JPH03227353A - Building material made of resin - Google Patents

Abstract

PURPOSE:To provide a resin building material having excellent heat resistance, mechanical strength, dimensional stability, weather resistance, etc., and suitable for exteriors such as window frames by molding a resin composition comprising a specific post-chlorinated vinyl chloride resin component, a resin impact resistance-improving agent of multicomponent acrylic rubber, etc., in specific amounts, respectively. CONSTITUTION:A post-chlorinated vinyl chloride resin composition is molded into a resin building material, the post-chlorinated vinyl chloride resin comprising (A) 100 pts.wt. of a post-chlorinated vinyl chloride resin component comprising A1: 30-100wt.% of a post-chlorinated vinyl chlorinated vinyl chloride resin having a chlorine content of 60-72wt.% and A2: 0-70wt.% of one kind or more selected from a post-chlorinated vinyl chloride resin having a chlorine content of <=60wt.% and a vinyl chloride resin and satisfied with inequalities: 12<=X, Y<=2 and 60<=X<=68.5 (X is the average chlorine content of the post-chlorinated vinyl chloride resin component; Y is the average specific viscosity of the post- chlorinated vinyl chloride resin component), (B) 3-30 pts.wt. of a resin impact resistance-improving agent of multicomponent acrylic rubber and (C) 0.2-4 pts.wt. of low molecular weight polyethylene.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has excellent mechanical strength such as heat resistance, impact resistance and tensile strength, dimensional stability, weather resistance, and moldability, as well as colorability. Regarding resin construction materials mainly used outdoors such as window frames that have practical performance such as flame retardancy and low smoke emission, please refer to The present invention relates to a resin building material obtained by molding a post-chlorinated vinyl chloride resin composition comprising a specific amount of a multi-component acrylic rubber resin impact modifier (B) and a specific amount of low molecular weight polyethylene (C).

[Conventional technology]

Conventionally, resin building materials mainly used for outdoor use such as resin window frames have been made of vinyl chloride resin (PVC resin), which has relatively good properties such as mechanical strength, moldability, dimensional stability, and weather resistance. (hereinafter sometimes abbreviated as PVC) is often used. However, PvC has a drawback in heat resistance, so for example, when using a PVC window frame as an outside window exposed to direct sunlight, the surface temperature may exceed 80°C, especially in the summer.
There is a problem that it is difficult to use unless the temperature rises to a temperature higher than .degree. C. and causes thermal deformation, and the surface temperature is not increased to a white color. Furthermore, PVC is not sufficiently flame retardant and has problems with smoke generation in the event of a fire, making it difficult to use as a material for, for example, sizing materials for interior and exterior walls.

Recently, however, demand has begun to increase for building materials such as window frames, sashes, and sizing materials made of resin, as they are less prone to condensation and have better insulation and heat retention than aluminum building materials. Demand for materials in a wide variety of colors other than white, such as brown and brown, has increased, and materials with excellent flame retardancy and low smoke generation have also been required for fire prevention measures.

In order to solve these problems, construction materials such as window frames made of post-chlorinated vinyl chloride resin (hereinafter sometimes abbreviated as C-pvc) have become known. -PVC has disadvantages in moldability, impact resistance, etc.

In order to overcome these drawbacks of c-pvc, it has been proposed to incorporate various modifiers into c-pvc. For example, in Japanese Patent Publication No. 53-18230,
Impact resistance, heat resistance, hot water aging resistance obtained by intimately mixing 3 to 50 parts by weight of a specific multi-component acrylic rubber impact agent with 97 to 50 parts by weight of C-PVC with a chlorine content of 63 to 70%. c-pv with excellent durability, weather resistance and processability
c compositions.

However, the above proposal does not include any description of the use of the composition as a building material such as a window frame, and therefore there is of course no suggestion whatsoever regarding the necessary physical properties of a composition for molding building materials.

In addition, it is not easy to achieve a good balance of impact resistance, heat resistance, and processability in the above proposal, and in reality, the amount of impact agent compounded in each application is selected within a narrow range, and the processing conditions are also within a narrow range. must be limited to. For example, in an example of the proposal, 15 parts by weight of the multi-component acrylic rubber impact resistance agent of the proposal is based on 85 parts by weight of C-PVC with a chlorine content of 64% or more (about 15 parts by weight per 100 parts by weight of C-PVC). A composition containing 18 parts by weight) and other additives is described, but even when trying to mold this composition into building materials such as window frames, the molding processability such as extrusion molding is poor, and molding is difficult. In addition to poor product productivity, the resulting building materials also have problems with their appearance and have insufficient mechanical strength such as impact resistance. In addition, compositions in which the amount of the impact-resistant agent is increased in order to improve the impact resistance of the building materials to a satisfactory level, especially the impact resistance at low temperatures, have extremely low moldability. In addition, the resulting building materials were not satisfactory in terms of heat resistance.

In addition, blends of c-pvc, pvc and modifiers are also known; for example, Japanese Patent Application Laid-Open No. 59-108055 discloses excellent low-temperature falling weight impact resistance and excellent high-temperature internal hydraulic rupture resistance. A molding resin that exhibits improved properties such as excellent chemical resistance, excellent heat resistance, excellent weather resistance, and excellent practical durability, and that can exhibit unique properties that combine these excellent properties in a well-balanced manner. For the purpose of providing the composition [see below (
i) and (if) (i) 55 parts by weight to less than 70 parts by weight of post-chlorinated vinyl chloride resin (11) For a total of 100 parts by weight of more than 30 parts by weight to 45 parts by weight of vinyl chloride resin, the following (iii) ) and (iv
)(iii) Post-chlorinated polyethylene elastomer from 1 part to less than 6 parts by weight (iv) 1 part to 8 parts by weight of an elastomer selected from the group consisting of acrylic elastomers and MBS elastomers, provided that (iii) and ( The total amount of iv) is 2.5 parts by weight to 12 parts by weight.

"Post-chlorinated vinyl chloride molding resin composition" characterized by containing the following.

However, the above proposal does not contain any description or suggestion regarding the use of the composition for building materials mainly used for outdoor use such as window frames. A composition consisting of 35 parts by weight of PVC, 4 parts by weight of post-chlorinated polyethylene elastomer, 6 parts by weight of acrylic elastomer, 2 parts by weight of stabilizer and 2 parts by weight of lubricant) can be used to form building materials such as window frames. However, the resulting building materials were not necessarily satisfactory in terms of impact resistance, especially impact resistance at low temperatures, and were also not satisfactory in terms of heat resistance.

[Problems to be solved by the invention]

The present inventors have improved the problems with the conventional resin building materials, and have improved mechanical strength such as heat resistance, impact resistance, and tensile strength, dimensional stability, weather resistance, flame retardance, and low smoke emission. A window that has excellent practicality such as fire retardancy and moldability, as well as decorative properties such as the ability to be colored without softening or deforming due to temperature rises caused by direct sunlight, even if it is colored in a color other than white. As a result of conducting research to obtain resin construction materials mainly used for outdoor purposes such as frames, we found that CPVC with a specific composition
component, the average chlorine content of the C-PVC component is within a specified range, and the product of the average chlorine content (weight %) and the average specific viscosity of the C-PVC component is specified. By using a c-pvc composition comprising a c-pvc component having a range of The present invention was completed by discovering that it is possible to mold an excellent resin building material that solves all problems.

[Means for solving problems]

The present invention provides a resin building material formed by molding a post-chlorinated vinyl chloride resin composition, in which the composition has the following properties (A) to (
C), (A) The following (a) and (b), (a) One or more resins selected from post-chlorinated vinyl chloride resins with a chlorine content of 60 to 72% by weight 30 to 10
0% by weight, and (b) 0 to 70% by weight of one or more resins selected from post-chlorinated vinyl chloride resins and vinyl chloride resins with a chlorine content of less than 60% by weight, and has the following formula: Ioo parts by weight of the chlorinated vinyl chloride resin component that satisfies the following: L2≦X−Y≦22 and 60≦X≦68.5 (B)
A post-chlorinated vinyl chloride resin composition containing an average chlorine content (parts by weight) of a multicomponent acrylic rubber resin component, and (C) 0.2 to 4.0 parts by weight of low molecular weight polyethylene. The present invention relates to a resin building material characterized by the following.

The present invention will be explained in detail below.

Post-chlorinated vinyl chloride resin (C-PVC) used in the present invention
) Component (A) is one or more resins selected from the following (a) and (b), (a) post-chlorinated vinyl chloride resin with a chlorine content of 60 to 72% by weight, 30 to 100% by weight. , and (b) 0 to 70% by weight of one or more resins selected from post-chlorinated vinyl chloride resins and vinyl chloride resins with a chlorine content of less than 60% by weight, and satisfies the following formula: It is something.

12≦x-Y≦22 and 60≦x≦68.5 (a) above
The c-pvc used in (b) can be produced by appropriately adjusting the chlorination conditions in a known method, for example, a method in which PvC powder is chlorinated in a gas phase or suspended in water. can.

The C-PVC of (a) above needs to have a chlorine content of 60 to 72% by weight, and when component (b) is not used, the chlorine content is 60 to 68.5% by weight, particularly 63 to 68% by weight. weight%
On the other hand, when component (b) is used, it is preferably 63 to 72% by weight, particularly 65 to 68% by weight. If the chlorine content of component (a) exceeds the upper limit, the melt viscosity of the resulting C-PVC composition tends to become too high, resulting in insufficient moldability; If it is too small (below the lower limit), the heat resistance of the resulting molded building material tends to be insufficient, which is not preferable. In addition, the specific viscosity ('711F) of (a) is approximately 0
．． It is preferably 17 or more, and particularly preferably 0.2 to 0.3 when component (b) is used. In addition,
Specific viscosity is measured according to JIS K-6721. The c-pvc used as the component (a) may be used alone as one type of resin, or may be used as a mixture of two or more types of resins having different chlorine contents and/or specific viscosities. .

The component (b) is CP with a chlorine content of less than 60% by weight.
One or more resins selected from VC and PvC,
Preferably, one or more types of PvC are used. The specific viscosity of component (b) is preferably about 0.17 or more, particularly 0.17 to 0.3. The component (b) also contains less than 60% by weight of c-
One type of resin from PVC or PvC may be used alone, or two or more types of these resins having different chlorine contents and/or specific viscosities may be used as a mixture.

The c-pvc component (A) comprises the component (a) and (b).
) component, and the mixing ratio of component (a) and component (b) is 1 in total of component (a) and component (b).
00% by weight, component (a) 30 to 100% by weight,
Preferably 50 to 100% by weight, more preferably 60 to 100% by weight
100% by weight, particularly preferably 70-100% by weight, component (b) 70-0% by weight, preferably 50-0% by weight, more preferably 40-0% by weight, particularly preferably 30-0% by weight. It is. (b) If the amount of the component used is too large, exceeding the upper limit, the excellent performance of the resulting molded building material, such as heat resistance, flame retardance, and low smoke emission, may be impaired, which is undesirable. .

The c-pvc component (A) needs to satisfy the following relational expression, where X is the average chlorine content (wt%) and Y is the average specific viscosity (η82).

12≦X-Y≦22 preferably 15≦X-Y≦1960
≦X≦68.5 Preferably 63≦X≦68 The above average chlorine content ... x, ..., When the weight percent of each resin in the total 100 weight percent of components (a) and (b) is W,, W, ..., it is calculated according to the following formula. .

In addition, the average specific viscosity (η5p) Y is the component (a) consisting of one or more types of C-PVC having the specific chlorine content, or the component (a) and one or more types of the component (b). This is the value obtained by measuring the mixed resin component according to the method of JIS K-6721.

If the value of X-Y is too small (less than the lower limit), the resulting building material tends to have insufficient properties such as heat resistance, flame retardance, and low smoke emission, which is undesirable. If it is too large, molding processability may deteriorate, which is not preferable.

The vinyl chloride resin used in the production of the c-pvc of the components (a) and (b), and also used as the component (b), may be a vinyl chloride homopolymer,
A vinyl chloride-based copolymer of vinyl chloride and another copolymerizable monomer may be used, but when a copolymer is used, the content of the other copolymerizable monomer is 100 vinyl chloride units. 15 parts by weight or less, preferably 6 parts by weight
It is preferable that the amount is less than parts by weight. Other copolymerizable monomers include, for example, vinyl esters such as vinyl acetate, vinyl propionate, and vinyl laurate; acrylic esters such as methyl acrylate, ethyl acrylate, and butyl acrylate; methyl methacrylate;
Methacrylic acid esters such as ethyl methacrylate;
Maleic acid esters such as dibutyl maleate and diethyl maleate; Fumaric acid esters such as dibutyl fumarate and diethyl fumarate: vinyl methyl ether,
Vinyl ethers such as vinyl butyl ether and vinyl octyl ether; Cyanide vinyls such as acrylonitrile and methacrylate; Olefins such as ethylene, propylene, and D-butene; Vinylidene halides other than vinyl chloride such as vinylidene chloride and vinyl bromide or vinyl halides; and the like.

In the c-pvC composition used to mold the resin building material of the present invention, a multi-component acrylic rubber impact modifier is used as component (B). The multi-component acrylic rubber resin is a multi-component resin obtained by graft polymerizing monomers such as methyl methacrylate, styrene, acrylonitrile, etc. to a copolymer rubber mainly composed of acrylic acid esters. The method for producing this multi-component resin is already known, for example, Japanese Patent Publication No. 51-5674, Japanese Patent Publication No. 51-28117,
It can be produced by the methods described in JP-A-50-88168, JP-A-50-88169, JP-A-50-98951, and the like. The manufacturing method will be explained in more detail using an example.

The acrylic ester that is the main component of the copolymer rubber contains at least 8 acrylic acid alkyl esters or methacrylic acid alkyl esters in which the alkyl group has 2 to 8 carbon atoms.
At first, an aqueous dispersion of a rubbery copolymer is prepared by using 0% by weight or more and reacting it with a copolymerizable monovinylidene compound and a polyfunctional crosslinking agent. Next, a methacrylic acid alkyl ester having an alkyl group having 1 to 4 carbon atoms, a vinyl aromatic compound, an unsaturated nitrile, and All or a mixture of 2 to 3 monomers containing a monovinylidene group copolymerizable with these monomers 20-8
A multicomponent resin is obtained by graft polymerizing 0 parts by weight.

The thermal cyclohexanone insoluble content of the multi-component acrylic rubber impact modifier, component (B), is preferably 30% by weight or more, more preferably 50% by weight or more, particularly 80% by weight or more. It is preferable that the insoluble content is at least the lower limit because the resulting building material will have excellent mechanical strength such as breaking strength and impact resistance, especially at low temperatures.

The insoluble content is measured by immersing the impact modifier in cyclohexanone at 50°C with stirring for 24 hours, filtering off the insoluble content, and drying at 100°C for 2 hours under reduced pressure of 5 Torr or less. .

One type of such impact resistance modifier may be used, or two types may be used.
A combination of two or more species may be used, and the blending amount is 3 parts by weight per 100 parts by weight of the c-pvc component (A).
-30 parts by weight, preferably 10-20 parts by weight. If this amount is less than the lower limit, it will be difficult to sufficiently improve impact resistance and processability, while if it exceeds the upper limit, heat resistance and mechanical strength will tend to decrease, which is not preferable.

The c-pvc composition used in the present invention further comprises (C)
Contains low molecular weight polyethylene as a component. (C)
The ingredients act as processing aids during molding, but
Compared to the use of other processing aids, it has the same or better effect of improving molding processability, and although molded products with beautiful appearance can be obtained, the decrease in heat resistance and impact resistance is small. It has outstanding advantages.

The weight average molecular weight of the above component (C) is generally 1000 to 6.
000, preferably 2000 to 4000.

It is preferable that the molecular weight of the component (C) is within this range because it provides a good balance of physical properties between moldability and impact resistance. (C
The blending amount of the component (A) (7) is 0.2 to 4 parts by weight, preferably 0.5 to 2.5 parts by weight, based on 100 parts by weight of the C-PVC component (A) (7). If the blending amount of component (C) is too small (less than the lower limit), the molding processability will be poor and the appearance of the resulting molded building material will be unsatisfactory, which is undesirable. If the amount is too large, the impact resistance of the resulting molded product tends to decrease, which is not preferable.

The c-pvc composition used in the present invention includes the above (A) to (
C) In addition to the ingredients, various additives such as stabilizers,
Lubricants, antioxidants, fillers, ultraviolet absorbers, colorants, etc. can be added. Examples of the above-mentioned stabilizers include lead-based stabilizers such as tribasic lead sulfate and dibasic lead phosphite; for example, butyltin malate, butyltin laurate, butyltin mercaptide, octyltin malate, and octyltin mercaptide. and tin-based stabilizers such as methyltin mercaptide; and lubricants include metal soaps such as lead stearate, cadmium stearate, zinc stearate, calcium stearate, and barium stearate; for example, fatty acids , fatty acid amides, fatty acid esters, etc.; for example, aliphatic ketones, aliphatic alcohols; etc. Antioxidants include, for example, phenyl-a-naphthylamine, phenyl β-naphthylamine, aldol-α-naphthylamine. naphthylamine series such as p-isopropoxy-diphenylamine, N,N'-diphenyl-propylene diamine; for example, polymers of 2,2,4-trimethyl-1,2-dihydroquinone, 6- Nitoxy2.2.4-trimethyl-1
, 2-dihydroquinoline; for example, 1
-oxy-3-methyl-4-isopropylbenzene, 2
16-dibutyl-4-methylphenol; for example, 4,4'-dihydroxydiphenyl,
Hindered bisphenol, tris-(2-methyl-4
Hydroxy-5-7-butylphenyl polyphenols; for example, 4,4°-thiobis-(6
-t-butyl-3-methylphenol); Examples of fillers include calcium carbonate, aluminum silicate, aluminum hydroxide, magnesium carbonate, magnesium hydroxide, diatomaceous earth, wood flour, Examples of ultraviolet absorbers include salicylic acid derivatives such as phenyl salicylate and p-octylphenyl salicylate; benzophenones such as 2,4-dihydroxybenzophenone and 2-hydroxy-4-methoxybenzophenone; For example, 2-(2°-hydroxy-5°-methyl-phenyl)benzotriazole, 2-(2′-hydroxy-3°,5′-d-7-butyl-phenylriazole system; For example, resorcinol monobenzoate , 2,4-di-t-butylphenyl-3.5-di-7-butyl-4-hydroxybenzoate, methyl 0-benzoylbenzoate;
Inorganic pigments such as titanium oxide, lead white, lithopone, pallite, carbon black, cadmium red, Bengara, silver vermillion, cadmium yellow; for example, azo pigments, nitroso pigments, nitro pigments, basic dye lakes, phthalocyanine pigments, etc. Examples include organic pigments.

The amount of these additives to be added can be arbitrarily selected within a range that does not impair the purpose of the present invention, but usually based on 100 parts by weight of the above-mentioned components (A) and (B). , stabilizer is 5 parts by weight or less, lubricant is 0.5 to 5 parts by weight, antioxidant is 2 parts by weight or less, filler is 10 parts by weight or less, ultraviolet absorber is 2 parts by weight or less, colorant is 3 parts by weight. Selected within the range below.

The composition used in the present invention is prepared by mixing the components (A) to (C) and various additives used as necessary with a high-speed mixer such as a Henschel mixer or a super mixer.
Ribbon blender, Banbury mixer, continuous kneader
It can be prepared by putting it into a mixer such as a mixing roll or a grinder and mixing it uniformly at an appropriate temperature.

〔Example〕

EXAMPLES Next, the present invention will be explained in more detail with reference to examples, but the present invention is not limited to these examples in any way.

In addition, each physical property of the composition was evaluated according to the following method.

(1) Preparation of test piece The powdered compound was kneaded at 180°C for 7 minutes using an 8-inch roll mixer, and the mixture was mixed with a powdery compound of approximately 0% Obtain a sheet of 55 mm, then stack two or six of these sheets in alternating directions and press-form at 190°C to obtain a plate-like body with a thickness of 1 mm or 31001, respectively. Test pieces were cut out from each of the shaped bodies.

(2) Tensile strength A tensile test was conducted at room temperature in accordance with JIS K-6745, and the tensile strength and elongation were determined. The test piece is (1
) was cut out from a 3 mm thick plate.

(3) Impact resistance A Charpy impact test was conducted in accordance with JIS K-7111 to determine impact resistance. A test piece was cut out from the 3 mm thick plate prepared in (1).

For outdoor construction materials, this impact resistance value is 15kg-
It is desirable that it is at least cm/cm2.

(4) Heat resistance In accordance with JIS K-7206, a Vicat needle temperature test was conducted under a load of 5 kg to determine heat resistance. The test piece was cut out from the 1+nn+thick plate prepared in (1).

For outdoor construction materials, it is desirable that the Vicat needle temperature is 90°C or higher.

(5) Melt viscosity, sustained heat stability By filling 65 g of the powdered compound into the rotor tank of a Brabender Plastograph machine whose temperature was pre-controlled to 200'C, and rotating the kneader at 30 rpm, The compound is melt-kneaded, and the melt resistance value (torque, kg-mm) in a stable state is taken as the melt viscosity value,
Further, the time (minutes) from the start of gelation to the start of thermal decomposition of the compound was taken as the value of sustained thermal stability. From the viewpoint of moldability, the melt viscosity is 4.0 kg-mm or less,
A sustained thermal stability of 20 minutes or more is desirable.

(6) Extrusion moldability Prepare a powdered compound using a 2001 Henschel mixer, and mix it at a cylinder temperature of 160°C to 180°C.
A profile molded product was molded using a two-wheeled directional extruder (0M55, manufactured by Cincinnati Milacron Co., Ltd.) whose die temperature was adjusted to 180 to 190°C, and the extrusion moldability (load) at this time was measured.
The appearance (surface condition, discoloration due to thermal decomposition) of the molded product was evaluated according to the following criteria.

Excellent extrusion moldability and molded product appearance: O Good, 0 7I Fairly poor △ Difficult to extrude, × Poor: xx (7) Weather resistance 55 cut from the 3 mm thick plate made in (1)
A test piece of mm x 125 mm is used. After the test piece was irradiated for 500 hours with a weatherometer that sprayed the black panel at a temperature of 63±2°C for 18 minutes every 180 minutes, changes in the surface condition were observed and evaluated according to the following criteria.

Almost no change 0 Slight discoloration O Discoloration or chalking Δ Discoloration, rough skin, or severe chalking Then, the residual tensile strength and residual elongation after the test were calculated and evaluated.

(8) Flame retardant and smoke emitting property 20 pieces cut from a 3 mm thick plate made in (1)
A propane gas burner (
Immediately after a fire (40 mmφ x 250 mm flame length) was emitted for 2 minutes as shown in Figure 1, the flammability of the specimen was observed and evaluated using the following criteria. The surface temperature of the test piece at this time was about 840°C.

(Flame retardancy judgment) Immediately self-extinguishing 0 Self-extinguishing within 10 seconds 0 Self-extinguishing within 10-30 seconds 6 Burning for more than 30 seconds × (Smoke emitting judgment) Very little smoke ◎ Little smoke ○ Smoke 1 more haze Δ More smoke
'711F) 0.27577) 100 parts by weight of post-chlorinated vinyl chloride resin (C-PVC), multi-component acrylic rubber-based impact modifier with heat cyclohexanone insoluble content of 90% by weight or more as component CB [Metablen MS-51, manufactured by Mitsubishi Rayon Co., Ltd.], weight average molecular weight 2 as component (C)
000 low molecular weight polyethylene (AC-6A, manufactured by Allied Chemical) 1.0 parts by weight, 3.0 parts by weight of butyltin malate as a stabilizer/lubricant, 1 part by weight of stearyl alcohol
．． 5 parts by weight of barium stearate, 1.0 parts by weight of barium stearate, and 1.5 parts by weight of titanium oxide as a pigment were mixed at 120°C for 15 minutes using a sieve machine, and then taken out and cooled to obtain a powdered c-pvc composition. was prepared, and various physical property tests were conducted on this composition. The composition of this composition is shown in Table 1.
Moreover, the test results are shown in Table 2.

Examples 2 to 3 and Comparative Examples 1 to 2 Powdered c-pvc compositions were prepared in the same manner as in Example 1, except that the amount of component (B) was changed or the component (B) was not used. Various physical property tests were conducted on this composition. The composition of this composition is shown in Table 1, and the test results are shown in Table 2.

Examples 4 to 5 In Example 1, the CB) component had a thermally cyclohexanone insoluble content of about 65% by weight [Metablen W-5].
29, manufactured by Mitsubishi Rayon Co., Ltd.] and about 80% by weight [Kane-Riki FM, manufactured by Kanebuchi Chemical Industry Co., Ltd.]. Various physical property tests were conducted on this composition. The composition of this composition is shown in Table 1, and the test results are shown in Table 2.

Example 6 and Comparative Examples 3 to 4 Powdered c-pvc compositions were prepared in the same manner as in Example 1, except that the amount of component (C) was changed or component (C) was not used. Various physical property tests were conducted on this composition. The composition of this composition is shown in Table 1, and the test results are shown in Table 2.

Examples 7 to 8 In Example 1, component (C) had a weight average molecular weight of 4000 (Mitsui Hiwax 410P, manufactured by Mitsui Toatsu Chemical Co., Ltd.) and 1100 (AC-702, manufactured by Allied Chemical Co., Ltd.). A powdered c-pvc composition was prepared in the same manner as in Example 1, except that the same procedure was used as in Example 1, and various physical property tests were conducted on this composition. The composition of this composition is shown in Table 1, and the test results are shown in Table 2.

Examples 9 to 11 and Comparative Example 5 Example 1 except that the type of component (A) is changed in Example 1, and the amount of component (C) is changed as necessary.
A powdered C-PVC composition was prepared in the same manner as above, and various physical property tests were conducted on this composition.

The composition of this composition is shown in Table 1, and the test results are shown in Table 2.

Example 12 In Example 1, the chlorine content as component (A) was 61.
8% by weight, 1. ．． 0.30 NOC-PVC 45% by weight and chlorine content 64.5% by weight, y711, 0.275 (
7) A powdered c-pvc composition was prepared in the same manner as in Example 1 except that a mixed resin consisting of 55% by weight of C-PVC was used, and various physical property tests were conducted on this composition. The composition of this composition is shown in Table 1, and the test results are shown in Table 2.

Example 13 In Example 1, the chlorine content as component (A) was 65.
4% by weight, 1. ．． Same as Example 1 except that a mixed resin consisting of 70% by weight of 0.21 C-PVC and 30% by weight of '711F0.46 C-PVC was used, and the amount of component (C) was 0.7 parts by weight. A powdered c-pvc composition was prepared, and various physical property tests were conducted on this composition. The composition of this composition is shown in Table 1, and the results are shown in Table 2.

Example 14 and Comparative Examples 6 to 7 In Example 13, a mixed resin using c-pvc with a different chlorine content and 'Zsp value and PvC with a different '7sp value from Example 13 as the component (A) was used. A powdered c-pvc composition was prepared in the same manner as in Example 13, except that the blending ratio of c-pvc and PVC was changed, and the blending amount of component (C) was further changed as necessary. Various physical property tests were conducted on the product. The composition of this composition is shown in Table 1, and the test results are shown in Table 2.

〔Effect of the invention〕

As is clear from the results of the Examples and Comparative Examples, the C-PVC composition used in the present invention has the excellent heat resistance, chemical resistance, weather resistance, and
While maintaining flame retardancy, it has particularly excellent impact resistance and moldability that have not been previously available, so window frames and resin-made products obtained by molding the composition. Resin construction materials such as Satsushi interior and exterior wall materials have a good balance of these properties, as well as thermal dimensional stability against temperature changes in summer and winter, and resistance to direct sunlight in summer even when colors other than white, especially dark colors, are used. It has outstanding properties such as being able to withstand temperature rises caused by sunlight, being able to be colored freely, being a heat insulator, and producing low smoke.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram of an apparatus used for flame retardancy and smoke generation tests in examples of the present invention. a... Flame spout b of propane gas burner
...Flame C...Test piece Note that the units of numerical values in the diagram are mm.

Claims (1)

[Claims] (1) A resin building material formed by molding a post-chlorinated vinyl chloride resin composition, in which the composition meets the following (A) to (C).
(A) The following (a) and (b), (a) 30 to 100% by weight of one or more resins selected from post-chlorinated vinyl chloride resins having a chlorine content of 60 to 72% by weight, and (b) Post-chlorinated vinyl chloride resin with a chlorine content of less than 60% by weight and 0 to 70% by weight of one or more resins selected from vinyl chloride resins, which satisfies the following formula: 100 parts by weight of vinyl chloride resin component, 12≦X・Y≦22 and 60≦X≦68.5 [where,
X is the average chlorine content (wt%) of the post-chlorinated vinyl chloride resin component, and Y is the average specific viscosity (@η_s_p@) of the post-chlorinated vinyl chloride resin component. ] (B) Multi-component acrylic rubber-based resin impact modifier 3 to 3
0 parts by weight, and (C) 0.2 to 4.0 parts by weight of low molecular weight polyethylene.