Waterborne coatings for interiors

An environment- friendly attitude is increasingly spreading, aiming at safeguarding the operators' and the end-users' health. For this reason, furniture is more and more being coated with products with the least emission of solvents, both during the painting stage and in the final slow stage of the drying, which usually occurs at home and liberates unpleasant odours. As furniture manufacturers use chipboard bases and MDF with low formaldehyde contents, painters will have to use products with minimum contents of harmful substances, so as to protect the environment.
SAYERLACK is committed to this research. HYDROPLUS is the brand of the best waterborne coatings for interiors. The appearance is critical in the coating of furniture and its accessories. The HYDROPLUS waterborne products result in finishes that cannot be differentiated from those obtained with solvent-based products, ensuring a mechanical and chemical resistance level comparable to that of polyurethane two-component topcoats. However, these results can only be reached by following some instructions that help the process to obtain the best performance of the coatings.
The naturally variable nature of wood means that it must be carefully prepared prior to coating. The use of top- quality materials will also give the best results.

Why single-component waterborne products?
Single-component waterborne coatings, even if blended with another component called Cross-linker, have no pot-life problems like the conventional polyurethane water-based or solvent-based products.
They are simple and ready to use and low-cost, as the product can be recovered and used again (even if already cross-linked), provided it is poured in its original can and carefully sealed, thus avoiding a prolonged contact with air, or immediately reused after having recovered its viscosity by diluting with water.

Why two-component waterborne products for interiors?
If you need the small but important differences given by the addition of an isocyanate curing agent (kitchens, furniture for bars and discos, table surfaces..), you can use AH 1545. This product chemically reacts as it happens with polyurethane products; however, thanks to its special composition, it is stable and mixable with waterborne products, thereby ensuring a pot-life of up to 4 hours, after which the residue material cannot be used anymore.
WARNING: not all aqueous-based products can be mixed with this product. Check the products that can be used with it contacting the Sayerlack Technical Service.
Isocyanate cured water based systems are sensitive to sudden changes in temperature during use. In order to achieve the best results with these technically advanced products, they should be used at the recommended temperatures to avoid slow drying times.

WATERBORNE COATINGS FOR INTERIORS: COMPARISON WITH SOLVENT-BASED PRODUCTS

ADVANTAGES OF WATERBORNE COATINGS

ECONOMIC
25% overspray reduction.
Overspray recovery in automatic systems.
Unlimited pot-life for single-components products.

ENVIRONMENTAL
Emissions reduced by 95%.
Non-toxic products conforming to EN 71.3 (Safety of toys).
Improvement of the workplace.

PERFORMANCE
Excellent chemical resistance.
Non-yellowing acrylic systems.

PRACTICAL
Ready-to-use products.
Application equipment can be cleaned with water.
Easy to use.
No problems of flammability and thereby of storage.

TECHNICAL PRECAUTIONS

Drying conditions must be controlled.
Final hardness is reached in a longer time.
"Dust free" time is longer.
Sensitive to freeze and fungi/ moulds.
More care is required in application.