Title:
ORGANOPHOSPHORUS COMPOUND FLAME RETARDANT, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/139073
Kind Code:
A1
Abstract:
Provided are an organophosphorus compound flame retardant, and a preparation method therefor and an application thereof. The organophosphorus compound flame retardant is obtained by dropwise adding at least one of a soluble salt of dialkyl hypophosphorous acid or a soluble salt of monoalkyl hypophosphorous acid and at least one of a soluble salt of alkyl phosphorous acid or a soluble salt of phosphorous acid into a non-halogen soluble salt solution of 2-4 valent metal and then performing a reaction, or dropwise adding at least one of dialkyl hypophosphorous acid or monoalkyl hypophosphorous acid and at least one of alkyl phosphorous acid or phosphorous acid into at least one of active metal oxides or metal hydroxides of 2-4 valent metals and then performing a reaction. The decomposition temperature of the obtained organophosphorus compound flame retardant is higher than or equal to 390°C, the temperature resistance and the application range of alkyl hypophosphite are improved; the organophosphorus compound flame retardant has good flame retardance and can be widely applied to the technical field of flame retardants, so that the flame retardance of polyester resin, polyamide resin, polyurethane, polyolefin materials or rubber is improved.
Inventors:
MENG FANXU (CN)
TIAN RENCHUN (CN)
DU HUANYANG (CN)
XU HAOLIANG (CN)
ZHENG JUN (CN)
TIAN RENCHUN (CN)
DU HUANYANG (CN)
XU HAOLIANG (CN)
ZHENG JUN (CN)
Application Number:
PCT/CN2020/092876
Publication Date:
July 15, 2021
Filing Date:
May 28, 2020
Export Citation:
Assignee:
WEIHAI HELEN NEW MAT TECH CO LTD (CN)
International Classes:
C08K5/5313; C08K7/14; C08L23/06; C08L67/00; C08L67/02; C08L75/04; C08L77/02; C08L77/06
Foreign References:
| CN105646938A | 2016-06-08 | |||
| CN111116988A | 2020-05-08 | |||
| CN108997611A | 2018-12-14 | |||
| CN1280582A | 2001-01-17 | |||
| CN103951700A | 2014-07-30 | |||
| CN107936055A | 2018-04-20 |
Attorney, Agent or Firm:
WUXI HUICHENGYONGXIN PATENT FIRM( GENERAL PARTNERSHIP) (CN)
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