Aqueous primer used for bicycles
A water-based, bicycle technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of not being suitable for bicycle coating process requirements, difficult to meet anti-corrosion and anti-rust requirements, and corrosion resistance can not meet anti-corrosion requirements, etc. Achieve the effect of improving boiling water resistance, improving anti-corrosion effect, and ensuring the performance of paint film
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0015] Embodiment 1 prepares waterborne epoxy acrylic resin
[0016] The water-based epoxy acrylic resin is made of epoxy resin with an epoxy equivalent of 500-1500g / mol, which accounts for 10-40% of the total weight of the resin, and is heated and dissolved with a solvent and partially aminated, and then mixed with acrylic acid, hydroxypropyl acrylate, Acrylic resin with an acid value of 50-200mgKOH / g, which is formed by free radical polymerization of butyl acrylate and styrene monomer, is prepared by heating together for catalytic esterification reaction. The specific operation is as follows:
[0017] ① Preparation of acrylic resin
[0018] Add 244 parts by weight of ethylene glycol butyl ether and 90 parts by weight of propylene glycol methyl ether into a 1000ml four-neck flask equipped with a thermometer, a stirring device and a condensation device, start stirring and heat up to a reaction temperature of 115°C, and 92.7 parts by weight of acrylic acid hydroxyl Propyl este...
Embodiment 2
[0021] Embodiment 2 prepares water-based closed type polyurethane curing agent resin A and B
[0022] (1) The specific formula is shown in Table 1.
[0023] Table 1
[0024]
[0025] Note: N75 is 1,6-hexamethylene diisocyanate biuret produced by Bayer; N3390 is 1,6-hexamethylene diisocyanate trimer produced by Bayer.
[0026] (2) specific preparation method
[0027] According to the formula in Table 1, add polyisocyanate and co-solvent to the reaction vessel and adjust the temperature to 50°C, then add the blocking agent 3,5-dimethylpyrazole, keep the reaction for 2 hours, then raise the temperature to 60-80°C, Add the hydrophilic component dimethylolpropionic acid, keep it warm for 4 hours, then cool down to 50°C, add neutralizing agent dimethylolamine to neutralize, then dilute with deionized water to a solid content of 40% by weight, filter, Packaging respectively made water-based blocked polyurethane curing agent resins A and B, wherein the isocyanate group content o...
Embodiment 3
[0028] Embodiment 3 prepares bicycle water-based primer
[0029] (1) The formula water-based primer for bicycles is composed of the following components, in percentage by weight, and the dosage of each component is as follows:
[0030] Water-based epoxy acrylic resin 25-45, curing agent resin 2-10, neutralizer dimethylethanolamine 1-3, composite anti-rust pigment 2-10, coloring pigment and filler 5-20, defoamer 0.1-0.5, Leveling agent 0.1-0.5, deionized water 20-40, the sum of the contents of each component is 100%, the specific formula is shown in Table 2.
[0031] Table 2
[0032]
[0033]
[0034] Note: R717 is an amino resin product of INEOS;
[0035] BYK025 is a defoamer product of BYK Chemicals;
[0036] BYK331 is the leveling agent product of BYK Chemical Company;
[0037] Titanium dioxide 902 is DuPont's rutile titanium dioxide product;
[0038] PU carbon black is a carbon black product of Degussa;
[0039] ZMP is a modified zinc phosphate anti-rust pigment...
PUM
Property | Measurement | Unit |
---|---|---|
acid value | aaaaa | aaaaa |
acid value | aaaaa | aaaaa |
adhesivity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com