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Primid in powder coating usually refers to HAA curing agents, which are widely used in polyester powder coating systems. Its main role is to help the coating cure properly during baking, forming a strong and stable surface layer. Without a curing agent like Primid, the powder coating cannot fully develop its durability or performance.

Triglycidyl isocyanurate, often shortened to TGIC, is mainly used as a curing agent in thermosetting powder coating systems. Its role is not simply to be an additive. It is one of the key components that helps the coating form a durable crosslinked film after baking. When TGIC reacts with suitable polyester resins or carboxyl-containing acrylic systems, it helps create a coating surface with strong weather resistance, heat resistance, adhesion, and long-term outdoor durability.

​Polyester resin can yellow, but the real answer depends on the resin type, curing conditions, exposure environment, and the full formulation around it. In practical coating work, yellowing is not always caused by the polyester backbone alone.

​Yes, polyester resin can sometimes be used over epoxy, but only when the surface condition, cure state, and application goal are properly controlled. The short answer is that compatibility is possible, but it is not automatic.

​In powder coating formulation, the curing system determines how the coating film finally performs after baking. Among the curing agents used in thermosetting powder coatings, TGIC is one of the most widely discussed materials, especially in outdoor polyester systems.

​A durable thermosetting system is never created by resin choice alone. In powder coatings and related thermosetting formulations, long-term performance comes from the interaction of resin backbone, curing chemistry, additive balance, pigment dispersion, and processing conditions.

​In powder coating production, coating defects are rarely caused by a single factor. Issues such as pinholes, craters, orange peel, poor leveling, gloss inconsistency, and scratch sensitivity often appear when the balance between resin systems, curing agents, fillers, and additives is not optimized.

​An indoor physical matting agent is a functional coating additive designed to reduce gloss and control surface appearance through a purely physical mechanism. Instead of reacting chemically with the resin system, it creates micro-scale surface texture and light-scattering structures in the cured film, producing a consistent matte or low-sheen finish.

​Yes. In most thermoset coating systems, a curing agent directly promotes crosslinking by reacting with functional groups on the base resin and forming a three-dimensional polymer network.

​In coatings and surface treatment products, additives are small-dosage functional ingredients that help a formula wet the surface, disperse pigments, control foam, improve leveling, and deliver stable performance during application and curing.

​Additives are functional ingredients added in small dosages to fine-tune how a coating, ink, adhesive, or sealant performs during production, application, and service life. Unlike binders, pigments, and fillers that make up the bulk of a formula, additives act as performance controllers.

​Titanium dioxide TiO2 is one of the most widely used white pigments and functional fillers in coatings, plastics, sealants, and construction materials. It delivers high opacity, brightness, and color stability, making it essential in architectural and industrial formulations.