Functional Additives
Precision-engineered performance additives — wetting agents, defoamers, dispersants, coalescents, and crosslinkers — formulated for compatibility with JCT emulsion systems and industry-standard binders.
Product Overview
Functional additives are the hidden workhorses of a well-formulated coating, adhesive, or construction product. Even at low addition rates (0.1–3%), the right additive dramatically improves substrate wetting, foam control, pigment dispersion, film coalescence, crosslink density, and rheology control. JCT offers a curated range of additives specifically selected for compatibility with our emulsion resin portfolio and common third-party binders.
Additive Categories & Grades
| Grade | Category | Active Content (%) | Ionic Character | Dosage (% on formula) | Primary Function |
|---|---|---|---|---|---|
| JCT-WD100 Best Seller | Wetting & Dispersing | 100 | Anionic | 0.3–1.0 | Pigment wetting, grind aid, colour development |
| JCT-WD110 | Wetting & Dispersing | 100 | Non-ionic | 0.2–0.8 | Substrate wetting on low-energy surfaces |
| JCT-DF200 | Defoamer / Antifoam | 100 | Non-ionic | 0.05–0.3 | In-can foam knockdown, air release |
| JCT-DF210 | Defoamer / Antifoam | 90 | Non-ionic | 0.05–0.2 | Post-application foam control, mineral oil-free |
| JCT-CL300 Crosslinker | Crosslinker | 50 | Cationic | 0.5–2.0 | Ambient crosslinking for self-crosslinking acrylics |
| JCT-CS400 | Coalescent | 100 | Non-ionic | 1.0–3.0 | Film formation below MFT, low-odour |
| JCT-SM500 | Surface Modifier | 100 | Non-ionic | 0.1–0.5 | Gloss, slip, anti-blocking on coatings |
| JCT-RT100 Rheology | Rheology Modifier (HASE) | 30 | Anionic | 0.2–1.0 | KU viscosity build, shear-thinning flow for emulsion paints |
| JCT-RT200 | Rheology Modifier (HEUR) | 20 | Non-ionic | 0.2–0.8 | Associative thickening, levelling and gloss retention |
| JCT-RT300 | Rheology Modifier (HEC) | 100 | Non-ionic | 0.1–0.5 | Structured rheology for cement-based and high-build systems |
Key Performance Properties
Recommended Applications
Formulation Guidance
Defoamer Selection
JCT-DF200 is recommended for in-can foam generated during manufacturing and filling. JCT-DF210 (mineral oil-free) is preferred when transparency or low pigment flocculation risk is critical, such as in clear coatings or light-coloured topcoats.
Wetting Agent Pairing
JCT-WD100 (anionic) pairs well with JCT acrylic emulsions and standard titanium dioxide slurries. For hydrophobic pigments (carbon black, organic pigments) or coatings on oily metal substrates, combine with JCT-WD110 at a 1:1 ratio for optimum wetting and adhesion.
Crosslinker Addition
Add JCT-CL300 as the final component, under slow stirring. Avoid prolonged mixing at elevated temperatures. Pot life after crosslinker addition is typically 6–24 hours depending on resin type and pH.
Rheology Modifier Selection
JCT-RT100 (HASE) delivers high KU viscosity build with shear-thinning flow, ideal for interior and exterior emulsion paints. JCT-RT200 (HEUR associative) is recommended for gloss and semi-gloss systems where levelling and film appearance are critical. JCT-RT300 (HEC powder) provides structured, sag-resistant rheology for cement-based tile adhesives and high-build textured coatings. See the full Thickeners & Rheology Modifiers range for viscosity profiles by grade.
Ready to Optimise Your Formulation?
Our application chemists can recommend the right additive combination for your specific system — free samples and full TDS included.