1、Preparation of excellent
Water-borne alkyd/acrylic hybrid resins with varied maleic anhydride (MA) content were synthesized from the reaction between alkyd intermediate (AK) and maleic anhydride modified acrylic prepolymer (AC) followed by neutralization of carboxyl groups with triethylamine.
2、(PDF) Synthesis of waterborne alkyd resins
Synthesis of water dispersible alkyd resins were carried out in two ways: by the reaction of direct polyesterification of glycerol, phtalic anhydride and modificated ricinoleic acid and by...
3、Review on Solvents Based Alkyd Resins and Water Borne Alkyd Resins
Literature analysis reveals that modifications of solvents based alkyd resins and water-borne alkyd resins have immensely improved their potential applications in the field of paints and coatings.
4、Progress in the preparation of waterborne alkyd
Abstract: Waterborne alkyd-acrylic hybrid resins that combine the benefits of alkyd resin’s high bio-based content，air-oxidation cross-linking and acrylic resin’s fast drying，high hardness.
Emulsifiers for waterborne alkyds
Discover Neptem™ emulsifiers for alkyds and transition seamlessly from solvent-borne to waterborne alkyd resins. For low-VOC coatings without compromising quality.
Review on Solvents Based Alkyd Resins and Water Borne Alkyd Resins
This review focused on the several modification routes that have been utilized in the synthesis of solvents and water based alkyd resins, the impacts on their coating properties and...
Cross‐linked waterborne alkyd hybrid resin coatings modified by
Waterborne alkyd resin coatings are ideal for use as corrosion protection coatings because of its high cost-effective and environmental advantages. However, their uses are restricted to general applications due to their poor acid, water, and alkali resistance.
Waterborne hybrid alkyd–acrylic dispersion: Optimization of the
VOC-free self-emulsifying hybrid alkyd–acrylic dispersions with solid content of 40%, waterborne were synthesized. The properties of the hybrid dispersion were studied using a mixture experimental design. Optimal composition meeting that fully meeting the coating exigencies has been proposed.
Progress in Synthesis and Modification of Waterborne Alkyd
Therefore, the waterborne alkyd resin is the key to synthesize waterborne alkyd resin. There are usually two methods: external emulsification and internal emulsification [6,7].
Improving the properties of alkyd polyol
Fourier transform infrared (FTIR) spectroscopy was employed to examine and characterize the alterations in key functional groups of alkyd polyol, isocyanate prepolymer, WPUCO, pure amino resin, and waterborne polyurethane-amino resin curing film.
In the manufacturing of coatings and adhesives, waterborne alkyd resins serve as critical film-forming components, and their thickening effectiveness directly impacts the performance of final products. Selecting and applying appropriate thickening methods for waterborne alkyd resins is a key step in ensuring product quality and improving production efficiency. This article explores several common thickening methods for waterborne alkyd resins and analyzes their advantages and limitations in practical applications.
1. Solvent Dilution Method
The solvent dilution method involves adding suitable solvents to dilute waterborne alkyd resins, reducing viscosity and enhancing fluidity. This approach is simple to implement but may introduce new contaminants, affecting product quality. Commonly used solvents include acetone, ethanol, and isopropanol.
Advantages: Easy operation and straightforward control.
Limitations: May cause environmental issues and compromise product integrity.
2. Physical Mixing Method
The physical mixing method relies on mechanical stirring or grinding to thoroughly blend waterborne alkyd resins with other ingredients, achieving thickening. Suitable for low-viscosity resins, this method effectively reduces energy consumption.
Advantages: Environmentally friendly, as no chemical additives are required.
Limitations: Requires significant equipment investment and skilled operators.
3. Chemical Crosslinking Method
The chemical crosslinking method uses crosslinking agents (e.g., polyvalent acids, bases, or catalysts) to initiate chemical reactions between resin molecules, forming a three-dimensional network structure that enhances thickening. This method significantly improves the resin’s temperature resistance and chemical stability.
Advantages: Markedly improves mechanical properties and durability.
Limitations: Requires precise control of reaction conditions; otherwise, resin performance may deteriorate.
4. Emulsion Thickening Method
The emulsion thickening method disperses waterborne alkyd resins in water to form an emulsion, which is later treated via heat or mechanical shear to disrupt micelles and achieve thickening. This method is ideal for high-solids-content resins.
Advantages: Enables preparation of high-solids-content resins, improving coating efficiency.
Limitations: Complex process with higher costs.
5. Gelation Technology
Gelation technology employs specialized thickeners to induce a phase change in waterborne alkyd resins under specific conditions (e.g., pH adjustment or electrolyte addition), transforming them into stable, gel-like structures. This method suits products requiring long-term storage or transportation.
Advantages: Provides extended storage stability.
Limitations: Requires precise condition control; improper execution may result in insufficient or excessive gelation.
selecting the appropriate thickening method for waterborne alkyd resins is crucial to product quality and production efficiency. When choosing a method, factors such as cost, environmental impact, and performance requirements must be holistically considered to achieve optimal economic and social benefits. With technological advancements, future innovations in efficient and eco-friendly thickening methods will likely drive further growth in the coatings and adhesives industries.
