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Anti-aging aqueous polyurethane coating

A water-based polyurethane, anti-aging technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of easy oxidation of polyurethane, and achieve the effects of improving aging resistance, high thermal stability of rare earths, and strong reducibility

Inactive Publication Date: 2018-09-04
TIANCHANG JULONG TRAVEL PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the technical problems existing in the background technology, the present invention proposes an aging-resistant water-based polyurethane coating, which solves the problem that polyurethane is easily oxidized, and improves the service life and safety performance of the coating

Method used

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  • Anti-aging aqueous polyurethane coating

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Effect test

Embodiment 1

[0015] An aging-resistant water-based polyurethane coating, whose raw materials in parts by weight include: 90 parts by weight of water-based polyurethane, 2 parts of N,N-bis(carboxyethylphenylphosphinyl) p-phenylenediamine lanthanum, 1 part of microcrystalline paraffin, and Ion-associative thickener 0.5 parts, dimethyl silicone oil 0.05 parts, dimethyl polysiloxane 0.5 parts, lauryl phosphate 1 part, propylene glycol butyl ether 2 parts.

Embodiment 2

[0017] An aging-resistant water-based polyurethane coating, whose raw materials by weight include: 120 parts by weight of water-based polyurethane, 4 parts of N,N-bis(carboxyethylphenylphosphinyl) p-phenylenediamine lanthanum, 2.5 parts of microcrystalline paraffin, non- 2 parts of ion-associative thickener, 0.5 parts of polyoxyethylene glyceryl ether, 2 parts of dimethyl polysiloxane, 2 parts of dodecyl phosphate, 8 parts of propylene glycol methyl ether acetate.

Embodiment 3

[0019] An aging-resistant water-based polyurethane coating, whose raw materials by weight include: 100 parts by weight of water-based polyurethane, 2.5 parts of N,N-bis(carboxyethylphenylphosphinyl) p-phenylenediamine lanthanum, 1.5 parts of microcrystalline paraffin, and 0.8 parts of ion-associative thickener, 0.1 part of dimethyl silicone oil, 1 part of dimethyl polysiloxane, 1.2 parts of dodecyl phosphate, 3 parts of propylene glycol butyl ether.

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Abstract

The invention discloses an anti-aging aqueous polyurethane coating. The coating is prepared from the following raw materials: aqueous polyurethane, N,N-bis[2-carboxylethyl(phenyl)phosphinic acid]p-phenylenediamine lanthanum, microcrystalline wax, a thickening agent, a defoaming agent, a flatting agent, a dispersing agent and a coalescing agent. The N,N-bis[2-carboxylethyl(phenyl) phosphinic acid]p-phenylenediamine lanthanum and the microcrystalline wax, which are in a reasonable proportion, are adopted to match mutually to make up an anti-aging system of the aqueous polyurethane coating, the problem that polyurethane is easy to oxidize is solved, the service life of the coating is prolonged, and the safety performance of the coating is improved.

Description

Technical field [0001] The invention relates to the technical field of aging resistance, in particular to an aging resistance waterborne polyurethane coating. Background technique [0002] Polyurethane molecular chain contains isocyanate group and urethane group, which is obtained by polymerization of isocyanate, polyol and chain extender. Due to its unique molecular structure, polyurethane has good flexibility and elasticity, good wear resistance, impact resistance, low temperature resistance, and can be used for a long time at -60-120°C. However, whether TDI or MDI is used as the raw material, because the isocyanate group is directly connected to the benzene ring, it is easy to form a conjugate with the adjacent NCO bond. When exposed to light, heat, oxygen, especially ultraviolet light, it will cause urethane After the benzene ring on the aromatic amine is oxidized and rearranged, chromophoric groups such as quinone structure are generated. This makes the polyurethane product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/65C09D7/63
CPCC09D175/04C08L2201/08C08L2205/025C08L2205/035C09D7/63C09D7/65C08L91/06C08L83/04C08K5/521C08K5/5399C08L71/02
Inventor 孙巨福
Owner TIANCHANG JULONG TRAVEL PAINT