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Amino resin with polyhydroxy structure and preparation method thereof

A kind of amino resin, polyhydroxyl technology, applied in the field of amino resin and its preparation, can solve the problem of limitation, no hydroxyl or amino group and the like

Active Publication Date: 2011-12-28
杨彦威 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the polyurethane industry, it is limited because the amino resins currently on the market do not have hydroxyl groups or amino groups that can react with isocyanates.

Method used

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  • Amino resin with polyhydroxy structure and preparation method thereof
  • Amino resin with polyhydroxy structure and preparation method thereof
  • Amino resin with polyhydroxy structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of Ethylene Glycol Etherified Polyhydroxy Amino Resin

[0032] 1. Product Description

[0033] Product Name: Ethylene Glycol Etherified Polyhydroxyl Amino Resin

[0034] Molecular weight: 570.11

[0035] Molecular Structure:

[0036]

[0037] Quality Index

[0038] Appearance: light yellow transparent viscous liquid

[0039] Acid value: (mgKOH / g) ≤0.02

[0040] Chromaticity: (APHA) ≤35

[0041] Ignition point: ℃ ------

[0042] Specific gravity: (20 / 25°C) 1.017-1.023

[0043] Moisture:% ≤0.1

[0044] Physical and chemical properties: light yellow transparent viscous liquid; viscosity: 12000mPa.S / 25°C; refractive index: n25 = 1.432-1.438; solubility in water at 20°C: miscible; Alcohol, phosphate ester and other solvents.

[0045] Uses: Reactive polyurethane resin flame retardant. Flame retardant polyether starter.

[0046] 2. Synthesis technology

[0047] 1. Raw material ratio

[0048]

[0049]

[0050] 2. Synthesis process

[0051] 1) H...

Embodiment 2

[0067] Synthesis of Propylene Glycol Etherified Polyhydroxyl Amino Resin

[0068] 1. Product Description

[0069] Product Name: Propylene Glycol Etherified Polyhydroxy Amino Resin

[0070] Molecular weight: 654.16

[0071] Molecular Structure:

[0072]

[0073] Quality Index:

[0074] Appearance: light yellow transparent viscous liquid

[0075] Acid value: (mgKOH / g) ≤0.02

[0076] Chromaticity: (APHA) ≤35

[0077] Ignition point: ℃ ------

[0078] Specific gravity: (20 / 25°C) 1.011-1.017

[0079] Moisture:% ≤0.1

[0080] Physical and chemical properties: pale yellow transparent viscous liquid; solubility in water at 20°C: mutual solubility; specific gravity: (20 / 25°C): 1.011-1.017; soluble in alcohol, phosphate ester and other solvents.

[0081] Uses: Reactive polyurethane resin flame retardant. Flame retardant polyether starter.

[0082] 2. Synthesis technology

[0083] Synthesis of Methylated Amino Resin

[0084] 1. Raw material ratio

[0085]

[0086] 2. Sy...

Embodiment 3

[0103] Synthesis of Diethylene Glycol Etherified Polyhydroxyl Amino Resin

[0104] 1. Product Description

[0105] Product name: Diethylene glycol etherified polyhydroxy amino resin

[0106] Molecular weight: 834.28

[0107] Molecular Structure:

[0108]

[0109] Quality Index:

[0110] Appearance: light yellow transparent viscous liquid

[0111] Acid value: (mgKOH / g) ≤0.02

[0112] Chromaticity: (APHA) ≤35

[0113] Ignition point: ℃ ------

[0114] Specific gravity: (20 / 25°C) 1.016-1.022

[0115] Moisture:% ≤0.1

[0116] Physical and chemical properties: light yellow transparent viscous liquid; solubility in water at 20°C: miscible; specific gravity: (20 / 25°C): 1.016-1.022; soluble in alcohol, phosphate ester and other solvents.

[0117] Uses: Reactive polyurethane resin flame retardant. Flame retardant polyether starter.

[0118] 2. Synthesis technology

[0119] Synthesis of Methylated Amino Resin

[0120] 1. Raw material ratio

[0121]

[0122] 2. Synthe...

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PUM

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Abstract

The invention discloses an amino resin having a polyhydroxy structure, and a preparation method thereof. The molecular structure of the amino resin having the polyhydroxy structure contains 4-6 hydroxy groups. The preparation method for the amino resin comprises: 1) carrying out a hydroxymethylation reaction for melamine; 2) carrying out a methyl etherification reaction; 3) carrying out alkali neutralization; 4) carrying out distilling to remove water, methanol and formaldehyde; 5) carrying out cooling and filtering; 6) carrying out an ether exchanging reaction; 7) carrying out distilling to remove alcohol, then carrying out cooling and filtering to obtain the finished product. The prepared amino resin having the polyhydroxy structure through the preparation method provided by the presentinvention has a purity more than 98.0%, is mainly applicable for preparing cross linking agents for polyurethane products, initiators for fire-retardant polyethers, and provides excellent fire resistance property for the polyurethane products (reaction type polyurethane fire retardants).

Description

technical field [0001] The invention relates to an amino resin with a polyhydroxy structure and a preparation method thereof, belonging to the field of organic synthesis. Background technique [0002] Amino resin has non-combustible characteristics, and it can be used together with phosphoric acid ester to form phosphorus-nitrogen intumescent flame retardant, which has attracted more and more attention. However, in the polyurethane industry, it is limited because the amino resins currently on the market do not have hydroxyl groups or amino groups that can react with isocyanates. [0003] In the present invention, the amino resin is passed through an ether exchange process, and the methyl groups on the amino resin are exchanged into an amino resin with 4-6 hydroxyl groups, thereby becoming a flame retardant that can be cross-linked with isocyanate. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an amino resin wi...

Claims

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Application Information

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IPC IPC(8): C07D251/64C08G18/32
Inventor 杨彦威吴卫林邢礼娜施海云施剑锋石学华
Owner 杨彦威
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