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JPS62181B2 - - Google Patents
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JPS62181B2 - - Google Patents

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Publication number
JPS62181B2
JPS62181B2 JP56055812A JP5581281A JPS62181B2 JP S62181 B2 JPS62181 B2 JP S62181B2 JP 56055812 A JP56055812 A JP 56055812A JP 5581281 A JP5581281 A JP 5581281A JP S62181 B2 JPS62181 B2 JP S62181B2
Authority
JP
Japan
Prior art keywords
olefin resin
weight
parts
polyα
present
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.)
Expired
Application number
JP56055812A
Other languages
Japanese (ja)
Other versions
JPS57170942A (en
Inventor
Kazuo Shingyochi
Tomoki Inada
Masakatsu Sato
Norio Takahata
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP56055812A priority Critical patent/JPS57170942A/en
Publication of JPS57170942A publication Critical patent/JPS57170942A/en
Publication of JPS62181B2 publication Critical patent/JPS62181B2/ja
Granted legal-status Critical Current

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Description

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

本発明は難燃性ポリα−オレフイン樹脂組成物
に関する。 従来からポリα−オレフイン樹脂をハロゲン系
難燃剤で難燃化する方法が一般に行なわれている
が、燃焼の際にハロゲン化水素等の腐食性の気体
を発生し、火災時に高価な機器を腐食させるだけ
でなく、これらは有毒でもあり、中毒事故を起す
おそれもあつた。 燃焼時に有毒で腐食性のガスを発生しない難燃
化法として、結晶水を有する無機化合物を用いる
方法が近年提案されているが、これ単独では、火
災時等に高温の炎に曝されたりすると、ポリα−
オレフイン樹脂が溶融して、ドリツプ現象を生じ
てしまう。 本発明は、難燃性にすぐれ、燃焼時のドリツプ
を防止することができるポリα−オレフイン樹脂
組成物を提供することを目的とする。 本発明の要旨は、ポリα−オレフイン樹脂100
重量部に対し、水酸化アルミニウムまたは(およ
び)水酸化マグネシウム30ないし250重量部、脱
水素触媒を単独または2種類以上併用して少なく
とも0.05重量部以上を加えて成ることを特徴とす
る難燃性ポリα−オレフイン樹脂組成物にある。 上記のポリα−オレフイン樹脂とは、例えばポ
リエチレン、ポリプロピレン、ポリブデン、エチ
レンと他の共重合可能な物質との共重合体および
これらのブレンドの如きエチレン含有重合体から
成るものであり、その架橋化物も含むものであ
る。 水酸化アルミニウムまたは(および)水酸化マ
グネシウムは、ポリα−オレフイン樹脂の易燃性
の欠点を解消し、組成物の難燃性を良好ならしめ
るために使用されるものである。 これらは熱分解温度が高く、本発明に係る組成
物を加熱により溶融して成長する過程において熱
分解を生じないので、成形時に熱分解して難燃性
付与の効果を失なうおそれがなく、又ポリα−オ
レフイン樹脂との混和性にもすぐれていることか
ら使用されるものである。その使用量はポリα−
オレフイン樹脂100重量部当り30ないし250重量部
である。この場合30重量部よりも少量である場合
には難燃性の付与の効果が低下し、また250重量
部よりも少量である場合には難燃性の付与の効果
が低下し、また250重量部よりも多量である場合
には本発明に係る組成物を用いて成形した成形物
の機械的強度を低下させる傾向が顕著になる。し
かして、本発明において、ポリα−オレフイン樹
脂100重量部に対して水酸化アルミニウムまたは
(および)水酸化マグネシウム30ないし250重量部
が添加されることにより、組成物に難燃性が付与
されるけれども火災時等に高温の炎に曝されたり
するとポリα−オレフイン系樹脂が溶融してドリ
ツプ現象を生じる。 本発明は、難燃性を有するのみならずドリツプ
現象を生じない組成物となすために、更に、脱水
素触媒を少なくとも0.05重量部以上添加して、炭
化を促進させるものである。 脱水素触媒として、具体的には酸化クロム一酸
化亜鉛、酸化アルミニウム−酸化けい素、酸化鉄
−酸化亜鉛、酸化アルミニウム−酸化マンガンな
どが含まれる。この添加する脱水素触媒を0.05重
量部以上としたのは、これ以下の量では、その効
果が認め難いためである。 本発明において、これらの各成分の他、必要に
応じて滑剤、酸化防止剤、紫外線吸収剤、着色
剤、充填剤等が使用されてもよい。 また、ポリα−オレフイン樹脂は、パーオキサ
イド及びエネルギーリツチな放射線により容易に
架橋できるものであり、これにより更に耐薬品性
等を向上できる。 以下に本発明の実施例を比較例と共に示す。
FIELD OF THE INVENTION The present invention relates to flame-retardant poly-α-olefin resin compositions. Conventionally, poly-α-olefin resin has been made flame retardant using halogen-based flame retardants, but when it burns, it generates corrosive gases such as hydrogen halides, which can corrode expensive equipment in the event of a fire. In addition to being harmful, they were also poisonous and could cause poisoning accidents. In recent years, a method using inorganic compounds containing water of crystallization has been proposed as a flame retardant method that does not generate toxic and corrosive gases during combustion. , polyα-
The olefin resin will melt and cause a drip phenomenon. An object of the present invention is to provide a poly-α-olefin resin composition that has excellent flame retardancy and can prevent dripping during combustion. The gist of the present invention is that polyα-olefin resin 100
Flame retardant characterized by adding 30 to 250 parts by weight of aluminum hydroxide or (and) magnesium hydroxide and at least 0.05 part by weight of a dehydrogenation catalyst alone or in combination of two or more types based on parts by weight. It is a poly-α-olefin resin composition. The above poly-α-olefin resin is composed of ethylene-containing polymers such as polyethylene, polypropylene, polybutene, copolymers of ethylene and other copolymerizable substances, and blends thereof, and crosslinked products thereof. It also includes. Aluminum hydroxide and/or magnesium hydroxide are used to overcome the disadvantage of flammability of polyα-olefin resins and improve the flame retardancy of the composition. These have a high thermal decomposition temperature and do not undergo thermal decomposition during the process of melting and growing the composition according to the present invention by heating, so there is no risk of thermal decomposition during molding and loss of the flame retardant effect. It is also used because it has excellent miscibility with polyα-olefin resins. The amount used is polyα-
The amount is 30 to 250 parts by weight per 100 parts by weight of olefin resin. In this case, if the amount is less than 30 parts by weight, the effect of imparting flame retardancy will decrease, if the amount is less than 250 parts by weight, the effect of imparting flame retardance will decrease, and if the amount is less than 250 parts by weight, If the amount is more than 100%, there is a marked tendency to reduce the mechanical strength of molded products formed using the composition according to the present invention. Accordingly, in the present invention, flame retardancy is imparted to the composition by adding 30 to 250 parts by weight of aluminum hydroxide or (and) magnesium hydroxide to 100 parts by weight of the polyα-olefin resin. However, when exposed to high-temperature flames during a fire, the poly-α-olefin resin melts and a drip phenomenon occurs. In the present invention, in order to obtain a composition that not only has flame retardancy but also does not cause the drip phenomenon, a dehydrogenation catalyst is further added in an amount of at least 0.05 parts by weight to promote carbonization. Specific examples of the dehydrogenation catalyst include chromium oxide, zinc monoxide, aluminum oxide-silicon oxide, iron oxide-zinc oxide, aluminum oxide-manganese oxide, and the like. The reason why the amount of the dehydrogenation catalyst to be added is 0.05 part by weight or more is because the effect is difficult to be observed if the amount is less than 0.05 part by weight. In the present invention, in addition to these components, lubricants, antioxidants, ultraviolet absorbers, colorants, fillers, etc. may be used as necessary. Moreover, poly-α-olefin resin can be easily crosslinked with peroxide and energy-rich radiation, thereby further improving chemical resistance and the like. Examples of the present invention are shown below along with comparative examples.

【表】 次に上記実施例と比較例の諸特性について示
す。
[Table] Next, various characteristics of the above examples and comparative examples are shown.

【表】【table】

【表】 以上説明したところからも明らかなように、本
発明はポリα−オレフイン樹脂組成物の良好な特
性を損うことなく、燃焼時のドリツプを防止し、
しかも、燃焼時に腐食性のガスを発生しない難燃
性ポリα−オレフイン樹脂組成物を提供するもの
であり、その工業的価値は極めて大なるものがあ
る。
[Table] As is clear from the above explanation, the present invention prevents dripping during combustion without impairing the good properties of the polyα-olefin resin composition.
Moreover, it provides a flame-retardant poly-α-olefin resin composition that does not generate corrosive gas when burned, and has extremely great industrial value.

Claims (1)

【特許請求の範囲】[Claims] 1 ポリα−オレフイン樹脂100重量部に対し、
水酸化アルミニウムまたは(および)水酸化マグ
ネシウム30ないし250重量部、脱水素触媒を単独
または2種類以上併用して少なくとも0.05重量部
以上加えて成ることを特徴とする難燃性ポリα−
オレフイン樹脂組成物。
1 For 100 parts by weight of polyα-olefin resin,
Flame-retardant polyα-
Olefin resin composition.
JP56055812A 1981-04-14 1981-04-14 Flame-retardant poly alpha-olefin resin composition Granted JPS57170942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56055812A JPS57170942A (en) 1981-04-14 1981-04-14 Flame-retardant poly alpha-olefin resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56055812A JPS57170942A (en) 1981-04-14 1981-04-14 Flame-retardant poly alpha-olefin resin composition

Publications (2)

Publication Number Publication Date
JPS57170942A JPS57170942A (en) 1982-10-21
JPS62181B2 true JPS62181B2 (en) 1987-01-06

Family

ID=13009335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56055812A Granted JPS57170942A (en) 1981-04-14 1981-04-14 Flame-retardant poly alpha-olefin resin composition

Country Status (1)

Country Link
JP (1) JPS57170942A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0788443B2 (en) * 1986-11-19 1995-09-27 三菱電線工業株式会社 Flame-retardant resin composition

Also Published As

Publication number Publication date
JPS57170942A (en) 1982-10-21

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