JPS60192746A - Vinyl chloride resin molding and molding method - Google Patents

Abstract

PURPOSE:To obtain the titled molding having a low coefficient of linear expansion and excellent impact resistance and moldability, by pelletizing a mixture consisting of a vinyl chloride resin, mica, wood meal and a specified modifier and extruding the pellet. CONSTITUTION:A mixture consisting of 100pts.wt. vinyl chloride resin, 5-30pts. wt. mica having a particle size of 25mu, 5-50pts.wt. wood meal having a particle size of 40-200mu dried at 100 deg.C or above for 30min or longer and 5-20pts.wt. at least one modifier selected from among chlorinated PE, an ethylene/vinyl acetate copolymer and an acrylonitrile (or methyl methacrylate)/butadiene/ styrene copolymer is kneaded in a kneader and pelletized. The pellet is fed to a hopper dryer, mixed at 100 deg.C or above for 30min or longer, fed to a vented extruder and extruded under such conditions that the resin temp. is 175 deg.C or below.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to molded products having a small coefficient of linear expansion and excellent physical properties and appearance, especially wooden products such as rain gutters, decking materials, window frames, and other building materials. The present invention relates to a vinyl chloride resin molded product suitable for thin-walled molded products having a similar appearance, and a method for molding the same.

(Prior art) In recent years, molded products made of vinyl chloride resin, such as rain gutters made of hard vinyl chloride, have been increasingly used.
Rigid PVC rain gutters have a higher coefficient of linear expansion than metal rain gutters, and during use, changes in temperature may cause changes in longitudinal length, causing deformation or breakage at connections or fasteners. They also had the disadvantage that the parts that were directly exposed to sunlight were prone to thermal expansion and bending or waving.

Conventionally, for example, as described in JP-A No. 56-34741, (A) 95 to 70% by weight of vinyl chloride resin, (B) 5 to 30% by weight of mica, (A) + (B) However, a blend of copolymer resin containing 1% by weight or more of methyl methacrylate as a main component has been proposed, but the adhesion between the mixed mica and the vinyl chloride resin is poor, and the impact resistance of the molded product is affected. It had the disadvantage of poor physical properties.

Furthermore, as described in JP-A-51-67379, a thermoplastic resin containing wood flour has been proposed in which a small amount of defoaming substance is added, but gas is generated from the wood flour during molding. Since it is impossible to prevent the wood from drying, voids are formed around the wood powder, and the adhesion between the wood powder and thermoplastic resin is extremely poor, resulting in extremely low physical properties such as impact resistance of the molded product, and poor moldability. Unfortunately, the surface condition of the molded product was not smooth and the appearance was poor, and due to this, there was a drawback that it whitened within a short time (chalking) when used outdoors.

(Purpose of the Invention) In view of the above facts, as a result of intensive study, the inventor has determined that:
By adding a modifier that improves the adhesion between mica and wood flour and resin, the inventors discovered that the above-mentioned conventional drawbacks could be overcome and the present invention was developed. is a molded product with a wood-like appearance that has a small coefficient of linear expansion and is hard to cause thermal deformation, has excellent physical properties such as impact resistance, and has excellent moldability, and has a good surface condition, especially for rain gutters and decks. The purpose of the present invention is to provide a vinyl chloride resin molded product suitable for thin-walled molded products such as wood, window frames, and other building materials.

(Summary of the Invention) The summary of the present invention is as follows: 1. In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl. A vinyl chloride resin molded article (hereinafter referred to as "the molded article I") in which 5 to 20 parts by weight of at least one modifier selected from methacrylate-butadiene-styrene copolymers is dispersed. , 100 parts by weight of 2° vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer. and 5 to 2 parts of at least one modifier selected from methyl methacrylate-butadiene-styrene copolymer and methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate. A vinyl chloride resin molded article in which 1 to 5 parts by weight of at least one selected processing aid is dispersed (hereinafter referred to as "molded article 2 of the present invention")
, 3. In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, 0.3 to 2 parts by weight of defoaming agent, chlorinated polyethylene, ethylene-vinyl acetate copolymer. , acrylonitrile-butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer (both 1
A vinyl chloride resin molded article in which 5 to 20 parts by weight of a seed modifier is dispersed (hereinafter referred to as "molded article 3 of the present invention"),
4. In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, and 0.3 parts by weight of defoaming agent.
2 M parts and a small amount selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer (both one kind of A chloride prepared by dispersing 5 to 20 parts by weight of a modifier and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate. Vinyl resin molded product (hereinafter referred to as "molded product 4 of the present invention"), 5.1
5 to 50 parts by weight of wood flour dried at 00°C or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylic. Mixed with 5 to 20 parts by weight of at least one modifier selected from nitrile-butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer, and after kneading this mixture in a kneader. The crushed pieces or pellets are mixed in a hopper dryer at 100°C or higher for 30 minutes or more, and then extruded using a vent-type extruder at a resin temperature of 175°C or lower. (hereinafter referred to as "molding method 1 of the present invention"), 6. 100 ° C.
Wood flour dried for at least 30 minutes or more
The parts by weight are 100 parts by weight of vinyl chloride resin and 5 parts by weight of mica.
30 parts by weight and a small amount selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer (both 1
5 to 20 parts by weight of a seed modifier are mixed with 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate; After kneading the mixture in a kneader, form pulverized pieces or pelletize them, mix the pulverized pieces or pellets in a hopper dryer at 100°C or higher for 30 minutes or more, and then heat the resin to 175°C in a vent-type extruder. A method for molding a vinyl chloride resin molded product, characterized by extrusion molding under the following conditions (hereinafter referred to as "molding method 2 of the present invention"): 7. Wood flour dried at 100° C. or higher for at least 30 minutes or more 50 parts by weight,
100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 0.3 to 2 parts by weight of defoaming agent, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer and 5 to 20 parts by weight of at least one modifier selected from methyl methacrylate-butadiene-styrene copolymer, and the mixture is kneaded in a kneader and then made into pulverized pieces or pelletized. After mixing the crushed pieces or pellets in a hopper dryer at 100°C or more for 30 minutes or more,
Vinyl chloride resin Ti is characterized by being extruded using a vent-type extruder at a resin temperature of 175°C or less.
A method for molding molded products (hereinafter referred to as "molding method 3 of the present invention"), and 5 to 50 parts by weight of wood flour that has been dried at temperatures above 50°C for at least 30 minutes are added to 1 part by weight of a vinyl chloride resin.
0.00 parts by weight, 5 to 30 parts by weight of mica, and 0.00 parts by weight of a defoaming agent.
3 to 2 parts by weight, and at least one selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer.
5 to 20 parts by weight of a seed modifier are mixed with 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate; After kneading the mixture in a kneader, form pulverized pieces or pelletize them, mix the pulverized pieces or pellets in a hopper dryer at 100°C or higher for 30 minutes or more, and then heat the resin to 175°C in a vent-type extruder. The present invention relates to a method for molding a vinyl chloride resin molded product (hereinafter referred to as "Molding method 4 of the present invention"), which is characterized by extrusion molding under the following conditions.

(Structure of the Invention) The vinyl chloride-based 4M resin used in the molded articles 1 to 4 of the present invention and the molding methods 1 to 4 of the present invention include, for example, polyvinyl chloride (PVC), polyvinylidene chloride, and chlorinated polyvinyl chloride. (chlorinated PVC), among others, are preferably used.
Polyvinyl chloride (PVC) is particularly preferably used.

The mica to be used in the molded products 1 to 4 of the present invention and the molding methods 1 to 4 of the present invention preferably has a diameter of about 20 μm, and the surface is treated with a camping treatment agent such as epoxy silane. Surface-treated ones are preferably used.

The wood flour used in the molded products 1 to 4 of the present invention and the molding methods 1 to 4 of the present invention preferably has a diameter of 40 to 200 μm, and has a moisture content of 2% or less. used.

The modifier used in the molded products 1 to 4 of the present invention and the molding methods 1 to 4 of the present invention improves the adhesion between mica and wood flour and the resin by being added to the system. ,
It suppresses the voids that occur around wood flour and improves the physical properties such as impact resistance and strength of molded products. Copolymer (ABS) and methyl methacrylate-butadiene-
At least one selected from styrene copolymers (MBS) is used.

The processing aid used in the molded articles 2 and 4 of the present invention and the molding method 2.4 of the present invention is selected from methyl methacrylate-acrylonitrile-styrene copolymer (MAS) and methyl methacrylate (MMA). At least one of the above is used.

As the defoaming agent used in the molded article 3.4 of the present invention and the molding method 3.4 of the present invention, for example, a silicone-based defoaming agent is preferably used.

In the molded products 1 to 4 of the present invention and the molding methods 1 to 4 of the present invention, stabilizers and pigments may be used in combination in addition to those described above, as necessary.

In the molded products 1 to 4 of the present invention and the molding methods 1 to 4 of the present invention, mica, along with other components, is added to the vinyl chloride resin 10
By adding 5 to 30 parts by weight relative to 0 parts by weight, the coefficient of linear expansion of the molded product can be reduced without deteriorating moldability and impact resistance, making it less susceptible to thermal deformation due to temperature changes.

If mica is not added at all or if the amount added is less than 5 parts by weight per 100 parts by weight of vinyl chloride resin, a sufficient effect cannot be expected; If it is added, the moldability will deteriorate, the appearance of the molded product will not be smooth for 1 hour, and the impact resistance will deteriorate.

In the molded products 1 to 4 of the present invention and the molding methods 1 to 4 of the present invention, by adding 5 to 20 parts by weight of the modifier together with other components to 100 parts by weight of the vinyl chloride resin, the linear To improve physical properties such as impact resistance and rigidity of molded products without increasing expansion coefficient. If no modifier is added or only a small amount of less than 5 parts by weight is added,
A sufficient effect cannot be expected, and if a large amount exceeding 20 parts by weight is added, the coefficient of linear expansion will increase.

In the molded article 2.4 of the present invention and the molding method 2.4 of the present invention, the processing aid is added in an amount of 5 to 5 parts by weight to 100 parts by weight of the vinyl chloride resin, along with other components. To further improve the moldability of a molded article without increasing the expansion rate. If the processing aid is not added at all or if it is added in a small amount of less than 1 part by weight, sufficient effects cannot be expected, and if it is added in a large amount exceeding 5 parts by weight, the line of the molded product may The expansion rate will increase.

In molded product 3.4 of the present invention and molding method 3.4 of the present invention, wood flour is added by adding a defoaming agent in an amount of 0.03 to 2 parts by weight per 100 parts by weight of vinyl chloride resin. Minimize air bubbles as much as possible.

If the defoamer is not added at all or if it is added in a small amount of less than 0.03 parts by weight, a sufficient effect cannot be expected; if it is added in a large amount exceeding 2 parts by weight,
Not only does moldability deteriorate, but also the kneading properties of the resin deteriorate.
Physical properties such as impact resistance of the molded product deteriorate.

In molding methods 1 to 4 of the present invention, 5 to 50 parts by weight of wood flour dried at 100° C. or higher for at least 30 minutes or more, preferably 1 hour or more, is mixed with 100 parts by weight of vinyl chloride resin and 5 to 30 parts by weight of mica. Mix in a mixer with other ingredients. Preferably, the mixing is carried out under heat and at high speed. While kneading this mixture using a roll kneader, the mica is loosened and uniformly dispersed in the resin by its shearing force. The mixing conditions for the roll kneader are preferably roll temperature of 150 to 175°C, roll spacing of 1 to 2 minutes, and kneading time of 3 to 8 minutes. A sheet-like material is extruded from a roll kneader and the sheet-like material is pulverized. This crushed piece,
After mixing for more than 30 minutes at 100°C or higher in a hopper dryer, the resin temperature is 175°C using a hend type extruder.
A molded product is extruded under the following conditions. As for the extrusion conditions, it is preferable to select an extrusion machine so that the shear force is reduced as much as possible, and also to use a breaker with a small hole diameter so that the resin pressure shows a high value, and the resin pressure range is 130-170 kg/cJ, resin temperature 170
Preferably, the mold temperature is 180°C or less.

As the kneading machine, in addition to the SiJ roll kneading machine, an extruder with a large kneading force for producing pellets or the like may be used. (Margin below) (Effects of the present invention) The molded product 1 of the present invention contains 5 to 30 weight parts of mica IS, 5 to 50 weight parts of wood flour, chlorinated polyethylene, ethylene- At least one modifier selected from vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer 5
20 parts by weight are dispersed, so the linear expansion coefficient of the molded product is small and thermal deformation due to temperature changes does not occur, and the physical properties such as tensile strength and impact resistance are extremely excellent. , and has good moldability and a good surface condition of the molded product.
It has a woody appearance.

Molded article 2 of the present invention contains 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene, in 100 parts by weight of vinyl chloride resin. - 5 to 20 parts by weight of at least one modifier selected from styrene copolymer and methyl methacrylate-butadiene-styrene copolymer, and methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate Since it is made by dispersing 1 to 5 parts by weight of at least one processing aid selected from acrylates, the linear expansion coefficient of the molded product is small, making it difficult for thermal deformation due to temperature changes to occur. It also has extremely excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability, and the surface condition of the molded product is smooth and uniform, and it has a wood-like appearance.

The molded article 3 of the present invention contains 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, 0.3 to 2 parts by weight of a defoaming agent, chlorinated polyethylene,
5 to 20 parts by weight of at least one modifier selected from ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer are dispersed. Because the linear expansion wheel of the molded product is small, thermal deformation due to temperature changes does not occur. The molded product has a good surface condition and has a woody appearance.

The molded article 4 of the present invention contains 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, 0.3 to 2 parts by weight of a defoaming agent, chlorinated polyethylene,
5 to 20 parts by weight of at least one modifier selected from ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer; Since it is made by dispersing 1 to 5 parts by weight of at least one processing aid selected from acrylate-acrylonitrile-styrene copolymer and methyl methacrylate, the coefficient of linear expansion of the molded product is It is small and resistant to thermal deformation due to temperature changes, and has excellent physical properties such as tensile strength and impact resistance. It also has extremely good moldability, and the surface condition of the molded product is smooth and uniform, with a wood-like appearance. has.

In the molding method 1 of the present invention, 5 to 50 parts by weight of wood flour dried at 100°C or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene- Mixed with 5 to 20 parts by weight of at least one modifier selected from vinyl acetate copolymer, acrylonitrile-cyclodiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer; After kneading the mixture in a kneader, the mixture is made into pulverized pieces or pelletized, and the pulverized pieces or pellets are mixed in a humper dryer at 100°C or higher for 30 minutes or more, and then processed into resin using a Ghent type extruder. temperature 1
Since it is extruded under conditions of 75°C or lower, during molding, the moisture content of the wood flour is suppressed to within 2% and dispersed in the resin, minimizing the generation of gas. The voids generated in the molded product are kept extremely small, the adhesion between the wood powder and the resin is good, and the linear expansion coefficient of the molded product is small, preventing thermal deformation due to temperature changes.
It has extremely excellent impact resistance, good moldability, and a good surface condition of molded products, with a woody appearance.

In the molding method 2 of the present invention, 5 to 50 parts by weight of wood flour dried at 100°C or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene- 5 to 20 parts by weight of at least one modifier selected from vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer, and methyl methacrylate- Acrylic nitrile
The mixture is mixed with 1 to 5 parts by weight of at least one processing aid selected from styrene copolymer and methyl methacrylate, and the mixture is kneaded in a kneader and then formed into pulverized pieces or pelletized. The pieces or pellets are mixed in a hopper dryer at 100°C or higher for 30 minutes or more, and then extruded using a Hentlive extruder at a resin temperature of 175°C or lower, so the molded special wood powder has a moisture content. is suppressed to within 2% and dispersed in the resin,
The generation of gas is kept to an extremely low level, the voids that occur around the wood powder are kept very small, the adhesion between the wood powder and the resin is good, and the coefficient of linear expansion of the molded product is small, preventing thermal deformation due to temperature changes. Furthermore, it has extremely excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability, and the surface condition of the molded product is smooth and uniform, and has a woody appearance.

In the molding method 3 of the present invention, 5 to 50 parts by weight of wood flour dried at 100° C. or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, and 0.3 parts by weight of a defoaming agent. to 2 parts by weight, and at least one modification selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. After mixing with 5 to 20 parts by weight of the agent, this mixture is kneaded in a kneader and then formed into pulverized pieces or pelletized, and the pulverized pieces or pellets are mixed in a hopper trier at 100 ° C. or more for 30 minutes or more, Extrusion molding is performed using a vent-type extruder at a resin temperature of 175°C or less, so during molding, the moisture content of the wood flour is suppressed to within 2% and dispersed in the resin, resulting in the release of gas. The generation of voids around the wood powder is kept extremely small, the adhesion between the wood powder and the resin is good, and the coefficient of linear expansion of the molded product is small, making it difficult for thermal deformation due to temperature changes to occur. Moreover, it has excellent physical properties such as tensile strength and impact resistance, has good moldability, has a good surface condition of molded products, and has a wood-like appearance.

In the molding method 4 of the present invention, 5 to 50 parts by weight of wood flour dried at 100° C. or higher for at least 30 minutes, 100 parts by weight of a vinyl chloride resin, 5 to 30 M parts of mica, and 0.3 parts of a defoaming agent. to 2 parts by weight, and at least one modification selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. 5 to 20 parts by weight of the agent, and at least one selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate.
Mixing the seeds with 1 to 5 parts by weight of a processing aid, and kneading this mixture in a kneader, and then forming it into crushed pieces or pelletizing it,
This crushed pieces or pellets are put in a hopper dryer for 10 minutes.
After mixing at 0°C or higher for 30 minutes or more, extrusion molding is performed using a vent-type extruder at a resin temperature of 175°C or lower, so the moisture content of the wood flour is kept within 2% during molding. It is dispersed in the resin, suppressing the generation of gas to an extremely low level, suppressing the voids generated around the wood powder to an extremely small level, and ensuring good adhesion between the wood powder and the resin, making it possible to improve the quality of molded products. It has a small coefficient of linear expansion and does not undergo thermal deformation due to temperature changes, but it also has excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability, and the surface condition of the molded product is smooth and uniform. , has a woody appearance.

The present invention will be explained below with reference to Examples.

(Examples 1, 2, 5, 6.9 to 12) Wood flour in the formulations of Examples 1, 2, 5, 6.9 to 12 shown in Table 1.2 was dried at 100°C for 1 hour. After that, the mixture was mixed well with the vinyl chloride resin, mica, and other ingredients, and this mixture was kneaded for 5 minutes at 160°C using a roll kneader to form a sheet with a thickness of 1.2 ts. The crushed pieces were crushed to make 3-square pieces, and the crushed pieces were layered in a hopper dryer at 100°C for 1 hour, and then heated to a resin temperature of 170 to 170°C in a vent-type extruder and mold.
Extrusion was carried out at 5° C. to extrude a thin profiled product with a thickness of 1.2 fins. A test piece was cut out from the molded product, and its linear expansion coefficient, tensile strength, elongation, and impact strength were measured, and the adhesion between the mica and wood powder in the molded product and the resin was observed. The results are listed as Examples 1, 2, 5.6.9 to 12.
．． It is shown in Table 2.

(Examples 3.4, 7.8) After drying the wood flour in the formulations of Examples 3, 4, and 7.8 shown in Table 1.2 at 100°C for 1 hour, vinyl chloride resin, Mix well with mica and other ingredients, pelletize this mixture using an extruder for pellet production, layer the pellets in a hopper dryer at 100°C for 1 hour, and then use a vent type extruder and mold. Resin temperature at 17
Extrusion was carried out at a temperature of 0 to 175°C to extrude a thin profiled article with a thickness of 1.2 fins. Cut out a test piece from the molded product.1. The coefficient of linear expansion, tensile strength, elongation, and impact strength were measured, and the adhesion between the mica and wood powder in the molded product and the resin was observed. The results are shown as Example 3, 4.7.8.
It is shown in Table 1゜2.

(Comparative Examples 1 to 3) The formulations of Comparative Examples 1 to 3 in Table 3 were mixed well in a mixer, and the mixture was heated to a resin temperature of 180 to 1 in an extruder and mold.
Extrusion was carried out at 85° C. to extrusion mold a thin, irregularly shaped article with a thickness of 1.21 mm. Test pieces were cut out from the molded products, and the coefficient of linear expansion, tensile strength, elongation, and impact strength were measured. The results are shown in Table 3 as Comparative Examples 1 to 3.

The coefficient of linear expansion was measured using ASTM: D696. Tensile strength and elongation were measured according to JISA5706. The impact strength was measured according to JISA5400. The adhesion between the mica and wood powder in the molded product and the resin was determined by viewing the cross section of the test piece under an electron microscope and observing the state of voids around the mica and wood powder.

As is clear from Table 1.2, in Examples 1 to 4, the coefficient of linear expansion is small, and the physical properties such as impact resistance are improved in Comparative Example 2, in which mica and wood powder are dispersed. The moldability was improved compared to the value of No. 3, and it was possible to form a thin-walled molded product with a thickness of 1.2 mm, and the surface condition of the molded product was good.

In addition, in the cases of Examples 5 to 8, the coefficient of linear expansion is small, and the physical properties such as impact resistance are improved compared to Comparative Example 2.3 in which mica and wood powder are dispersed. , and the formability is 1
．． It was possible to mold a 2 mm thin molded product, and the surface condition of the molded product was smooth, uniform, and extremely good. or,
In Examples 9 and 10, the coefficient of linear expansion is small, and physical properties such as impact resistance are further improved, and thin-walled molded products with moldability of 1.2 fi can be formed. The surface condition of the molded product was good. In the case of Examples 11 and 12, the coefficient of linear expansion is small, and physical properties such as impact resistance are further improved, and thin-walled molded products with moldability of 1.2 W can be formed. The surface condition of the molded product was smooth and uniform, and was extremely good. In addition, in all cases of Examples 1 to 12, there was good adhesion between the mica and wood flour and the resin, with only very small voids being observed around the mica and wood flour.

As is clear from Table 3 (Comparative Example 1 has a significantly large coefficient of linear expansion and is easily deformed due to temperature changes, Comparative Examples 2 and 3 have poor formability and are thin-walled). It was not possible to form a molded product, and the physical properties such as impact resistance were so poor that it could not be put to practical use.Also, Comparative Example 2.3
In this case, the relationship between mica or wood powder and resin is good.Continued from Table 2, Table 3, Page 1 ■Int, CI,' Identification symbol Monthly 105:16 "Inner reference number U53-4F F F F" Two consecutive city official documents (spontaneous) December 12, 1980 Director-General of the Patent Office 1, Indication of the case 1982 4) li'I Application No. 50273 2, Title of invention Vinyl chloride resin molded products and their Forming method 3, relationship with the case to be amended Patent applicant postal code: 530 Address: Patent Department, 2-4-4 Nishitenma, Kita-ku, Osaka City
(06) 365-2181 TIEL, Patent Department, Tokyo
(03) 434-9552°C - Table Subject of amendment + l) Claims column of the specification.

(2) Detailed description of the invention in the specification.

5. Contents of the amendment + l) The scope of claims in the specification shall be amended as shown in the attached sheet.

(21 Specification, page 9, lines 7 to 8, page 9, 5th from the bottom)
line, page 9, line 3 from the bottom - line 2 from the bottom, page 10, line 8
Line ~ 9th line, 3rd line from the bottom on page 10, 1st line from the bottom on page 10 ~ 1st line on page 11, 10th line ~ 11th line on page 11,
Page 12, lines 5 to 6, page 12, lines 8, page 13, lines 4 to 5, page 13, first line from the bottom, page 14, lines 2 to 3, Page 15, 3rd line from the bottom - 2nd line from the bottom, 1st
Page 6, lines 3 to 4, page 21, lines 6 to 7, 21
2nd line from the bottom of the page - 1st line from the bottom, page 22, 2nd line, 2nd line
4th line from page 2, page 23, line 10, page 23, line 12
line ~ line 13, page 24, line 7~line 8, page 25, line 1
Line 0 to line 11, line 8 from the bottom of page 25, line 4 from the bottom of page 26, line 1 from the bottom of page 27, and line 2 of page 28
In the third line, 1 "Methyl methacrylate" should be corrected to "Methyl methacrylate".

(3) Line 1 from the bottom of page 9 of the specification, line 2 from the bottom of page 11,! Page 14, line 4, page 16, line 1, page 22, lines 3 to 4, page 23, line 7 from the bottom, page 25, line 7 from the bottom
In the 6th line from the bottom and the 4th line on page 28, the text 1 "Methyl methacrylate" has been corrected to "Polymethyl methacrylate".

(4) Specification, page 16, line 6, page 34, table 1 “Formulation”
MMAJ is corrected to [PMMAJ] in the 7th column of the ``Formulation'' column on page 35, the 7th frame of the ``Formulation'' column in Table 3 on page 36, and the 6th frame of the ``Formulation'' column of Table 3 on page 36.

a List of attached documents (1) Amended patent application + 1'f Document stating the scope of claims 1
5 to 3 parts of mica in 100 parts by weight of vinyl chloride resin according to the claims above.
5 to 50 parts by weight of wood flour, chlorinated polyethylene, ethyne-vinyl acetate copolymer, and acrylonitrile-butadiene copolymer.

5 to 3 mica in 100 parts by weight of λ vinyl chloride resin
0 parts by weight, 5 to 50 parts by weight of wood flour, and chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. 5 to 20 parts by weight of at least one type of modifier, and 1 to 5 parts by weight of at least one type of processing aid selected from among the above are dispersed.

& 5 to 3 mica in 100 parts by weight of vinyl chloride resin
0 parts by weight, 5 to 50 parts by weight of wood flour, 13 to 2 parts by weight of a defoaming agent, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acriphrenitrilocyclodiene-styrene copolymer, and methyl methacrylate. - A vinyl chloride resin molded article in which 5 to 20 parts by weight of at least one modifier selected from butadiene-styrene copolymers are dispersed.

5 to 3 parts of mica in 100 parts by weight of vinyl chloride resin
0 parts by weight, 5 to 50 parts by weight of wood flour, 3 to 2 parts by weight of defoaming agent o, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-getadiene-styrene copolymer, and methyl methacrylate. - 5 to 20 parts by weight of at least one modifier selected from butadiene-styrene copolymer, and 1 to 5 parts by weight of at least one processing aid selected from methyl meccrylate-acrylonitrile styrene copolymer. A vinyl chloride resin molded product made by dispersing parts by weight.

5. 5 to 50 parts by weight of Kugi powder dried at 100° C. or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, chlorinated polyethylene,
mixed with 5 to 20 parts by weight of at least one modifier selected from ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-doped diene-styrene copolymer;
After kneading this mixture in a kneader, it is made into pulverized pieces or pelletized, and the pulverized pieces or pellets are mixed in a hopper dryer at 100°C or more for 30 minutes or more, and then the resin humidity is A method for molding a vinyl chloride resin molded product, characterized by extrusion molding at a temperature of 175°C or lower.

6. 5 to 50 parts by weight of wood flour dried at 100°C or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, chlorinated polyethylene, ethylene-vinyl acetate, etc. 5 to 20 parts by weight of at least one modifier selected from acrylonitrile-butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer; and methyl methacrylate-acrylonitrile-styrene copolymer. The mixture is mixed with 1 to 5 parts by weight of at least one processing aid selected from polymethyl methacrylate, and the mixture is kneaded in a kneader and then made into pulverized pieces or pelletized, and the powdered sand pieces or A vinyl chloride resin characterized by mixing the pellets in a dryer at 100°C or higher for 30 minutes or more, and then extruding them in a vent-type extruder at a #1 fat temperature of 175°C or lower. Molding method for molded products.

7. 5 to 50 parts by weight of Kugi powder, dried at io o ℃ or higher for at least 30 minutes, and 100 parts by weight of vinyl chloride resin.
parts by weight, 5 to 30 parts by weight of mica, defoaming agent (L3 to 2 parts by weight, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene- The mixture is mixed with 5 to 20 parts by weight of at least one modifier selected from styrene copolymers, mixed in a mixing machine, and then crushed or pelletized into crushed pieces or pellets. A method for molding a vinyl chloride resin molded article, which comprises mixing in a hopper dryer at 100° C. or higher for 30 minutes or more, and then extrusion molding in a vent-type extruder at a resin temperature of 175° C. or lower.

8. 5 to 50 parts by weight of wood flour dried at 100°C or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, and 0.3 to 2 parts by weight of defoaming agent. , chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer5.
and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and polymethyl methacrylate, and the mixture is put into a kneader. After kneading, the crushed pieces are mixed and mixed. Vinyl chloride resin molding characterized by mixing crushed pieces or pellets in a hopper dryer at 100'C or higher for 30 minutes or more, and then extrusion molding in a vent-type extruder at a resin temperature of 175°C or lower. How to mold the product.

Claims (1)

[Claims] 1. 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile in 100 parts by weight of vinyl chloride resin. A vinyl chloride resin molded article comprising 5 to 2 Oi parts of at least one modifier selected from butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer dispersed therein. 2. In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer and 5 to 20 parts by weight of at least one modifier selected from methyl methacrylate-butadiene-styrene copolymer;
A vinyl chloride resin molded article comprising 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate. 3. In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, and 0.3 parts by weight of defoaming agent.
to 2 parts by weight, and at least one modification selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. A vinyl chloride resin molded article in which 5 to 20 parts by weight of the agent are dispersed. 4. In 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, 5 to 50 parts by weight of wood flour, and 0.3 parts by weight of defoaming agent.
to 2 parts by weight, and at least one modification selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. A vinyl chloride-based vinyl chloride-based material comprising 5 to 20 parts by weight of an agent and 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate. Resin molded product. 5. 5 to 50 parts by weight of wood flour dried at 100°C or higher for at least 30 minutes, 100 parts by weight of vinyl chloride resin, 5 to 30 M parts of mica, chlorinated polyethylene,
mixed with 5 to 20 parts by weight of at least one modifier selected from ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer, After kneading this mixture in a kneader, it is made into pulverized pieces or pelletized, and the pulverized pieces or pellets are mixed in a hopper dryer at 100°C or more for 30 minutes or more, and then in a vent type extruder at a resin temperature of 175°C. A method for molding vinyl chloride resin molded products, characterized by extrusion molding at temperatures below ℃. 6. 5 to 50 parts by weight of wood flour dried at 100°C or higher for 30 minutes or more, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, chlorinated polyethylene,
Ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer and methyl methacrylate
5 to 20 parts by weight of at least one modifier selected from doped diene-styrene copolymers; and at least one modifier selected from methyl methacrylate-°acrylonitrile styrene copolymers and methyl methacrylate. The mixture is mixed with 1 to 5 parts by weight of a processing aid, and the mixture is kneaded in a kneader and then formed into pulverized pieces or pelletized, and the pulverized pieces or pellets are mixed in a hopper dryer at 100°C or higher for 30 minutes or more. A method for molding a vinyl chloride resin molded product, which comprises extruding the molded product using a vent-type extruder at a resin temperature of 175° C. or lower. 7. 5 to 50 parts by weight of wood flour dried at 100°C or higher for 30 minutes or more, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, and 0.3 to 2 parts by weight of a defoaming agent. and at least one modifier selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. After kneading the mixture with 20 parts by weight in a kneader, the mixture is kneaded into pulverized pieces or pelletized, and the pulverized pieces or pellets are mixed in a hopper dryer at 100°C or higher for 30 minutes or more, followed by vent-type extrusion. A method for molding a vinyl chloride resin molded product, characterized by extrusion molding in a machine at a resin temperature of 175°C or lower. 8. 5 to 50 weight pieces of wood flour dried at 100°C or higher for at least 30 minutes. parts, 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of mica, and 0.3 to 2 parts by weight of defoaming agent.
parts by weight, and at least one modifier selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer 5 20 parts by weight and at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate.
This mixture is kneaded in a kneader and then made into pulverized pieces or pelletized, and the pulverized pieces or pellets are heated in a hopper dryer at 100°C or higher for 30 minutes.
1. A method for molding a vinyl chloride resin molded product, which comprises mixing for at least 1 minute and then extrusion molding using a vent-type extruder at a resin temperature of 175° C. or lower.