JPH11199731A - Vinyl chloride resin composition excellent in anti-stick quality and water passage material made therefrom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composition having good wettability with water and excellent in flow drop by compounding a vinyl chloride resin with a plasticizer and a specified amount of a surfactant comprising a partial ester of a higher fatty acid with a polyhydric alcohol. SOLUTION: 100 pts.wt. vinyl chloride resin is compounded with 1-100 pts.wt. plasticizer and at least 6 pts.wt. surfactant comprising a partial ester of a higher fatty acid with a polyhydric alcohol. The vinyl chloride resin used is a vinyl chloride homopolymer having a degree of polymerization of about 80-3,000, a copolymer based on vinyl chloride, or a blend of a vinyl chloride resin with another polymer. The higher fatty acid used is a 10-22C saturated or unsaturated fatty acid or the like. It is desirable that the surfactant is used in such an amount that the angle of contact between the composition and water is 35 deg. or smaller. This composition is useful as a water passage material used in places where the gradient is small.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention has good wettability with water,
The present invention relates to a vinyl chloride-based resin composition having excellent dripping properties, and a flowing water channel material suitable for use in a place where a gradient is small.

[0002]

2. Description of the Related Art When floors such as outdoor corridors and verandas are wet with rainwater, it is difficult to drain the rainwater smoothly because these floors are originally small in slope. Also,
Similar problems occur in places where water is used, such as factories and treatment facilities.

[0003]

DISCLOSURE OF THE INVENTION The present inventors have selected a specific surfactant described in detail below and blended it with a vinyl chloride-based resin. Without impairing the moldability and excellent physical properties of the vinyl chloride resin, it is possible to improve the wettability of the vinyl chloride resin with water, to significantly improve the dripping property, and to reduce the vinyl chloride resin composition with a small gradient. It has been found that it is possible to make the water on the floor and the like flow smoothly to the drainage ditch by constructing on the floor and the like.

That is, an object of the present invention is to improve the wettability with water, to have excellent dripability and its sustainability, to effectively drain water even when the inclination angle is small, and to use it in a place with a small gradient. An object of the present invention is to provide a vinyl chloride resin composition useful as a flowing water channel material.

[0005]

According to the present invention, 1 to 100 parts by weight of a plasticizer and 100 parts by weight of a polyvinyl chloride resin and a polyhydric alcohol derived from a polyhydric alcohol and a higher fatty acid are used. The present invention provides a vinyl chloride resin composition having excellent dripping properties, comprising 6 parts by weight or more, preferably 8 to 30 parts by weight of a surfactant comprising an ester. According to the present invention, there is further provided a flowing water channel material comprising the vinyl chloride resin composition.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a polyhydric alcohol partial ester derived from a polyhydric alcohol and a higher fatty acid is selected from various surfactants and blended with a vinyl chloride resin together with a plasticizer. I do. The above-mentioned polyhydric alcohol partial ester is excellent in miscibility with vinyl chloride resin, and excellent properties, mechanical properties,
It is possible to modify the surface of the vinyl chloride resin composition and improve the wetting with water without impairing the weather resistance and the like.

When this composition is used as a flowing channel material,
Rainwater or the like does not accumulate in the form of water drops or puddles, but uniformly wets on the surface and diffuses and flows. Even when the gradient angle is small, good drainage can be obtained. And, by using this vinyl chloride resin composition, it can be directly attached to the floor of an outdoor corridor or a veranda, etc.
Construction management is easy, quality reliability can be improved, and construction and management costs can be reduced. There is also an advantage that it can be easily added to an existing building.

In the present invention, when the polyhydric alcohol partial ester is blended in an amount of 6 parts by weight or more per 100 parts by weight of the vinyl chloride resin, as shown in the examples described below,
Satisfactory dripping properties are obtained, and especially when blended in an amount of 8 parts by weight or more, the persistence of the dripping properties can be remarkably enhanced. That is, 30 ° C. oven in the example described later
The test of standing for a day is an extremely severe test for confirming the bleed-out of the vinyl chloride resin composition. It clearly shows that the resin composition is extremely excellent in persistence of dropping property.

In the present invention, the fact that the polyhydric alcohol partial ester imparts excellent dripping properties to the vinyl chloride resin has been found by the present inventors as a phenomenon as a result of numerous experiments. The reason is not necessarily clear, but is presumed as follows.

[0010] Polyhydric alcohol partial esters derived from polyhydric alcohols and higher fatty acids are classified into nonionic surfactants in terms of classification, but surfactants, especially nonionic surfactants, are used at high temperatures. When it is exposed to, there is a tendency that heat resistance is inferior, such as generating white smoke and decomposing, and even if it is blended with vinyl chloride resin that requires molding at high temperature,
It is not expected that the desired effect is obtained.

However, a partial ester of a polyhydric alcohol derived from a polyhydric alcohol and a higher fatty acid can be stably incorporated into a vinyl chloride resin despite the high temperature processing of the resin. At the same time, they have found that the surface modification can be performed effectively and continuously. It is considered that the higher fatty acid present in the form of a partial ester with a polyhydric alcohol contributes to the stability and the duration of the effect.

The vinyl chloride resin in the present invention includes, in addition to a vinyl chloride homopolymer (so-called straight polymer) having a degree of polymerization of about 800 to 3000, a copolymer containing vinyl chloride as a main component, and a vinyl chloride resin. And other polymers.

The vinyl chloride copolymer includes vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-propylene copolymer, vinyl chloride-styrene copolymer, and vinyl chloride-isobutylene copolymer. Coalescing,
Vinyl chloride-vinylidene chloride copolymer, vinyl chloride-styrene-maleic anhydride terpolymer, vinyl chloride-styrene-acrylonitrile copolymer, vinyl chloride-butadiene copolymer, vinyl chloride-propylene chloride copolymer, Vinyl chloride-vinylidene chloride-vinyl acetate terpolymer, vinyl chloride-acrylate copolymer, vinyl chloride-maleate copolymer, vinyl chloride-methacrylate copolymer, vinyl chloride-acrylonitrile copolymer And polymers such as coalesced and internally plasticized polyvinyl chloride.

As a blend with another polymer, the above-mentioned vinyl chloride resin and α, such as polyethylene, polypropylene, polybutene and poly-3-methylbutene, are used.
Polyolefins such as olefin polymers or ethylene-vinyl acetate copolymers, ethylene-propylene copolymers and copolymers thereof, polystyrene, acrylic resins, styrene and other monomers (for example, maleic anhydride, butadiene, With acrylonitrile), acrylonitrile-butadiene-styrene copolymer, acrylate-butadiene-styrene copolymer, methacrylate-butadiene-styrene copolymer, polyvinylidene chloride, chlorinated polyvinyl chloride, Blends with other chlorine-containing polymers such as chlorinated polyethylene, chlorinated polypropylene, and chlorinated rubber can be given.

Examples of the plasticizer include an ester plasticizer such as a phthalate ester plasticizer and an adipic ester plasticizer, a polyester plasticizer, a phosphate ester plasticizer, an epoxy plasticizer, a chlorine plasticizer, and a tetrahydroplasticizer. Examples include phthalic acid plasticizers, azelaic acid plasticizers, sebacic acid plasticizers, stearic acid plasticizers, citric acid plasticizers, trimellitic acid plasticizers, and pyromellitic acid plasticizers.

These plasticizers are vinyl chloride resins 10
1 to 100 parts by weight, particularly preferably 20 parts by weight, per 0 parts by weight
Should be used at ~ 80 parts by weight. By using the plasticizer in the above amount, the blending and dispersion of the polyhydric alcohol partial ester surfactant into the vinyl chloride resin is facilitated, and the surface modification of the vinyl chloride resin composition is also easily performed. Become like

In the present invention, a polyhydric alcohol partial ester derived from a polyhydric alcohol and a higher fatty acid is used. As the polyhydric alcohol, sorbitan, pentaerythritol, trimethylolpropane, glycerin and the like are used alone or in combination of two or more. on the other hand,
As the higher fatty acid, a saturated or unsaturated fatty acid having 10 to 22 carbon atoms, particularly 14 to 18 carbon atoms, for example, a saturated fatty acid such as capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid, margaric acid, stearic acid, and arachiic acid And unsaturated fatty acids such as lindelic acid, tuzunic acid, petroselinic acid, oleic acid, linoleic acid, linolenic acid and arachidonic acid. The fatty acids may of course be mixed fatty acids such as tallow fatty acids, coconut oil fatty acids and palm oil fatty acids. The above polyhydric alcohol partial ester surfactants can be used alone or in combination of two or more.

The above surfactant is a vinyl chloride resin 1
6 parts by weight or more, preferably 8 to 30 parts by weight with respect to 00 parts by weight
The vinyl chloride resin composition is used in an amount within the range of parts by weight, and is particularly preferably used in such a range that the contact angle with water of the formed vinyl chloride resin composition is reduced to 35 ° or less. If the blending amount is less than 6 parts by weight, the dripping property of the flowing water channel material hardly improves,
On the other hand, if it is used in an amount of more than 30 parts by weight, no particular advantage is obtained in practical use, and it is economically disadvantageous.

The vinyl chloride resin composition of the present invention can be blended with a known vinyl chloride resin compounding agent according to a known formulation. For example, the composition of the present invention includes known resins such as heat stabilizers, lubricants, fillers, coloring agents, weathering stabilizers, anti-aging agents, light stabilizers, ultraviolet absorbers, modifying resins and rubbers, and the like. The compounding agent can be compounded according to a formulation known per se.

The vinyl chloride resin composition of the present invention can be supplied to an extruder after pelletizing as required, and can be extruded into a flowing water channel material. The temperature of the extruder varies depending on the mixing ratio of the resin composition and the like, but is generally 130 to 1
A range of 80 ° C. is appropriate. The shape of the flowing water channel material may be any shape such as a flat plate, a sheet, a corrugated plate, a U-shaped, a V-shaped, and a U-shaped groove. The place where the main channel material is used is a place having a relatively small slope such as a corridor or a veranda, and is preferably used mainly in a place where the slope angle is 5 degrees or less.

[0021]

EXAMPLES Examples and comparative examples of the present invention will be described below.
The effect of the present invention will be clarified. Examples 1 to 3 and Comparative Examples 1 and 2 The following components were pelletized and supplied to an extruder to produce a flat plate and a flowing channel material. Then, the contact angle was measured with a flat plate, and the dripping property was evaluated with the drainage channel material. Those obtained with good results were left in an oven at 60 ° C. for 30 days, and the contact angle and the dropping property were evaluated again. Table 1 shows the obtained results.

<Blending> PVC (polyvinyl chloride) Degree of polymerization = 1000 100 parts Stabilizer (product name) One pack stabilizer (ca / Zn) 5 parts Plasticizer (product name) DOP Sekisui Chemical Co., Ltd. 35 parts Filler (Product name) Softon 1200 Bihoku Powder Chemical Industry Co., Ltd. 15 parts Auxiliary agent (product name) Kane Ace PA-20-F Kanegafuchi Chemical Industry Co., Ltd. 2 parts Interface modifier (product name) Leodor Super SP-L10 Kao Corporation 0-15 copies

[0023]

[Table 1] Evaluation criteria ○… good ×… poor

[0024]

According to the present invention, a surfactant composed of a partial ester of a polyhydric alcohol derived from a polyhydric alcohol and a higher fatty acid is selected and blended with a vinyl chloride resin in a specific amount. It is easy to mix with vinyl chloride resin and can improve the wettability of vinyl chloride resin to water and markedly improve the dropping property without impairing the moldability and excellent physical properties of vinyl chloride resin. it can. This vinyl chloride-based resin composition is excellent in the dripping property and its persistence, drains effectively even when the inclination angle is small, and is useful as a flow channel material in a place with a small inclination.

Claims (4)

[Claims] 1 to 100 parts by weight of a plasticizer and at least 6 parts by weight of a surfactant comprising a partial ester of a polyhydric alcohol derived from a polyhydric alcohol and a higher fatty acid per 100 parts by weight of a vinyl chloride resin. A vinyl chloride resin composition having excellent dripping properties, comprising: 2. The vinyl chloride resin composition according to claim 1, wherein the contact angle with water is 35 ° or less. 3. The vinyl chloride resin composition according to claim 1, which is a vinyl chloride resin having a degree of polymerization of 800 to 3000. 4. A flowing water channel material comprising the vinyl chloride resin composition excellent in dropping property according to claim 1 and used in a place where a gradient is small.