- Recent advances in coalescing solvents for waterborne
coatings.
Until recent times, most paints were solvent-based. Since many polymers were produced in solution, it was natural that the coatings system derived from these polymers would use the solvent of reaction as the diluent for the polymer. These were almost invariably organic species. The use of organic solvents in paint ......
- Stacking up the challenges: solutions to wet and
sticky problems: one of the biggest challenges formulators face is to
provide coating solutions in wet and dirty environments. Coatings can be
made to...
In global terms, around two million tonnes of polymer are produced annually via emulsion polymerisation or other heterogeneous polymerisation processes. The end product of emulsion polymerisation is a dispersion of particles in water, otherwise known as a latex. Surfactants play a crucial role in all aspects of the production and ......
- A new breed of acrylic dispersions: a new breed of
dispersions for industrial furniture coatings with polymer bound
stabilizers.
Acrylic dispersions consisting of particles with a controlled morphology and a self-crosslinking mechanism are the current state-of-the art binders for VOC-compliant industrial coatings for wood, metal and plastics. The process of emulsion polymerisation is used in producing these acrylic dispersions. In the emulsion polymerisation process monomer is polymerised in an ......
- Waterborne polymers for water repellent wood
coatings.
Waterborne polymer emulsions composed of vinyl acetate-ethylene (VAE), ethylene-vinyl chloride (EVCl), and other vinyl acetate copolymers were evaluated as polymer systems in water repellent coatings for exterior wood applications. Data presented indicates that these polymer emulsions exhibit an excellent balance of performance properties, making them the polymer of choice in ......
- Functional latex and thermoset latex
films.
We review advances in the design and development of functional latex particles that can be used to form crosslinked coatings. Our emphasis is on understanding fundamental principles, of the formation and aging of latex films, of crosslinking of polymer films, of the reaction mechanisms that lead to bond formation, and ......
- Titania pigment particles dispersion in water-based paint films.
The distribution of titania pigment in dry water-based paint films in the presence of polymeric dispersants containing different functional groups was investigated. The polymeric dispersants chosen were polyacrylic acid and polyacrylamide homo- and copolymers modified with hydroxyl and/or carboxylate groups. Atomic force microscopy (AFM) and transmission electron microscopy (TEM) were ......
- How to speed up the UV curing of water-based acrylic
coatings.
Water-based polyurethane-acrylate (PUA) coatings have been cured, after drying, by a short exposure to UV radiation in the presence of a radical-type photoinitiator. The light induced polymerization has been followed quantitatively by means of real-time infrared spectroscopy, by monitoring continuously the disappearance of the acrylate double bonds. The UV curing ......