Flame-retardant polyether polyol as well as preparation method and application thereof

A polyether polyol and flame retardant technology, which is applied in the field of flame retardant polyether polyol and its preparation, can solve problems such as the decline of flame retardant performance, and achieve the effect of meeting the requirements of high flame retardant grade and meeting the requirements of flame retardant grade.

Inactive Publication Date: 2019-03-15
JIAHUA CHEM TECH DEV SHANGHAI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The additive flame retardant will migrate in the material with the prolongation of use time, resulting in a decrease in the flame retardant performance of the material; while the reactive flame retardant has a long-lasting flame retardant performance, which makes polyurethane products have higher heat resistance and dimensional stability sex and strength, is the focus of current research

Method used

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  • Flame-retardant polyether polyol as well as preparation method and application thereof
  • Flame-retardant polyether polyol as well as preparation method and application thereof
  • Flame-retardant polyether polyol as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The present embodiment provides a kind of Mannich base, has the structure shown in following formula (I-1):

[0053]

[0054] Mannich base shown in formula (I-1) is prepared by following steps:

[0055] (1) Add 52.6g of diethanolamine into a 250mL round bottom flask, stir, and heat to 40-45°C; then add 15g of paraformaldehyde (molecular weight: 30) into the flask in four batches. The interval time is 15 minutes, and the temperature is controlled at 50-55°C during the paraformaldehyde feeding process;

[0056] After adding paraformaldehyde, continue to react at 50°C for 3 hours to generate 3-hydroxyethyl-1,3-oxazolidine;

[0057] Raise the temperature to 100°C, dehydrate the generated 3-hydroxyethyl-1,3-oxazolidine under reduced pressure, so that the 3-hydroxyethyl-1,3-oxazolidine has a water content of ≤0.5%;

[0058] (2) Cool down to 60-65°C, add 83g of 2,4,6-tribromophenol (phenyl group represented by formula (I'-1) to 3-hydroxyethyl-1,3-oxazolidine compound), 2...

Embodiment 2

[0062] The present embodiment provides a kind of Mannich base, has the structure shown in following formula (I-2):

[0063]

[0064] Mannich base shown in formula (I-2) is prepared by following steps:

[0065] (1) Add 56.5g of diethanolamine into a 250mL round bottom flask, stir, and heat to 40-45°C; then add 15g of paraformaldehyde (molecular weight: 30) into the flask in four batches. The interval time is 15 minutes, and the temperature is controlled at 55-60°C during the paraformaldehyde feeding process;

[0066] After adding paraformaldehyde, continue to react at 55°C for 3 hours to generate 3-hydroxyethyl-1,3-oxazolidine;

[0067] Raise the temperature to 100°C, dehydrate the generated 3-hydroxyethyl-1,3-oxazolidine under reduced pressure, so that the 3-hydroxyethyl-1,3-oxazolidine has a water content of ≤0.5%;

[0068] (2) Cool down to 60-65°C, add 49.4g of 2,4,6-trichlorophenol (the phenyl group shown in formula (I'-2) to 3-hydroxyethyl-1,3-oxazolidine compound)),...

Embodiment 3

[0073] The present embodiment provides a kind of Mannich base, has the structure shown in following formula (I-3):

[0074]

[0075] Mannich base shown in formula (I-3) is prepared by following steps:

[0076] (1) Add 52.6g of diethanolamine into a 250mL round bottom flask, stir, and heat to 40-45°C; then add 15.75g of paraformaldehyde (molecular weight: 30) into the flask in four batches, each batch The feeding interval is 15 minutes, and the temperature is controlled at 50-55°C during the paraformaldehyde feeding process;

[0077] After adding paraformaldehyde, continue to react at 55°C for 3 hours to generate 3-hydroxyethyl-1,3-oxazolidine;

[0078] Raise the temperature to 100°C, dehydrate the generated 3-hydroxyethyl-1,3-oxazolidine under reduced pressure, so that the 3-hydroxyethyl-1,3-oxazolidine has a water content of ≤0.5%;

[0079] (2) Cool down to 60-65°C, add 71.6g of 2,6-dibromo-4-chlorophenol (formula (I'-3 shown in phenyl compound)), 2,6-dibromo-4-chloroph...

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Abstract

The invention discloses flame-retardant polyether polyol. Synthetic raw materials thereof include Mannich base and epoxide, wherein the epoxide is one or more of ethylene oxide, propylene oxide and butylene oxide; the Mannich base adopts a structure shown as a formula (I); in the Mannich base, flame-retardant halogen groups are introduced at the second, fourth and sixth positions of a phenyl group, and flame-retardant halogen and nitrogen elements are introduced into synthesized polyether polyol, so that the flame-retardant polyether polyol has good flame retardance; meanwhile, the amount of active hydrogen in the Mannich base is small, so that occurrence of a side reaction during synthesis of the polyether polyol is reduced and the viscosity of the flame-retardant polyether polyol is reduced. The invention further discloses a flame-retardant polyurethane material. Synthetic raw materials thereof include the flame-retardant polyether polyol and isocyanate. The flame-retardant polyurethane material has high flame retardance and mechanical property; in addition, due to autocatalytic performance of tertiary amido in the flame-retardant polyether polyol, use of a catalyst can be reduced or avoided during the synthesis.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant polyether polyol and its preparation method and application. Background technique [0002] Polyurethane (PU) material is the abbreviation of polyurethane. It is a polymer synthetic material with more carbamate groups in the main chain. It is generally made of polyether, polyester and polyolefin. Molecular polyol, which is formed by gradual addition polymerization with polyisocyanate and diol or diamine chain extender, its structure can be described by "soft segment" and "hard segment". Alcohol constitutes the soft segment, diisocyanate and chain extender constitute the hard segment; the soft segment provides the elasticity, toughness and low temperature performance of the PU material, and the hard segment provides the hardness, strength and modulus properties of the PU material. Polyurethane material is an emerging organic polymer material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G18/50C08J9/04C08L75/08
CPCC08G18/5033C08G65/2627C08G65/2639C08J9/04C08J2375/08C08G65/26C08G65/2696C08G18/5066C08G18/7664C08G18/482C08G18/4829C08G18/4883C08G18/1816C08G2110/0025C08G18/4841C08G18/4845C08K5/0066C08K5/17C08G65/2612C08G65/2624C08G18/5006
Inventor 关永坚李平李志君王锋李玉博
Owner JIAHUA CHEM TECH DEV SHANGHAI CO LTD
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