難燃性樹脂組成物の製造方法 - Kyowa Chemical Industry Co., Ltd.

Title:

難燃性樹脂組成物の製造方法

Document Type and Number:

Japanese Patent JP4201280

Kind Code:

B2

Abstract:

Provided are magnesium hydroxide particles having a hexagonal crystal form and having an aspect ratio (H) which satisfies the following expression (I),

(wherein H is an aspect ratio, A is an average secondary particle diameter ( mu m) of all of the particles measured by a laser diffraction scattering method and B is a specific surface area (m<2>/g) of all of the particles measured by a BET method), a flame-retardant comprising the particles, a flame-retardant resin composition comprising 100 parts by weight of a synthetic resin and a 5 to 300 parts by weight of the magnesium hydroxide particles, and a molded article therefrom.  The magnesium hydroxide particles are hexagonal single crystals, the hexagonal form thereof are not necessarily required to be regular hexagonal, and the size thereof are not necessarily constant. However, the aspect ratio thereof has a specific value in relation to the specific surface area and the average particle diameter, and the magnesium hydroxide particles have excellent properties as a flame retardant for synthetic resins.

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Inventors:

Shunji Oishi
Taro Ando
Makoto Yoshii
Hiraishi Wataru

Application Number:

JP2005367804A

Publication Date:

December 24, 2008

Filing Date:

December 21, 2005

Export Citation:

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Assignee:

Kyowa Chemical Industry Co., Ltd.

International Classes:

C01F5/22; C08K3/22; C01F5/14; C01F5/20; C08L101/00; C09K21/02

Domestic Patent References:

JP2164713A
JP63277511A
JP1131022A
JP4362012A
JP6504027A
JP9227784A

Other References:

中西圭太外2名,Mg塩水溶液中でのマグネシウムクリンカーの水和によって得られるMg(OH)2の生成機構(第1報),日本セラミックス協会学術論文誌,1989年,vol.97,no.7,p.683-689
経営開発センター出版部企画編集,無機物質とポリマーとの相互作用 -総合技術資料集-,1986年 1月31日,p.395-409

Attorney, Agent or Firm:

Masataka Oshima

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