A kind of flame-retardant phosphorus-containing polyaspartic acid ester and its synthesis method

A technology of polyaspartic acid ester and synthesis method, which is applied in the direction of polyurea/polyurethane adhesive, polyurea/polyurethane coating, adhesive type, etc., to achieve expanded application, simple and feasible synthesis method, excellent flame retardant type Effect

Active Publication Date: 2022-03-11
SHENZHEN FEIYANG JUNYAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There is no research on the flame retardant properties of phosphorus-containing polyaspartate

Method used

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  • A kind of flame-retardant phosphorus-containing polyaspartic acid ester and its synthesis method
  • A kind of flame-retardant phosphorus-containing polyaspartic acid ester and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The flame-retardant phosphorus-containing polyaspartate provided by the embodiments of the present invention has the following structure:

[0037] .

[0038] The synthesis method is as follows:

[0039] first step:

[0040] Weigh 1-methyl-2,4-cyclohexanediamine (2.56g, 0.02mol), phenylphosphonic dichloride (1.95g, 0.01mol), 1.5% 1-methyl-2 , 4-Cyclohexanediamine mass of AlCl 3 (0.03 grams);

[0041] Under an inert gas atmosphere, add a dropping funnel, a stirrer, anhydrous CaCl 2 Add 1-methyl-2,4-cyclohexanediamine, 3mL triethylamine and 20mL tetrahydrofuran to the condensing reflux device in the protection tube, and cool to 0°C in an ice-water bath; then add AlCl 3 , Dissolve phenylphosphonic dichloride in 10 mL of tetrahydrofuran, add dropwise within 1 hour, and react at 30°C for 24 hours to obtain phosphoramide.

[0042] Step two:

[0043] Under an inert gas atmosphere, add the phosphonamide synthesized above to excess diethyl maleate (five equivalents), slo...

Embodiment 2

[0045] The flame-retardant phosphorus-containing polyaspartate provided by the embodiments of the present invention has the following structure:

[0046] .

[0047] The difference between the preparation method of this example and Example 1 is that phenylphosphonic dichloride (1.95 g, 0.01 mol) was replaced by p-methoxyphenyl phosphonic dichloride (2.24 g, 0.01 mol).

Embodiment 3

[0049] The flame-retardant phosphorus-containing polyaspartate provided by the embodiments of the present invention has the following structure:

[0050] .

[0051] The difference between the preparation method of this example and Example 1 is that phenylphosphonodichloride (1.95 g, 0.01 mol) is replaced by phenylphosphonodibromide (2.82 g, 0.01 mol).

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Abstract

The invention discloses a flame-retardant phosphorus-containing polyaspartic acid ester and a synthesis method thereof, and relates to the technical field of polyaspartic acid ester materials. The flame-retardant phosphorus-containing polyaspartic acid ester provided by the invention introduces phosphoryl groups into the molecular structure, and constructs the phosphorus-containing polyaspartic acid ester with flame-retardant performance on the basis of the original performance. Experiments have proved that the flame-retardant phosphorus-containing polyaspartic acid ester provided by the present invention has better flame-retardant performance than traditional aspartic polyurea resins, and can be prepared into coatings together with traditional aspartic polyurea resins, taking into account the The traditional aspartic polyurea resin has excellent mechanical properties, and has added an excellent flame-retardant type, which greatly expands the application of polyaspartic acid ester and has market value.

Description

technical field [0001] The invention relates to the technical field of polyaspartic acid ester materials, in particular to a flame-retardant phosphorus-containing polyaspartic acid ester and a synthesis method thereof. Background technique [0002] Polyaspartate is a new type of hindered amine developed in recent years. The curing reaction of polyaspartate with polyisocyanate can form polyurea resin. Polyaspartate derivatives with different reaction speeds and different physical properties can be obtained by reacting and curing polyaspartic acid esters with polyisocyanates. The coating films of their derivatives have excellent yellowing resistance, UV aging resistance and wear resistance. performance, so it is widely used in coatings, waterproofing, adhesives, printed circuit boards, electronic packaging materials, composite materials, heavy machinery, reservoir dams and automobiles. But the limiting oxygen index (LOI) of aspartic polyurea resin is only about 18%, which is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G71/02C09D175/02C09D5/18C09J175/02
CPCC08G71/02C09D175/02C09D5/18C09J175/02
Inventor 熊东路易松杨轩徐涛龙绪俭肖增钧李斌仁鲁晓东
Owner SHENZHEN FEIYANG JUNYAN TECH DEV
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