of the mixture were thoroughly mixed to form a plastisol. This was applied to the surface of flame-retardant paper to a thickness of 0.2 m+s, gelled and foamed at 200 to 205°C for 80 seconds, and then printed and embossed on the surface of the paper. Foaming P
It was made into a vC sheet material.

The above deodorizing PVC sheet material of the present invention was 50×20
Cut into 0ffi11 pieces, glue the two pieces back to back to avoid any influence from the back side, place this in a 300ml Erlenmeyer flask, add 10 microliters of 28% ammonia water, seal it, and completely remove the ammonia from the gas. It became. When ammonia gas was measured over time at 25°C using a kita-type gas detection tube, the following deodorizing effect was obtained.

i bonsai l tachibu nira upper l tachibuki blank J500pp+* 8,000ppm
5,700pp II Korodan Uzu 2,500pp*
700PP soda 100PPII Note: The blank is the same PVC sheet material as the product of the present invention, except that it does not contain a deodorizing component.

Example 3 A polyester woven fabric was used as the base material in Example 1, and the other conditions were the same as in Example 1 to prepare the deodorizing foamed PV of the present invention.
A C sheet was obtained. In addition, the deodorizing effect was measured in the same manner and the results were as follows.

1 tachi nidan” 9 shao 1 λ” 1 tang blank J500ppm G, QQOppm
5,7 QOPP! 1 tree” 11 hot water 2,500ppm
800pp■ 110ppmExample 4 A polyester woven fabric was used as the base material in Example 2, and the other conditions were the same as in Example 2 to produce the deodorizing foamed PV of the present invention.
A C sheet was obtained. In addition, the deodorizing effect was measured in the same manner and the results were as follows.

i bonsai stop car quantity Eeco U1 blank J500ppm 6,000pp+s
5,700ppm water” 11ω 3,000ppw
900pp+* 110ppm Patent applicant Dainichiseika Kagyo Co., Ltd. Agent Patent attorney Yoshi 1) Hiroshi Katsu...-716-Mi, Go

Claims (2)

[Claims] (1) In a deodorizing polyvinyl chloride sheet material obtained by coating a base material with a polyvinyl chloride paste resin containing a deodorizing component, then gelling it, and further surface-treating it as necessary, the deodorizing component is the first A deodorizing polyvinyl chloride sheet material comprising iron salt, citric acid and/or citrate. (2) Deodorizing properties according to claim (1), wherein the deodorizing component comprises 80 to 90 parts by weight of ferrous salt, 15 to 5 parts by weight of citric acid, and 5 to 1 parts by weight of citrate. PVC sheet material.