Flame-retardant polyether polyol with nitrogen structure and preparation method thereof

A flame-retardant polyether and polyol technology, applied in the field of polymer synthesis research, can solve the problems of high temperature and high pressure, high cost, etc., achieve low flammability, low smoke, and improve load-carrying performance

Inactive Publication Date: 2015-01-07
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the technical problems of high temperature, high pressure and high cost in the production of traditional flame-retardant polyether polyols, and to provide a nitrogen-containing structure flame-retardant polyol with low production cost and large-scale production under normal pressure and low temperature. Ether polyol method

Method used

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  • Flame-retardant polyether polyol with nitrogen structure and preparation method thereof

Examples

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Effect test

Embodiment 1

[0041] A flame retardant polyether polyol with a nitrogen-containing structure, calculated in parts by weight, its raw material composition and content are as follows:

[0042] Phenol 10.0 parts

[0043] Formaldehyde 18.0 parts

[0044] Basic catalyst 0.01 part

[0045] Melamine 5.0 parts

[0046] Co-initiator 3.0 parts

[0047] Epichlorohydrin 100.0 parts

[0048] Polymerization catalyst 1.0 parts

[0049] Described formaldehyde is the formaldehyde aqueous solution that mass percent concentration is 37%;

[0050] Described alkaline catalyst is the NaOH aqueous solution that mass percent concentration is 15%;

[0051] Described co-initiator is glycerol;

[0052] The polymerization catalyst is a NaOH aqueous solution with a concentration of 30% by mass.

[0053] The preparation method of the flame-retardant polyether polyol of above-mentioned a kind of nitrogen-containing structure specifically comprises the following steps:

[0054] (1) Add phenol into a 250 mL four-n...

Embodiment 2

[0060] A flame retardant polyether polyol with a nitrogen-containing structure, calculated in parts by weight, its raw material composition and content are as follows:

[0061] Phenol 5.0 parts

[0062] Formaldehyde 15.0 parts

[0063] Basic catalyst 0.008 part

[0064] Melamine 5.0 parts

[0065] Co-initiator 2.0 parts

[0066] Epichlorohydrin 55.0 parts

[0067] Polymerization catalyst 0.5 parts

[0068] Described formaldehyde is the formaldehyde aqueous solution that mass percent concentration is 35%;

[0069] Described alkaline catalyst is the KOH aqueous solution that mass percent concentration is 20%;

[0070] Described co-initiator is triethanolamine;

[0071] The polymerization catalyst is a 40% KOH aqueous solution by mass percent.

[0072] The preparation method of the flame-retardant polyether polyol of above-mentioned a kind of nitrogen-containing structure specifically comprises the following steps:

[0073] (1) Add phenol into a 250 mL four-neck flask an...

Embodiment 3

[0079] A flame retardant polyether polyol with a nitrogen-containing structure, calculated in parts by weight, its raw material composition and content are as follows:

[0080] Phenol 20.0 parts

[0081] Formaldehyde 45.0 parts

[0082] Basic catalyst 0.02 parts

[0083] Melamine 15.0 parts

[0084] Co-initiator 5.0 parts

[0085] Epichlorohydrin 85.0 parts

[0086] Polymerization catalyst 1.6 parts

[0087] Described formaldehyde is the formaldehyde aqueous solution that mass percent concentration is 40%;

[0088] Described basic catalyst is the barium hydroxide aqueous solution that mass percent concentration is 20%;

[0089] Described co-initiator is glycerol;

[0090] The polymerization catalyst is boron trifluoride etherate complex.

[0091] The preparation method of the flame-retardant polyether polyol of above-mentioned a kind of nitrogen-containing structure specifically comprises the following steps:

[0092] (1) Add phenol into a 250 mL four-neck flask and h...

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Abstract

The invention discloses a flame-retardant polyether polyol with a nitrogen structure and a preparation method thereof. The flame-retardant polyether polyol with the nitrogen structure is prepared from the following components in parts by weight: 5-20 parts of phenol, 10-60 parts of formaldehyde, 0.001-0.05 part of a basic catalyst, 5-20 parts of melamine, 2-10 parts of a co-initiator, 60-150 parts of epoxy chloropropane and 0.05-2.5 parts of a polymerization catalyst. The preparation method comprises the following steps: heating and melting phenol, and adding the basic catalyst and formaldehyde to react for 1-4 hours to obtain resol; adding melamine to keep on reacting to obtain hydroxymethylated melamine-phenolic resin; and adding the co-initiator, epoxy chloropropane and the polymerization catalyst, heating to 70-100 DEG C to react for 16-24 hours, and reacting in vacuum at 100-130 DEG C for 1-2 hours to obtain the flame-retardant polyether polyol with the nitrogen structure. The preparation method is easy to operate, does not need high-pressure reactions, and has low cost.

Description

technical field [0001] The invention relates to a flame-retardant polyether polyol with a nitrogen-containing structure and a preparation method thereof, belonging to the research field of polymer synthesis. Background technique [0002] Polyether polyol is one of the key raw materials for the preparation of rigid polyurethane foam, and it is usually required to have a flame retardant function. [0003] At present, there are two ways of flame retardant treatment of polyurethane rigid foam: [0004] One method is to add flame retardants, such as nitrogen-rich compound melamine or melamine derivatives, which are the most commonly used additive flame retardants because of their six-membered heterocyclic structure with excellent thermal stability. Although the additive flame retardant can improve the flame retardant performance of rigid polyurethane foam to a certain extent, the problem of flame retardant failure occurs due to the dialysis and migration of flame retardants. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G65/26
Inventor 贾润萍魏路何新耀黄茂松
Owner SHANGHAI INST OF TECH
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