Waterborne resin, preparation method of waterborne resin, and waterborne paint
A water-based resin and resin technology, applied in the direction of coating, etc., can solve the problems of poor pigment dispersion and encapsulation, poor wood permeability, etc., and achieve the effect of improving the gloss, dispersibility and encapsulation of the coating film
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0024] The invention provides a kind of preparation method of waterborne resin, comprises the following steps:
[0025] (1) Self-crosslinking acrylic resin is provided, which contains self-crosslinking groups, the number average molecular weight of the self-crosslinking acrylic resin is 1000-10000, and the carboxyl content is more than 25 mgKOH / g;
[0026] (2) mixing the self-crosslinking acrylic resin in the step (1) with a neutralizer and water to obtain a water-based acrylic resin;
[0027] (3) The water-based acrylic resin obtained in the step (2) is mixed with an initiator and a non-hydrophilic unsaturated monomer, and the polymerization reaction obtains a core-shell structure water-based acrylic resin; the non-hydrophilic unsaturated monomer includes Acrylic acid monomers and / or styrene not containing carboxyl and amino groups; the shell layer of the core-shell structure is the self-crosslinking acrylic resin described in step (1), and the core layer of the core-shell st...
Embodiment 1
[0082] (1) First, methyl methacrylate, butyl acrylate, methacrylic acid and diacetone acrylamide (DAAM) are mixed according to the mass ratio of 75:10:10:5 to obtain a monomer mixture, add n-butanol, add Oily initiator TBPO and molecular weight regulator (alpha-methylstyrene linear dimer), the mass ratio of monomer mixture, n-butanol, initiator and molecular weight regulator is 100:25:5:3, at 120 By solution polymerization at ℃ for 180min, an acrylic resin with a carboxyl content of 65mgKOH / g and a number average molecular weight of 1000-10000 was synthesized;
[0083] Mix with triethylamine and neutralize to form a salt, add 300mL water to disperse, remove the organic solvent in vacuum at 60°C and -0.098MPa to obtain a water-based acrylic resin with a number average molecular weight of 6000, T g 80℃; solid content is 25%;
[0084] (2) Add a water-based initiator to the above-mentioned water-based acrylic resin, then add methyl methacrylate, butyl acrylate, and monomers conta...
Embodiment 2
[0088] (1) Put gelatin, water and molecular weight regulator (mercaptoethanol) into the reaction kettle, put in mixed monomers, stir at high speed for 1 hour, slowly heat up to 80°C, add oily initiator AIBN, react at 80°C for 2 hours; vacuumize Recover the unreacted monomer, centrifuge and dehydrate, and dry to obtain a solid resin;
[0089]Wherein, gelatin: water: molecular weight regulator: mixed monomer: initiator=1:56:0.2:40:3.0; mixed monomer is: methyl methacrylate: styrene: isooctyl acrylate: methacrylic acid: AAEM=60:18:10:6,T g =70°C, the molecular weight is 8000, and the acid value is 78mgKOH / g;
[0090] Add 25g of solid resin to 72g of aqueous solution containing 3.1g of N,N-dimethylethanolamine, heat it to 80°C to dissolve it completely, and the solid content is 25%;
[0091] (2) Add a water-based initiator to the above-mentioned water-based acrylic resin, then add ethyl acrylate, butyl acrylate, and monomers containing two unsaturated double bonds to polymerize ...
PUM
Property | Measurement | Unit |
---|---|---|
Acid value | aaaaa | aaaaa |
Acid value | aaaaa | aaaaa |
Molecular weight | 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