JPH11293068A - Resin composition - Google Patents

Resin composition

Info

Publication number
JPH11293068A
JPH11293068A JP11418098A JP11418098A JPH11293068A JP H11293068 A JPH11293068 A JP H11293068A JP 11418098 A JP11418098 A JP 11418098A JP 11418098 A JP11418098 A JP 11418098A JP H11293068 A JPH11293068 A JP H11293068A
Authority
JP
Japan
Prior art keywords
resin
vinyl acetate
ethylene
evoh
modified
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.)
Withdrawn
Application number
JP11418098A
Other languages
Japanese (ja)
Inventor
Tomoyuki Yamamoto
友之 山本
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.)
Nippon Synthetic Chemical Industry Co Ltd
Original Assignee
Nippon Synthetic Chemical Industry 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 Nippon Synthetic Chemical Industry Co Ltd filed Critical Nippon Synthetic Chemical Industry Co Ltd
Priority to JP11418098A priority Critical patent/JPH11293068A/en
Publication of JPH11293068A publication Critical patent/JPH11293068A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a composition excellent in impact resistance by mixing a saponified ethylene/vinyl acetate copolymer with a thermoplastic resin and subjecting the resultant mixture to the microwave irradiation. SOLUTION: The titled composition is obtained by mixing (A) a saponified ethylene/vinyl acetate copolymer with (B) a thermoplastic resin such as a polyolefin resin, a polyamide resin, a polyester resin or the like in a wt. ratio of A/B of 1/99-60/40 and optionally further with an antioxidant, a plasticizer, a lubricant and the like, and subjecting the resultant mixture to the microwave irradiation at a frequency of 2.45 GHz and an intensity of 4-40 Mrad for 1-300 see using a microwave irradiation apparatus having an output power of 0.1-2 kW. The saponified ethylene/vinyl acetate copolymer preferably has an ethylene content of 10-60 mole % and a saponification degree of vinyl acetate of at least 90 mole %, and if necessary, there can be employed a modified ethylene/ vinyl acetate copolymer such as one modified with at least one 3-30C α-olefin and ethylene, one modified by grafting thereunto an acrylic ester, or the like.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、エチレン−酢酸ビ
ニル共重合体ケン化物(以下、EVOHと略記する)と
熱可塑性樹脂からなる樹脂組成物に関する。
The present invention relates to a resin composition comprising a saponified ethylene-vinyl acetate copolymer (hereinafter abbreviated as EVOH) and a thermoplastic resin.

【0002】[0002]

【従来の技術】従来より、EVOHは、透明性、帯電防
止性、耐油性、耐溶剤性、ガスバリヤー性、保香性等の
特性を生かして、ポリオレフィン系樹脂と積層して各種
包装用途等に多用されている。ガソリンタンク、ボト
ル、チューブ、カップ等の用途においては、これらの成
形品のコスト低減のためにスプラップ(リグラインド)
層を設けるのが普通であるが、ポリオレフィン系樹脂と
EVOHの相溶性が悪いため、該スクラップ(リグライ
ンド)層の耐衝撃性はあまり良好でない場合が多く、か
かる対策として、通常は、ポリオレフィン系樹脂とEV
OHの相溶性を向上させるためにマレイン酸変性ポリオ
レフィン系樹脂等の相溶化剤を添加することが行われて
いる。
2. Description of the Related Art Conventionally, EVOH is laminated with a polyolefin resin by utilizing its properties such as transparency, antistatic property, oil resistance, solvent resistance, gas barrier property and fragrance retention property, for various packaging applications. It is frequently used in In applications such as gasoline tanks, bottles, tubes, cups, etc., to reduce the cost of these molded products, scrap (regrind)
Although a layer is usually provided, the impact resistance of the scrap (regrind) layer is often not so good because of the poor compatibility between the polyolefin resin and EVOH. Resin and EV
In order to improve the compatibility of OH, a compatibilizing agent such as a maleic acid-modified polyolefin resin is added.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記の
方法では、実用的な耐衝撃性を得るためには多量の相溶
化剤を添加する必要であるばかりか、成形(押出)加工
中に該相溶化剤とEVOHが反応してゲルやブツを発生
して製品の外観性を著しく低下させる恐れがあり、新な
る改良が望まれるところである。
However, in the above-mentioned method, not only a large amount of a compatibilizer must be added to obtain a practical impact resistance, but the phase There is a possibility that the solubilizer reacts with EVOH to generate gels and lumps, thereby significantly reducing the appearance of the product, and new improvements are desired.

【0004】[0004]

【課題を解決するための手段】そこで、本発明者はかか
る事情に鑑みて鋭意研究を重ねた結果、EVOHと熱可
塑性樹脂からなり、かつマイクロ波で照射処理されてな
る樹脂組成物が、上記の課題を解決することを見出し本
発明を完成するに至った。
The present inventors have conducted intensive studies in view of the above circumstances, and as a result, have found that a resin composition comprising EVOH and a thermoplastic resin, which has been subjected to microwave irradiation treatment, has been described above. The present inventors have found that the above-mentioned problems have been solved and completed the present invention.

【0005】[0005]

【発明の実施の形態】以下、本発明を具体的に説明す
る。本発明に用いられるEVOHとしては、特に限定さ
れないが、エチレン含量10〜60モル%、好ましくは
20〜60モル%、更に好ましくは25〜55モル%、
酢酸ビニル成分のケン化度が90モル%以上、好ましく
は95モル%以上のものが用いられ、エチレン含量が1
0モル%未満では耐水性が不十分となり、一方60モル
%を越えるとガスバリヤー性が低下して好ましくない。
又、ケン化度が90モル%未満では耐水性が不十分とな
って好ましくない。
BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below. The EVOH used in the present invention is not particularly limited, but has an ethylene content of 10 to 60 mol%, preferably 20 to 60 mol%, more preferably 25 to 55 mol%,
A vinyl acetate component having a degree of saponification of at least 90 mol%, preferably at least 95 mol% is used.
If the amount is less than 0 mol%, the water resistance becomes insufficient. On the other hand, if it exceeds 60 mol%, the gas barrier property decreases, which is not preferable.
On the other hand, if the saponification degree is less than 90 mol%, the water resistance becomes insufficient, which is not preferable.

【0006】又、該EVOHは必要に応じて、種々変性
されていても良く、又該変性EVOHと上記EVOHの
混合物でも良い。該変性EVOHとしては、例えば、プ
ロピレン、イソブテン等による変性EVOH、炭素数3
〜30のα−オレフィンの少なくとも1種又は炭素数3
〜30のα−オレフィンの少なくとも1種とエチレンに
よる変性EVOH、アクリル酸エステルをグラフト重合
して得られる変性EVOH、(メタ)アクリル酸エステ
ル−エチレン−酢酸ビニルからなる3元共重合体をケン
化して得られる変性EVOH、EVOHの水酸基をシア
ノエチル基により変性した変性EVOH、ポリエステル
をビニルアルコールと解重合反応させてなるポリエステ
ルグラフト物を含有する変性EVOH、酢酸ビニル−エ
チレン−ケイ素含有オレフィン性不飽和単量体の共重合
体をケン化して得られる変性EVOH、ピロリドン環含
有単量体−エチレン−酢酸ビニルからなる3元共重合体
をケン化して得られる変性EVOH、アクリルアミド−
エチレン−酢酸ビニルからなる3元共重合体をケン化し
て得られる変性EVOH、酢酸アリル−エチレン−酢酸
ビニルからなる3元共重合体をケン化して得られる変性
EVOH、酢酸イソプロペニル−エチレン−酢酸ビニル
からなる3元共重合体をケン化して得られる変性EVO
H、ポリエーテル成分がEVOHの末端に付加している
変性EVOH、ポリエーテル成分がEVOHの枝ポリマ
ーとしてグラフト状に付加している変性EVOH、アル
キレンオキサイドがEVOHに付加した変性EVOH等
が挙げられる。
[0006] The EVOH may be variously modified, if necessary, or may be a mixture of the modified EVOH and the EVOH. As the modified EVOH, for example, modified EVOH with propylene, isobutene, etc., having 3 carbon atoms
At least one α-olefin having from 30 to 30 carbon atoms or 3 carbon atoms
Saponified terpolymer comprising modified EVOH, modified EVOH obtained by graft polymerization of at least one α-olefin of at least 30 and ethylene and acrylic acid ester, and (meth) acrylate-ethylene-vinyl acetate Modified EVOH, a modified EVOH obtained by modifying the hydroxyl group of EVOH with a cyanoethyl group, a modified EVOH containing a polyester graft obtained by depolymerizing a polyester with vinyl alcohol, a vinyl acetate-ethylene-silicon-containing olefinically unsaturated monomer EVOH obtained by saponifying a monomeric copolymer, modified EVOH obtained by saponifying a terpolymer comprising a pyrrolidone ring-ethylene-vinyl acetate, acrylamide-
Modified EVOH obtained by saponifying a terpolymer of ethylene-vinyl acetate, modified EVOH obtained by saponifying a terpolymer of allyl acetate-ethylene-vinyl acetate, isopropenyl acetate-ethylene-acetic acid Modified EVO obtained by saponifying vinyl terpolymer
H, modified EVOH in which a polyether component is added to the terminal of EVOH, modified EVOH in which a polyether component is added in a graft form as a branch polymer of EVOH, and modified EVOH in which an alkylene oxide is added to EVOH.

【0007】本発明で用いられるEVOHには、必要に
応じて、酸化防止剤、可塑剤、滑剤、アンチブロッキン
グ剤、着色剤、帯電防止剤、紫外線吸収剤等を添加する
こともできる。
[0007] If necessary, an antioxidant, a plasticizer, a lubricant, an antiblocking agent, a coloring agent, an antistatic agent, an ultraviolet absorber and the like can be added to the EVOH used in the present invention.

【0008】又、EVOHは上記以外のα−オレフィ
ン、不飽和カルボン酸又はその塩・部分アルキルエステ
ル・完全アルキルエステル・ニトリル・アミド・無水
物、不飽和スルホン酸又はその塩等のコモノマーを含ん
でいても差支えない。
The EVOH contains comonomer other than the above, such as α-olefins, unsaturated carboxylic acids or salts thereof, partial alkyl esters, complete alkyl esters, nitriles, amides, anhydrides, unsaturated sulfonic acids or salts thereof. You can be there.

【0009】また、上記のEVOHにブレンドされる熱
可塑性樹脂としては、直鎖状低密度ポリエチレン、低密
度ポリエチレン、中密度ポリエチレン、高密度ポリエチ
レン、エチレン−酢酸ビニル共重合体、アイオノマー、
エチレン−プロピレン共重合体、エチレン−アクリル酸
エステル共重合体、ポリプロピレン、プロピレン−α−
オレフィン(炭素数4〜20のα−オレフィン)共重合
体、ポリブテン、ポリペンテン等のオレフィンの単独又
は共重合体、或いはこれらのオレフィンの単独又は共重
合体を不飽和カルボン酸又はそのエステルでグラフト変
性したもの等の広義のポリオレフィン系樹脂、ポリスチ
レン系樹脂、ポリエステル、ポリアミド、共重合ポリア
ミド、ポリ塩化ビニル、ポリ塩化ビニリデン、アクリル
系樹脂、ビニルエステル系樹脂、ポリエステルエラスト
マー、ポリウレタンエラストマー、塩素化ポリエチレ
ン、塩素化ポリプロピレン等を挙げることができ、中で
もポリオレフィン系樹脂、ポリアミド系樹脂、ポリエス
テル系樹脂、ポリスチレン系樹脂が好適に用いられる。
The thermoplastic resin blended with the EVOH includes linear low-density polyethylene, low-density polyethylene, medium-density polyethylene, high-density polyethylene, ethylene-vinyl acetate copolymer, ionomer,
Ethylene-propylene copolymer, ethylene-acrylate copolymer, polypropylene, propylene-α-
Olefin (C4-20 alpha-olefin) copolymer, homo- or copolymer of olefin such as polybutene, polypentene, or graft-modification of homo- or copolymer of these olefins with unsaturated carboxylic acid or ester thereof Polyolefin resin, polystyrene resin, polyester, polyamide, copolymerized polyamide, polyvinyl chloride, polyvinylidene chloride, acrylic resin, vinyl ester resin, polyester elastomer, polyurethane elastomer, chlorinated polyethylene, chlorine Polyolefin-based resin, polyamide-based resin, polyester-based resin, and polystyrene-based resin are preferably used.

【0010】上記のEVOHと熱可塑性樹脂のブレンド
比(重量比)は特に限定されず、又熱可塑性樹脂の種類
や用途により、一概に言えないが、通常はEVOH/熱
可塑性樹脂=1/99〜60/40が好ましく、更には
2/98〜50/50で、該ブレンド比が、60/40
を越えるとマイクロ波照射時に樹脂組成物が溶融する恐
れがあり、逆に1/99未満ではマイクロ波照射時の効
果が十分に発揮されない恐れがあって好ましくない。
The blend ratio (weight ratio) of the above EVOH and the thermoplastic resin is not particularly limited, and cannot be specified unconditionally depending on the type and use of the thermoplastic resin, but usually, EVOH / thermoplastic resin = 1/99. 6060/40, more preferably 2 / 98-50 / 50, and the blend ratio is 60/40.
If it exceeds, the resin composition may be melted at the time of microwave irradiation, and if it is less than 1/99, the effect at the time of microwave irradiation may not be sufficiently exhibited, which is not preferable.

【0011】本発明においては、上記の如きEVOHと
熱可塑性樹脂のブレンド物が、マイクロ波で照射処理が
されていることに最大の特徴を有するもので、かかる方
法について説明する。
In the present invention, the above-mentioned blend of EVOH and thermoplastic resin has the most characteristic feature that it has been subjected to irradiation treatment with microwaves, and such a method will be described.

【0012】本発明において、マイクロ波を照射させる
ためには、例えば、商用周波数が2.45GHzで、電
力0.1〜2kwのマイクロ波発生装置を用いればよ
く、かかるマイクロ波の照射時間としては、1〜300
秒が好ましく、かかる時間が1秒未満では、照射の効果
が期待できず、逆に300秒を越えるとEVOHが加熱
されすぎて熱可塑性樹脂も溶融する恐れがある。更に好
ましくは2〜180秒である。また、このときのマイク
ロ波の強度としては、4〜40Mrad(更には5〜3
5Mrad)が好ましく、4Mrad未満では、十分な
効果を得ることができず、逆に40Mradを越えると
マイクロ波の強度が強すぎて組成物が分解する恐れがあ
って好ましくない。
In the present invention, in order to irradiate microwaves, for example, a microwave generator having a commercial frequency of 2.45 GHz and a power of 0.1 to 2 kW may be used. , 1-300
Seconds are preferable. If the time is less than 1 second, the effect of irradiation cannot be expected. If the time exceeds 300 seconds, the EVOH is excessively heated and the thermoplastic resin may be melted. More preferably, it is 2 to 180 seconds. The intensity of the microwave at this time is 4 to 40 Mrad (further 5 to 3
5 Mrad) is preferable, and if it is less than 4 Mrad, a sufficient effect cannot be obtained. Conversely, if it exceeds 40 Mrad, the intensity of microwaves is too strong and the composition may be decomposed, which is not preferable.

【0013】本発明において、該ブレンド物に上記の如
きマイクロ波照射をするにあたっては、特に限定されな
いが、該ブレンドをシート状にしてから照射することが
好ましく、このときは照射表面に水滴等の付着が無いこ
とが好ましい。
In the present invention, the above-mentioned microwave irradiation to the blend is not particularly limited. However, it is preferable to irradiate the blend after forming the sheet into a sheet shape. Preferably, there is no adhesion.

【0014】かくして、本発明の樹脂組成物が得られる
わけであるが、かかる樹脂組成物は成形物の用途に多用
され、溶融成形等によりペレット、フィルム、シート、
容器、繊維、棒、管、各種成形品等に成形され、又、こ
れらの粉砕品(回収品を再使用する時など)やペレット
を用いて再び溶融成形に供することもでき、かかる溶融
成形方法としては、押出成形法(T−ダイ押出、インフ
レーション押出、ブロー成形、溶融紡糸、異型押出
等)、射出成形法が主として採用される。溶融成形温度
は、150〜300℃の範囲から選ぶことが多い。ま
た、本発明で得られた樹脂組成物は、単層として用いる
ことができるが、前述のように、特に積層体用途に供し
た時に本発明の作用効果を十分に発揮することができ、
具体的には該樹脂組成物からなる層の少なくとも片面に
熱可塑性樹脂層等を積層して多層積層体として用いるこ
とが有用である。
Thus, the resin composition of the present invention is obtained. Such a resin composition is frequently used for molded articles, and is used for pellets, films, sheets, and the like by melt molding or the like.
It can be formed into containers, fibers, rods, tubes, various molded products, etc., and can also be subjected to melt molding again using these pulverized products (such as when reused products) and pellets. As the method, an extrusion molding method (T-die extrusion, inflation extrusion, blow molding, melt spinning, profile extrusion, etc.) and an injection molding method are mainly employed. The melt molding temperature is often selected from the range of 150 to 300 ° C. In addition, the resin composition obtained in the present invention can be used as a single layer, but as described above, the effect of the present invention can be sufficiently exerted, particularly when the composition is used for a laminate.
Specifically, it is useful to laminate a thermoplastic resin layer or the like on at least one surface of a layer made of the resin composition and use it as a multilayer laminate.

【0015】該積層体を製造するに当たっては、該樹脂
組成物の層の片面又は両面に他の基材を積層するのであ
るが、積層方法としては、例えば該樹脂組成物のフィル
ムやシートに熱可塑性樹脂を溶融押出する方法、逆に熱
可塑性樹脂等の基材に該樹脂組成物を溶融押出する方
法、該樹脂組成物と他の熱可塑性樹脂とを共押出する方
法、更には本発明で得られた樹脂組成物のフィルムやシ
ートと他の基材のフィルム、シートとを有機チタン化合
物、イソシアネート化合物、ポリエステル系化合物、ポ
リウレタン化合物等の公知の接着剤を用いてドライラミ
ネートする方法等が挙げられる。
In producing the laminate, another substrate is laminated on one side or both sides of the layer of the resin composition. The laminating method is, for example, a method in which a film or sheet of the resin composition is heated. A method of melt-extruding a thermoplastic resin, a method of melt-extruding the resin composition on a base material such as a thermoplastic resin, a method of co-extrusion of the resin composition with another thermoplastic resin, and further a method of the present invention. A method of dry laminating a film or sheet of the obtained resin composition and a film or sheet of another substrate with a known adhesive such as an organic titanium compound, an isocyanate compound, a polyester compound, or a polyurethane compound, and the like. Can be

【0016】共押出の場合の相手側樹脂としては直鎖状
低密度ポリエチレン、低密度ポリエチレン、中密度ポリ
エチレン、高密度ポリエチレン、エチレン−酢酸ビニル
共重合体、アイオノマー、エチレン−プロピレン共重合
体、エチレン−アクリル酸エステル共重合体、ポリプロ
ピレン、プロピレン−α−オレフィン(炭素数4〜20
のα−オレフィン)共重合体、ポリブテン、ポリペンテ
ン等のオレフィンの単独又は共重合体、或いはこれらの
オレフィンの単独又は共重合体を不飽和カルボン酸又は
そのエステルでグラフト変性したものなどの広義のポリ
オレフィン系樹脂、ポリエステル、ポリアミド、共重合
ポリアミド、ポリ塩化ビニル、ポリ塩化ビニリデン、ア
クリル系樹脂、ポリスチレン、ビニルエステル系樹脂、
ポリエステルエラストマー、ポリウレタンエラストマ
ー、塩素化ポリエチレン、塩素化ポリプロピレン等が挙
げられる。EVOHも共押出可能である。上記のなかで
も、共押出製膜の容易さ、フィルム物性(特に強度)の
実用性の点から、ポリプロピレン、ポリアミド、ポリエ
チレン、エチレン−酢酸ビニル共重合体、ポリスチレ
ン、PETが好ましく用いられる。
In the case of coextrusion, the mating resin may be a linear low-density polyethylene, low-density polyethylene, medium-density polyethylene, high-density polyethylene, ethylene-vinyl acetate copolymer, ionomer, ethylene-propylene copolymer, ethylene -Acrylate copolymer, polypropylene, propylene-α-olefin (having 4 to 20 carbon atoms)
Α-olefins) copolymers, polyolefins such as polybutenes and polypentenes, or polyolefins in a broad sense, such as homo- or copolymers of these olefins, or graft-modified homo- or copolymers of these olefins with unsaturated carboxylic acids or esters thereof Resin, polyester, polyamide, copolymerized polyamide, polyvinyl chloride, polyvinylidene chloride, acrylic resin, polystyrene, vinyl ester resin,
Examples thereof include polyester elastomer, polyurethane elastomer, chlorinated polyethylene, and chlorinated polypropylene. EVOH can also be co-extruded. Among these, polypropylene, polyamide, polyethylene, ethylene-vinyl acetate copolymer, polystyrene, and PET are preferably used from the viewpoint of ease of coextrusion film formation and practicality of film physical properties (particularly strength).

【0017】更に、本発明で得られる樹脂組成物から一
旦フィルムやシート等の成形物を得、これに他の基材を
押出コートしたり、他の基材のフィルム、シート等を接
着剤を用いてラミネートする場合、前記の熱可塑性樹脂
以外に任意の基材(紙、金属箔、一軸又は二軸延伸プラ
スチックフィルム又はシート、織布、不織布、金属綿
状、木質等)が使用可能である。
Further, a molded product such as a film or a sheet is once obtained from the resin composition obtained by the present invention, and another substrate is extrusion-coated thereon, or the film or sheet of another substrate is coated with an adhesive. In the case of laminating using, any substrate (paper, metal foil, uniaxially or biaxially stretched plastic film or sheet, woven fabric, nonwoven fabric, metal flocculent, woody, etc.) other than the above-mentioned thermoplastic resin can be used. .

【0018】積層体の層構成は、本発明で得られて樹脂
組成物の層をa(a1、a2、・・・)、他の基材、例え
ば熱可塑性樹脂層をb(b1、b2、・・・)とすると
き、フィルム、シート、ボトル状であれば、a/bの二
層構造のみならず、b/a/b、a/b/a、a1/a2
/b、a/b1/b2、b2/b1/a/b1/b2等任意の
組み合わせが可能であり、フィラメント状ではa、bが
バイメタル型、芯(a)−鞘(b)型、芯(b)−鞘
(a)型、或いは偏心芯鞘型等任意の組み合わせが可能
である。
The layer structure of the laminate is such that the layer of the resin composition obtained in the present invention is a (a 1 , a 2 ,...), And another substrate such as a thermoplastic resin layer is b (b 1 , B 2 ,...), In the case of a film, sheet, or bottle, not only a / b two-layer structure but also b / a / b, a / b / a, a 1 / a 2
/ B, a / b 1 / b 2 , b 2 / b 1 / a / b 1 / b 2, and any combination is possible. In the filament form, a and b are bimetallic, and the core (a) -sheath ( Any combination such as b) type, core (b) -sheath (a) type, or eccentric core-sheath type is possible.

【0019】かくして得られた積層体の形状としては任
意のものであってよく、フィルム、シート、テープ、ボ
トル、パイプ、フィラメント、異型断面押出物等が例示
される。又、得られる積層体は必要に応じ、熱処理、冷
却処理、圧延処理、印刷処理、ドライラミネート処理、
溶液又は溶融コート処理、製袋加工、深絞り加工、箱加
工、チューブ加工、スプリット加工等を行うことができ
る。上記の如く得られたフィルム、シート或いは容器等
は食品、医薬品、工業薬品、農薬等各種の包装材料とし
て有用である。
The shape of the laminate thus obtained may be arbitrary, and examples thereof include a film, a sheet, a tape, a bottle, a pipe, a filament, and an extrudate having a modified cross section. Further, the obtained laminate is heat-treated, cooled, rolled, printed, dry-laminated,
Solution or melt coating processing, bag making processing, deep drawing processing, box processing, tube processing, split processing, and the like can be performed. The films, sheets, containers and the like obtained as described above are useful as various packaging materials for foods, pharmaceuticals, industrial chemicals, agricultural chemicals and the like.

【0020】[0020]

【実施例】以下、実施例を挙げて本発明を具体的に説明
する。尚、例中、「部」、「%」とあるのは、特に断り
のない限り重量基準を意味する。 実施例1 EVOH[エチレン含有量32モル%、ケン化度99.
7モル%]20部、高密度ポリエチレン[メルトインデ
ックス0.6g/10分;190℃、2160g荷重]
80部及び相溶化剤(マレイン酸変性ポリエチレン)5
部を二軸押出機にて溶融ブレンドしてペレット状の樹脂
組成物を得た後、射出成形機にて1cm×1cm×5c
mの直方体に成形した。
The present invention will be specifically described below with reference to examples. In the examples, “parts” and “%” mean on a weight basis unless otherwise specified. Example 1 EVOH [ethylene content 32 mol%, saponification degree 99.
7 mol%], 20 parts, high-density polyethylene [Melt index 0.6 g / 10 min; 190 ° C., 2160 g load]
80 parts and compatibilizer (maleic acid-modified polyethylene) 5
Part was melt-blended with a twin-screw extruder to obtain a pellet-shaped resin composition, and then 1 cm x 1 cm x 5c with an injection molding machine
m was formed into a rectangular parallelepiped.

【0021】次いで、周波数2.45GHzのマイクロ
波(20Mrad)を20秒間照射して、本発明の樹脂
組成物を得た。得られた樹脂組成物を−40℃にて、I
zod耐衝撃性試験を行ったが、7.2kg・cm/c
mであった。
Then, a microwave (20 Mrad) having a frequency of 2.45 GHz was irradiated for 20 seconds to obtain a resin composition of the present invention. The obtained resin composition was heated at -40 ° C
Zod impact resistance test was carried out, but 7.2 kg · cm / c
m.

【0022】実施例2 実施例1において、マイクロ波を10Mradとした以
外は、同様に行って樹脂組成物を得て、同様に評価を行
ったが、結果は6.8kg・cm/cmであった。
Example 2 A resin composition was obtained in the same manner as in Example 1 except that the microwave was changed to 10 Mrad, and the same evaluation was performed. The result was 6.8 kg · cm / cm. Was.

【0023】実施例3 実施例1において、マイクロ波を30Mradとした以
外は、同様に行って樹脂組成物を得て、同様に評価を行
ったが、結果は7.5kg・cm/cmであった。
Example 3 A resin composition was obtained in the same manner as in Example 1 except that the microwave was changed to 30 Mrad, and the same evaluation was performed. The result was 7.5 kg · cm / cm. Was.

【0024】実施例4 実施例1において、 EVOH及び高密度ポリエチレン
のブレンド量をそれぞれ50部及び50部とし、更にマ
イクロ波を30Mradとした以外は、同様に行って樹
脂組成物を得て、同様に評価を行ったが、結果は6.2
kg・cm/cmであった。
Example 4 A resin composition was obtained in the same manner as in Example 1 except that the blend amounts of EVOH and high-density polyethylene were changed to 50 parts and 50 parts, respectively, and the microwave was changed to 30 Mrad. Was evaluated, and the result was 6.2.
kg · cm / cm.

【0025】実施例5 実施例1において、 EVOH及び高密度ポリエチレン
のブレンド量をそれぞれ5部及び95部とした以外は、
同様に行って樹脂組成物を得て、同様に評価を行った
が、結果は6.6kg・cm/cmであった。
Example 5 Example 1 was repeated except that the blending amounts of EVOH and high-density polyethylene were changed to 5 parts and 95 parts, respectively.
The same procedure was performed to obtain a resin composition, which was evaluated in the same manner. The result was 6.6 kg · cm / cm.

【0026】実施例6 実施例1において、 EVOHとしてエチレン含有量4
4モル%、ケン化度98モル%のものを用いた以外は、
同様に行って樹脂組成物を得て、同様に評価を行った
が、結果は6.7kg・cm/cmであった。
Example 6 In Example 1, the ethylene content was 4 as EVOH.
4 mol% and a saponification degree of 98 mol%, except that
The same procedure was performed to obtain a resin composition, which was similarly evaluated. The result was 6.7 kg · cm / cm.

【0027】比較例1 実施例1において、マイクロ波の照射を行わなかった以
外は、同様に行って樹脂組成物を得て、同様に評価を行
ったが、結果は3.9kg・cm/cmであった。
Comparative Example 1 A resin composition was obtained in the same manner as in Example 1 except that irradiation with microwaves was not performed, and the same evaluation was performed. The result was 3.9 kg · cm / cm. Met.

【0028】[0028]

【発明の効果】本発明では、EVOHと熱可塑性樹脂と
の組成物をマイクロ波で照射処理をしているため、耐衝
撃性に優れた樹脂組成物を得ることができ、該組成物は
ガソリンタンク、ボトル、チューブ、カップ等の用途に
有用で、特にEVOHとポリオレフィン系樹脂等からな
るスクラップ(リグラインド)層を有する場合には大変
有用である。
According to the present invention, since the composition of EVOH and the thermoplastic resin is irradiated with microwaves, a resin composition having excellent impact resistance can be obtained. It is useful for applications such as tanks, bottles, tubes, cups, etc., and is particularly useful when it has a scrap (regrind) layer made of EVOH and polyolefin resin.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI // C08J 7/00 302 C08J 7/00 302 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI // C08J 7/00 302 C08J 7/00 302

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 エチレン−酢酸ビニル共重合体ケン化物
と熱可塑性樹脂からなり、かつマイクロ波で照射処理さ
れてなることを特徴とする樹脂組成物。
1. A resin composition comprising a saponified ethylene-vinyl acetate copolymer and a thermoplastic resin, wherein the resin composition is irradiated with microwaves.
【請求項2】 エチレン−酢酸ビニル共重合体ケン化物
が、エチレン含量10〜60モル%で、酢酸ビニル成分
のケン化度が90モル%以上であることを特徴とする請
求項1記載の樹脂組成物。
2. The resin according to claim 1, wherein the saponified ethylene-vinyl acetate copolymer has an ethylene content of 10 to 60 mol% and a saponification degree of the vinyl acetate component of 90 mol% or more. Composition.
【請求項3】 熱可塑性樹脂が、ポリオレフィン系樹
脂、ポリアミド系樹脂、ポリエステル系樹脂、ポリスチ
レン系樹脂のいずれかであることを特徴とする請求項1
または2記載の樹脂組成物。
3. The resin according to claim 1, wherein the thermoplastic resin is any one of a polyolefin resin, a polyamide resin, a polyester resin, and a polystyrene resin.
Or the resin composition according to 2.
JP11418098A 1998-04-08 1998-04-08 Resin composition Withdrawn JPH11293068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11418098A JPH11293068A (en) 1998-04-08 1998-04-08 Resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11418098A JPH11293068A (en) 1998-04-08 1998-04-08 Resin composition

Publications (1)

Publication Number Publication Date
JPH11293068A true JPH11293068A (en) 1999-10-26

Family

ID=14631204

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11418098A Withdrawn JPH11293068A (en) 1998-04-08 1998-04-08 Resin composition

Country Status (1)

Country Link
JP (1) JPH11293068A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004002791A (en) * 2002-04-15 2004-01-08 Mitsubishi Chemicals Corp Thermoplastic resin composition and multilayered laminated material
US6770709B2 (en) 2000-06-29 2004-08-03 Kyowa Yuka Co., Ltd. Resin composition
CN112079967A (en) * 2020-09-02 2020-12-15 池州九威新材料有限公司 Irradiation crosslinked nylon material and preparation method thereof
WO2021029355A1 (en) * 2019-08-09 2021-02-18 三菱ケミカル株式会社 Resin composition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6770709B2 (en) 2000-06-29 2004-08-03 Kyowa Yuka Co., Ltd. Resin composition
JP2004002791A (en) * 2002-04-15 2004-01-08 Mitsubishi Chemicals Corp Thermoplastic resin composition and multilayered laminated material
WO2021029355A1 (en) * 2019-08-09 2021-02-18 三菱ケミカル株式会社 Resin composition
CN114127167A (en) * 2019-08-09 2022-03-01 三菱化学株式会社 Resin composition
CN112079967A (en) * 2020-09-02 2020-12-15 池州九威新材料有限公司 Irradiation crosslinked nylon material and preparation method thereof

Similar Documents

Publication Publication Date Title
JPH11106592A (en) Resin composition and its laminate
EP1270179B1 (en) Method for producing biaxially streched film made of ethylene-vinyl alcohol copolymer
JP5046430B2 (en) Resin composition and laminate
US5068077A (en) Process of vacuum-air pressure drawing of a laminate containing an evoh/polyamide copolymer
JP2892487B2 (en) Polyolefin resin composition and use thereof
JP2000044756A (en) Manufacture of composition of saponified ethylene- vinylacetate copolymer
JP3137930B2 (en) Saponified ethylene-vinyl acetate copolymer composition and multilayer structure using the same
JPH11152307A (en) Continuous treatment of ethylene-vinyl acetate copolymer saponification product
JP2000043040A (en) Production of saponified ethylene-vinyl acetate copolymer composition pellet
JP2744283B2 (en) Compositions and multilayer structures
JPH11293068A (en) Resin composition
JP3953606B2 (en) Process for producing stretched film of saponified ethylene-vinyl acetate copolymer
US20230192963A1 (en) Modified ethylene-vinyl alcohol resin and production method therefor
JP3841943B2 (en) Production method of resin composition
JP2828300B2 (en) Ethylene-vinyl acetate copolymer saponified composition having improved properties and use thereof
JP3383000B2 (en) Saponified ethylene-vinyl acetate copolymer and use thereof
JP3133410B2 (en) Easy tear multilayer film
JP3841941B2 (en) Production method of resin composition
JP4634554B2 (en) Resin composition and laminate
JP4634555B2 (en) Resin composition and laminate
JP2000143736A (en) Saponified product of ethylene-vinyl acetate copolymer
JP2000212369A (en) Resin composition and its use
JP3841942B2 (en) Production method of resin composition
JP2001302710A (en) Resin composition and laminate
JPH1158500A (en) Forming method of resin composition

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20050329

Free format text: JAPANESE INTERMEDIATE CODE: A621

A761 Written withdrawal of application

Effective date: 20061129

Free format text: JAPANESE INTERMEDIATE CODE: A761