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Flame retardant soft foam polyether polyol and synthesis method thereof

A flame retardant polyether and polyol technology, applied in the field of flexible foam flame retardant polyether polyol and its synthesis, can solve the problem that the flame retardant effect is not obvious, the physical and mechanical properties of the foam collapsed, and the performance advantages are lost, etc. problems, to achieve the effects of small physical and mechanical properties, high oxygen index, and easy foaming

Active Publication Date: 2015-01-14
SHANDONG BLUSR DONGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The method of adding flame retardants often causes physical and mechanical properties such as foam collapse, cracking, pulverization, or rebounding to be greatly reduced, and loses its own performance advantages, and these flame retardants have no flame retardant effect when added alone Not obvious

Method used

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  • Flame retardant soft foam polyether polyol and synthesis method thereof
  • Flame retardant soft foam polyether polyol and synthesis method thereof
  • Flame retardant soft foam polyether polyol and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Add 63g of melamine and 122g of formaldehyde solution with a mass fraction of 37% to a 5L stainless steel reactor, and react at 70°C for 1h to obtain a melamine-formaldehyde condensate; then add 216g of diethylamine and continue the reaction for 1h; heat up to 80°C, add Nitric acid 108g, internal pressure reaction for 2h; temperature 105°C, dehydration under reduced pressure until the water content ≤ 0.1%, to obtain a polyether initiator with a hydroxyl value of 193.5mgKOH / g.

[0035] Add 5.2g KOH to the reaction kettle, raise the temperature to 110°C, start to add 2580g ethylene oxide continuously, control the pressure ≤ 0.44MPa, react for 5 hours after adding to obtain crude polyether, and obtain soft foam flame-retardant polyether polyol after neutralization and refining .

Embodiment 2

[0037] Add 63g of melamine and 122g of formaldehyde solution with a mass fraction of 37% to a 5L stainless steel reactor, and react at 70°C for 1 hour to obtain a melamine-formaldehyde condensate; add 183g of ethanolamine and continue the reaction for 1 hour; heat up to 80°C, and add 196g of phosphoric acid , internal pressure reaction for 2 hours; temperature 105° C., dehydration under reduced pressure until the moisture content is ≤0.1%, and a polyether initiator with a hydroxyl value of 215 mgKOH / g is obtained.

[0038] Add 4.9g NaOH to the reaction kettle, raise the temperature to 110°C, start to continuously add 2440g propylene oxide, control the pressure ≤ 0.44MPa, react for 5 hours after adding to obtain crude polyether, and obtain soft foam flame-retardant polyether polyol after neutralization and refining.

Embodiment 3

[0040] Add 63g of melamine and 122g of formaldehyde solution with a mass fraction of 37% to a 5L stainless steel reactor, and react at 70°C for 1h to obtain a melamine-formaldehyde condensate; then add 324g of diethanolamine and continue the reaction for 1h; Phosphoric acid 216g, internal pressure reaction for 2h; temperature 105°C, dehydration under reduced pressure to a moisture content of ≤0.1%, to obtain a polyether initiator with a hydroxyl value of 156.3mgKOH / g.

[0041] Add 5.8 g CH to the reactor 3 Ona, raise the temperature to 110°C, start to add 2340g propylene oxide continuously, control the pressure ≤ 0.44MPa, react for 5h after adding to obtain crude polyether, and obtain soft foam flame-retardant polyether polyol after neutralization and refining.

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Abstract

The invention relates to a flame retardant soft foam polyether polyol and a synthesis method thereof. The technical scheme is to provide the flame retardant soft foam polyether polyol which is good in flame retardant property, safe and non-toxic, simple in preparation process and low in cost and the synthesis method of the flame retardant soft foam polyether polyol. The synthesis method disclosed by the invention comprises the following steps of enabling melamine-formaldehyde condensation compound to react with amine compounds, polymerizing the reaction product with an acid compound to obtain a polyether initiator, further polymerizing the polyether initiator with oxyalkylene with the action of a base metal catalyst so as to obtain the flame retardant polyether polyol. The flame retardant polyether polyol synthesized by the method has the advantages of light colour, low viscosity and good material flowability, and can be widely used for preparing the flame retardant polyether soft foam. The flame retardant soft polyether foam plastic products foamed and prepared by the flame retardant polyether polyol disclosed by the invention have the characteristics of good flame retardant effect, high oxygen index, good foam uniformity, good size stability and high mechanical strength.

Description

technical field [0001] The invention relates to a flexible foam flame-retardant polyether polyol and a synthesis method thereof. The flexible foam flame-retardant polyether polyol can be used in the preparation of flame-retardant flexible polyurethane foam plastics. Background technique [0002] In recent years, polyurethane materials have developed rapidly in my country because of their many excellent properties. Among them, flexible foam plastics, which account for a large part of polyurethane production, are light and soft, insulating, breathable, good resilience, small compression deformation, excellent moisture resistance and aging resistance, and have many excellent properties such as oil resistance, organic solvent resistance, sound insulation, and heat preservation. , extremely versatile, has been widely used in various fields. But at the same time, due to the low density and large specific surface area, flexible foams are easily ignited and burned, and the burning ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/26C08G18/48C08G101/00
Inventor 段艳芳
Owner SHANDONG BLUSR DONGDA CHEM
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