Systems based modified polyester resin and organic peroxide for powder coating that can be applied onto heat sensitive substrates and metal.

摘要

The invention relates to systems comprising: (A) a polyester resin which is a polyester carboxylated or hydroxylated unsaturated IN YOUR CHAIN ​​AND (B) AN ORGANIC PEROXIDE WITH A MINIMUM curing temperature between 140 and 190C; The relative proportions of resin and COMMPRENDIDAS ARE ORGANIC PEROXIDE 55-60% by weight of resin, based on the composition FINAL, AND BETWEEN 0.5-3.0% BY WEIGHT OF PEROXIDE, based on the final composition. Such systems are mainly applied in the manufacture of powder coatings for coating substrates METALS, ESPECIALLY aluminum substrates, and substrates thermosensitive, such as plastics, using the systems already existing in the industry.