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Low-speed polyurea under-top integrated coating material and preparation method therefor

A polyurea and bottom surface technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem that the application of high gloss requirements cannot be applied, and achieve the effect of excellent weather resistance and salt spray resistance, and fast drying speed.

Active Publication Date: 2019-12-03
湘江涂料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The recorded gloss of the coating film is lower than 90%, which cannot be applied to occasions with high gloss requirements

Method used

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  • Low-speed polyurea under-top integrated coating material and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this embodiment, the slow-speed polyurea bottom and surface all-in-one coating is formed by mixing base material with 35.1 parts by mass of DESMODUR N3390 BA / SN curing agent (HDI trimer, Covestro Co., Germany); Particic acid ester resin (polymer A prepared by 18.0 mass parts reference example 1, 3.0 mass parts F420 resin), 3.0 mass parts trimethyletherified melamine formaldehyde resin (80% solid content), 18.0 mass parts cardanol phenolic alkamine (comprising 13.0 parts by mass of compound C prepared by reference example 2, 5.0 parts by mass of compound D prepared by reference example 3), 20.3 parts by mass of ultrafine barium sulfate, 23.0 parts by mass of medium yellow, 0.3 parts by mass of iron red, 0.5 parts by mass of gas phase two Silicon oxide, 0.3 parts by mass of defoamer, 0.4 parts by mass of leveling agent, 0.4 parts by mass of dispersant, 0.5 parts by mass of ultraviolet light absorber and 9.5 parts by mass of solvent are mixed.

[0036] The preparation m...

Embodiment 2

[0042] In this embodiment, the slow-speed polyurea bottom and surface all-in-one coating is mixed with 34.8 parts by mass of DESMODUR N3390 BA / SN curing agent (HDI trimer, Covestro Co., Germany); the base material is composed of 21.0 parts by mass of polytianmen Particic acid ester resin (wherein 18.0 mass parts polymer A, 3.0 mass parts F420 resin), 3.0 mass parts trimethyl etherified melamine formaldehyde resin (80% solid content), 18.0 mass parts cashew nut phenolic phenalkamine (comprising 13.5 mass parts Compound C, 4.5 parts by mass of compound D), 20.3 parts by mass of ultrafine barium sulfate, 23.0 parts by mass of medium yellow, 0.3 parts by mass of iron red, 0.5 parts by mass of fumed silica, 0.3 parts by mass of defoamer, 0.4 parts by mass of leveling agent, 0.4 parts by mass of dispersant, 0.5 parts by mass of UV absorber and 9.5 parts by mass of solvent.

[0043] The preparation method of the slow-speed polyurea bottom-surface-integrated coating of this embodiment...

Embodiment 3

[0046] In this embodiment, the slow-speed polyurea bottom and surface all-in-one coating is mixed with 34.6 parts by mass of DESMODUR N3390 BA / SN curing agent (HDI trimer, Covestro Co., Ltd., Germany); the base material is composed of 21.0 parts by mass of polytianmen Particic acid ester resin (wherein 18.0 mass parts polymer A, 3.0 mass parts F420 resin), 3.0 mass parts trimethyletherified melamine formaldehyde resin (80% solid content), 18.0 mass parts cashew phenolic phenalkamine (comprising 13.9 mass parts Compound C, 4.1 parts by mass of compound D), 20.3 parts by mass of ultrafine barium sulfate, 23.0 parts by mass of medium yellow, 0.3 parts by mass of iron red, 0.5 parts by mass of fumed silica, 0.3 parts by mass of defoamer, 0.4 parts by mass of leveling agent, 0.4 parts by mass of dispersant, 0.5 parts by mass of UV absorber and 9.5 parts by mass of solvent.

[0047] The preparation method of the slow-speed polyurea bottom-surface-integrated coating of this embodimen...

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Abstract

The invention relates to a low-speed polyurea under-top integrated coating material and a preparation method therefor. The low-speed polyurea under-top integrated coating material is prepared throughmixing base stocks, a curing agent and a diluent, wherein the base stocks are prepared from polyaspartate resin, trimethyl etherified melamine-formaldehyde resin, cardanol-based phenalkamine, pigments, fillers, auxiliaries and a solvent. The invention further relates to the preparation method for the low-speed polyurea under-top integrated coating material. According to the coating material disclosed by the invention, the available period of construction is not shorter than 4h, and the surface drying time is 35 to 60 minutes; and by spray-coating the surface of a metallic or concrete substratewith the product prepared by the method, a coating film with high drying rate and excellent weather resistance and salt-mist resistance can be formed.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a slow-speed polyurea bottom-surface integration coating and a preparation method thereof. Background technique [0002] Polyaspartic acid ester is prepared by Michael addition reaction between dialkyl maleate (or dialkyl fumarate) and aliphatic diamine, which converts primary amine into secondary amine, reduces the hydrogen atom and The reactivity of the isocyanate group is greatly reduced due to the steric hindrance effect. [0003] Initially, polyaspartic ester resin was used as a reactive diluent for solvent-based polyurethane coatings. It can be mixed with hydroxyl-containing polyester and acrylate copolymers to reduce the VOC content in the coating system. In the early 1990s, two-component aliphatic polyurea products were industrialized. In the traditional polyurea technology, the gel time is from a few seconds to a few minutes; while the polyaspartate polyure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02C09D161/32C09D161/34C09D7/61C08G18/64C08G14/073
CPCC08G14/06C08G18/6438C08L2205/025C08L2205/035C09D175/02C09D7/61C08L61/32C08L61/34C08K3/36
Inventor 吴志高向科炜刘寿兵
Owner 湘江涂料科技有限公司