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%
Volatile0.15%
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)
Raw materials | Prescription Number |
1 | 2 | 3 | 4 | 5 | 6 |
P9050(Jiarong Chemical) | 270 | 250 | | | | |
E-12（Shanfu Chemical） | 270 | 250 | | | | |
P9337（Sino-French Chemical） | | | 560 | 520 | | |
CE3099 (Tiansong Chemical） | | | | | 560 | 520 |
*F125B（Zhihua Chemical） | | | 30 | 30 | 30 | 30 |
PV88 | 10 | | 10 | | | |
PV99（Zhihua Chemical） | | 10 | | 10 | 10 | 10 |
Gloss Enhancing Agent（Zhihua Chemical） | 10 | 10 | 10 | 10 | 10 | 10 |
Benzoin | 3 | 3 | 3 | 3 | 3 | 3 |
barium sulfate | 260 | 300 | 220 | 260 |
