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Permanent flame retardant high-activity polyether polyol and preparation method thereof

A high-activity polyether and polyol technology, which is applied in the field of polymers, can solve the problems of polyurethane foam combustion product toxicity, poor flame retardancy, and limited use range, and achieve simple and easy preparation methods and good flame retardancy , highly active effect

Active Publication Date: 2015-04-08
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the application of polyurethane foam in the market is becoming more and more extensive with the development, but the flammability of polyurethane foam and the toxicity of its combustion products limit its application range
Many people at home and abroad have devoted themselves to the flame retardant research of polyurethane foam plastics. The current flame retardant methods are mostly additive. Although this method is low in cost and easy to manufacture, it has the disadvantages of poor durability of flame retardant effect and unstable quality.

Method used

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  • Permanent flame retardant high-activity polyether polyol and preparation method thereof
  • Permanent flame retardant high-activity polyether polyol and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] The ratio of raw material components by weight: glycerol: 30 parts, KOH: 0.2 parts, epichlorohydrin: 20 parts, 3-(2,4,6-tribromophenoxy) 1,2-epoxypropane : 20 parts, PO: 90 parts and EO: 26 parts.

[0022] Preparation process steps:

[0023] (1) adding glycerol to a KOH aqueous solution with a concentration of 50 wt%, replacing with nitrogen to generate an intermediate containing active ions, and dehydrating at 120° C. for 2 hours;

[0024] (2) Add the mixture of epichlorohydrin, 3-(2,4,6-tribromophenoxy) 1,2-propylene oxide and PO to the intermediate generated in step (1), keep the temperature at 100°C, aging for 5 hours; after pressurizing to 0.12Mpa, add EO to block, keep the temperature at 105°C, aging for 4 hours, after monomer removal, post-treatment to obtain polyether.

Embodiment 2

[0026] The ratio of raw material components by weight: diethanolamine: 50 parts, KOH: 0.3 parts, epichlorohydrin: 30 parts, 3-(2,4,6-tribromophenoxy) 1,2-propylene oxide: 30 parts, PO: 140 parts and EO: 40 parts.

[0027] Preparation process steps:

[0028] (1) Diethanolamine is added to the KOH solid, replaced by nitrogen to generate an intermediate containing active ions, and dehydrated at 120° C. for 1 hour;

[0029] (2) Add the mixture of epichlorohydrin, 3-(2,4,6-tribromophenoxy) 1,2-propylene oxide and PO to the intermediate generated in step (1), keep the temperature at 105°C, aging for 4 hours; pressurize to 0.24Mpa, add EO to block, keep the temperature at 110°C, aging for 4 hours, after monomer removal, post-treatment to obtain polyether.

Embodiment 3

[0031] The ratio of raw material components by weight: propylene glycol: 20 parts, pentaerythritol: 40 parts, KOH: 0.2 parts, epichlorohydrin: 24 parts, 3-(2,4,6-tribromophenoxy) 1,2- Propylene oxide: 24 parts, PO: 110 parts and EO: 32 parts

[0032] Preparation process steps:

[0033] (1) adding pentaerythritol to a KOH aqueous solution with a concentration of 50 wt%, replacing with nitrogen to generate an intermediate containing active ions, and dehydrating at 120° C. for 2 hours;

[0034] (2) Add the mixture of epichlorohydrin, 3-(2,4,6-tribromophenoxy) 1,2-propylene oxide and PO to the intermediate generated in step (1), keep the temperature at 110°C, aging for 3 hours; after pressurizing to 0.15Mpa, add EO to block, keep the temperature at 115°C, aging for 3 hours, after removing the monomer, the polyether is obtained through post-treatment.

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Abstract

The invention provides permanent flame retardant high-activity polyether polyol which is prepared from the following raw material components in parts by weight: 30-60 parts of a polyhydric alcohol initiator, 0.2-1 part of an alkali catalyst, 20-70 parts of epoxy chloropropane, 20-70 parts of 3-(2,4-6-tribromophenoxyl)1,2-epoxypropane, 80-160 parts of PO and 25-80 parts of EO. The invention further provides a preparation method of the polyether polyol. Compared with the prior art, the polyether polyol is simple and feasible as well as scientific and reasonable, and a prepared product is good in flame retardancy and high in activity.

Description

technical field [0001] The invention relates to a polyether polyol, in particular to a permanent flame-retardant high-activity polyether polyol, which belongs to the field of macromolecules. Background technique [0002] At present, the application of polyurethane foam in the market is becoming more and more extensive with the development, but the flammability of polyurethane foam and the toxicity of its combustion products limit its application range. Many people at home and abroad have devoted themselves to the flame retardant research of polyurethane foam. The current flame retardant methods are mostly additive. Although this method is cheap and easy to manufacture, it has the disadvantages of poor durability of flame retardant effect and unstable quality. Contents of the invention [0003] The object of the present invention is to provide a kind of permanently flame-retardant high-activity polyether polyol, which has permanent flame-retardant and high-activity properti...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/48
Inventor 荆晓东李英豪董伟
Owner ZIBO DEXIN LIANBANG CHEM IND