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Preparation method of flame-retardant polyether polyol for polyurethane foam

A polyurethane foam and flame-retardant polyether technology, which is applied in the field of preparation of flame-retardant polyether polyols for polyurethane foam, can solve problems such as the escape of external flame retardants, the quality of polyurethane materials, and poor flame-retardant effects, and achieve The flame retardant effect is obvious, the flame retardant performance is stable, and the foam quality is good

Inactive Publication Date: 2016-11-23
JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of polyurethane materials prepared by adding flame retardants is affected, and the added flame retardants will escape with the passage of time, and the flame retardant effect is getting worse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The invention discloses a method for preparing flame-retardant polyether polyol for polyurethane foam, which uses toluene diamine and tetrabromobisphenol A as initiators; dimethylamine as a catalyst; and propylene oxide ring-opening polymerization reaction. Including the following steps:

[0014] ① Raw material parts by weight: 30 parts of toluenediamine (Covestro); 28 parts of tetrabromobisphenol A (Shanghai Ruishuo Chemical Co., Ltd.); 2.0 parts of dimethylamine (Nanjing Gutian Chemical Co., Ltd.); The amine is a 40% aqueous solution of dimethylamine in mass fraction. Propylene oxide (Shandong Binhua Group Co., Ltd.) 40 parts;

[0015] ②Put toluenediamine and tetrabromobisphenol A into the reactor, then dimethylamine, and then feed propylene oxide at 135°C. After the addition of propylene oxide, stir at 145°C for 1 hour, the system is fully reacted, then vacuumized, and filtered to obtain the flame-retardant polyether polyol for polyurethane foam.

Embodiment 2

[0017] Another preparation method of flame-retardant polyether polyol for polyurethane foam is prepared by using toluene diamine and tetrabromobisphenol A as initiators; dimethylamine as a catalyst; and propylene oxide ring-opening polymerization reaction. Including the following steps:

[0018] ① The parts by weight of raw materials are: 15 parts of ethylenediamine (Nanjing Gutian Chemical Co., Ltd.); 23 parts of tetrabromobisphenol A (Shanghai Ruishuo Chemical Co., Ltd.); 2 parts of dimethylamine (Nanjing Gutian Chemical Co., Ltd.); Methylamine is a 40% aqueous solution of dimethylamine in mass fraction. Propylene oxide (Shandong Binhua Group Co., Ltd.) 60 parts;

[0019] ②Put ethylenediamine, tris(3-hydroxypropyl)phosphine and tetrabromobisphenol A into the reactor, then dimethylamine, then feed propylene oxide at a temperature of 130°C, and add propylene oxide After completion, stir at 130° C. for 3 hours to allow the system to fully react, then vacuumize and filter to o...

Embodiment 3

[0021] Another preparation method of flame-retardant polyether polyol for polyurethane foam is prepared by using toluene diamine and tetrabromobisphenol A as initiators; dimethylamine as a catalyst; and propylene oxide ring-opening polymerization reaction. Including the following steps:

[0022] ① Raw material parts by weight: ethylenediamine (Nanjing Gutian Chemical Co., Ltd.) 30 parts; Tetrabromobisphenol A (Shanghai Ruishuo Chemical Co., Ltd.) 28 parts; Dimethylamine (Nanjing Gutian Chemical Co., Ltd.) 0.5 parts; Oxypropane (Shandong Binhua Group Co., Ltd.) 41.5 parts; dimethylamine is 40% dimethylamine aqueous solution.

[0023] ②Put ethylenediamine, tris(3-hydroxypropyl)phosphine and tetrabromobisphenol A into the reactor, then put in dimethylamine, then pass through propylene oxide at a temperature of 140°C, and add propylene oxide After completion, stir at 145° C. for 3 hours to allow the system to fully react, then vacuumize and filter to obtain a flame-retardant poly...

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PUM

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Abstract

The invention discloses a preparation method of flame-retardant polyether polyol for polyurethane foam. The method adopts toluene diamine and tetrabromobisphenol A as initiator; dimethylamine as catalyst; and propylene oxide ring-opening polymerization Reaction preparation. The polyurethane foam plastic prepared by using the flame-retardant polyether has good flame-retardant effect, and compared with the polyurethane foam plastic prepared by adding a flame retardant, the flame-retardant performance is stable and the foam quality is better.

Description

technical field [0001] The invention belongs to a preparation method of an organic polymer compound, in particular to a preparation method of a flame-retardant polyether polyol for polyurethane foam. Background technique [0002] Ordinary polyurethane foam is a flammable material. In order to meet the requirements of flame retardancy, flame retardants are usually added when preparing polyurethane foam. However, the quality of polyurethane materials prepared by adding flame retardants is affected, and the added flame retardants will escape with the passage of time, and the flame retardant effect is getting worse. Contents of the invention [0003] The purpose of the present invention is to provide a preparation method of flame-retardant polyether polyol for polyurethane foam. The polyurethane foam prepared by using the flame-retardant polyether has a good flame-retardant effect. Compared with the polyurethane foam prepared by adding a flame retardant The flame retardant pe...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G65/26C08G101/00
CPCC08G65/2612C08G18/4833C08G65/2627C08G65/2672C08G2101/00C08G2650/46C08G2650/50
Inventor 应珏翟洪金郑磊于文超王飞贡严军张学成任翠环
Owner JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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