Stoving Paints
The coatings which are dried through the heat of a furnace are called stoving
paints. Such coatings are usually applied in the form of single-layer systems
which have not only protective, but also have decorative feature. Such paints
are used in different industries such as automotive industries , metal
industries, home appliances, kitchen cabinets, washing machines, refrigerators,
office tools, coolers, water heaters, aluminum industries, etc. These paints
have a good resistance against water, detergent materials, ordinary chemical
materials, etc.
There are several categories based on the type of base paint used in the
production of stoving paint. Some of the common categories are as follows:
Alkyd base paints which are mixed with amino resins are based on non-dryable
oils such s coconut or castor oils or based on semi-dryable oils such as soybean
oils and are used in the form of short oil or medium oil. Amino resin acts as a
mediator and causes the paint to become strong, chemical-resistant and durable.
Melamine formaldehyde and urea formaldehyde are among those amino resins used in
paints.
stoving paints produced by alkyd melamine can tolerate the temperatures over
ºC190 while alkyd urea paints should not be more thanºC130. Alkyd melamine has a
very high chemical resistance and external durability. However, the film
obtained from alkyd melamine is dry and brittle and has a weaker adhesion as
compared to alkyd urea. In manufacturing formulation of alkyd amine paints, urea
and melamine resin are usually used to obtain film with the necessary
properties. |