JPH0348223B2 - - Google Patents
Info
- Publication number
- JPH0348223B2 JPH0348223B2 JP57134110A JP13411082A JPH0348223B2 JP H0348223 B2 JPH0348223 B2 JP H0348223B2 JP 57134110 A JP57134110 A JP 57134110A JP 13411082 A JP13411082 A JP 13411082A JP H0348223 B2 JPH0348223 B2 JP H0348223B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- vinyl chloride
- resistance
- parts
- methylstyrene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 10
- 239000004609 Impact Modifier Substances 0.000 claims description 6
- 229920000800 acrylic rubber Polymers 0.000 claims description 5
- 229920000058 polyacrylate Polymers 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 9
- 238000004898 kneading Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Description
本発明は耐衝撃性、耐熱変形性、耐候性に優れ
た塩化ビニル系樹脂組成物に関するものである。
塩化ビニル系樹脂は、耐候性、耐薬品性、難燃
性などの優れた性質と有する反面、耐衝撃性、耐
熱変形性などに欠点を持つている。こうした欠点
を改良するため、従来種々の提案がなされてお
り、例えば耐衝撃性を改良する代表的な方法とし
ては、ABS樹脂あるいはMBS樹脂をブレンドす
る方法等があるが、耐候性に大きな欠点がある。
一方、耐候性を考慮して、塩素化ポリエチレ
ン、エチレン・酢酸ビニル共重合体に塩化ビニル
をグラフト重合せしめたグラフト共重合体、アク
リルゴム等の耐衝撃改良剤をブレンドする方法が
あるが、耐衝撃性、耐候性で満足するものは得ら
れるけれども、耐熱変形性が低下する。
一般に塩化ビニル系樹脂の耐候性を損なわず
に、耐衝撃性を改良し、同時に耐熱変形性を大巾
に向上させるポリマーブレンド系は知られていな
い。
本発明者等は鋭意検討した結果、塩化ビニル系
樹脂と、アクリル系耐衝撃改良剤と、α−メチル
スチレン−アクリロニトリル共重合体との三元混
合系にすることにより、耐衝撃性、耐候性、耐熱
変形性に優れた樹脂組成物が得られることを見出
した。
即ち本発明の組成物は、55ないし90重量部の塩
化ビニル系樹脂と、５ないし40重量部のアクリル
系耐衝撃改良剤と、５ないし40重量部のα−メチ
ルスチレン−アクリロニトリル共重合体とから成
り、該組成物を混合、混練、成形することによつ
て耐衝撃性、耐候性、耐熱変形性の良好な成形体
が得られる。
さらに本発明の組成物は、耐薬品性、難燃性に
も優れ、かつ真空成形性、射出成形性、押出成形
性等の成形性等に於いても優れているという特徴
を有する。
本発明に用いられる塩化ビニル系樹脂は、塩化
ビニル単独重合体のほか塩化ビニルを少くとも75
重量％以上含む共重合体であつても差支えない。
また塩化ビニル系樹脂の平均重合度は成形法に
よつても異なるが400ないし2000程度のものが一
般に用いられる。
アクリルゴム系耐衝撃改良剤はアクリルゴムを
ベースとした共重合体、例えば、C4〜C10のアル
キルアクリレートから選ばれた１種又は２種のア
クリレートに対しアクリロニトリル、スチレン、
メチルメタアクリレート等の１種又は、２種を共
重合した共重合体が用いられる。
α・メチルスチレン−アクリロニトリル共重合
体は90ないし60重量％のα・メチルスチレンと10
ないし40重量％のアクリロニトリルからなる共重
合体が用いられる。
本発明の組成物の成形加工にあたつては、塩化
ビニル系樹脂の加工に通常用いられている公知の
安定剤、滑剤、紫外線吸収剤、酸化防止剤等を適
宜添加し、また必要に応じて充填材の使用も可能
である。
該組成物の物性を十分に発揮さすためには、で
きるだけ均一に混練することが望ましく、混練方
法としてはロール混練、バンバリ−混練、押出機
混練等周知の方法がとられ、粉末から直接押出成
形することも可能である。
以下に実施例により本発明をさらに具体的に説
明するが本発明はこれらに限定されるものではな
い。
実施例 １
平均重合度1100のポリ塩化ビニル（住友化学工
業製、スミリツトSX−11）とアクリルゴム系
改質材（鐘淵化学製、カネエースFM）とα・
メチルスチレン／アクリロニトリル共重合体（単
量体比70：30）とを第１表の割合で配合し、鉛系
安定剤５重量部、TiO23重量部を添加し、190℃
の２本ロールで７分間混練した後、200℃で10分
間圧縮成形し、物性試験用シートを得た。
The present invention relates to a vinyl chloride resin composition that has excellent impact resistance, heat deformation resistance, and weather resistance. Although vinyl chloride resins have excellent properties such as weather resistance, chemical resistance, and flame retardancy, they have drawbacks such as impact resistance and heat deformation resistance. Various proposals have been made in the past to improve these drawbacks. For example, a typical method to improve impact resistance is to blend ABS resin or MBS resin, but this method has a major drawback in weather resistance. be. On the other hand, in consideration of weather resistance, there is a method of blending an impact modifier such as chlorinated polyethylene, a graft copolymer obtained by grafting vinyl chloride onto an ethylene/vinyl acetate copolymer, or acrylic rubber. Although satisfactory impact resistance and weather resistance can be obtained, heat deformation resistance is reduced. In general, there is no known polymer blend system that improves the impact resistance and at the same time greatly improves the heat deformation resistance of vinyl chloride resins without impairing their weather resistance. As a result of extensive studies, the present inventors have found that by creating a ternary mixed system of vinyl chloride resin, acrylic impact modifier, and α-methylstyrene-acrylonitrile copolymer, impact resistance and weather resistance are improved. It was discovered that a resin composition having excellent heat deformation resistance can be obtained. That is, the composition of the present invention comprises 55 to 90 parts by weight of a vinyl chloride resin, 5 to 40 parts by weight of an acrylic impact modifier, and 5 to 40 parts by weight of an α-methylstyrene-acrylonitrile copolymer. By mixing, kneading, and molding the composition, a molded article with good impact resistance, weather resistance, and heat deformation resistance can be obtained. Furthermore, the composition of the present invention is characterized by being excellent in chemical resistance and flame retardancy, and in moldability such as vacuum moldability, injection moldability, and extrusion moldability. In addition to vinyl chloride homopolymer, the vinyl chloride resin used in the present invention contains at least 75% vinyl chloride.
There is no problem even if the copolymer contains more than % by weight. Although the average degree of polymerization of the vinyl chloride resin varies depending on the molding method, a value of about 400 to 2000 is generally used. The acrylic rubber impact modifier is a copolymer based on acrylic rubber, for example, one or two acrylates selected from C4 to C10 alkyl acrylates, acrylonitrile, styrene,
One type of methyl methacrylate or a copolymer of two types thereof is used. The α-methylstyrene-acrylonitrile copolymer contains 90 to 60% by weight of α-methylstyrene and 10% by weight of α-methylstyrene.
A copolymer comprising from 40% to 40% by weight of acrylonitrile is used. When molding the composition of the present invention, known stabilizers, lubricants, ultraviolet absorbers, antioxidants, etc. commonly used in the processing of vinyl chloride resins are added as appropriate, and as necessary. It is also possible to use fillers. In order to fully exhibit the physical properties of the composition, it is desirable to knead it as uniformly as possible, and kneading methods include roll kneading, banbury kneading, extruder kneading, and other well-known methods. It is also possible to do so. The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited thereto. Example 1 Polyvinyl chloride with an average degree of polymerization of 1100 (Sumitomo Chemical Co., Ltd., Sumiritz SX-11), acrylic rubber modifier (Kanebuchi Chemical Co., Ltd., Kane Ace FM) and α.
Methylstyrene/acrylonitrile copolymer (monomer ratio 70:30) was blended in the ratio shown in Table 1, 5 parts by weight of lead-based stabilizer and 3 parts by weight of TiO 2 were added, and the mixture was heated at 190°C.
After kneading with two rolls for 7 minutes, compression molding was performed at 200°C for 10 minutes to obtain a sheet for physical property testing.
【表】
第１表から明らかなように、本発明の組成物
は、塩化ビニル樹脂、および塩化ビニル樹脂と衝
撃改良剤との２成分混合に比べ、衝撃強度、耐熱
変形性、高温時の伸び特性を大巾に向上させてい
る。
実施例 ２
実施例１で用いた組成物について耐候劣化後の
シヤルピー衝撃強度を測定した結果を第２表に示
す。[Table] As is clear from Table 1, the composition of the present invention has better impact strength, heat deformation resistance, and elongation at high temperatures than a vinyl chloride resin and a two-component mixture of a vinyl chloride resin and an impact modifier. The characteristics have been greatly improved. Example 2 Table 2 shows the results of measuring the Charpy impact strength of the composition used in Example 1 after weathering.
【表】
○Ｒ
注) ABS樹脂は住友ノーガタツク製、クララ
スチツク K〓3125
【table】
○R
Note) ABS resin is manufactured by Sumitomo Nogatatsuku, Clarastic K〓3125
Claims (1)
部の塩化ビニル系樹脂と(b)５ないし40重量部のア
クリルゴム系耐衝撃改良剤と(c)５ないし40重量部
のα−メチルスチレン90〜60重量％とアクリロニ
トリル10〜40重量％からなるα−メチルスチレン
−アクリロニトリル共重合体とより成る熱可塑性
樹脂組成物。1 100 parts by weight of the resin composition contains (a) 55 to 90 parts by weight of a vinyl chloride resin, (b) 5 to 40 parts by weight of an acrylic rubber impact modifier, and (c) 5 to 40 parts by weight of α. - A thermoplastic resin composition comprising an α-methylstyrene-acrylonitrile copolymer comprising 90 to 60% by weight of methylstyrene and 10 to 40% by weight of acrylonitrile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13411082A JPS5922952A (en) | 1982-07-30 | 1982-07-30 | Thermoplastic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13411082A JPS5922952A (en) | 1982-07-30 | 1982-07-30 | Thermoplastic resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5922952A JPS5922952A (en) | 1984-02-06 |
| JPH0348223B2 true JPH0348223B2 (en) | 1991-07-23 |
Family
ID=15120685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13411082A Granted JPS5922952A (en) | 1982-07-30 | 1982-07-30 | Thermoplastic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5922952A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60166337A (en) * | 1984-02-07 | 1985-08-29 | Sumitomo Chem Co Ltd | Sheet material for secondary molding |
| JPS60208345A (en) * | 1984-03-31 | 1985-10-19 | Kanegafuchi Chem Ind Co Ltd | Heat-resistant, flame-retardant and impact-resistant resin composition |
| JPS61126595A (en) * | 1984-11-26 | 1986-06-14 | キヤノン株式会社 | Active matrix circuit substrate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972341A (en) * | 1972-11-10 | 1974-07-12 | ||
| JPS5117960A (en) * | 1974-04-27 | 1976-02-13 | Toa Gosei Chem Ind | ENKABINIRUKEIJUSHISOSEIBUTSU |
| JPS5529567A (en) * | 1978-08-23 | 1980-03-01 | Kanegafuchi Chem Ind Co Ltd | Vinyl chloride resin composition |
-
1982
- 1982-07-30 JP JP13411082A patent/JPS5922952A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972341A (en) * | 1972-11-10 | 1974-07-12 | ||
| JPS5117960A (en) * | 1974-04-27 | 1976-02-13 | Toa Gosei Chem Ind | ENKABINIRUKEIJUSHISOSEIBUTSU |
| JPS5529567A (en) * | 1978-08-23 | 1980-03-01 | Kanegafuchi Chem Ind Co Ltd | Vinyl chloride resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5922952A (en) | 1984-02-06 |
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