JPS59179552A - Improvement in tear strength of vinyl chloride graft copolymer - Google Patents
Improvement in tear strength of vinyl chloride graft copolymerInfo
- Publication number
- JPS59179552A JPS59179552A JP5163883A JP5163883A JPS59179552A JP S59179552 A JPS59179552 A JP S59179552A JP 5163883 A JP5163883 A JP 5163883A JP 5163883 A JP5163883 A JP 5163883A JP S59179552 A JPS59179552 A JP S59179552A
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- Japan
- Prior art keywords
- vinyl acetate
- ethylene
- copolymer
- weight
- vinyl
- 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.)
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、塩化ビニル系グラフト共重合体の引裂き強さ
の改良方法に関する。さらに詳し、〈は、エチレン−酢
酸ビニル共重合体（以下Ｆ２ＶＡと略す。）の存在下に
塩化ビニルモノマ〜もしくは塩化ビニルモノマーを主体
とするモノマー混合物を重合させることにより製造さｔ
１乙塩化ビニル系グラフト共重合体（以下ＥＶＡ−塩化
ビニルクラフト共重合体と略す。）にエチレン・酢酸ビ
ニル、・−酸化炭素共重合体或いはＥＶＡを混合するこ
とによる、該塩化ビニル系グラフト共重合体の引裂き強
さの改良方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for improving the tear strength of vinyl chloride-based graft copolymers. In more detail, < is produced by polymerizing a vinyl chloride monomer or a monomer mixture mainly composed of vinyl chloride monomer in the presence of an ethylene-vinyl acetate copolymer (hereinafter abbreviated as F2VA).
1) Vinyl chloride-based graft copolymer (hereinafter abbreviated as EVA-vinyl chloride craft copolymer) by mixing ethylene/vinyl acetate, carbon oxide copolymer or EVA. This invention relates to a method for improving the tear strength of polymers.
ＥＶＡ−塩化ビニルグラフト共重合体は、塩ビホリマー
の特殊品として、各種用途に使用されている。たとえば
、ＥＶＡ−塩化ビニルグラフト共重合体中のＥＶＡ含有
量が１５重量％以下のものは、硬質分野向けにシート、
パイプなとの押出成形品とか射出成形品として、寸だ、
ＥＶＡ含有量が４０重量％程度より多いものは、可塑剤
を含まない軟質分野向けに、シート、ホースなどの押出
成形品として使用されてきた。EVA-vinyl chloride graft copolymers are used as special vinyl chloride polymers for various purposes. For example, EVA-vinyl chloride graft copolymers with an EVA content of 15% by weight or less are used in sheets,
As extrusion molded products or injection molded products such as pipes,
Products with an EVA content of more than about 40% by weight have been used as extrusion molded products such as sheets and hoses for soft fields that do not contain plasticizers.
しかるに、ＥＶＡ含有量が１５〜４０重量−の範囲のＥ
ＶＡ−塩化ビニルグラフト共重合体の引裂き強さは、奇
妙なことに極端に低下（〜、シート。However, EVA content in the range of 15 to 40 wt.
The tear strength of the VA-vinyl chloride graft copolymer is strangely extremely low (~, sheet).
フィルム等の薄膜状の製品としては使用に耐えず、よう
な低い引裂き強さｒ、ｉ’、、 Ｋ Ｖ Ａ含有量が１
５重量％以下または４０重量％以上のＢＶＡ−塩化ビニ
ルグラフト共重合体では見られず、原因の究明とあわせ
て対応策が望まれていたのである。It cannot be used as a thin film product such as a film, and has a low tear strength r, i', K V A content of 1.
This problem was not observed in BVA-vinyl chloride graft copolymers containing 5% by weight or less or 40% by weight or more, and it was desired to find out the cause and take countermeasures.
本発明者らは、このような特定範囲のＥＶＡを含有する
ＥＶＡ−塩化ビニルグラフト共重合体の引裂き強さを改
良する方法について鋭意検討した結果、該グラフト共重
合体に特定量のエチレン・酢酸ビニル・−酸化炭素共重
合体および／またはＥＶＡを混合することによって、引
裂き強さを大巾に改良する方法を見出した。本発明をさ
らに詳しく述べれば、酢酸ビニル１０〜５０市量チを含
むＥＶＡの１５〜４０市量チに、塩化ビニルもしくは塩
化ビニルを主体とする七ツマー混合物６０〜８５重量％
をグラフト重合して得られたＥＶＡ−塩化ビニルグラフ
ト共重合体５０〜９５重量部Ｋ、少１：も−ｍ類のエチ
レン・酢酸ビニル・−酸化炭素共重合体または／および
少なくとも一種類のＥ Ｖ Ａ’５〜５０重量部を混合
することによシ、該グラフト共重合体の引裂き強さを改
良する方法を提供する。The present inventors conducted intensive studies on a method for improving the tear strength of EVA-vinyl chloride graft copolymers containing EVA in a specific range, and found that a specific amount of ethylene and acetic acid was added to the graft copolymer. We have found a way to significantly improve tear strength by mixing vinyl-carbon oxide copolymer and/or EVA. To describe the present invention in more detail, 15 to 40 parts of EVA containing 10 to 50 parts of vinyl acetate are mixed with 60 to 85% by weight of vinyl chloride or a 7-mer mixture mainly composed of vinyl chloride.
50 to 95 parts by weight of EVA-vinyl chloride graft copolymer obtained by graft polymerization of K, a small amount of 1: M-class ethylene/vinyl acetate/carbon oxide copolymer or/and at least one type of E A method is provided for improving the tear strength of the graft copolymer by mixing 5 to 50 parts by weight of VA'.
塩化ビニル系ポリマーにエチレン・酢酸ビニル・−酸化
炭素共重合体或いはＩＤＥＡを混合する技術は、耐衝撃
性とか可塑化を目的として実用化されている技術である
が、エチレン・酢酸ビニル・−酸化炭素共重合体或いは
ＥＶＡの混合によって引裂き強さが改良されることはこ
れまで知られていなかった。捷た、９定のＥＶＡ−塩化
ビニルグラフト共重合体に特定量のエチレン・酢酸ビニ
ル・−酸化炭素共重合体或いはＥＶＡを混合することに
よって引裂き強さが太１］に改良される事実も知られて
おらず、本発明者らによってはじめて見明された現象で
ある。The technology of mixing ethylene/vinyl acetate/carbon oxide copolymer or IDEA with vinyl chloride-based polymer is a technology that has been put into practical use for the purpose of impact resistance or plasticization, but ethylene/vinyl acetate/carbon oxide copolymer It was not previously known that tear strength could be improved by incorporating a carbon copolymer or EVA. It is also known that the tear strength can be improved to 1 by mixing a specific amount of ethylene/vinyl acetate/carbon oxide copolymer or EVA with a 9-density EVA-vinyl chloride graft copolymer. This phenomenon was discovered for the first time by the present inventors.
本発明にて用いるＥＶＡ−塩化ビニルグラフト共重合体
は、ＥＶＡ １５〜４０重量部の存在下に塩化ビニルあ
るいは、塩化ビニルを主体とするモアツマ−混合物６０
〜８５重量部をクラフト共重合することによって得られ
る。グラフト共重合は、懸濁重合、乳化重合、塊状重合
、溶液重合のいずれかの方法で行われるが、懸濁重合法
によるのが、最も好ましい。壕だ、ＥＶＡは、高圧法、
溶液法などのラジカル重合法で得られたものが用いられ
るが、高圧法で製造されたものが好適である。The EVA-vinyl chloride graft copolymer used in the present invention is a mixture of vinyl chloride or a Moazuma mixture mainly composed of vinyl chloride in the presence of 15 to 40 parts by weight of EVA.
It is obtained by kraft copolymerization of ~85 parts by weight. Graft copolymerization is carried out by any one of suspension polymerization, emulsion polymerization, bulk polymerization, and solution polymerization, but suspension polymerization is most preferred. It's a trench, EVA is a high pressure method,
Those obtained by a radical polymerization method such as a solution method are used, but those produced by a high pressure method are preferable.
ＥＶＡの酢酸ビニル含有量は１０〜５０重量％。The vinyl acetate content of EVA is 10-50% by weight.
メルトインデックスは１１１〜５００シ／１０分のもの
が使用される。A melt index of 111 to 500 sh/10 minutes is used.
上述した塩化ビニルモノマーと混合してグラフト共重合
するモノマーとしては、エチルアクリレート、メチルア
クリレート、メチルアクリレート。Examples of monomers that can be graft copolymerized by mixing with the vinyl chloride monomer described above include ethyl acrylate, methyl acrylate, and methyl acrylate.
メチルメタアクリレートなどのアクリル酸誘導体やメタ
クリル酸誘導体、エチレン、プロピレンなどのオレフィ
ン、フマル酸およびマレイン酸エステル、ビニルエーテ
ルおよび酢酸ビ三ル、プロピオン酸ビニルなどのビニル
エステル等があす、通常０．１〜５重量部を使用する。Acrylic acid derivatives and methacrylic acid derivatives such as methyl methacrylate, olefins such as ethylene and propylene, fumaric acid and maleic acid esters, vinyl ethers and vinyl esters such as vinyl acetate and vinyl propionate, etc. Use 5 parts by weight.
このようにして得られたＥＶＡ−塩化ビニルクラフト共
重合体には、さらに通常の塩化ビニル系ポリマーと同じ
ように、安定剤、加工助剤、可塑剤などの改質剤を添加
してもよい。Modifiers such as stabilizers, processing aids, and plasticizers may be added to the EVA-vinyl chloride kraft copolymer thus obtained, in the same way as ordinary vinyl chloride-based polymers. .
該グラフト共重合体は、ついで特定量のエチレン・酢酸
ビニル・−酸化炭素共重合体或いはＥＶＡと混合される
。The graft copolymer is then mixed with a specific amount of ethylene-vinyl acetate-carbon oxide copolymer or EVA.
本発明にて該グラフト共重合体と混合するエチレン・酢
酸ビニル・−酸化炭素共重合体はエチレン含量が５０〜
７０重■チ、酢酸ビニル含量が２０〜４０重量％、−酸
化炭素含ｈ１−が５・〜２０重令１チの範囲のものであ
る。In the present invention, the ethylene/vinyl acetate/carbon oxide copolymer mixed with the graft copolymer has an ethylene content of 50 to
70 weight percent, a vinyl acetate content of 20 to 40 weight percent, and a -carbon oxide content h1- of 5. to 20 weight percent.
本発明にて該グラフト共重合体と混合するＦＶＡは酢酸
ビニル含量が２５〜６０重絹係かつメルトインデックス
０１〜５００９７１０分の範囲のものである。In the present invention, the FVA to be mixed with the graft copolymer has a vinyl acetate content of 25 to 60 FVA and a melt index of 01 to 5,009,710 minutes.
該エチレン・酢酸ビニル・−酸化炭素共重合体或いはＥ
ＶＡの混合量は該ＫＶＡ−塩化ビニルグラフト共重合体
の５０〜９５重量部に対して５〜５０重量部の範囲が使
用される。エチレン・酢酸ビニル・−酸化炭素共重合体
或いはＥＶＡの混合量が５１量部以下の場合には引裂き
強さの改良効果はほとんど見られず、１だ５０重計部を
こえると該グラフト共重合体の本来の性質が損なわれる
と共に加工もむずかしくなる。The ethylene/vinyl acetate/-carbon oxide copolymer or E
The mixing amount of VA is in the range of 5 to 50 parts by weight based on 50 to 95 parts by weight of the KVA-vinyl chloride graft copolymer. When the amount of ethylene/vinyl acetate/carbon oxide copolymer or EVA mixed is less than 51 parts by weight, there is almost no improvement in tear strength, and when it exceeds 1 to 50 parts by weight, the graft copolymer The original properties of the fusion are lost and processing becomes difficult.
ＥＶＡ−塩化ビニ、ルグラフト共重合体とエチレン・酢
酸ビニル・−酸化炭素共重合体或いはＦ Ｖ Ａの混合
には、ヘンシェルミキサー等でトライブレンドする方法
、−軸または二軸押出機で溶融混練する方法、ロール、
バンバリーミキサー等で混合する方法が用いられる。混
合温度は、上記の樹脂混合物を均一に混ぜばわせ、かつ
分解等を起させない範囲であればよ（，２００℃をこえ
ないことが望ましい。For mixing EVA-vinyl chloride, lugraft copolymer and ethylene-vinyl acetate-carbon oxide copolymer or FVA, there are two methods: tri-blending with a Henschel mixer, etc., and melt-kneading with a shaft or twin-screw extruder. method, role,
A method of mixing using a Banbury mixer or the like is used. The mixing temperature may be within a range that allows the resin mixture to be mixed uniformly and does not cause decomposition, etc. (preferably not exceeding 200°C).
混合時間は、上記の樹脂混合物を均一に混ぜ合わせる様
に設定する。The mixing time is set so that the above resin mixture is mixed uniformly.
とう（７て得られた混合物は、引続き、あるいはペレッ
ト化してから、カレンダー加工、押出加工等により薄膜
状に成形される。The mixture obtained in step 7 is then formed into a thin film by calendering, extrusion, etc., or after being pelletized.
本発明によって成形されたシーＨよ、エチレン・酢酸ビ
ニル・−酸化炭素共重合体或いはＫＶＡを含まない場合
に比べて、引裂き強さが大巾に改良され、今後、広い用
途に利用できるものである、２以下、本発明について実
施例で具体的に説明するが、それによって制限されるも
のではない。The tear strength of Sea H molded according to the present invention is greatly improved compared to the case where it does not contain ethylene/vinyl acetate/carbon oxide copolymer or KVA, and it can be used for a wide range of applications in the future. The present invention will be specifically described below with reference to Examples, but it is not limited thereto.
参考例１
攪拌装置を備えたステンレス製反応容器にＫＶＡ（酢酸
ビニル含量（２６％、メルトインデックス４．０）２．
９２吋、塩化ビニル単量体７．８３に９．部分ケン化ポ
リ酢酸ビニル１４．９４り、水２０．９ｋｇ。Reference Example 1 KVA (vinyl acetate content (26%, melt index 4.0)) 2.
92 inches, vinyl chloride monomer 7.83 to 9. 14.94 kg of partially saponified polyvinyl acetate, 20.9 kg of water.
及びターシャリープチルバーオキシビノくレート１．７
２２ｇ（総蔽）のアルコール溶液を添加し、６０℃で６
時間懸濁グラフト重合を行い生成物を濾過、水洗、乾燥
したところＥＶＡ３１．７％を含むＥＶＡ−塩化ビニル
グラフト共重合体ａ５に９が得られた
実施例１〜８ 比較例１
６インチロールを用いて１５０℃にて５分間、エチレン
・酢酸ビニル・−酸化炭素共重合体或いはＰ】Ｖ Ａの
種類を変えてＥＶＡ−塩化ビニルグラフト共重合体と混
練した。ＥＶＡ−塩化ビニルグラフト共重合体としては
参考例１で製造したものを使用した。and tertiary butylbaroxyvinoclate 1.7
Add 22g (total amount) of alcohol solution and heat at 60°C for 6 hours.
After time suspension graft polymerization, the product was filtered, washed with water, and dried to obtain EVA-vinyl chloride graft copolymer a5 to 9 containing 31.7% EVA. Examples 1 to 8 Comparative Example 1 A 6-inch roll was obtained. The ethylene-vinyl acetate-carbon oxide copolymer or P]VA was kneaded with the EVA-vinyl chloride graft copolymer at 150 DEG C. for 5 minutes. The EVA-vinyl chloride graft copolymer produced in Reference Example 1 was used.
エチレン・酢酸ビニル・−酸化炭素共重合体としてはシ
ュ・ボン社製エルバロイ（エチレン含貴５５チ、酢酸ビ
ニル含量３２％、−１止化炭素含量１３チ） ′ｆｆ：
、Ｆ＋ Ｖ Ａとしては、東洋薄達工業■製つルトラ七
ン７５０（酢酸ビニル含量３２％、メルトインデックス
６０）、ウルトラ七ン７６０（酢酸ビニル含に４０％＋
メルトインデックス７５）。As the ethylene/vinyl acetate/-carbon oxide copolymer, Elvaloy manufactured by Schu Bon (ethylene content: 55%, vinyl acetate content: 32%, -1 carbon content: 13%) 'ff:
, F+ V A includes: Toyo Usutatsu Kogyo's Tsurutra Seven 750 (vinyl acetate content 32%, melt index 60), Ultra Seven 760 (vinyl acetate content 40% +
Melt index 75).
ＵＳインダストリー社製バイナセン）ｕＹ−９０５（酢
酸ビニル含＋＠−５１チ、メルトインデックス１８）を
用いた。Binacene (manufactured by US Industries) uY-905 (contains vinyl acetate +@-51%, melt index 18) was used.
ＢＶＡ ｊ’ｎ化ビニルクラフト共１合体の安定剤と
して樹脂１００重量部に対してジブチル錫マレート系安
定剤２重量部及びジブチル錫ジラウレート系安定剤２頂
量部を用いた。混練した樹脂組成物を１６５℃、７分、
１０１３ ｋｑ ／（：ｎ？でプレスして１間厚み
のシートとし、ＪＩＳ Ｋ−６７７２に従って引裂き強
さを測定した。As a stabilizer for the BVA j'n-vinyl kraft copolymer, 2 parts by weight of a dibutyltin malate stabilizer and 2 parts by weight of a dibutyltin dilaurate stabilizer were used per 100 parts by weight of the resin. The kneaded resin composition was heated at 165°C for 7 minutes.
The sheet was pressed at 1013 kq/(:n?) to have a thickness of 1, and the tear strength was measured according to JIS K-6772.
結果を第１表に示すが、配合割合の数値はすべて重量部
である。The results are shown in Table 1, and all blending ratio values are in parts by weight.
表−１
米１ ジブブール錫マレート
米２ ジブチル錫ジラウレート
体の引裂き強さは、エチレン・酢酸ビニル・−酸化炭素
共重合体或いはＥＶＡの混合により、大巾に改良される
ことがわかる。Table 1 Rice 1 Dibutyltin malate Rice 2 It can be seen that the tear strength of dibutyltin dilaurate is greatly improved by mixing ethylene/vinyl acetate/carbon oxide copolymer or EVA.
実施例９
参考例１に準じて製造したＴｆｆｌＶＡ２０％を含むＥ
ＶＡ・塩化ビニルクラフト共重合体９０重量部。Example 9 E containing 20% TfflVA produced according to Reference Example 1
90 parts by weight of VA/vinyl chloride kraft copolymer.
ＵＥ７５０１０重量部、ジブチル錫マレート系１．８重
量部、ジブチル錫ジラウレート系１４８重月一部を１５
０℃の熱ロールで５分間混練して均一な樹脂組成物を得
た。この樹脂組成物をフレス条件として１６５℃、７分
、 １００ ｋｇ／ｃｒｄで１問厚みのシートとし、
引裂強度を測定した。この樹脂組成物の引裂強度は５．
１０１ｃｓ＋／Ｃ７！ｔであった。15 parts by weight of UE75010, 1.8 parts by weight of dibutyltin malate system, 148 parts by weight of dibutyltin dilaurate system
A uniform resin composition was obtained by kneading for 5 minutes with a heated roll at 0°C. This resin composition was molded into a sheet with a thickness of 1 inch at 165°C for 7 minutes and 100 kg/crd under fretting conditions.
Tear strength was measured. The tear strength of this resin composition is 5.
101cs+/C7! It was t.
なお、ＥＶＡ２０９Ｊを含むＦｉＶＡ−塩化ビニルグラ
フト共重合体の引裂強度は２．１０ ｋｙ ／ｃｎｒで
あ−、た。The tear strength of the FiVA-vinyl chloride graft copolymer containing EVA209J was 2.10 ky/cnr.
特許出願人 東洋曹達工業株式会社
丁 Ｈ，″、 補 ｊｔミ 書昭和５８年 ６
月３日
１”Ｉｔ１Ｋｌ庁艮信若杉和夫殿
１事ｆ’ｌの表示
（１（（和５８年ｔ（ヶ府）願第 ５１６３８ 号２
発明の名称
塩化ビニル系グラフト共重合体の引裂き強さの改良方法
ろ補正をする者
４袖正命令の１］イー１
自 発
６補正の対象
明細書の特許請求の範囲の欄及び発明の詳細な説明の欄
７補正の内容
〈１）明細書の特許請求の範囲を別紙のとおりに補正す
る。Patent Applicant: Toyo Soda Kogyo Co., Ltd. H., Supplementary Book, 1981, 6
Month 3, 1”It1Kl Agency Atsushi Kazuo Wakasugi 1 thing f'l display (1 ((Japanese 58 year t(gafu) petition No. 51638 No. 2
Title of the invention Method for improving tear strength of vinyl chloride-based graft copolymers Person making amendment 4 Sleeve correction order 1] E 1 Voluntary 6 Claims column of the specification subject to amendment and details of the invention Explanation Column 7 Contents of amendment <1) The claims of the specification are amended as shown in the attached sheet.
（２）同３頁４〜５行、４頁９〜１０行、１８〜１９行
、５頁３〜４行、６〜７行、１０〜１１行、７頁１〜２
行、４〜５行、１５行。(2) Page 3, lines 4-5, page 4, lines 9-10, lines 18-19, page 5, lines 3-4, lines 6-7, lines 10-11, page 7, lines 1-2
rows, 4-5 rows, 15 rows.
１６〜１７行、８頁２〜３行、１６〜１７行。Lines 16-17, page 8, lines 2-3, lines 16-17.
？頁１５行、１０頁２行および１２頁２〜３行に記載の
「エチレン・酢酸ビニル・−酸化炭素共重合体」を［エ
チレン−酢酸ビニルー−酸化炭素共重合体］に訂正する
。? "Ethylene-vinyl acetate-carbon oxide copolymer" written on page 15, line 2 on page 10, and lines 2-3 on page 12 is corrected to "ethylene-vinyl acetate-carbon oxide copolymer".
（３） 同１１頁表外記載の「ジプチル錫マレート」
を「ジブチル錫マレート系」と訂正する。(3) “Diptyltin malate” listed outside the table on page 11
is corrected to "dibutyltin malate".
（４） 同１１頁表外記載の「ジブチル錫ジラウレー
ト」を「ジブチル錫ジラウレート系」と訂正する。(4) "Dibutyltin dilaurate" written outside the table on page 11 is corrected to "dibutyltin dilaurate series."
（５）同１２頁７行および１５〜１６行に記載のＬＥＶ
Ａ・塩化ビニルグラフト共重合体」を「ＥＶＡ−塩化ビ
ニルグラフト共重合体」と訂正する。(5) LEV stated on page 12, lines 7 and 15-16
A. Vinyl chloride graft copolymer" is corrected to "EVA-vinyl chloride graft copolymer."
２、特許請求の範囲
１、 エチレン−酢酸ビニル共重合体１５〜４０重量部
の存在下に塩化ビニルモノマーもしくは塩化ビニルモノ
マーを主体とするモノマー混合物６０〜８５重量部を重
合させることにより得られる塩化ビニル系グラフト共重
合体５０〜９５重量部に、エチレン−酢酸ビニルー−酸
化炭素共重合体および／またはエチレン−酢酸ビニル共
重合体５〜５０重量部を混合することを特徴とする塩化
ビニル系グラフト共重合体の引裂き強さの改良方法。2. Claim 1. Chloride obtained by polymerizing 60 to 85 parts by weight of a vinyl chloride monomer or a monomer mixture mainly composed of vinyl chloride monomers in the presence of 15 to 40 parts by weight of an ethylene-vinyl acetate copolymer. A vinyl chloride graft characterized by mixing 50 to 95 parts by weight of a vinyl graft copolymer with 5 to 50 parts by weight of an ethylene-vinyl acetate-carbon oxide copolymer and/or an ethylene-vinyl acetate copolymer. Method for improving tear strength of copolymers.
２− 塩化ビニル系グラフト共重合体の幹ポリマーで
あるエチレン−酢酸ビニル共重合体の酢酸ビニル含有量
が１０〜５０重量％で、メルトインデックスがＱ、１〜
５ａａｑ７１ａ分の範囲にある特許請求の範囲第１項記
載の改良方法。2- The vinyl acetate content of the ethylene-vinyl acetate copolymer which is the backbone polymer of the vinyl chloride-based graft copolymer is 10 to 50% by weight, and the melt index is Q, 1 to
The improvement method according to claim 1, which is within the range of 5aaq71a.
体中のエチレン含量が５０〜７０重量％、酢酸ビニル含
量が２０〜４０重量％、−酸化炭素含量が５〜２０重量
％の範囲にある特許請求の範囲第１または第２項記載の
改良方法。The improvement method according to claim 1 or 2, wherein the ethylene content in the body is in the range of 50 to 70% by weight, the vinyl acetate content in the range of 20 to 40% by weight, and the -carbon oxide content in the range of 5 to 20% by weight. .
４、塩化ビニル系グラフト共重合体に混合されるエチレ
ン−酢酸ビニル共重合体中の酢酸ビニル含量が２５〜６
０重量％かつメルトインデックスが０．１〜５００９／
１０分の範囲にある特許請求の範囲第１．第２または第
３項記載の改良方法。4. The vinyl acetate content in the ethylene-vinyl acetate copolymer mixed with the vinyl chloride-based graft copolymer is 25 to 6.
0% by weight and melt index 0.1-5009/
Claims No. 1 to 10 minutes. The improvement method described in item 2 or 3.
Claims (1)
の存在下に塩化ビニルモノマーもしくは塩化ビニルモノ
マーを主体とするモノマー混合物６０〜８５重量部を重
合させることにより得られる塩化ビニル系グラフト共重
合体５０〜９５重量部に、エチレン−酢酸ビニルー−酸
化炭素共重合体および／またはエチレン・酢酸ビニル共
重合体５〜５０重量部を混合することを特徴とする塩化
ビニル系グラフト共重合体の引裂き強さの改良方法。 ２、塩化ビニル系グラフト共重合体の幹ポリマーである
エチレン−酢酸ビニル共重合体の酢酸ビニル含有量が１
０〜５０重絹チで、メルトインデックスが０．１〜５０
０ｊ；ｌ７１０分の範囲にある特許請求の範囲第１項記
載の改良方法。 五 エチレン・酢酸ビニル・−酸化炭素共重合体中のエ
チレン含量が５０〜７０重量％、酢酸ビニル含量が２０
〜４０重量％、−酸化炭・素含量が５〜２０重Ｂ′係の
範囲にある特許請求の範囲第１またけ第２項記載の改良
方法。 ４、塩化ビニル系グラフト共重合体に混合されるエチレ
ン酢酸ビニル共重合体中の酢酸ビニル含量が２５〜６０
重量％かつメルトインデックスが０１〜５００ ｇ／
１０分の範囲にある特許請求の範囲第１．第２または第
３項記載の改良方法。[Scope of Claims] 1. Chloride obtained by polymerizing 60 to 85 parts by weight of a vinyl chloride monomer or a monomer mixture mainly composed of vinyl chloride monomers in the presence of 15 to 40 parts by weight of an ethylene-vinyl acetate copolymer. A vinyl chloride graft characterized by mixing 50 to 95 parts by weight of a vinyl graft copolymer with 5 to 50 parts by weight of an ethylene-vinyl acetate-carbon oxide copolymer and/or an ethylene-vinyl acetate copolymer. Method for improving tear strength of copolymers. 2. The vinyl acetate content of the ethylene-vinyl acetate copolymer, which is the backbone polymer of the vinyl chloride-based graft copolymer, is 1.
0-50 heavy silk, melt index 0.1-50
0j; l710 minutes. (5) The ethylene content in the ethylene/vinyl acetate/carbon oxide copolymer is 50 to 70% by weight, and the vinyl acetate content is 20% by weight.
-40% by weight, and the improved method according to Claim 1 and Claim 2, wherein the carbon/element oxide content is in the range of 5 to 20 weight %. 4. The vinyl acetate content in the ethylene vinyl acetate copolymer mixed with the vinyl chloride graft copolymer is 25 to 60.
Weight% and melt index 01-500 g/
Claims No. 1 to 10 minutes. The improvement method described in item 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5163883A JPS59179552A (en) | 1983-03-29 | 1983-03-29 | Improvement in tear strength of vinyl chloride graft copolymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5163883A JPS59179552A (en) | 1983-03-29 | 1983-03-29 | Improvement in tear strength of vinyl chloride graft copolymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59179552A true JPS59179552A (en) | 1984-10-12 |
Family
ID=12892384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5163883A Pending JPS59179552A (en) | 1983-03-29 | 1983-03-29 | Improvement in tear strength of vinyl chloride graft copolymer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59179552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60133041A (en) * | 1983-12-22 | 1985-07-16 | Toyo Soda Mfg Co Ltd | Ethylene-vinyl acetate copolymer composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911617A (en) * | 1972-03-10 | 1974-02-01 | ||
| JPS58103547A (en) * | 1981-12-15 | 1983-06-20 | Tokuyama Sekisui Kogyo Kk | Resin composition for preparing moldings with transparency and superior flexibility |
-
1983
- 1983-03-29 JP JP5163883A patent/JPS59179552A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911617A (en) * | 1972-03-10 | 1974-02-01 | ||
| JPS58103547A (en) * | 1981-12-15 | 1983-06-20 | Tokuyama Sekisui Kogyo Kk | Resin composition for preparing moldings with transparency and superior flexibility |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60133041A (en) * | 1983-12-22 | 1985-07-16 | Toyo Soda Mfg Co Ltd | Ethylene-vinyl acetate copolymer composition |
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