Chemical composition: special Adhesives from Acrylic Ester-Vinyl Acetate Copolymers;

 

PV99 leveling agent is the new latest leveling agent that has above effective properties that put into market by Zhihua Chemical.

Hydroxyl and hydroxyl-ester compound has been successfully introduced to Polypropylene copolymer butyl, which greatly extent the property of ester thus made the product be widely applied to powder coatings. This leveling agent can applied to epoxy powder, epoxy polyester powder, and pure polyester powder.

By physical effects, ester group of PV99 Leveling agent can reduce the chemical and physical effect from pigment aggregation, reduce the formation of pigment aggregates and presence, and reduce surface tension of pigment particle, which can help the stability of pigment dispersions to ensure that pigment particles in the powder coating’s coloring effect. Especially for dark pigments, the surface of coating can be more vivid and clear in eyes.

With introduction of active groups, the effect of ester in Acrylate Copolymerical can be fully reflected. Ester group form monolayer, which gives the coating a wonderful level and smooth surface, then by optical interaction can causing refraction, which made the coating a bright surface, just like the effect of solution coatings.

PV99 leveling agent has an obvious effect upon transport of hydrone in process of transport in molecule. It enables the water molecules produced by water molecules in pigment or produced in process of ester curing cross-linking, a rapid migration to coating surface and evaporate in short time, thus a good performance of coating forms. Especially in the hydroxyalkyl amide system, water produced in polymerization by Hydroxyalkyl amide and polyester hydroxyl in hydroxyl powder in process of powder coating’s curing period. Pinholes phenomenon may appear when the coating is above 100um, which reduce down the coating’s performance. With dosage of PV99 leveling agents, this phenomenon can greatly improved, just like the effect with dosage of TGIC series.

Technical Specification:

Appearance: White powder

Active ingredient: 66~68%

Density: 0.48~0.68%

Volatile: ≤0.15%

 Application:

1. Fine performance in leveling the surface of coating; raise the glossiness with good view of the surface.

2. The powder coating can reduce or eliminate the defect of the surface, i.e.: shrinkage, pinhole or skim; It can enhance the wetness, increase fluidity and fullness of coating surface.

3. Other leveling agents can not substitute  the film coating effect of PV99 in Primid polyester series; it also has a good performance in powder transfer

4. It can greatly reduce ester content with using active coupling agent(Zhihua Chemical)together.

 

Commended prescription

Dosage of PV99 to reduce ester content (prescription comparison of PV99 Integrated with other agents)