Solvent Based Paint Components
Paint and Coatings Additives
Wetting & Dispersing Additives
Other (e.g. antistatic & degassing agents)
Rheological modifiers, Anti-Settling
pH control
Freeze-thaw control
Moisture scavengers
Gel control
Other (e.g. chelating agents, preservatives, biocides)
Rheological modifiers
Foam Control
Surface-active modifiers to overcome film defects (craters, fish eyes.,…)
Other (e.g. Levelling agents, color float)
Catalysts and photo inhibitors
Driers
Coalescents for latex coatings
Other (e.g., reactive diluents)
Adhesion promoters
Biocides
Stabilizers (heat, UV)
Plasticizers
Other (impart damage resistance, optical brighteners, flame retardants, …)
Chemical Resistance
Package Stability
Application
Film Formation
Coating Functionality
Additives
Small amount but big responsibility.
“Additives: small in quantity, decisive in performance.”
“They don’t build the coating, they fine-tune its behavior.”
Invisible role, visible results.
A RANGE OF
DISPERSING AGENTS
Designed for various
PIGMENTS
Pigments
- Pigment color is based on its chemistry and crystal structure
- Pigment color strength and dispersion rheology depends on its particle size and shape
- The quality of pigment dispersion affects the color strength, shade, hiding power and transparency
- Pigments surface may be acidic, basic or neutral
Chemistry
Pigment chemistries
Need for Dispersion
The coffee analogy
Why Dispersants should be used
During the grinding process, mechanical forces break down agglomerates into their primary particles, consuming energy in the process.
Theory
Three steps: Wetting Breakdown Stabilization
Theory
Stabilization mechanisms
Chemistry
Limitations
of conventional free radical polymerization
Chemistry
Block
Benefits of CFRP technology
Chemistry
Benefits
of CFRP technology
Secondary Coating Properties
Effect
on dry film properties
