Title:
MAGNESIUM-HYDROXIDE-MICROCAPSULE FLAME RETARDANT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/068064
Kind Code:
A1
Abstract:
A magnesium-hydroxide-microcapsule flame retardant, comprising magnesium hydroxide as a flame-retardant core, and a surface modification layer, a DOPO layer and a polymeric layer, which sequentially coat the outside of the flame-retardant core. The magnesium-hydroxide-microcapsule flame retardant having a multi-layered structure is constructed in situ by means of a chemical method from magnesium hydroxide and a multi-component flame retardant. Vinylated magnesium hydroxide particles having reactivity are formed under a surface grafting effect of magnesium hydroxide; in addition, intermediate DOPO having a relatively good flame retardant efficiency is selected, and by means of the characteristic of a P-H bond of the intermediate DOPO having extremely high activity to a double bond, the surface of the magnesium hydroxide is coated with a layer of DOPO; and the surface of the magnesium-hydroxide-DOPO capsule is then coated with a thin polymeric layer by means of in situ polymerization. The present invention is used for solving the problems of a magnesium hydroxide flame retardant having a poor flame retardant effect, a high addition amount, and poor compatibility with other materials.
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Inventors:
ZHANG ZHIHUA (CN)
XU JINGSHUI (CN)
LI LEI (CN)
WANG XU (CN)
CUI BAOCHEN (CN)
JIANG DAHONG (CN)
LUO ZIBO (CN)
CHEN ZELIN (CN)
XU JINGSHUI (CN)
LI LEI (CN)
WANG XU (CN)
CUI BAOCHEN (CN)
JIANG DAHONG (CN)
LUO ZIBO (CN)
CHEN ZELIN (CN)
Application Number:
PCT/CN2020/135553
Publication Date:
April 07, 2022
Filing Date:
December 11, 2020
Export Citation:
Assignee:
UNIV GUANGDONG PETROCHEM TECH (CN)
International Classes:
C08K3/22; C09C1/02; C08K3/34; C08K9/04; C09C3/08; C09C3/10
Foreign References:
| CN103788408A | 2014-05-14 | |||
| CN104804474A | 2015-07-29 | |||
| CN101177289A | 2008-05-14 |
Attorney, Agent or Firm:
GUANGZHOU RUNHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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