摘要:
Methods and systems for coating metal substrates are provided. The methods and systems include application of TGIC-based powder coatings that demonstrate superdurability without compromising flexibility.
摘要:
A polyester powder coating composition having as the essential elements: a) from 85 to 96 wt% of a polyester resin formed by reacting an aliphatic glycol and one or more dicarboxylic acids, wherein the aliphatic glycol is 5 to 90 % on a molar basis 1,3-propanediol; f) from 4 to 15 wt% of a triglycidyl isocyanurate crosslinking agent; and g) optionally conventional catalysts, auxiliary agents, and additives.
摘要:
A resin composition for powder coating, which comprises the following components (A), (B) and (C): (A) a carboxyl group-containing resin having a number average molecular weight of from 1,000 to 20,000, an acid value of from 5 to 200 and a glass transition temperature of from 30 to 120 DEG C; (B) tris( beta -methylglycidyl) isocyanurate of formula (1); and (C) as a ring opening polymerization inhibitor, at least one compound selected from the group consisting of amines having in their molecules a bond of formula (2); and onium salts.
摘要:
The present invention is directed to a carbamate-functional polymer that is used to promote the acid etch resistance and recoat adhesion of coating compositions. The polymer is the reaction product of a first compound having a hydroxyl group and a carbamate group, and a carboxylic acid anhydride that is reactive with the hydroxyl group of the first compound. The first compound and the carboxylic acid anhydride form an intermediate compound having a carboxylic acid group and the carbamate group. A second compound has an epoxy group that is reactive with the carboxylic acid group of the intermediate compound for preparing the carbamate-functional polymer. The present invention is also directed to a curable coating composition including the polymer and a method of preparing the polymer.
摘要:
Powder coatings compositions are disclosed in which the powder particles are comprised of a combination of a thermosetting polymeric resin, a cross-linking agent and a thermoplastic resin. The disclosed powder coating compositions can be applied to a substrate by such conventional methods as electrostatic fluidized bed, hot flocking, electrostatic spray, and electrostatic magnetic brush tribocharging processes, followed by curing in an oven, or by a thermal spray (PTS) method that does not require thermal post-curing.
摘要:
A polyester powder coating composition having as the essential elements: a) from 85 to 96 wt% of a polyester resin formed by reacting an aliphatic glycol and one or more dicarboxylic acids, wherein the aliphatic glycol is 5 to 90 % on a molar basis 1,3-propanediol; f) from 4 to 15 wt% of a triglycidyl isocyanurate crosslinking agent; and g) optionally conventional catalysts, auxiliary agents, and additives.