JPH1160884A - Resin composition for rain water gutter part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin compsn. for a rain water gutter part which possesses excellent impact resistance, heat resistance, mechanical strength, and weather resistance. SOLUTION: This resin compsn. for a rain water gutter part comprises: 100 pts.wt. vinyl chloride resin, 0.2 to 5 pts.wt. stabilizer, and 0.3 to 5 pts.wt. lubricant, wherein the vinyl chloride resin is obtd. by graft-copolymerizing 96 to 90 wt.% vinyl chloride monomer onto 4 to 10 wt.% acrylic copolymer obtd. by copolymerizing a monomer mixture comprising 100 pts.wt. mixture of 80 to 100 wt.% alkyl (meth)acrylate monomer, with the glass transition temp. of a homopolymer thereof being -140 to -20 deg.C, with 0 to 20 wt.% monomer, with the glass transition temp. of a homopolymer thereof being -20 to 150 deg.C, and 0.1 to 10 pts.wt. polyfunctional monomer. The average degree of polymn. of the vinyl chloride resin is 400 to 800.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition for gutter components having excellent impact resistance, heat resistance, mechanical strength and weather resistance.

[0002]

2. Description of the Related Art Vinyl chloride resin is a material excellent in mechanical strength, chemical resistance and the like, and thus has been conventionally used for various uses such as piping materials and building materials. One of the uses of such a vinyl chloride resin is a gutter component. Rain gutter components are required to have heat resistance and weather resistance enough to withstand direct sunlight, and also to have excellent impact resistance enough to withstand various impacts even with a small thickness. However, since vinyl chloride resins are inferior in impact resistance, various improvements have been made conventionally.

As a method of improving the impact resistance of a vinyl chloride resin, a method of blending a rubber component such as methyl methacrylate-butadiene-styrene copolymer (MBS) as a reinforcing agent is generally used. However, MBS
Since has a diene bond, when blended, the weather resistance decreases, and as a result, there have been problems such as a significant decrease in impact resistance after an exposure test and discoloration.

[0004] Japanese Patent Application Laid-Open No. 60-161449 discloses an acrylic modifier as a reinforcing agent used for applications requiring weather resistance. However, blending this will improve weather resistance,
In order to improve the impact resistance, a large amount is required to be added, and when added in a large amount, there is a problem that tensile strength and heat resistance are reduced.

[0005]

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a resin composition for a gutter component which is excellent in impact resistance, heat resistance, mechanical strength and weather resistance.

[0006]

According to the present invention, 100 parts by weight of a vinyl chloride resin, 0.2 to 5 parts by weight of a stabilizer and 0.1 part by weight of a lubricant are used.
A resin composition for gutter parts comprising 3 to 5 parts by weight,
The vinyl chloride resin has an alkyl (meth) acrylate monomer (a) having a glass transition temperature of −140 to −20 ° C. of 80 to 100% by weight, and a glass transition temperature of the homopolymer of −20 to 20 ° C. 100 parts by weight of a mixture of the monomer (b) at 150 ° C. and 0 to 20% by weight, and
96 to 90% by weight of a vinyl chloride monomer is grafted to 4 to 10% by weight of an acrylic copolymer obtained by copolymerizing a monomer mixture comprising 0.1 to 10 parts by weight of a polyfunctional monomer (c). It is obtained by copolymerization, the average degree of polymerization is 400 to 800
And a resin composition for gutter parts. Hereinafter, the present invention will be described in detail.

The resin composition for gutter components of the present invention comprises a vinyl chloride resin, a stabilizer, and a lubricant. The vinyl chloride resin is obtained by graft copolymerizing a vinyl chloride monomer with an acrylic copolymer. The acrylic copolymer is obtained by copolymerizing a monomer mixture consisting of an alkyl (meth) acrylate monomer (a), a monomer (b) and a polyfunctional monomer (c).

The alkyl (meth) acrylate monomer (a) has a homopolymer having a glass transition temperature of -140 to
It is at -20 ° C. Alkyl (meth) acrylates having a homopolymer having a glass transition temperature of less than -140 ° C are not industrially common, and if the homopolymer exceeds -20 ° C, the impact resistance is poor. Preferably, -10
0 to -40C.

The glass transition temperature of the homopolymer is -14.
The alkyl (meth) acrylate (a) at 0 to -20 ° C is not particularly limited.
n-propyl acrylate, isobutyl acrylate,
n-butyl acrylate, n-hexyl acrylate,
Examples thereof include 2-ethylhexyl acrylate, n-octyl methacrylate, n-decyl methacrylate, n-dodecyl methacrylate, and 2-acryloyloxyethyl succinic acid. These may be used alone or in combination of two or more.

The monomer (b) is used to adjust the glass transition temperature of the obtained acrylic copolymer to an appropriate value. The monomer (b) has a glass transition temperature of a homopolymer of −20 to 150 ° C. If the temperature is lower than −20 ° C., the glass transition temperature of the obtained acrylic copolymer cannot be appropriately adjusted, and
Since those exceeding 50 ° C. are not industrially common,
It is limited to the above range. Preferably, it is 40 to 120 ° C.

The above homopolymer has a glass transition temperature of -20.
The monomer (b) at a temperature of up to 150 ° C. is not particularly limited,
For example, methyl (meth) acrylate, ethyl (meth)
Acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth)
Acrylate, isobutyl (meth) acrylate, s-
Butyl (meth) acrylate, t-butyl (meth) acrylate, n-hexyl (meth) acrylate, cyclohexyl (meth) acrylate, lauryl (meth) acrylate, myristyl (meth) acrylate, palmityl (meth) acrylate, stearyl (meth) Alkyl (meth) acrylates such as acrylates; polar group-containing vinyl monomers such as 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, and 2-acryloyloxyethyl phthalic acid; styrene;
aromatic vinyl monomers such as α-methylstyrene and vinyltoluene; unsaturated nitriles such as acrylonitrile and methacrylonitrile; vinyl esters such as vinyl acetate and vinyl propionate. These may be used alone or in combination of two or more.

The above alkyl (meth) acrylate (a)
The mixing ratio of the monomer (b) is 0 to 20% by weight of the monomer (b) with respect to 80 to 100% by weight of the alkyl (meth) acrylate (a). If the proportion of the monomer (b) is more than 20% by weight, it is difficult to obtain impact resistance, so that the content is limited to the above range.
Preferably, the alkyl (meth) acrylate (a)
The monomer (b) 0 to 95 to 100% by weight is used.
5% by weight.

The polyfunctional monomer (c) is not particularly restricted but includes, for example, allyl methacrylate, divinylbenzene, diallyl phthalate, diallyl fumarate,
Trimethylolpropanol-based acrylates such as diethylene glycol di (meth) acrylate, ethylene glycol di (meth) acrylate, triethylene glycol (meth) acrylate, trimethylolpropane triacrylate, and ethyleneoxide-modified trimethylolpropane triacrylate; pentaerythritol Pentaerythritol-based acrylates such as tetraacrylate and dipentaerythritol hexaacrylate are exemplified. These may be used alone or in combination of two or more.

The compounding amount of the polyfunctional monomer (c) is as follows:
0.1 to 1 part by weight per 100 parts by weight of the mixture of the alkyl (meth) acrylate (a) and the monomer (b)
0 parts by weight. If the amount is less than 0.1 part by weight, the crosslinking ratio of the acrylic copolymer decreases, and the acrylic copolymer is destroyed by shearing during molding, so that the impact resistance decreases,
If the amount exceeds 10 parts by weight, the crosslinking ratio of the acrylic copolymer increases, and the elasticity is lost, so that the impact resistance is reduced. Preferably, it is 0.2 to 8 parts by weight.

The method for obtaining an acrylic copolymer by copolymerizing a monomer mixture comprising the above alkyl (meth) acrylate monomer (a), the above monomer (b) and the above polyfunctional monomer (c) is not particularly limited. However, examples thereof include an emulsion polymerization method and a suspension polymerization method. Among them, the emulsion polymerization method is preferred in consideration of the development of impact resistance.

In the emulsion polymerization method, an emulsifying dispersant is added for the purpose of improving the dispersion stability of the monomer mixture in the emulsion and efficiently performing the polymerization. The emulsifying dispersant is not particularly limited, and examples thereof include an anionic surfactant, a nonionic surfactant, a partially saponified polyvinyl alcohol, a cellulose dispersant, and gelatin.

In the above emulsion polymerization method, a polymerization initiator is used. The polymerization initiator is not particularly limited,
For example, water-soluble polymerization initiators such as potassium persulfate, ammonium persulfate, and hydrogen peroxide; organic peroxides such as benzoyl peroxide and lauroyl peroxide; azo initiators such as azobisisobutyronitrile; No.

In the above emulsion polymerization method, a pH adjuster, an antioxidant and the like may be used as necessary. The emulsion polymerization method is broadly classified into three, namely, a batch polymerization method, a monomer dropping method, and an emulsion dropping method, depending on the difference in the monomer addition method, but is not particularly limited.

The batch polymerization method refers to, for example, adding together pure water, the emulsifying dispersant, the polymerization initiator, and the monomer mixture into a jacketed polymerization vessel, and removing oxygen under a nitrogen stream. In this method, the mixture is sufficiently emulsified by stirring under a pressurized condition, and then the inside of the vessel is heated by a jacket to carry out polymerization.

The above monomer dropping method is, for example, a method in which pure water, the above-mentioned emulsifying dispersant, and the above-mentioned polymerization initiator are placed in a jacketed polymerization vessel, and under a condition of oxygen removal and pressurization under a nitrogen stream. First, the inside of the vessel is heated by a jacket, and then the above monomer mixture is added dropwise in a fixed amount to gradually polymerize.

The above-mentioned emulsion dripping method means, for example, that the above-mentioned monomer mixture, the above-mentioned emulsifying dispersant, and pure water are sufficiently emulsified by stirring to prepare an emulsifying monomer in advance, and then the pure monomer is put into a jacketed polymerization vessel. Water, and the above polymerization initiator is added, under a condition of oxygen removal and pressurization under a nitrogen stream, first heating the inside of the vessel with a jacket, and then polymerizing the emulsion monomer by dropping a predetermined amount at a time. is there.

The vinyl chloride resin constituting the resin composition for a gutter component of the present invention can be obtained by graft copolymerizing a vinyl chloride monomer with the acrylic copolymer.

The mixing ratio of the above-mentioned acrylic copolymer and the above-mentioned vinyl chloride monomer is as follows.
The vinyl chloride monomer 96 to 9 is added to 10% by weight.
0% by weight. When the blending ratio of the acrylic copolymer is less than 4% by weight, it is difficult to obtain sufficient impact resistance, and the blending ratio of the acrylic copolymer is 10% by weight.
If it exceeds, the mechanical strength such as bending strength and tensile strength decreases, so that it is limited to the above range. Preferably, the vinyl chloride monomer is 95 to 92% by weight based on 5 to 8% by weight of the acrylic copolymer.

The method for graft copolymerizing the vinyl chloride monomer with the acrylic copolymer is not particularly limited, and examples thereof include an emulsion polymerization method and a suspension polymerization method. Of these, the suspension polymerization method is preferred because the resin composition for gutter components of the present invention can be effectively obtained.

In the above suspension polymerization method, a dispersant and an oil-soluble polymerization initiator are used for the purpose of improving the dispersion stability of the acrylic copolymer and efficiently performing the graft copolymerization of the vinyl chloride monomer. Used.

The dispersant is not particularly restricted but includes, for example, methylcellulose, ethylcellulose, hydroxypropylmethylcellulose, partially saponified polyvinyl alcohol, gelatin, polyvinylpyrrolidone, starch,
And maleic anhydride-styrene copolymer. These may be used alone or in combination of two or more.

As the oil-soluble polymerization initiator, an organic peroxide polymerization initiator is preferably used because it is advantageous for graft copolymerization. The organic peroxide polymerization initiator is not particularly limited, and examples thereof include lauroyl peroxide, t
-Butyl peroxy pivalate, diisopropyl peroxy dicarbonate, dioctyl peroxy dicarbonate, t-butyl peroxy neodecanoate, α-cumyl peroxy neodecanoate and the like. These may be used alone or in combination of two or more.

In the above suspension polymerization method, a pH adjuster, a chain transfer agent, an antioxidant and the like may be used as necessary.

The above-mentioned suspension polymerization method specifically includes, for example,
It can be carried out as follows. Pure water, the acrylic copolymer, the dispersant, the oil-soluble polymerization initiator, and, if necessary, a polymerization degree regulator, etc. are charged into a polymerization vessel equipped with a stirrer and a jacket, and then a vacuum pump After the air in the polymerization vessel is exhausted, and the above-mentioned vinyl chloride monomer and another vinyl monomer as needed are added under stirring conditions, the inside of the polymerization vessel is heated by a jacket, thereby performing the process. .

Since the graft copolymerization of the vinyl chloride monomer with the acrylic copolymer is an exothermic reaction, the polymerization temperature can be controlled by cooling with a jacket.

After the completion of the graft copolymerization reaction of the vinyl chloride monomer with the acrylic copolymer, unreacted vinyl chloride monomer is discharged out of the vessel, and the obtained slurry is dehydrated and dried to obtain a slurry. A vinyl chloride resin can be obtained.

The average degree of polymerization of the vinyl chloride resin is 4
00 to 800. If it is less than 400, the mechanical strength and impact resistance of the molded article will be reduced, and if it is more than 800, the fluidity will be deteriorated and injection molding will be difficult, so it is limited to the above range. Preferably, it is 450-700.

The stabilizer used in the present invention is not particularly limited, and examples thereof include a heat stabilizer and a heat stabilizing aid. The heat stabilizer is not particularly limited, for example, dibutyltin mercapto, dioctyltin mercapto, dimethyltin mercapto, dibutyltin malate, dibutyltin malate polymer, dioctyltin malate, dioctyltin maleate polymer, dibutyltin laurate, dibutyl Organotin stabilizers such as tin laurate polymer; lead stabilizers such as lead stearate, dibasic lead phosphite, and tribasic lead sulfate; calcium-zinc stabilizer; barium-zinc stabilizer; barium -Cadmium-based stabilizers and the like. These may be used alone or in combination of two or more.

The heat stabilizing aid is not particularly restricted but includes, for example, epoxidized soybean oil and phosphate esters. These may be used alone or in combination of two or more.

In the resin composition for gutter parts of the present invention,
The amount of the stabilizer is 0.2 to 5 parts by weight based on 100 parts by weight of the vinyl chloride resin. If the amount is less than 0.2 parts by weight, the thermal stability at the time of molding is insufficient, and if it exceeds 5 parts by weight, the mechanical strength and the heat resistance are reduced. Preferably, it is 0.5 to 4 parts by weight.

The lubricant used in the present invention is not particularly limited, and examples thereof include an external lubricant and an internal lubricant. The external lubricant is used for the purpose of improving the sliding effect between the molten resin and the metal surface during molding. The external lubricant is not particularly limited, and examples thereof include waxes such as paraffin wax, polyolefin wax, ester wax, and montanic acid wax; and higher fatty acids such as stearic acid. These may be used alone or in combination of two or more.

The above-mentioned internal lubricant is used for the purpose of accelerating the gelation of the molten resin at the time of molding, reducing the flow viscosity and preventing the frictional heating between the resins. The internal lubricant is not particularly limited, and includes, for example, butyl stearate, uralyl alcohol, stearyl alcohol, epoxy soybean oil, monoglyceride, bisamide and the like. These may be used alone or in combination of two or more.

In the resin composition for gutter parts of the present invention,
The amount of the lubricant is 0.3 to 5 parts by weight based on 100 parts by weight of the vinyl chloride resin. If the amount is less than 0.3 part by weight, molding processing becomes difficult, and if the amount exceeds 5 parts by weight, the mechanical strength and heat resistance decrease, so that the amount is limited to the above range. Preferably, it is 0.5 to 4 parts by weight.

If necessary, additives such as processing aids, antioxidants, ultraviolet absorbers, light stabilizers, fillers and pigments may be added to the resin composition for gutter parts of the present invention. Good. The processing aid is not particularly limited, and includes, for example, an acrylic processing aid mainly containing methyl methacrylate having an average molecular weight of 100,000 to 5,000,000.

The antioxidant is not particularly limited.
For example, phenolic antioxidants and the like can be mentioned. The ultraviolet absorber is not particularly limited, and examples thereof include salicylate-based, benzophenone-based, benzotriazole-based, and cyanoacrylate-based ultraviolet absorbers. The light stabilizer is not particularly limited, for example,
Hindered amine light stabilizers and the like can be mentioned.

The filler is not particularly restricted but includes, for example, titanium oxide, calcium carbonate, talc, mica and the like. The pigment is not particularly limited and includes, for example, organic pigments such as azo-based, phthalocyanine-based, sulene-based and dye lake-based; oxide-based, molybdenum chromate-based, sulfide / selenide-based, and ferrocyanide-based. And inorganic pigments.

The method of mixing the above additives with the resin composition for gutter parts of the present invention is not particularly limited, and examples thereof include a method using hot blending and a method using cold blending.

The resin composition for gutter parts of the present invention is molded,
The method for forming the gutter component is not particularly limited, for example,
There is a method of molding using a conventionally known appropriate molding machine, and the molding is generally performed using an injection molding machine.

The gutter parts obtained by molding the resin composition for gutter parts of the present invention are not particularly limited. For example, eave gutters for draining rainwater from buildings; Funnel, angel, stop, joint, bend, elbow, joiner, socket, mass, etc.

[0045]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

Example 1 (1) Preparation of Acrylic Copolymer In a polymerization vessel equipped with a stirrer and a reflux condenser, 140 parts by weight of pure water and 1 part by weight of ammonium persulfate were added. Anionic emulsifier (Hitenol N-0
8, 1 part by weight of Daiichi Kogyo Seiyaku Co., Ltd.) 20% by weight of a pre-emulsion liquid composed of 1 part by weight, 99 parts by weight of n-butyl acrylate and 1 part by weight of trimethylolpropane triacrylate is added, and oxygen in the vessel is replaced with nitrogen. After that, the polymerization vessel was heated to 65 ° C. under stirring conditions. After reaching the exothermic peak due to the initial seeding reaction, the remainder of the pre-emulsion was added over 5 hours and kept at 65 ° C. After completion of the addition, the mixture was further heated and stirred for 1 hour to obtain an acrylic copolymer emulsion. The acrylic copolymer concentration in this emulsion was 29.6% by weight.

(2) Preparation of vinyl chloride resin Next, 150 parts by weight of pure water and the acrylic copolymer emulsion 2 were placed in a polymerization vessel equipped with a stirrer and a jacket.
1 part by weight, 0.2 parts by weight of partially saponified polyvinyl alcohol (Kuraray Povar L-8, manufactured by Kuraray Co., Ltd.), hydroxypropyl methylcellulose (Metroze 60SH50,
Shin-Etsu Chemical Co., Ltd.) 0.1 part by weight, 0.1 part by weight of t-butylperoxy-2-ethylhexanoate, and 0.03 part by weight of dilauroyl peroxide are added all at once, and then a vacuum pump Then, the air in the polymerization vessel was discharged, and 100 parts by weight of vinyl chloride monomer was further charged into the polymerization vessel under stirring conditions, uniformly mixed, heated by a jacket, and polymerization was started at a polymerization temperature of 72 ° C. . When the pressure in the polymerization reactor dropped to 9 kg / cm ² , the reactor was cooled to stop the reaction. Thereafter, the unreacted vinyl chloride monomer was removed outside the vessel, and further dehydrated and dried to obtain a vinyl chloride resin. The polymerization degree of the obtained vinyl chloride resin, and
The content of the acrylic copolymer in the resin was evaluated by the following method. The results are shown in Table 1.

Evaluation of Characteristics of Vinyl Chloride Resin (Degree of Polymerization) The average degree of polymerization of the resin was determined in accordance with JIS K6721. (Content of acrylic copolymer in vinyl chloride resin)
The content was determined according to JIS K 7229.

(3) Preparation of Resin Composition for Rain Gutter Parts Table 1 was used for 100 parts by weight of the obtained vinyl chloride resin.
Were mixed with each other to obtain a resin composition for gutter parts. In Table 1, “phr” means resin 100
It is a unit representing the blending amount (part by weight) with respect to part by weight.
The obtained resin composition for gutter parts was kneaded with a roll kneader at 190 ° C. for 3 minutes, and then 175 ° C. for 6 minutes at 75 kg /
Press molding was performed at a pressure of cm ² to obtain a plate having a thickness of 3 mm. Using this plate as a sample, the evaluation of each physical property was carried out by the following methods. The results are shown in Table 1.

(Tensile strength) A tensile strength test was carried out at 23 ° C. in accordance with JIS K 7113. In order to exhibit the function as a gutter component, 450 kg / cm ²
It is preferable that it is above.

(Vicat softening temperature) JIS K 720
6, a Vicat softening temperature test was performed. In addition,
To avoid thermal deformation due to direct sunlight irradiation, 80 ° C
It is preferable that it is above.

(Heat Aging) A heat aging test was conducted in a 190 ° C. oven in accordance with JIS K 7212. The time at which the sample turned black was measured. The sample was performed on the sheet after the roll kneading. In order to withstand high shear heat generation during injection molding, the heating time is preferably 40 minutes or more.

(Fluidity) Using a Koka type flow tester,
The outflow amount was measured under the conditions of 170 ° C., load 150 kg / cm ² , and 1φ × 10 mm. Since the gutter component is a thin-walled molded product, it is preferably at least 5 × 10 ⁻² cc / sec.

(Impact Resistance) A Charpy impact test at 23 ° C. was performed on a notched test piece in accordance with JIS K 7111. In addition, in order to eliminate cracks such as cracks in packing and transporting, the pressure is preferably 13 kg · cm / cm ² or more.

(Weather resistance) Impact resistance after irradiation with sunshine weatherometer for 500 hours (JIS K 7111)
Was measured. Note that the retention rate for 500 hours is preferably 50% or more.

Example 2 Example 1 was repeated except that the content of the acrylic copolymer and the degree of polymerization of the vinyl chloride resin were changed and the stabilizer was changed to lead.
The same was done. The results are shown in Table 1.

Comparative Example 1 The procedure of Example 1 was repeated except that a vinyl chloride homopolymer was used without adding the acrylic copolymer. The results are shown in Table 1.

Comparative Example 2 The procedure of Example 1 was repeated, except that 10 parts by weight of an acrylic reinforcing agent (Kaneace FM, manufactured by Kaneka Corporation) was added to the vinyl chloride homopolymer of Comparative Example 1. The results are shown in Table 1.

Comparative Example 3 The vinyl chloride homopolymer of Comparative Example 1 was replaced with methyl methacrylate-butadiene-styrene copolymer (MBS) (BT
A-III, manufactured by Kureha Chemical Industry Co., Ltd.) was carried out in the same manner as in Example 1 except that 7 parts by weight was added. The results are shown in Table 1.

Comparative Examples 4 to 7 The same procedures as in Example 1 were carried out except that the average degree of polymerization of the vinyl chloride resin or the content of the acrylic copolymer was as shown in Table 1. The results are shown in Table 1.

Comparative Examples 8 and 9 The same procedures as in Example 1 were carried out except that the amounts of stabilizers and lubricants were as shown in Table 1. The results are shown in Table 1.

In Table 1, dioctyltin mercapto (TM-188J, manufactured by Katsuta Kako) was used as a tin-based stabilizer, and tribasic lead sulfate (TL, manufactured by Sakai Chemical Industry) was used as a lead-based stabilizer. Exel T-95 (manufactured by Kao Corporation) as a monoglyceride-based lubricant, and Kaowax 220 (manufactured by Kao Corporation) as an ester-based lubricant.

[0063]

[Table 1]

[0064]

Since the resin composition for gutter parts of the present invention has the above-mentioned constitution, a gutter part having an excellent balance of impact resistance, mechanical strength, heat resistance and weather resistance can be obtained. .

Claims (1)

[Claims] 1. A resin composition for gutter parts comprising 100 parts by weight of a vinyl chloride resin, 0.2 to 5 parts by weight of a stabilizer, and 0.3 to 5 parts by weight of a lubricant. ,
Alkyl (meth) acrylate monomer (a) having a glass transition temperature of −140 to −20 ° C.
100% by weight, and the glass transition temperature of the homopolymer is -20.
100 parts by weight of a mixture with 0 to 20% by weight of the monomer (b) having a temperature of about 150 ° C.
Acrylic copolymer obtained by copolymerizing a monomer mixture consisting of 1 to 10 parts by weight, 4 to 10% by weight
On the other hand, a resin composition for gutter parts, which is obtained by graft copolymerizing 96 to 90% by weight of a vinyl chloride monomer, and having an average degree of polymerization of 400 to 800.