JPS60161449A - Vinyl chloride based resin composition - Google Patents

Vinyl chloride based resin composition

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Publication number
JPS60161449A
JPS60161449A JP1509084A JP1509084A JPS60161449A JP S60161449 A JPS60161449 A JP S60161449A JP 1509084 A JP1509084 A JP 1509084A JP 1509084 A JP1509084 A JP 1509084A JP S60161449 A JPS60161449 A JP S60161449A
Authority
JP
Japan
Prior art keywords
weight
methyl methacrylate
vinyl chloride
component
parts
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.)
Granted
Application number
JP1509084A
Other languages
Japanese (ja)
Other versions
JPH0452295B2 (en
Inventor
Toshito Narita
俊人 成田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP1509084A priority Critical patent/JPS60161449A/en
Publication of JPS60161449A publication Critical patent/JPS60161449A/en
Publication of JPH0452295B2 publication Critical patent/JPH0452295B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE:The titled composition, obtained by incorporating two specific kinds of methyl methacrylate based polymers with a graft copolymer containing an acrylic rubber, and having improved weather, heat distortion and impact resistance and processability while retaining the characteristics of the resins. CONSTITUTION:A vinyl chloride based resin composition obtained by incorporating (A) 50-80pts.wt. vinyl chloride resin containing >=80wt% vinyl chloride component with (B) 5-40pts.wt. methyl methacrylate based polymer, containing 75- 100wt% methyl methacrylate component, and having 0.05-2dl/g reduced viscosity, (C) 1-15pts.wt. methyl methacrylate based polymer, containing 65-100wt% methyl methacrylate component, and having 2-18dl/g reduced viscosity and (D) 5-30pts.wt. graft copolymer of 30-80wt% acrylic rubber with 70-20wt% compound selected from alkyl acrylates, alkyl methacrylates, aromatic vinyl compounds and cyanogen compounds.

Description

【発明の詳細な説明】[Detailed description of the invention]

【発明の技術分野1 本発明は、耐候性、耐熱変形性、耐衝撃性及び加工性が
優れた塩化ビニル系樹脂組成物に関する。 【従来技術の問題点1 従来から、塩化ビニル系樹脂は、安価であって、難燃性
、耐薬品性など多くの長所を有する樹脂として汎用され
ていた。しかしながら、塩化ビニル樹脂単独では、耐衝
撃性、耐熱変形性、射出成形時にみられるゲートマーク
などの成形性及び真空成形性などの二次加工性等に関し
ては、必ずしも満足できる性質は得られなかった。 そこで、かかる性質を改善するための添加剤が種々提案
されている0例えば、耐衝撃性を改良するために、いわ
ゆるMBS樹脂などの改質剤を添加する方法が開発され
た。また、耐熱変形性に関しては、α−メチルスチレン
を特徴とする特許温度の高い樹脂を使用することが提案
されている。更に、加工性については、加工助剤と称さ
れる、主に、還元粘度が3 dl/g以上の高重合度の
アクリル系重合体又は共重合体を添加することが行われ
ていた。 しかしながら、このような種々の方法を適用することに
よって一応の目的は達成される反面、効果の異なる添加
剤を二種又は三種同時に使用しても、耐候性、耐熱変形
性、耐衝撃性及び加工性などの諸物件をすべて向上させ
ることは困難であった0例えば、耐熱変形性改質剤は、
耐衝撃性などの諸物件を低下させてしまい、すべてにつ
いてバランスのとれた性能を付与することはできなかっ
た。また、ブタジェンを使用した耐衝撃性改質剤は、屋
外での用途に用いた場合に、経時的に強度を低下させ、
更には帯色をきたすため、使用するに耐えないものであ
った。なお、二次加工性については、適切な改良方法が
見出されていないのが現状である。 【発明の目的】 本発明は、塩化ビニル樹脂本来の特性を維持したまま、
更に耐候性、耐熱変形性、耐衝撃性及び加工性にも優れ
た塩化ビニル系樹脂組成物を提供することを目的とする
TECHNICAL FIELD OF THE INVENTION 1 The present invention relates to a vinyl chloride resin composition having excellent weather resistance, heat deformation resistance, impact resistance and processability. [Problem of the Prior Art 1] Vinyl chloride resins have been widely used as resins that are inexpensive and have many advantages such as flame retardancy and chemical resistance. However, vinyl chloride resin alone did not necessarily provide satisfactory properties in terms of impact resistance, heat deformation resistance, formability such as gate marks seen during injection molding, and secondary processability such as vacuum formability. . Therefore, various additives have been proposed to improve such properties. For example, in order to improve impact resistance, a method of adding a modifier such as a so-called MBS resin has been developed. Regarding heat deformation resistance, it has been proposed to use a resin with a high patent temperature characterized by α-methylstyrene. Furthermore, in order to improve processability, acrylic polymers or copolymers with a high degree of polymerization and a reduced viscosity of 3 dl/g or more, which are called processing aids, have been added. However, although the objective can be achieved by applying these various methods, even if two or three additives with different effects are used simultaneously, the weather resistance, heat deformation resistance, impact resistance, and processing For example, it was difficult to improve all properties such as
This resulted in a decrease in various properties such as impact resistance, and it was not possible to provide balanced performance in all respects. Additionally, impact modifiers using butadiene decrease strength over time when used in outdoor applications.
Furthermore, it caused discoloration, making it unsuitable for use. It should be noted that at present, no suitable method for improving secondary processability has been found. [Object of the invention] The present invention aims to provide a polyvinyl chloride resin that maintains its original properties.
Furthermore, it is an object of the present invention to provide a vinyl chloride resin composition that has excellent weather resistance, heat deformation resistance, impact resistance, and processability.

【発明の概要] 本発明の塩化ビニル系樹脂組成物は、 (A)塩化ビニル成分を80重量%以上含む塩化ビニル
系樹脂:50〜80重量部 (B)メタクリル酸メチル成分75〜100重量%とこ
れと共重合可能な単量体成分25〜0重量%からなり、
かつその還元粘度が0.05〜2 dllgであるメタ
クリル酸メチル系重合体= 5〜40重量部(C)メタ
クリル酸メチル成分85〜100重量%とこれと共重合
可能な単量体成分35〜0重量%からなり、かつその還
元粘度が2〜18 dllgであるメタクリル酸メチル
系重合体:1−15重量部(D)アクリル系ゴム30〜
80重量%と、アクリル酸アルキルエステル、メタクリ
ル融アルキルエステル、芳香族ビニル化合物及びシアン
化合物からなる群より選ばれる一種以上の化合物70〜
20重量%とのグラフト共重合体= 5〜30重量部か
ら構成され、 (A)〜(D)の合計量が100重量部
であることを特徴とする。 以下1本発明の詳細な説明する。 本発明における塩化ビニル系樹脂(A)は、塩化ビニル
単独重合体、又は、塩化ビニル成分と20重量%以内の
他の共重合可能な単量体成分との共重合体である。これ
らの単独重合体及び共重合体は、単独で又は混合して用
いられる。共重合可能な単量体成分としては、例えば、
酢酸ビニル、エチレン、プロピレンなどが挙げられるが
、その共重合体中に占る割合は20重量%以内である。 20重量%を超える場合には、熱変形温度の低下が大き
くなり1本発明の目的である耐熱変形性を付与すること
が困難となるため好ましくない、なお、塩化ビニル系樹
脂(A)は、JIS K−8721で規定される平均重
合度800〜1100のものが、成形上好ましい。 本発明におけるメタクリル酸メチル系重合体(B)は、
メタクリル酸メチル単独重合体、又は、メタクリル酸メ
チル成分と25重量%以内の他の共重合可能な単量体成
分との共重合体である。 これらの単独重合体及び共重合体は、単独で又は混合し
て用いられる。なお、メタクリル酸メチル系重合体(B
)は、その0.1gを 1001のクロロホルムに溶解
した溶液を25℃にて測定したときの還元粘度(ηsp
/c)が、0.05〜2 dllgの範囲内にあること
が必要である。還元粘度が0.05dl/g未満の場合
は、本発明の目的である耐熱変形性を付与することが困
難となるため好ましくない0通常の成形手段を考慮した
場合は、メタクリル酸メチル系重合体(B)の還元粘度
は、0.3〜o、8 dllgの範囲が好ましい。 メタクリル酸メチル系重合体(B)における共重合可能
な単量体成分としては、例えば、炭素数1〜8のアルキ
ル基を有するアクリル酸アルキルエステル、スチレン、
α−メチルスチレン、アクリロニトリルなどが挙げられ
るが、アクリル酸メチル、アクリル酸エチルなどが好ま
しい、その共重合体中に占る割合は2b重量%以内、好
ましくは10重量%以内であるが、25重量%を超える
と1本発明の目的である耐熱変形性を付与することが困
難になるため好ましくない。 本発明におけるメタクリル酸メチル系重合体(C)は、
メタクリル酸メチル単独重合体、又は、メタクリル酸メ
チル成分と35重量%以内の他の共重合可能な単量体成
分との共重合体である。 これらの単独重合体及び共重合体は、単独で又は混合し
て用いられる。なお、メタクリル酸メチル系重合体(C
)は、その0.1gを 1001のクロロホルムに溶解
した溶液を25℃にて測定したときの還元粘度(ηsp
/c)が、2〜t8 dl/g、好ましくは 2〜12
 dl/gの範囲内にあることが必要である。還元粘度
がIs dl/gを超える場合は、例えば、押出成形時
の負荷が大きくなるため、加工が困難になる。 メタクリル酸メチル系重合体(C)における共重合可能
な単量体成分としては、例えば、炭素数1〜8のアルキ
ル基を有するアクリル酸アルキルエステル、スチレン、
α−メチルスチレン、アクリロニトリルなどが挙げられ
るが、アクリル酸エチル、アクリル酸ブチルなどが好ま
しい。その共重合体中に占る割合は35重量%以内、好
ましくは10〜25重量%の範囲であるが、35重量%
を超えると、本発明の目的である耐熱変形性を付与する
ことが困難になるため好ましくない。 本発明におけるグラフト共重合体(D)は、耐衝撃性を
付与するための成分である。また、グラフト共重合体(
D)を構成するアクリル系ゴムは耐候性を付与するため
の成分であって、その効果はジエン系ゴムよりも優れて
いる。しかしながら、用途によっては必要に応じてアク
リル系ゴム中の40重量%以下を共役ジエン系ゴムで置
き換えてもよい。本発明におけるアクリル系ゴムには、
かかる場合も含まれる。なお、アクリル系ゴムとしては
、主成分としてアルキル基の炭素数が1〜8のアクリル
酸アルキルエステルから得られるものを使用する。 グラフト共重合体(D)は、かかるアクリル系ゴム30
〜80重量%の存在下に、アクリル酸アルキルエステル
、メタクリル酸アルキルエステル、芳香族ビニル化合物
及びシアン化合物からなる群より選ばれる一種以上の化
合物70〜20重量%を共重合せしめることにより得ら
れる。ここで、グラフト共重合用のアクリル酸アルキル
エステルとは、炭素数が 1〜8のアルキル基を有する
ものであり、メタクリル酸アルキルエステルとは炭素数
が1〜4のアルキル基を有するものである。また、芳香
族ビニル化合物としては、例えば、スチレン、α−メチ
ルスチレン、ビニルトルエン及びα−メチルビニルトル
エンが挙げられる。更に、シアン化合物としては、例え
ば、アクリロニトリル及びメタクリロニトリルが挙げら
れる0本発明においては1通常、メタクリル酸メチル、
アクリル酸ブチル、スチレンなどが用いられる。これら
のグラフト共重合用の単量体成分の配合量は20〜70
重量%であるが、70重量%を超えると弾性体成分が不
足して満足な耐衝撃性が得られず、また20重量%未満
では塩化ビニル系樹脂(A)成分との相溶性が不十分と
なり、界面剥離を生じて充分な耐衝撃性が得られにくく
なる。 以上の含有成分からなる本発明の塩化ビニル系樹脂組成
物は、前記した塩化ビニル系樹脂(A)50〜80重量
部、メタクリル酸メチル系重合体(B)5〜40重量部
、メタクリル酸メチル系重合体(C)1〜15重量部、
グラフト共重合体(D)5〜30重量部をそれぞれ配合
してなるものであって、 (A)〜 (D)の合計量は
 100重量部である。塩化ビニル系樹脂(A)の配合
量が50重量部未満の場合には、難燃性、耐薬品性など
の塩化ビニル系樹脂が木来有する特性が損なわれてしま
うため好ましくなく、60重量部以上の配合量とするこ
とが好ましい、また、メタクリル酸メチル系重合体(B
)は、耐熱変形性、機械的剛性、成形性及び二次成形性
を付与する上で重要な成分であり、5重量部未満の場合
には、これらの諸物件を充分に付与することができなく
なり、40重量部を超えると、グラフト共重合体(D)
成分の耐衝撃性付与効果を損なうため好ましくない、更
に、メタクリル酸メチル系重合体(C)の配合量が1重
置部未満では、得られる樹脂組成物の真空成形性、圧空
成形性、深絞り成形性及び肉厚均一性に対する効果が不
十分となり、一方、15重量部を超えると、例えば、押
出成形時の負荷が大になり、加工性が低下するため好ま
しくない、また、グラフト共重合体(D)は耐衝撃性改
質剤として使用されるものであるが、5重量部未満では
その効果が乏しくなり、一方、30重量部を超えると連
続層を形成し、耐衝撃性はむしろ低下するため好ましく
ない、なお、グラフト共重合体(D)の配合量は10〜
25重量部の範囲内にあることが好ましい。 本発明の塩化ビニル系樹脂組成物には、上記した(A)
〜(D)成分の他に、必要に応じて、熱安定剤、光安定
剤、滑剤、充填剤、染顔料又は可塑剤などを添加しても
よい。 本発明の塩化ビニル系樹脂組成物は、例えば。 シート、プレート、異型成形品、射出成形品に使用する
ことができ、更には、優れた耐候性を生かして、屋外、
屋内の住宅関連部材、家具、容器などにも使用すること
ができる。これらの成形品は、′押出、圧延、射出など
の通常の成形方法によって製造することができる。 [発明の効果1 本発明の塩化ビニル系樹脂組成物では、低粘度のメタク
リル酸メチル系重合体(B)、高粘度のメタクリル酸メ
チル系重合体(C)及び耐衝撃性改質剤であるグラフト
共重合体(D)を特定範囲の量で塩化ビニル樹脂(A)
に配合しているため、従来の塩化ビニル系樹脂の欠点で
ある耐候性、耐熱変形性、耐衝撃性及び加工性について
バランスよく改質させることができる。更には、(B)
成分及び(C)成分の併用により、驚くべきことに、真
空成形性などの二次加工性についても著しく改良するこ
とができた。 【発明の実施例】 以下の実施例及び比較例において、1部」とはすべて「
重量部」を表す。 実施例1 平均重合度700のポリ塩化ビニル(A)85部;メタ
クリル酸メチル85重量%及びアクリル酸エチル5重量
%から構成され、還元粘度の0.4dl/gのメタクリ
ル酸メチル系共重合体(B)15部:メタクリル酸メチ
ル85重量%及びアクリル酸ブチル15重量%から構成
され、還元粘度が8 dl/gのメタクリル酸メチル系
共重合体(C)5部;並びに、アクリル酸ブチルゴム7
0重量%の存在下で、メタクリル酸メチル25重量%及
びアクリル酸ブチル5重量%を共重合せしめて得られた
グラフト共重合体 (D)15部に、ブチルスズマレエ
ート 3部、ステアリン酸ブチル 1部及びモンタンワ
ックス 1部を加え、得られた混和物を40mmφ単軸
押出様により押出して厚さ3■のシートを製造した。押
出機のシリンダー及びダイス温度は 185℃であった
。 かかるシートの耐候性、耐衝撃性、耐熱変形性、押出成
形性及び二次成形性について評価し、得られた結果を各
成分の配合量とともに表に記載した。なお、耐候性及び
耐衝撃性は、サンシャインウエザオメーターによる曝露
前と 600時間曝露後とにおけるアイゾツト衝峻強度
(ASTN D 2513)を測定することにより評価
した。耐熱変形性は。 ASTN 0848 (1820KPa)により測定し
た。押出成形性は、内径40■■の押出機の負荷(アン
ペア)で示した。また、二次成形性については、真空成
形機を用い、内径90mm、底へ向ってのテーパー角が
5°で深さが可変のカップ状モデル木型を使用して、 
140℃、真空度870■■Hgの条件で成形したとき
の成形可能な深さを測定することにより評価した。 実施例2 メタクリル酸メチル系共重合体(B)を、還元粘度が0
.Ild l/gのメタクリル酸メチル単独重合体に代
えたこと以外は、実施例1と同様にしてシートを成形し
、試験評価した。結果を表に併記した。 実施例3 メタクリル酸メチル系共重合体(C)を、メタクリル酸
メチル80重量%、アクリル酸ブチル18重量%及びア
クリロニトリ°ル2重量%から構成され、還元粘度が1
0dl/gのメタクリル酸メチル系共重合体に代えたこ
と以外は、実施例1と同様にしてシートを成形し、試験
評価した。結果を表に併記した。 実施例4 実施例1で使用したポリ塩化ビニル(A)、メタクリル
酸メチル系共重合体(B)、メタクリル酸メチル系共重
合体(C)及びグラフト共重合体(D)の配合部数を表
の如く変更したこと以外は、実施例1と同様にしてシー
トを成形し、試験評価した。結果を表に併記した。 比較例1 メタクリル酸メチル系共重合体(B)を、還元粘度が3
dl/gのメタクリル酸メチル単独重合体に代えたこと
以外は、実施例1と同様にしてシートを成形し、試験評
価した。結果を表に併記した。 比較例2 メタクリル酸メチル系共重合体(C)を、メタクリル−
メチル85重量%及びアクリル酸ブチル15重量%から
構成され、還元粘度が1.5dl/gのメタクリル酸メ
チル系共重合体に代えたこと以外は、実施例1と同様に
してシートを成形し、試験評価した。結果を表に併記し
た。 比較例3 グラフト共重合体CD)を、ジエン系ゴムから構成され
るMBS樹脂(商品名メタブレンC223,三菱レイヨ
ン株式会社製)に代えたこと以外は、実施例1と同様に
してシートを成形し、試験評価した。結果を表に併記し
た。 比較例4及び5 実施例1で使用したポリ塩化ビニル(A)、メタクリル
酸メチル系共重合体(B)、メタクリル酸メチル系共重
合体(C)及びグラフト共重合体(D)の配合部数を表
の如く変更したこと以外は、実施例1と同様にしてシー
トを成形し、試験評価した。結果を表に併記した。
Summary of the Invention The vinyl chloride resin composition of the present invention comprises: (A) Vinyl chloride resin containing 80% by weight or more of a vinyl chloride component: 50 to 80 parts by weight (B) 75 to 100 parts by weight of a methyl methacrylate component and 25 to 0% by weight of a monomer component copolymerizable with this,
and a methyl methacrylate polymer having a reduced viscosity of 0.05 to 2 dllg = 5 to 40 parts by weight (C) 85 to 100% by weight of the methyl methacrylate component and 35 to 35% of the monomer component copolymerizable therewith Methyl methacrylate polymer consisting of 0% by weight and having a reduced viscosity of 2 to 18 dllg: 1 to 15 parts by weight (D) Acrylic rubber 30 to
80% by weight, and 70 to 70% of one or more compounds selected from the group consisting of acrylic acid alkyl esters, methacrylic fused alkyl esters, aromatic vinyl compounds, and cyanide compounds.
20% by weight of the graft copolymer = 5 to 30 parts by weight, and the total amount of (A) to (D) is 100 parts by weight. The present invention will be explained in detail below. The vinyl chloride resin (A) in the present invention is a vinyl chloride homopolymer or a copolymer of a vinyl chloride component and another copolymerizable monomer component within 20% by weight. These homopolymers and copolymers may be used alone or in combination. Examples of copolymerizable monomer components include:
Examples include vinyl acetate, ethylene, propylene, etc., and their proportion in the copolymer is within 20% by weight. If it exceeds 20% by weight, it is not preferable because the reduction in heat distortion temperature becomes large and it becomes difficult to provide heat distortion resistance, which is the objective of the present invention. Those having an average degree of polymerization of 800 to 1100 as defined by JIS K-8721 are preferable for molding. The methyl methacrylate polymer (B) in the present invention is
It is a methyl methacrylate homopolymer or a copolymer of a methyl methacrylate component and another copolymerizable monomer component within 25% by weight. These homopolymers and copolymers may be used alone or in combination. In addition, methyl methacrylate polymer (B
) is the reduced viscosity (η sp
/c) is required to be within the range of 0.05 to 2 dllg. If the reduced viscosity is less than 0.05 dl/g, it becomes difficult to impart heat deformation resistance, which is the objective of the present invention, and is therefore undesirable.0 When ordinary molding means are taken into consideration, methyl methacrylate-based polymers The reduced viscosity of (B) is preferably in the range of 0.3 to 8 dllg. Copolymerizable monomer components in the methyl methacrylate polymer (B) include, for example, acrylic acid alkyl esters having an alkyl group having 1 to 8 carbon atoms, styrene,
Examples include α-methylstyrene, acrylonitrile, etc., but methyl acrylate, ethyl acrylate, etc. are preferred, and their proportion in the copolymer is within 2b% by weight, preferably within 10% by weight, but 25% by weight %, it is not preferable because it becomes difficult to provide heat deformation resistance, which is the objective of the present invention. The methyl methacrylate polymer (C) in the present invention is
It is a methyl methacrylate homopolymer or a copolymer of a methyl methacrylate component and another copolymerizable monomer component within 35% by weight. These homopolymers and copolymers may be used alone or in combination. In addition, methyl methacrylate polymer (C
) is the reduced viscosity (η sp
/c) is 2 to t8 dl/g, preferably 2 to 12
It is necessary to be within the range of dl/g. When the reduced viscosity exceeds Is dl/g, for example, the load during extrusion molding increases, making processing difficult. Copolymerizable monomer components in the methyl methacrylate polymer (C) include, for example, acrylic acid alkyl esters having an alkyl group having 1 to 8 carbon atoms, styrene,
Examples include α-methylstyrene and acrylonitrile, with ethyl acrylate, butyl acrylate and the like being preferred. Its proportion in the copolymer is within 35% by weight, preferably in the range of 10 to 25% by weight, but 35% by weight
Exceeding this is not preferable because it becomes difficult to provide heat deformation resistance, which is the objective of the present invention. The graft copolymer (D) in the present invention is a component for imparting impact resistance. In addition, graft copolymers (
The acrylic rubber constituting D) is a component for imparting weather resistance, and its effect is superior to that of diene rubber. However, depending on the application, 40% by weight or less of the acrylic rubber may be replaced with a conjugated diene rubber, if necessary. The acrylic rubber in the present invention includes:
Such cases are also included. In addition, as the acrylic rubber, one obtained from an acrylic acid alkyl ester having an alkyl group having 1 to 8 carbon atoms as a main component is used. The graft copolymer (D) is such an acrylic rubber 30
It is obtained by copolymerizing 70 to 20% by weight of one or more compounds selected from the group consisting of acrylic acid alkyl esters, methacrylic acid alkyl esters, aromatic vinyl compounds, and cyanide compounds in the presence of 80% by weight. Here, the acrylic acid alkyl ester for graft copolymerization is one having an alkyl group having 1 to 8 carbon atoms, and the methacrylic acid alkyl ester is one having an alkyl group having 1 to 4 carbon atoms. . Furthermore, examples of aromatic vinyl compounds include styrene, α-methylstyrene, vinyltoluene, and α-methylvinyltoluene. Furthermore, examples of cyanide compounds include acrylonitrile and methacrylonitrile. In the present invention, methyl methacrylate,
Butyl acrylate, styrene, etc. are used. The blending amount of these monomer components for graft copolymerization is 20 to 70
However, if it exceeds 70% by weight, the elastic body component is insufficient and satisfactory impact resistance cannot be obtained, and if it is less than 20% by weight, the compatibility with the vinyl chloride resin (A) component is insufficient. This causes interfacial peeling, making it difficult to obtain sufficient impact resistance. The vinyl chloride resin composition of the present invention comprising the above-mentioned components includes 50 to 80 parts by weight of the vinyl chloride resin (A), 5 to 40 parts by weight of the methyl methacrylate polymer (B), and methyl methacrylate. 1 to 15 parts by weight of polymer (C),
It is made by blending 5 to 30 parts by weight of the graft copolymer (D), and the total amount of (A) to (D) is 100 parts by weight. If the blending amount of the vinyl chloride resin (A) is less than 50 parts by weight, it is not preferable because the properties that the vinyl chloride resin has, such as flame retardancy and chemical resistance, will be impaired. It is preferable to use the above blending amount, and the methyl methacrylate polymer (B
) is an important component in imparting heat deformation resistance, mechanical rigidity, moldability, and secondary formability, and if it is less than 5 parts by weight, these properties cannot be sufficiently imparted. If the amount exceeds 40 parts by weight, the graft copolymer (D)
This is undesirable because it impairs the effect of imparting impact resistance to the component.Furthermore, if the amount of the methyl methacrylate polymer (C) is less than 1 part, the vacuum moldability, pressure moldability, and depth of the resulting resin composition will deteriorate. The effect on drawing formability and wall thickness uniformity will be insufficient, and on the other hand, if it exceeds 15 parts by weight, the load during extrusion molding will become large and workability will decrease, which is not preferable. Coalescence (D) is used as an impact resistance modifier, but if it is less than 5 parts by weight, its effect will be poor, while if it exceeds 30 parts by weight, it will form a continuous layer and the impact resistance will be rather poor. However, the blending amount of the graft copolymer (D) is 10 to 10%.
Preferably, it is within the range of 25 parts by weight. The vinyl chloride resin composition of the present invention includes (A) as described above.
In addition to components (D), heat stabilizers, light stabilizers, lubricants, fillers, dyes and pigments, plasticizers, etc. may be added as necessary. The vinyl chloride resin composition of the present invention includes, for example. It can be used for sheets, plates, irregularly molded products, and injection molded products. Furthermore, it can be used outdoors, taking advantage of its excellent weather resistance.
It can also be used for indoor housing-related parts, furniture, containers, etc. These molded articles can be manufactured by conventional molding methods such as extrusion, rolling, and injection. [Effect of the invention 1 The vinyl chloride resin composition of the present invention contains a low viscosity methyl methacrylate polymer (B), a high viscosity methyl methacrylate polymer (C), and an impact modifier. Graft copolymer (D) is added to vinyl chloride resin (A) in a specific range of amount.
Since it is blended with the polyvinyl chloride resin, weather resistance, heat deformation resistance, impact resistance, and processability, which are disadvantages of conventional vinyl chloride resins, can be modified in a well-balanced manner. Furthermore, (B)
Surprisingly, secondary processability such as vacuum formability was also significantly improved by the combined use of component (C) and component (C). [Embodiments of the Invention] In the following Examples and Comparative Examples, "1 part" means "1 part".
Parts by weight. Example 1 85 parts of polyvinyl chloride (A) with an average degree of polymerization of 700; methyl methacrylate-based copolymer composed of 85% by weight of methyl methacrylate and 5% by weight of ethyl acrylate, with a reduced viscosity of 0.4 dl/g (B) 15 parts: 5 parts of methyl methacrylate copolymer (C) composed of 85% by weight of methyl methacrylate and 15% by weight of butyl acrylate and having a reduced viscosity of 8 dl/g; and 7 parts of butyl acrylate rubber.
Graft copolymer (D) obtained by copolymerizing 25% by weight of methyl methacrylate and 5% by weight of butyl acrylate in the presence of 0% by weight, 3 parts of butyltin maleate, and 1 part of butyl stearate. 1 part and 1 part of montan wax were added, and the resulting mixture was extruded using a 40 mmφ single-screw extrusion method to produce a sheet with a thickness of 3 cm. The extruder cylinder and die temperature was 185°C. The weather resistance, impact resistance, heat deformation resistance, extrusion moldability, and secondary moldability of this sheet were evaluated, and the obtained results are listed in the table together with the blending amount of each component. The weather resistance and impact resistance were evaluated by measuring Izod impact strength (ASTN D 2513) before and after 600 hours of exposure using a sunshine weatherometer. Heat deformation resistance. Measured by ASTN 0848 (1820 KPa). Extrusion moldability was expressed as the load (ampere) of an extruder with an inner diameter of 40 mm. Regarding secondary formability, we used a vacuum forming machine and a cup-shaped model wooden mold with an inner diameter of 90 mm, a taper angle of 5 degrees toward the bottom, and a variable depth.
Evaluation was made by measuring the moldable depth when molding was performed under the conditions of 140°C and a degree of vacuum of 870mmHg. Example 2 Methyl methacrylate copolymer (B) was prepared with a reduced viscosity of 0.
.. A sheet was molded and tested and evaluated in the same manner as in Example 1, except that the methyl methacrylate homopolymer of Ild l/g was used. The results are also listed in the table. Example 3 A methyl methacrylate copolymer (C) was composed of 80% by weight of methyl methacrylate, 18% by weight of butyl acrylate and 2% by weight of acrylonitrile, and had a reduced viscosity of 1.
A sheet was molded and tested and evaluated in the same manner as in Example 1, except that the methyl methacrylate copolymer was used at 0 dl/g. The results are also listed in the table. Example 4 The blended parts of polyvinyl chloride (A), methyl methacrylate copolymer (B), methyl methacrylate copolymer (C), and graft copolymer (D) used in Example 1 are shown below. A sheet was molded and tested and evaluated in the same manner as in Example 1, except for the following changes. The results are also listed in the table. Comparative Example 1 Methyl methacrylate copolymer (B) was prepared with a reduced viscosity of 3
A sheet was molded and tested and evaluated in the same manner as in Example 1, except that methyl methacrylate homopolymer of dl/g was used instead. The results are also listed in the table. Comparative Example 2 Methyl methacrylate copolymer (C) was
A sheet was formed in the same manner as in Example 1, except that a methyl methacrylate copolymer consisting of 85% by weight of methyl and 15% by weight of butyl acrylate and having a reduced viscosity of 1.5 dl/g was used, Test evaluated. The results are also listed in the table. Comparative Example 3 A sheet was molded in the same manner as in Example 1, except that the graft copolymer CD) was replaced with MBS resin composed of diene rubber (trade name Metablen C223, manufactured by Mitsubishi Rayon Co., Ltd.). , tested and evaluated. The results are also listed in the table. Comparative Examples 4 and 5 Number of blended parts of polyvinyl chloride (A), methyl methacrylate copolymer (B), methyl methacrylate copolymer (C), and graft copolymer (D) used in Example 1 A sheet was molded and tested and evaluated in the same manner as in Example 1, except that the values were changed as shown in the table. The results are also listed in the table.

Claims (1)

【特許請求の範囲】 (A)塩化ビニル成分を80重量%以上含む塩化ビニル
系樹脂=50〜80重量部 (B)メタクリル酸メチル成分75〜10(1重量%と
これと共重合可能な単量体成分25〜O重量%からなり
、かつその還元粘度が0.05〜2 dl/gであるメ
タクリル酸メチル系重合体: 5〜40重量部(C)メ
タクリル酸メチル成分85〜100重量%とこれと共重
合可能な単量体成分35〜0重量%からなり、かつその
還元粘度が2〜18 dl/gであるメタクリル酸メチ
ル系重合体: 1〜15重量部(D)アクリル系ゴム3
0〜80重量%と、アクリル酸アルキルエステル、メタ
クリル酸アルキルエステル、芳香族ビニル化合物及びシ
アン化合物からなる群より選ばれる一種以上の化合物7
0〜20重量%とのグラフト共重合体: 5〜30重量
部から構成され、 (A)〜(D)の合計量が100重
量部であることを特徴とする塩化ビニル系樹脂組成物。
Scope of Claims (A) Vinyl chloride resin containing 80% by weight or more of vinyl chloride component = 50 to 80 parts by weight (B) Methyl methacrylate component 75 to 10 (1% by weight and a monomer copolymerizable with this) Methyl methacrylate-based polymer consisting of 25-0% by weight of mercury component and having a reduced viscosity of 0.05-2 dl/g: 5-40 parts by weight (C) 85-100% by weight of methyl methacrylate component and a methyl methacrylate-based polymer consisting of 35-0% by weight of a monomer component copolymerizable with this and having a reduced viscosity of 2-18 dl/g: 1-15 parts by weight (D) Acrylic rubber 3
0 to 80% by weight, and one or more compounds selected from the group consisting of acrylic acid alkyl esters, methacrylic acid alkyl esters, aromatic vinyl compounds, and cyanide compounds 7
A vinyl chloride resin composition comprising 5 to 30 parts by weight of a graft copolymer with 0 to 20% by weight, and the total amount of (A) to (D) being 100 parts by weight.
JP1509084A 1984-02-01 1984-02-01 Vinyl chloride based resin composition Granted JPS60161449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1509084A JPS60161449A (en) 1984-02-01 1984-02-01 Vinyl chloride based resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1509084A JPS60161449A (en) 1984-02-01 1984-02-01 Vinyl chloride based resin composition

Publications (2)

Publication Number Publication Date
JPS60161449A true JPS60161449A (en) 1985-08-23
JPH0452295B2 JPH0452295B2 (en) 1992-08-21

Family

ID=11879143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1509084A Granted JPS60161449A (en) 1984-02-01 1984-02-01 Vinyl chloride based resin composition

Country Status (1)

Country Link
JP (1) JPS60161449A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008062173A (en) * 2006-09-07 2008-03-21 Matsushita Electric Ind Co Ltd Dust collector and air-conditioner
CN103450591A (en) * 2013-08-22 2013-12-18 吴江骏达电梯部件有限公司 Anti-static rubber belt for escalator and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948745A (en) * 1972-09-12 1974-05-11
JPS49116148A (en) * 1973-03-13 1974-11-06
JPS50123765A (en) * 1974-02-18 1975-09-29
JPS5442035A (en) * 1977-08-24 1979-04-03 Furukawa Electric Co Ltd Automatic liquid drain valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948745A (en) * 1972-09-12 1974-05-11
JPS49116148A (en) * 1973-03-13 1974-11-06
JPS50123765A (en) * 1974-02-18 1975-09-29
JPS5442035A (en) * 1977-08-24 1979-04-03 Furukawa Electric Co Ltd Automatic liquid drain valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008062173A (en) * 2006-09-07 2008-03-21 Matsushita Electric Ind Co Ltd Dust collector and air-conditioner
CN103450591A (en) * 2013-08-22 2013-12-18 吴江骏达电梯部件有限公司 Anti-static rubber belt for escalator and preparation method thereof

Also Published As

Publication number Publication date
JPH0452295B2 (en) 1992-08-21

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