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Heat-resisting flame-retardant isocyanurate-ring-containing polyether polyol with controllable hard segment/soft segment ratio and preparation method thereof

A technology of isocyanurate and oxypropyl isocyanurate, which is applied in the field of heat-resistant flame-retardant polyether polyol and its preparation, can solve the problem that the molecular weight of polyether polyol is difficult to control, and avoid Process, easy to achieve, low equipment requirements

Active Publication Date: 2014-06-04
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this reaction needs to be carried out in a high-pressure reactor, and the molecular weight of the synthesized polyether polyol is not easy to control

Method used

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  • Heat-resisting flame-retardant isocyanurate-ring-containing polyether polyol with controllable hard segment/soft segment ratio and preparation method thereof
  • Heat-resisting flame-retardant isocyanurate-ring-containing polyether polyol with controllable hard segment/soft segment ratio and preparation method thereof
  • Heat-resisting flame-retardant isocyanurate-ring-containing polyether polyol with controllable hard segment/soft segment ratio and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Diethylene glycol-TGIC polyether polyol

[0032] 1) Product Description

[0033] Molecular weight: 615.6g / mol

[0034] Molecular Structure:

[0035]

[0036] Appearance: light yellow transparent liquid

[0037] Hydroxyl value: 540mgKOH / g

[0038] Moisture: ≤0.5wt%

[0039] Uses: rigid polyurethane foam

[0040] 2) Synthesis technology

[0041] Chemical reaction formula:

[0042]

[0043] Synthetic steps:

[0044] a. Add 31.8kg of diethylene glycol into the reaction kettle, raise the temperature to 90°C, and start the mechanical stirring;

[0045] b. Add 29.7kg triglycidyl isocyanurate into the above reaction kettle in 5 times within 45min;

[0046] c. After step b is completed, the temperature is raised to 140° C., and the epoxy group and the hydroxyl group are subjected to a ring-opening reaction, and the reaction is performed for 2 hours, and the stirring is stopped;

[0047] d. Naturally cool to room temperature to obtain 61kg product diethylene glyco...

Embodiment 2

[0049] Triethylene glycol-TGIC polyether polyol

[0050] 1) Product Description

[0051] Molecular weight: 747g / mol

[0052] Molecular Structure:

[0053]

[0054] Appearance: light yellow transparent liquid

[0055] Hydroxyl value: 450mgKOH / g

[0056] Moisture: ≤0.5wt%

[0057] Uses: rigid polyurethane foam

[0058] 2) Synthesis technology

[0059] Chemical reaction formula:

[0060]

[0061] Synthetic steps:

[0062] a. Add 45kg of triethylene glycol into the reaction kettle, raise the temperature to 100°C, and start the mechanical stirring;

[0063] b. Add 29.7kg triglycidyl isocyanurate into the above reaction kettle in 5 times within 1 hour;

[0064] c. After step b is completed, the temperature is raised to 150° C., and the epoxy group and the hydroxyl group are subjected to a ring-opening reaction, and the reaction is 3 hours, and the stirring is stopped;

[0065] d. Cool naturally to room temperature to obtain 74kg of product triethylene glycol-TGIC pol...

Embodiment 3

[0067] Polyethylene glycol 200-TGIC polyether polyol

[0068] 1) Product Description

[0069] Molecular weight: 897g / mol

[0070] Molecular Structure:

[0071]

[0072] Appearance: light yellow transparent liquid

[0073] Hydroxyl value: 375mgKOH / g

[0074] Moisture: ≤0.5wt%

[0075] Uses: rigid polyurethane foam

[0076] 2) Synthesis technology

[0077] Chemical reaction formula:

[0078]

[0079] Synthetic steps:

[0080] a. Add 60kg polyethylene glycol 200 into the reaction kettle, raise the temperature to 110°C, and start the mechanical stirring;

[0081] b. Add 29.7kg triglycidyl isocyanurate into the above reaction kettle in 5 times within 75min;

[0082]c. After step b is completed, the temperature is raised to 160° C., and the epoxy group and the hydroxyl group are subjected to a ring-opening reaction, and the reaction is 2.5 hours, and the stirring is stopped;

[0083] d. Naturally cool to room temperature to obtain 89kg of product polyethylene glycol ...

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Abstract

The invention discloses heat-resisting flame-retardant isocyanurate-ring-containing polyether polyol with a controllable hard segment / soft segment ratio and a preparation method thereof. The polyether polyol and the preparation method thereof are characterized in that: the chemical formula of the heat-resisting flame retardant polyether polyol is shown in the specification, wherein R is (CH2-CH2-O)n or (CHCH3CH2O)n, with the n being not less than 1, or the R is (CH2)m-O, with the m being not less than 2 and not more than 6. According to the preparation method, the isocyanurate-ring-containing polyether polyol is prepared by subjecting three epoxy groups of triglycidyl isocyanurates (TGIC) and hydroxy of diol to a ring opening reaction through a one-step method. The reaction system is free of addition of extra additives and catalysts, thus avoiding tedious post-treatment processes. The reaction is preformed under atmospheric pressure, has low requirements for equipment, and is liable to achieve and simple in operation.

Description

technical field [0001] The invention relates to a heat-resistant flame-retardant polyether polyol and a preparation method thereof, belonging to the field of organic synthesis. Background technique [0002] Polyether polyols refer to oligomers containing ether bonds (—R—O—R—) in the main chain and hydroxyl (OH) in the molecular end groups (or / and side groups), mainly used for the preparation of rigid polyurethane foams . Studies have shown that introducing a heterocyclic structure with better thermal stability into polyether polyol molecules can make the resulting polyurethane material have better thermal stability and flame retardancy. The isocyanurate ring is a very stable three-membered six-membered ring, and its structure is shown in Formula 2: [0003] [0004] There is no active hydrogen on the isocyanurate ring structure, and it has high thermal stability, hydrolytic stability and rigidity. At present, polyether polyols containing isocyanurate ring structure hav...

Claims

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Application Information

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IPC IPC(8): C08G65/48C07D251/34
Inventor 胡源杨宏宇邢伟义宋磊
Owner UNIV OF SCI & TECH OF CHINA
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