JPS61200142A - Water-absorption polyolefin resin composition - Google Patents
Water-absorption polyolefin resin compositionInfo
- Publication number
- JPS61200142A JPS61200142A JP4016185A JP4016185A JPS61200142A JP S61200142 A JPS61200142 A JP S61200142A JP 4016185 A JP4016185 A JP 4016185A JP 4016185 A JP4016185 A JP 4016185A JP S61200142 A JPS61200142 A JP S61200142A
- Authority
- JP
- Japan
- Prior art keywords
- water
- acrylic acid
- ethylene
- polyolefin resin
- composition
- 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.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、吸水性ポリオレフィン樹脂組成物に関し、吸
水性が要求される各種包装用、建築用、農業用等資材と
して用いるに好適な吸水性ポリオレフィン樹脂組成物に
関する。Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a water-absorbing polyolefin resin composition, which is suitable for use as various packaging, construction, agricultural, and other materials that require water absorption. The present invention relates to a polyolefin resin composition.
（ロ）従来の技術
ポリオレフィン樹脂は、その浸れた成形加工性、機械的
性質、イヒ学的性質等を生かして、フィルム、シート、
各種形状の容器等に成形され、包装用、建築用、農業用
等資材として広く用いられているが、本来吸水性を持た
ないため、吸水性が要求大れる用途にお論では積極的使
用が計られていない。(b) Conventional technology Polyolefin resins take advantage of their excellent moldability, mechanical properties, chemical properties, etc. to produce films, sheets, etc.
It is formed into containers of various shapes and is widely used as a material for packaging, construction, agriculture, etc. However, since it does not inherently have water absorbency, it cannot be actively used in applications that require high water absorption. Not measured.
一方、近年、ポリアクリル酸系等の各種吸水性樹脂が開
発され、その優れた吸水能力を生かして衛生用品等に用
いられているが、これら吸水性樹脂は、成形加工性、機
械的性質等が劣るため用途が限られている。On the other hand, in recent years, various water-absorbing resins such as polyacrylic acid-based resins have been developed and are used in sanitary products etc. by taking advantage of their excellent water-absorbing ability. Its uses are limited due to its inferior properties.
０→発明が解決しようとする問題点
本発明者らは、ポリアクリル酸系吸水性樹脂をブレンド
することによってポリオレフィン樹脂に吸水性を付与す
べく種々検討を行なった結果、エチレン−アクリル酸共
重合体の使用が有効であることを見出し、本発明に到っ
たものである。0→Problems to be Solved by the Invention The present inventors have conducted various studies to impart water absorbency to polyolefin resins by blending polyacrylic acid-based water absorbing resins, and as a result, they have developed an ethylene-acrylic acid copolymer. We have found that the use of combination is effective and have arrived at the present invention.
に）問題点を解決するための手段
本発明の吸水性ポリオレフィン樹脂組成物は、以下詳述
すれば、エチレン−アクリル酸共重合体を必須成分とす
るポリオレフィン樹脂８０〜９９（１ｉ４ｉ％と、ボ１
１アクリル酸系吸水性樹脂２００１重ｆ＋幅とからなる
。2) Means for Solving the Problems The water-absorbing polyolefin resin composition of the present invention will be described in detail below. 1
1 acrylic acid water absorbent resin 2001 weight f + width.
ここで、ポリオレフィン樹１１旨とは、ポリエチレン、
エチレン−プロピレン共重合体、エチレン−ブテン−を
共ｔｉ合ｔ＆、エチレン−酢酸ビニル共重合体、エチレ
ン−アクリル酸共重合体、エチレン−アクリル凌エステ
ル共重合体、ポリプロピレン、プロピレン−エチレン共
重合体等、一般に包装用、農業用等資材として使用され
ているものをいう。Here, the polyolefin tree 11 refers to polyethylene,
Ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic ester copolymer, polypropylene, propylene-ethylene copolymer etc., which are generally used as materials for packaging, agriculture, etc.
なかで、本発明にお１ハでは、エチレン−アクリル酸共
重合体を必須成分とする。このエチレン−アクリル酸共
重合体とは、詳細には、エチレンと、アクリル酸との共
重合体、メタクリル酸、α−エチルアクリル酸等のアク
リル酸誘導体との共重合体、および、これら共重合１本
の酸部分の全部または一部が１〜３価の金属イオンによ
り中和されたイオン性共重合体金いう。これら共重合体
中に占めるアクリル！１１部分の含有量は、５重着係未
満では後述するポリアクリル唆系吸水１生四脂の均一分
散が困難となり、また５００重量％越えるとポリオレフ
ィン・ｌ２ｆ１１旨が本来持っている緒特性を損なう本
のとなることから、５〜５０重ｔ％とするのが好ましい
。Among them, in the first step of the present invention, an ethylene-acrylic acid copolymer is an essential component. This ethylene-acrylic acid copolymer specifically refers to copolymers of ethylene and acrylic acid, copolymers of acrylic acid derivatives such as methacrylic acid and α-ethyl acrylic acid, and copolymers of these. Gold is an ionic copolymer in which all or part of one acid moiety is neutralized with a monovalent to trivalent metal ion. Acrylic in these copolymers! If the content of part 11 is less than 5% by weight, it will be difficult to uniformly disperse the polyacrylic-based water-absorbing fat described below, and if it exceeds 500% by weight, the inherent properties of the polyolefin l2f11 will be impaired. Since it becomes a book, it is preferable to set it as 5-50 weight t%.
なお、本発明において、ポリオレフィン樹脂中に占メる
エチレン−アクリル酸共重合体の割合は、５重量％以上
とするのが好ましく、５Ｔｆ９４未満では、後述する吸
水性樹１ｉｆｔの均一分散が困難となり、組成′吻成形
品とした時の吸水性、機械的強度等に問題を生じること
になる。なお１００重毫壬であってもよい。In the present invention, the proportion of the ethylene-acrylic acid copolymer in the polyolefin resin is preferably 5% by weight or more, and if it is less than 5Tf94, it will be difficult to uniformly disperse the water-absorbing tree 1ift described below. However, when the composition is made into a molded product, problems arise in terms of water absorption, mechanical strength, etc. Note that it may be 100 heavy weights.
また、ポリアクリル酸系吸水性樹脂としては、アクリル
酸、メタクリル酸、アクリル酸アルカリ金属塩、メタク
リル酸アルカリ金属塩等の単独または共重合体の自己架
橋物、または細手段による架橋物等、公知のものが使用
できる。In addition, examples of the polyacrylic acid-based water absorbent resin include self-crosslinked products of acrylic acid, methacrylic acid, alkali metal salts of acrylic acid, alkali metal salts of methacrylate, etc. alone or in copolymers, or crosslinked products by detailed means, etc. can be used.
本発明組成物は、前記ポリオレフィン樹脂８０〜９９．
９重量％、好ましくは９０〜９９．５重量％と、ポリア
クリル酸系吸水性樹脂２０〜０，１重量％、好ましくは
１０〜０．５重を壬とからなる。吸水性樹脂が０．１重
を幅未満では吸水性不良となり、２００重量％越えると
ポリオレフィン樹脂への分散が困難となって組成物成形
品としての機械的強度に問題を生じることになる。The composition of the present invention comprises the polyolefin resin 80 to 99.
9% by weight, preferably 90-99.5% by weight, and 20-0.1% by weight, preferably 10-0.5% by weight of a polyacrylic acid water absorbent resin. If the water-absorbing resin is less than 0.1% by weight, the water-absorbing property will be poor, and if it exceeds 200% by weight, it will be difficult to disperse in the polyolefin resin, resulting in problems with the mechanical strength of the composition molded product.
エチレン−アクリル酸共重合体を必須成分とするポリオ
レフィン樹脂とポリアクリル酸系吸水性樹脂とは、必要
に応じて他の助剤、特には後述する発泡剤、を添加して
、−軸あるいは二軸押出機、バンバリーミキサ−、ニー
ダ−、ミキシングロール等の公知の方法で溶融混練する
ことにより組成物と々される。この際、エチレン−アク
リル酸共重合体以外のボ１１オレフィン樹脂も用いる場
合には、吸水性樹脂とエチレン−アクリル酸共重合体を
先に溶融混練し、この混練物とポリオレフィン樹脂を溶
融混練することとした方が均一分散性の向上を計ること
ができる。Polyolefin resins and polyacrylic acid-based water-absorbing resins containing an ethylene-acrylic acid copolymer as an essential component can be prepared by adding other auxiliary agents, especially the blowing agents described below, as necessary. The composition is prepared by melt-kneading using a known method such as a screw extruder, Banbury mixer, kneader, or mixing roll. At this time, if a B11 olefin resin other than the ethylene-acrylic acid copolymer is used, the water-absorbing resin and the ethylene-acrylic acid copolymer are melt-kneaded first, and the kneaded product and the polyolefin resin are melt-kneaded. It is possible to improve the uniform dispersibility by setting this to a specific value.
本発明組成物は、ポリオレフィン樹脂において汎用され
ている押出成形法、射出成形法、中空成形法等、さらに
は延伸成形、発泡成形法等種々の成形法により、フィル
ム、シート、その他者種形状の成形品に成形される。The composition of the present invention can be formed into films, sheets, and other shapes by various molding methods such as extrusion molding, injection molding, and blow molding, which are widely used for polyolefin resins, as well as stretch molding and foam molding. Molded into a molded product.
なお、本発明の吸水性ポリオレフィン嘆詣組成物社、発
泡成形品とすることにより吸水性の一層の向上を計るこ
とができる。この場合、本発明組成物には、さらに、ア
ゾジカルボン了ミド、アゾビスイソブチロニトリル、ジ
ニトロソペンタメチレンテトラミン、炭酸水素ナトリウ
ムとクエン酸モノまたはトリナトリウムとの混合・吻等
の公知の化学発泡剤を、本発明組成物１００重量部に対
して０．０５〜５重情部添卯しておけばよい。また、さ
らには架橋剤を添加して発泡成形品を架橋させることに
より、発泡セルの形態および均一性を向上させることが
できる。In addition, by forming the water-absorbing polyolefin composition of the present invention into a foamed molded product, the water-absorbing property can be further improved. In this case, the composition of the present invention may further include known chemicals such as azodicarbonate, azobisisobutyronitrile, dinitrosopentamethylenetetramine, a mixture of sodium bicarbonate and mono- or trisodium citrate, etc. The foaming agent may be added in an amount of 0.05 to 5 parts per 100 parts by weight of the composition of the present invention. Furthermore, by adding a crosslinking agent to crosslink the foamed molded product, the morphology and uniformity of the foamed cells can be improved.
本発明組成物は、これらの方法により成形品とされ、例
えば、生鮮野菜の包装用フィルム、鮮魚肉の包装用トレ
ー、壁紙、種子の発芽および育苗用シート等、各種の用
途に使用できるものである。The composition of the present invention can be made into molded products by these methods and can be used for various purposes, such as packaging films for fresh vegetables, trays for packaging fresh fish meat, wallpaper, and sheets for seed germination and seedling raising. be.
（用件用
本発明の吸水性ポリオレフィン樹脂組成物は、ポリオレ
フィン樹１１旨としてエチレン−アクリル酸共重合体を
必須成分としているので、ポリアクＩＪル酸系吸水性樹
脂の均一分散を可能とし、よって、ポリオレフィン樹脂
が木来持っている緒特性を損なうことなしに、ポリオレ
フィン樹脂に吸水性を付与することができるものである
。(Usage) Since the water-absorbing polyolefin resin composition of the present invention has an ethylene-acrylic acid copolymer as an essential component as the polyolefin resin, it enables uniform dispersion of the polyacrylic acid-based water-absorbing resin, and thus , it is possible to impart water absorbency to a polyolefin resin without impairing the inherent properties of the polyolefin resin.
（１実施例
実施例１
エチレン−アクリル酸共重合体（アクリル酸含有−！１
−７重量壬重量層トインデックス１０２／１０分）９８
重’ｉｆｒ％とポリアクリル酸ナトリウム架橋物（梨鉄
化学工業社堰、「アクアキープ１０ＳＨ」）２重量幅と
の組成物を用い、インフレーション成形法で曜み１５０
ｐのフィルムを成形した。(1 Example Example 1 Ethylene-acrylic acid copolymer (acrylic acid-containing-!1
-7 weight layer index 102/10 minutes) 98
Using a composition of 15% weight and 2 weight range of sodium polyacrylate cross-linked product (Nitetsu Kagaku Kogyo Co., Ltd., "Aqua Keep 10SH"), it was molded using an inflation molding method.
A film of p was molded.
実施例２
実施例１の組成物１００重量部に対して、発泡剤として
炭酸水素ナトリウムとクエン酸モノナトリウムとの混合
物（三菱油化ファイン社規、［ハイドロセロールＪ ）
０．８重量部をさらに添加した組成物を用ｂ、インフレ
ーション成形法で発泡倍率２倍、厚み０．３ＩＩ１ｍｌ
のシートを成形した。Example 2 A mixture of sodium hydrogen carbonate and monosodium citrate as a blowing agent (Mitsubishi Yuka Fine Co., Ltd., [Hydrocellol J)] was added to 100 parts by weight of the composition of Example 1.
A composition to which 0.8 parts by weight was further added was used, and the foaming ratio was 2 times and the thickness was 0.3 II 1 ml using the inflation molding method.
A sheet was formed.
実施例３
実施列２におけるエチレン−アクリル酸共重合体に代え
て、ポリエチレン（三菱油化社夷、「ユカロン）（Ｅ６
０ｊ）７００重量とエチレン−アクリル酸共重合体（ア
クリル酸含有贅１５重を鴫、メルトインデックスｌ Ｏ
ｆ／１ ｏｆ＋＋２８重量俤との重量物を用いた外は、
実権例２と同様にして発泡倍率２倍、厚みＯｏ−３ｔの
シートを成形した。Example 3 Instead of the ethylene-acrylic acid copolymer in Example 2, polyethylene (Mitsubishi Yuka Co., Ltd., "Yukalon") (E6
0j) 700 weight and ethylene-acrylic acid copolymer (acrylic acid-containing weight 15 weight), melt index l O
Except for using a heavy object with f/1 of++28 weight,
A sheet having a foaming ratio of 2 times and a thickness of Oo-3t was molded in the same manner as in Example 2.
比較例１
実権例１におけるエチレン−アクリル酸４ｔ４ｉ合体に
代えて、実施例３において用いたと同じポリエチレンを
用いた他は、実施例１と同様にして厚み１５０μのフィ
ルムを成形した。Comparative Example 1 A film having a thickness of 150 μm was molded in the same manner as in Example 1, except that the same polyethylene used in Example 3 was used in place of the ethylene-acrylic acid 4t4i combination in Actual Example 1.
比較例２
実施例２におけるエチレン−アクリル酸共重合体に代え
て、実施例３において用Ａだと同じポリエチレンを用い
た他は、実施例２と同様にして発泡倍率２倍、厚み０．
３ ｍのシートを成形した。Comparative Example 2 The same procedure was used as in Example 2, except that the same polyethylene as used in Example A in Example 3 was used in place of the ethylene-acrylic acid copolymer in Example 2, with a foaming ratio of 2 times and a thickness of 0.
A 3 m sheet was formed.
各実施例、比較例のサンプルについて、５０℃の温水に
２４時間浸漬した後の吸水率を重量変化により測定した
。結果を表に示す。For the samples of each example and comparative example, the water absorption rate after immersion in 50° C. hot water for 24 hours was measured based on weight change. The results are shown in the table.
（ト）発明の効果
本発明の吸水性ポリオレフィン樹脂組成物は、ポリオレ
フィン樹脂に優れた吸水性を付与するものである。(G) Effects of the Invention The water-absorbing polyolefin resin composition of the present invention imparts excellent water-absorbing properties to polyolefin resins.
特許出願人 三菱油化株式会社 代理人 弁理士 古 川 秀 利 （ほか１名）Patent applicant: Mitsubishi Yuka Co., Ltd. Agent: Patent Attorney Hidetoshi Furukawa (1 other person)
Claims (1)
レフィン樹脂８０〜９９．９重量％と、ポリアクリル酸
系吸水性樹脂２０〜０．１重量％とからなる吸水性ポリ
オレフィン樹脂組成物。A water-absorbing polyolefin resin composition comprising 80-99.9% by weight of a polyolefin resin containing an ethylene-acrylic acid copolymer as an essential component and 20-0.1% by weight of a polyacrylic acid-based water-absorbing resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4016185A JPS61200142A (en) | 1985-02-28 | 1985-02-28 | Water-absorption polyolefin resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4016185A JPS61200142A (en) | 1985-02-28 | 1985-02-28 | Water-absorption polyolefin resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61200142A true JPS61200142A (en) | 1986-09-04 |
Family
ID=12573034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4016185A Pending JPS61200142A (en) | 1985-02-28 | 1985-02-28 | Water-absorption polyolefin resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61200142A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62215647A (en) * | 1986-03-17 | 1987-09-22 | Nippon Telegr & Teleph Corp <Ntt> | Water absorbing resin composition |
| US5169728A (en) * | 1989-06-26 | 1992-12-08 | The Dow Chemical Company | Multilayered film |
| JP2002128964A (en) * | 2000-10-20 | 2002-05-09 | Du Pont Mitsui Polychem Co Ltd | Water vapor permeable material |
| US6476137B1 (en) * | 1998-04-16 | 2002-11-05 | Cryovac, Inc. | Ternary polymer blend, the film containing it, and the easy-to-open package made therewith |
| JP2014506946A (en) * | 2011-02-18 | 2014-03-20 | ボスパック シーオー．，エルティーディ． | Resin composition for moisture-absorbing film, moisture-absorbing film for packaging, and method for producing the same |
-
1985
- 1985-02-28 JP JP4016185A patent/JPS61200142A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62215647A (en) * | 1986-03-17 | 1987-09-22 | Nippon Telegr & Teleph Corp <Ntt> | Water absorbing resin composition |
| US5169728A (en) * | 1989-06-26 | 1992-12-08 | The Dow Chemical Company | Multilayered film |
| US6476137B1 (en) * | 1998-04-16 | 2002-11-05 | Cryovac, Inc. | Ternary polymer blend, the film containing it, and the easy-to-open package made therewith |
| JP2002128964A (en) * | 2000-10-20 | 2002-05-09 | Du Pont Mitsui Polychem Co Ltd | Water vapor permeable material |
| JP2014506946A (en) * | 2011-02-18 | 2014-03-20 | ボスパック シーオー．，エルティーディ． | Resin composition for moisture-absorbing film, moisture-absorbing film for packaging, and method for producing the same |
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