JPS60206866A - Antistatic resin composition - Google Patents

Antistatic resin composition

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Publication number
JPS60206866A
JPS60206866A JP6391384A JP6391384A JPS60206866A JP S60206866 A JPS60206866 A JP S60206866A JP 6391384 A JP6391384 A JP 6391384A JP 6391384 A JP6391384 A JP 6391384A JP S60206866 A JPS60206866 A JP S60206866A
Authority
JP
Japan
Prior art keywords
resin
parts
resin composition
antistatic
surface resistance
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
Application number
JP6391384A
Other languages
Japanese (ja)
Inventor
Motoi Nagano
長野 基
Eiji Yoshinari
吉成 英二
Sumio Ando
安藤 純雄
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP6391384A priority Critical patent/JPS60206866A/en
Publication of JPS60206866A publication Critical patent/JPS60206866A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To provide the titled compsn. which has satisfactory antistatic properties and gives transparent resin products, by incorporating a specified inorg. salt in a resin. CONSTITUTION:0.01-10pts.wt. at least one inorg. salt selected from among alkaline earth metal chlorides (e.g. CaCl2), alkali metal phosphates (e.g. Na3PO4) and alkali metal nitrates (e.g. KNO3) is blended with 100pts.wt. thermoplastic resin (e.g. PE) or thermosetting resin (e.g. melamine resin) to obtain an antistatic resin compsn. having a surface resistance of 10<12>OMEGAcm or below.

Description

【発明の詳細な説明】 (技術分野) 本発明は帯電防止性樹脂組成物に関する。[Detailed description of the invention] (Technical field) The present invention relates to an antistatic resin composition.

(従来技術) 本来、樹脂は、表面抵抗及び体積固有抵抗が高く、絶縁
性にすぐれる特性を有するが、反面、この結果としで、
樹脂に静電気が帯電しやすい。このような帯電現象は、
樹脂製品の表面へのほこりの付着を促進して、樹脂製品
の外観や品質を損なうのみならず、爆発を誘引すること
もあるので、従来より、樹脂の帯電を防止する方法が種
々提案されている。
(Prior art) Resins originally have high surface resistance and volume resistivity, and have excellent insulating properties, but on the other hand, as a result of this,
Resin is easily charged with static electricity. This charging phenomenon is
Various methods have been proposed to prevent static electricity from forming on resin, as this promotes the adhesion of dust to the surface of resin products, which not only impairs the appearance and quality of the product, but also may lead to an explosion. There is.

例えば、樹脂製品表面にイオン伝導性有機物を塗布する
方法が知られているが、この方法によれば、樹脂表面の
摩擦、洗浄等によって、帯電防止効果が速やかに消失し
、又は低下する。また、導電性の金属粉やカーボンブラ
ック等を予め樹脂に練り込む方法も知られているが、樹
脂中においてこのような導電性粒子を相互に接触させて
、樹脂に導電性を与えるには、多量の導電性粒子を添加
することが必要となり、樹脂が本来有する特性を劣化さ
せると共に、製品においてピンホール等の種々の欠陥を
招来する。更に、上記のような導電性粒子を用いる方法
は、樹脂製品を不透明にするので、透明性が要求される
樹脂製品には適用することができない。
For example, a method of applying an ion-conductive organic substance to the surface of a resin product is known, but according to this method, the antistatic effect quickly disappears or decreases due to friction, washing, etc. of the resin surface. It is also known to knead conductive metal powder, carbon black, etc. into resin in advance. It is necessary to add a large amount of conductive particles, which deteriorates the inherent properties of the resin and causes various defects such as pinholes in the product. Furthermore, the method using conductive particles as described above makes the resin product opaque, and therefore cannot be applied to resin products that require transparency.

このために、例えば、特公昭45−580号公報には、
特定の構造を有する含窒素両性界面活性剤と、帯電防止
能をもたない有機カルボン酸金属塩又はアルカリ金属以
外の金属塩とを樹脂に少量添加してなる帯電防止性樹脂
組成物が提案されているが、界面活性剤を含有するため
に、製造費用が高価とならざるを得ない。
For this purpose, for example, in Japanese Patent Publication No. 45-580,
An antistatic resin composition has been proposed in which a small amount of a nitrogen-containing amphoteric surfactant having a specific structure and a metal salt of an organic carboxylic acid having no antistatic ability or a metal salt other than an alkali metal is added to a resin. However, since it contains a surfactant, the manufacturing cost is inevitably high.

しかしながら、本発明者らは、無機塩として特定のもの
を帯電防止剤として樹脂に配合するとき、これらは界面
活性剤の併用なしに、樹脂に帯電防止性を付与し得るこ
とを見出して、本発明に至ったものである。
However, the present inventors have discovered that when specific inorganic salts are blended into resins as antistatic agents, these can impart antistatic properties to the resins without the use of surfactants. This led to the invention.

(発明の目的) 従って、本発明は、従来の帯電防止性樹脂組成物におけ
る上記した問題を解決し、少量の帯電防止剤を含有する
ことによって、十分な帯電防止剤を有すると共に、透明
な樹脂製品を与える帯電防止性樹脂組成物を提供するこ
とを目的とするものである。
(Object of the Invention) Therefore, the present invention solves the above-mentioned problems in conventional antistatic resin compositions, and by containing a small amount of antistatic agent, it has a sufficient amount of antistatic agent and a transparent resin composition. The object of the present invention is to provide an antistatic resin composition that provides a product.

(発明の要旨) 本発明による帯電防止性樹脂組成物は、樹脂100重量
部に対して、アルカリ土類金属の塩化物、アルカリ金属
のリン酸塩及びアルカリ金属の硝酸塩から選ばれる少な
くとも1種の無機塩0.01〜10重量部を含有させた
ことを特徴とする。
(Summary of the Invention) The antistatic resin composition according to the present invention contains at least one compound selected from alkaline earth metal chlorides, alkali metal phosphates, and alkali metal nitrates based on 100 parts by weight of the resin. It is characterized by containing 0.01 to 10 parts by weight of an inorganic salt.

(発明の構成) 本発明においては、帯電防止剤として、アルカリ土類金
属の塩化物、アルカリ金属のリン酸塩及びアルカリ金属
の硝酸塩から選ばれる少なくとも1種の無機塩を用いる
。これら無機塩の具体例としては、アルカリ土類金属の
塩化物として、塩化カルシウム、塩化マグネシウム、塩
化バリウム等を、アルカリ金属のリン酸塩としてリン酸
ナトリウム、リン酸カリウム等を、また、アルカリ金属
の硝酸塩として硝酸カリウム、硝酸ナトリウム等を例示
することができる。
(Structure of the Invention) In the present invention, at least one inorganic salt selected from alkaline earth metal chlorides, alkali metal phosphates, and alkali metal nitrates is used as the antistatic agent. Specific examples of these inorganic salts include chlorides of alkaline earth metals such as calcium chloride, magnesium chloride, barium chloride, etc., phosphates of alkali metals such as sodium phosphate, potassium phosphate, etc. Examples of the nitrate include potassium nitrate and sodium nitrate.

本発明の帯電防止性樹脂組成物は、このような無機塩を
少なくとも1種含有し、その含有量は樹脂100重量部
に対して0.01〜10重量部、好ましくは0.05〜
2重量部である。無機塩の含有量が、樹脂100重量部
に対して0.01重量部よりも少ないときは、得られる
樹脂組成物の帯電防止性が十分ではなく、一方、10重
量部よりも多いときは、樹脂の本来の性質を損なうおそ
れがあるのみならず、樹脂中に均一に分散させることが
困難であって、得られる樹脂組成物が不均一となるので
好ましくない。上記のような無機塩が樹脂製品の表面抵
抗を減少させ、帯電防止効果を与える理由については明
らかではないが、少量の添加により樹脂組成物に帯電防
止性を有せしめると共に、この樹脂組成物を透明な樹脂
製品に成形し得ることが本発明の重要な特徴である。
The antistatic resin composition of the present invention contains at least one such inorganic salt, and the content thereof is 0.01 to 10 parts by weight, preferably 0.05 to 10 parts by weight, based on 100 parts by weight of the resin.
2 parts by weight. When the content of the inorganic salt is less than 0.01 parts by weight based on 100 parts by weight of the resin, the resulting resin composition does not have sufficient antistatic properties, while when it is more than 10 parts by weight, This is not preferable because it not only may impair the original properties of the resin, but also makes it difficult to uniformly disperse it in the resin, resulting in a non-uniform resin composition. It is not clear why the above-mentioned inorganic salts reduce the surface resistance of resin products and provide antistatic effects, but adding a small amount of inorganic salts can impart antistatic properties to resin compositions and improve the quality of this resin composition. An important feature of the present invention is that it can be molded into transparent resin products.

本発明の樹脂組成物を調製するに際して、帯電防止剤と
しての上記のような無機塩をそのままの形態で、即ち、
粉末や粒子の形態で樹脂に添加し、混練してもよいが、
例えば、無機塩をアルコール、水又はその混合物等の適
宜の溶剤に溶解し、この溶液を樹脂に添加し、混練する
ことは、無機塩を樹脂中に均一に分散させることができ
るので、好ましい方法である。また、無機塩を、樹脂に
応じて添加される各種の界面活性剤、滑剤等に予め溶解
させておき、この溶液を樹脂に添加し、混練するのも好
ましい方法である。
When preparing the resin composition of the present invention, the above-mentioned inorganic salt as an antistatic agent is used in its original form, that is,
It may be added to the resin in the form of powder or particles and kneaded, but
For example, dissolving the inorganic salt in an appropriate solvent such as alcohol, water, or a mixture thereof, adding this solution to the resin, and kneading is a preferred method because the inorganic salt can be uniformly dispersed in the resin. It is. Another preferred method is to dissolve the inorganic salt in advance in various surfactants, lubricants, etc. that are added depending on the resin, and then add this solution to the resin and knead it.

本発明においては、得られる樹脂組成物の好ましい性質
を損なわない範囲で、従来より帯電防止性を有すること
が知られている界面活性剤を帯電防止剤としての前記無
機塩と共に樹脂に含有させることができる。
In the present invention, a surfactant that is conventionally known to have antistatic properties may be included in the resin together with the above-mentioned inorganic salt as an antistatic agent, within a range that does not impair the desirable properties of the resulting resin composition. I can do it.

本発明における樹脂の種類は何ら限定されないが、例え
ば、ポリエチレン、ポリプロピレン、エチレン−プロピ
レン共重合体、ポリ塩化ビニル、エチレン−塩化ビニル
共重合体、ポリスチレン、スチレン−ブタジェン共重合
体、アクリロニトリル−スチレン−ブタジェン共重合体
、スチレン−メタクリレートメチル共重合体、ポリアル
キレンフタレート、ポリアミド、ポリウレタン等の熱可
塑性樹脂、尿素樹脂、メラミン樹脂、ポリエステル樹脂
等の熱硬化性樹脂が好適に用いられる。尚、本発明にお
いては、樹脂組成物がその樹脂に応じて可塑剤、滑剤、
安定剤、着色剤、充填剤等を含有していても、何ら差し
支えない。
The type of resin in the present invention is not limited at all, but examples include polyethylene, polypropylene, ethylene-propylene copolymer, polyvinyl chloride, ethylene-vinyl chloride copolymer, polystyrene, styrene-butadiene copolymer, acrylonitrile-styrene copolymer, Thermoplastic resins such as butadiene copolymer, styrene-methyl methacrylate copolymer, polyalkylene phthalate, polyamide, polyurethane, and thermosetting resins such as urea resin, melamine resin, and polyester resin are preferably used. In addition, in the present invention, the resin composition may contain a plasticizer, a lubricant, a
There is no problem even if it contains stabilizers, colorants, fillers, etc.

(発明の効果) 樹脂は、通常、1QI4ΩcII+又はそれ以上の表面
抵抗を有するために大きい帯電性を有するが、本発明の
樹脂組成物は、以上のように、少量の無機塩を含有する
のみで、その表面抵抗が10”ΩG又はそれ以下に著し
く減じられた樹脂製品を与え、また、樹脂製品はその透
明性を損なわれない。
(Effects of the Invention) Resins usually have a high chargeability because they have a surface resistance of 1QI4ΩcII+ or more, but as described above, the resin composition of the present invention contains only a small amount of inorganic salt. , yields a resin article whose surface resistance is significantly reduced to 10" ΩG or less, and the resin article does not lose its transparency.

(実施例) 以下に実施例を挙げて、本発明の樹脂組成物を説明する
。尚、以下の実施例においては、部は重量部を意味する
ものとし、また、樹脂組成物は、シートに成形し、温度
30℃、湿度60%の恒温室にてその表面抵抗を測定す
ることによって、帯電防止効果を評価した。
(Example) The resin composition of the present invention will be described below with reference to Examples. In addition, in the following examples, parts mean parts by weight, and the resin composition is molded into a sheet and its surface resistance is measured in a constant temperature room at a temperature of 30 ° C. and a humidity of 60%. The antistatic effect was evaluated.

実施例1 スチレン−ブタジェン共重合体100部に帯電防止剤と
して塩化マグネシウム6水塩2部を添加し、180℃で
5分間ロール練りした後、温度170℃、圧力100k
g/cjで5分間プレス成形して、厚み1.2鰭のシー
トを得た。このシートの表面抵抗を表に示す。
Example 1 2 parts of magnesium chloride hexahydrate was added as an antistatic agent to 100 parts of styrene-butadiene copolymer, and after roll kneading at 180°C for 5 minutes, the temperature was 170°C and the pressure was 100k.
Press molding was performed for 5 minutes at g/cj to obtain a sheet with a thickness of 1.2 fins. The surface resistance of this sheet is shown in the table.

比較例1 実施例1において、塩化マグネシウム6水塩に代えて、
塩化ナトリウム2部を用いた以外は、実施例1と同様に
して厚み1.2flのシートを得た。
Comparative Example 1 In Example 1, instead of magnesium chloride hexahydrate,
A sheet with a thickness of 1.2 fl was obtained in the same manner as in Example 1 except that 2 parts of sodium chloride was used.

このシートの表面抵抗を表に示す。The surface resistance of this sheet is shown in the table.

実施例2 ポリエチレン100部に帯電防止剤としてリン酸カリウ
ム1部と硝酸カリウム0.5部とを添加し、210℃で
押出成形して、厚み1.0鰭のシートとした。このシー
トの表面抵抗を表に示す。
Example 2 1 part of potassium phosphate and 0.5 part of potassium nitrate as antistatic agents were added to 100 parts of polyethylene, and the mixture was extruded at 210°C to form a sheet having a thickness of 1.0 fin. The surface resistance of this sheet is shown in the table.

実施例3 ポリ塩化ビニル100部にエポキシ樹脂系滑剤2部、B
a−Zn系安定剤2部及び帯電防止剤として塩化バリウ
ム1部を添加し、190℃で押出成形し、厚み1.0 
+nのシートを得た。このシートの表面抵抗を表に示す
Example 3 100 parts of polyvinyl chloride, 2 parts of epoxy resin lubricant, B
Add 2 parts of a-Zn stabilizer and 1 part of barium chloride as an antistatic agent, and extrude at 190°C to a thickness of 1.0
+n sheets were obtained. The surface resistance of this sheet is shown in the table.

実施例4 ポリ塩化ビニル100部にジオクチルフタレート50部
、Ba−Zn系安定剤2部及び帯電防止材としての塩化
マグネシウム6水塩0.3部及びリン酸ナトリウム0.
3部を添加し、160℃で5分計ロール練りした後、温
度160℃、圧力150g / c+aで5分間プレス
成形して、厚み1.2 tmのシートを得た。このシー
トの表面抵抗を表に示す。
Example 4 100 parts of polyvinyl chloride, 50 parts of dioctyl phthalate, 2 parts of Ba-Zn stabilizer, 0.3 part of magnesium chloride hexahydrate as an antistatic agent, and 0.3 part of sodium phosphate.
After adding 3 parts, the mixture was roll-kneaded at 160°C for 5 minutes, and then press-molded at 160°C and a pressure of 150g/c+a for 5 minutes to obtain a sheet with a thickness of 1.2 tm. The surface resistance of this sheet is shown in the table.

比較例2 実施例4において、塩化マグネシウム6水塩及びリン酸
ナトリウムを含有しない樹脂組成物を調製し、実施例4
と同様にして厚み1.2顛のシートを得た。このシート
の表面抵抗を表に示す。
Comparative Example 2 In Example 4, a resin composition containing no magnesium chloride hexahydrate and sodium phosphate was prepared, and Example 4
A sheet with a thickness of 1.2 mm was obtained in the same manner as above. The surface resistance of this sheet is shown in the table.

比較例3 実施例4において、塩化マグネシウム6水塩及びリン酸
ナトリウムに代えて、硫酸ナトリウム1部を用いた以外
は、実施例4と同様にして樹脂組成物を調製し、厚み1
.2鶴のシートを得た。このシートの表面抵抗を表に示
す。
Comparative Example 3 A resin composition was prepared in the same manner as in Example 4, except that 1 part of sodium sulfate was used in place of magnesium chloride hexahydrate and sodium phosphate.
.. I got two crane sheets. The surface resistance of this sheet is shown in the table.

実施例5 アクリロニトリル−ブタジェン−スチレン共重合体10
0部に50%硝酸ナトリウム水溶液2部を添加し、17
0℃で5分間ロール練りした後、温度170℃、圧力5
0kg/cIJで5分間プレス成形して、厚み1.2m
のシートを得た。このシートの表面抵抗を表に示す。
Example 5 Acrylonitrile-butadiene-styrene copolymer 10
Add 2 parts of 50% sodium nitrate aqueous solution to 0 parts and make 17
After roll kneading at 0℃ for 5 minutes, the temperature was 170℃ and the pressure was 5 minutes.
Press molded at 0kg/cIJ for 5 minutes to a thickness of 1.2m.
I got a sheet of The surface resistance of this sheet is shown in the table.

以上の結果から、比較例の樹脂組成物から得られたシー
トの表面抵抗がいずれも10I3ΩcI11以上である
のに対して、本発明の樹脂組成物によれば、いずれもシ
ートの表面抵抗が10′2Ωcm以下、好ましい場合は
10電1ΩQ以下であり、このような著しい表面抵抗の
減少によって、すぐれた帯電防止性を有する。また、本
発明の樹脂組成物によれば、樹脂組成物の透明性が損な
われない。
From the above results, the surface resistances of the sheets obtained from the resin compositions of the comparative examples were all 10I3ΩcI11 or more, whereas the surface resistances of the sheets obtained from the resin compositions of the present invention were all 10' It is 2 Ωcm or less, preferably 10 Ω or less, and 1 ΩQ or less, and due to such a significant reduction in surface resistance, it has excellent antistatic properties. Moreover, according to the resin composition of the present invention, the transparency of the resin composition is not impaired.

Claims (1)

【特許請求の範囲】[Claims] (1) 樹脂100重量部に対して、アルカリ土類金属
の塩化物、アルカリ金属のリン酸塩及びアルカリ金属の
硝酸塩から選ばれるかなくとも1種の無機塩0.01〜
10重量部を含有させたことを特徴とする帯電防止性樹
脂組成物。
(1) 0.01 to 100 parts by weight of at least one inorganic salt selected from alkaline earth metal chlorides, alkali metal phosphates, and alkali metal nitrates, per 100 parts by weight of the resin.
An antistatic resin composition characterized by containing 10 parts by weight.
JP6391384A 1984-03-30 1984-03-30 Antistatic resin composition Pending JPS60206866A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6391384A JPS60206866A (en) 1984-03-30 1984-03-30 Antistatic resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6391384A JPS60206866A (en) 1984-03-30 1984-03-30 Antistatic resin composition

Publications (1)

Publication Number Publication Date
JPS60206866A true JPS60206866A (en) 1985-10-18

Family

ID=13243047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6391384A Pending JPS60206866A (en) 1984-03-30 1984-03-30 Antistatic resin composition

Country Status (1)

Country Link
JP (1) JPS60206866A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238361A (en) * 1984-05-14 1985-11-27 Daicel Chem Ind Ltd Transparent nylon composition
JPS61233057A (en) * 1985-04-08 1986-10-17 Daicel Chem Ind Ltd Polyamide resin composition
JPS6462343A (en) * 1987-09-01 1989-03-08 Japan Synthetic Rubber Co Ltd Thermoplastic resin composition
JPH01236253A (en) * 1988-03-17 1989-09-21 Yazaki Corp Vinyl chloride resin composition
JPH02120370A (en) * 1988-10-28 1990-05-08 Dai Ichi Kogyo Seiyaku Co Ltd Antistatic coating composition

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111861A (en) * 1974-07-22 1976-01-30 Hitachi Shipbuilding Eng Co Senikyokajushikanno enshinseikeihoho
JPS5933338A (en) * 1982-08-20 1984-02-23 Kohjin Co Ltd Antistatic polyolefin composition
JPS5991141A (en) * 1982-11-17 1984-05-25 Kohjin Co Ltd Antistatic polyolefin composition
JPS59182828A (en) * 1983-04-01 1984-10-17 Kohjin Co Ltd Polyolefin composition having good antistatic property
JPS6044536A (en) * 1983-08-22 1985-03-09 Kohjin Co Ltd Antistatic thermoplastic resin composition

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111861A (en) * 1974-07-22 1976-01-30 Hitachi Shipbuilding Eng Co Senikyokajushikanno enshinseikeihoho
JPS5933338A (en) * 1982-08-20 1984-02-23 Kohjin Co Ltd Antistatic polyolefin composition
JPS5991141A (en) * 1982-11-17 1984-05-25 Kohjin Co Ltd Antistatic polyolefin composition
JPS59182828A (en) * 1983-04-01 1984-10-17 Kohjin Co Ltd Polyolefin composition having good antistatic property
JPS6044536A (en) * 1983-08-22 1985-03-09 Kohjin Co Ltd Antistatic thermoplastic resin composition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238361A (en) * 1984-05-14 1985-11-27 Daicel Chem Ind Ltd Transparent nylon composition
JPS61233057A (en) * 1985-04-08 1986-10-17 Daicel Chem Ind Ltd Polyamide resin composition
JPS6462343A (en) * 1987-09-01 1989-03-08 Japan Synthetic Rubber Co Ltd Thermoplastic resin composition
JPH01236253A (en) * 1988-03-17 1989-09-21 Yazaki Corp Vinyl chloride resin composition
JPH02120370A (en) * 1988-10-28 1990-05-08 Dai Ichi Kogyo Seiyaku Co Ltd Antistatic coating composition

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