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Polymerized modified polyaspartic acid ester compound and preparation method thereof

An aspartate, polymerized technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of high glass transition temperature, unusable, high price, etc., and achieves gel time increase and low investment cost. , the effect of simple process

Inactive Publication Date: 2013-04-10
ZHUHAI FEIYANG NOVEL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gel time of NH1420 resin is 15-20min, compared with the activation period of 3-4h polyurethane coating, it cannot be used in the field of traditional polyurethane coatings
Although NH-1520 has a long enough pot life, because of its high price and high Tg glass transition temperature, there is a serious cold and brittle phenomenon. It must be used with tough acrylic resin, which greatly limits its application range.

Method used

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  • Polymerized modified polyaspartic acid ester compound and preparation method thereof
  • Polymerized modified polyaspartic acid ester compound and preparation method thereof
  • Polymerized modified polyaspartic acid ester compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A: Add polyoxypropylene ether diol with an average molecular weight of 1000 into a four-necked flask, the amount added is 500 grams, the amount of organotin catalyst added is 0.1-2 grams, HMDI raw material 262 grams, react at 60-100 ° C for 6 -8h, until the NCO value no longer decreases, and the prepolymer of isocyanate is obtained.

[0029] B: React 762 grams of the above-mentioned isocyanate prepolymer with 544 grams of F420 polyaspartic acid ester monomer, add one of esters, ketones, benzenes or their mixed solvents, adjust the solid content to 60%, at 50 Incubate at -80°C for 2-4 hours to obtain the product.

[0030] C, F420 polyaspartate monomer system product of Zhuhai Feiyang Chemical Co., Ltd., molecular weight 544. Equivalent to foreign brand NH1420.

Embodiment 2

[0032] A: Add a difunctional saturated polyester with a molecular weight of 2000 into a four-necked flask, the addition amount is 500 grams, organic bismuth catalyst 0.1-2 grams, isophorone diisocyanate (IPDI) 111 grams, and react at 60-100 ° C for 6 -8h, until the NCO value no longer decreases, and the prepolymer of isocyanate is obtained.

[0033] B: React 611 grams of the above-mentioned isocyanate prepolymer with 277 grams of F420 polyaspartic acid ester monomer, add one of esters, ketones, benzenes or their mixed solvents, adjust the solid content to 60%, at 50 Incubate at -80°C for 2-4 hours to obtain the product.

Embodiment 3

[0035] A: Add 920 grams of F220 polyaspartate monomer into a four-necked flask, add 250 grams of MDI isocyanate, add one of esters, ketones, benzenes or their mixed solvents, and adjust the solid content to 60%. Incubate at 50-80°C for 2-4 hours to obtain the product.

[0036] B: The above-mentioned F220 polyaspartate monomer system is a product of Zhuhai Feiyang Chemical Co., Ltd., with a molecular weight of 460.

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Abstract

The invention relates to a coating raw material and discloses a polymerized modified polyaspartic acid ester compound, which has the following structural general formula shown in the specification, wherein R is alkyl with at most ten carbon atoms, Y is a chain extender, and X is a straight-chain or ring-shaped carbon chain structure. The invention also discloses a preparation method of the compound. Compared with the polyurea paint prepared by the polyaspartic acid ester, the polyurea paint prepared by using the compound disclosed by the invention as the raw material has the advantages of convenience in construction, prolonged gel time, shortened surface drying time, enhanced tensile strength, enhanced elongation at break and improved elastic film coating hardness.

Description

technical field [0001] The invention relates to paint raw materials, in particular to a polymeric modified polyaspartic acid ester compound for producing long gel time paint and a preparation method thereof. Background technique [0002] Polyaspartate monomers have the following structure: [0003] [0004] Wherein R is an alkyl group, and X is a linear or cyclic carbon chain structure. [0005] Polyaspartate reacts with appropriate isocyanate such as hexamethylene diisocyanate (HDI) trimer, and the coating film has excellent wear resistance, hardness, and UV aging resistance. It is an important class of polyurea polymer materials . Since the reaction between amino-terminated polyether and MDI semi-prepolymer in traditional spray polyurea elastomer (SPUA) only takes 5-45 seconds to gel, professional equipment must be used for construction; compared with this situation, polyaspartic acid The reaction gel time of acid ester and HDI trimer can be extended to more than 15 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/75C08G18/73C08G18/79C08G18/64C08G18/48C08G18/42C08G18/10C09D175/02
Inventor 张余英罗善锴邬茳崔治清蒋茶刘小卿肖增钧傅民
Owner ZHUHAI FEIYANG NOVEL MATERIALS
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