Preparation method of flame-retardant polymer polyol for high resilience

A flame-retardant polyol technology, which is applied in the field of preparation of high-resilience flame-retardant polymer polyols, can solve problems such as large smoke generation, high product viscosity, and harm to the environment, and achieve low cost and high viscosity. Low, low smoke effect

Active Publication Date: 2016-10-12
HANGJIN JINXI CHLOR-ALKALI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent CN10181217A discloses high solid content, low viscosity flame retardant polymer polyol, its products have certain flame retardancy, but the high viscosity of the product is not good for foaming, so it is only suitable for a single foaming formula
The highly active flame-retardant polyether polyol disclosed in Chinese invention patent CN101967228A is to synthesize halogenated polyether polyol first, and then replace it with tribromophenol. A large amount of smoke will produce a large amount of harmful gas, causing harm to the human body and environmental pollution, which does not meet the requirements of today's halogen-free flame retardant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In a 1000ml glass reactor, add 400g of polyether polyol, 120g of 37% formaldehyde, 50g of methanol, adjust pH=8, and react for one hour at 40~50℃ under stirring; 10g of melamine, 10g of dicyandiamide, urea Add 30g to the reaction kettle and react at 80-90°C for 2 hours; adjust the pH of the system to 6 and react at 80-90°C for 2 hours; then remove water and solvent under reduced pressure; obtain a milky white viscous liquid.

[0020] Product indicators:

[0021] Viscosity: 2000mpa.s / 25℃,

[0022] Hydroxyl value: 33mgKOH / g,

[0023] pH: 7.0,

[0024] Acid value: 0.10,

[0025] Moisture: <0.1,

[0026] Solid content: 20%.

Embodiment 2

[0028] In a 10-liter stainless steel reaction kettle, add 4000g of polyether polyol, 1300g of 37% formaldehyde, 150g of isopropanol, adjust the pH=8, and react for one hour at 40~50℃ under stirring; 100g of melamine, dicyandiamide Add 50g and 75g of urea into the reactor, and react at 80~90°C for 2 hours; adjust the pH of the system to 6, and react at 80~90°C for 2 hours; then remove the water and solvent under reduced pressure; liquid.

[0029] Product indicators:

[0030] Viscosity: 2600mpa.s / 25℃,

[0031] Hydroxyl value: 31mgKOH / g,

[0032] pH: 8.0,

[0033] Acid value: 0.16,

[0034] Moisture: <0.1.

Embodiment 3

[0036] High resilience foam preparation:

[0037] 70-30 parts of highly active polyether,

[0038] Flame-retardant polymer polyol 30-70 parts,

[0039] 3 parts of cross-linking agent,

[0040] 1 part foam stabilizer,

[0041] 3 parts foaming agent,

[0042] 0.2 part of tin catalyst,

[0043] 0.4 part of amine catalyst,

[0044] TDI index 1.06.

[0045] Mix the above materials thoroughly, pour into the mold to foam, and mature for 72 hours to become a high-resilience polyurethane foam.

[0046] Flame retardant high resilience foam index:

[0047] Density: 59.5 kg / m 3 ,

[0048] Rebound: 67.6%,

[0049] Tensile strength: 31.4 kg / cm 2 ,

[0050] Tear strength: 62.5 kg / cm,

[0051] Compressive strength: 50.3kg / 314cm 2 ,

[0052] Smoke density: 30%,

[0053] Oxygen Index: 31.5%.

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Abstract

The invention proposes a method for preparing a flame-retardant polymer polyol for high resilience. After the preparation process of flame retardant selection and matching and polymerization reaction, it becomes a flame retardant polymer polyol product. The polymer polyol prepared by the method of the invention has low cost and low viscosity, and its products have flame retardancy, low smoke emission, no toxic gas is emitted during combustion, and the physical properties of the products are not reduced. It is suitable for use in the preparation of flame-retardant polymer polyols for high resilience.

Description

technical field [0001] The invention relates to a production method of a chemical product, in particular to a preparation method of a flame-retardant polymer polyol for high resilience. Background technique [0002] Usually, the production method of polymer polyol is to use polyether polyol as mother liquor, unsaturated olefins such as styrene and acrylonitrile as polymerized monomer, and carry out self-polymerization or copolymerization under the action of azo initiator. Polyurethane products produced with this product are not flame retardant. [0003] At present, the flame retardant technology of polyurethane products is divided into two categories: additive type and reactive type. The additive type is to add phosphorus-containing or phosphorus- and halogen-containing flame-retardant additives to polyether polyols and polymer polyols, which are raw materials for the production of polyurethane products, to achieve flame-retardant effects. This method has the disadvantages...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/00C08G18/50
Inventor 王兵张格亮靖勇刘博赵哲孙艳荣苏立刚杨天宇吴越钱永存
Owner HANGJIN JINXI CHLOR-ALKALI CHEM CO LTD
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