TOYOBO Hardlen CY-9122P Chlorinated Polypropylene CPP Resin, PP Substrate Adhesion Promoter for Automotive Bumper Coatings, Inks & Adhesives
TOYOBO Hardlen CY-9122P Chlorinated Polypropylene CPP Resin, PP Substrate Adhesion Promoter for Automotive Bumper Coatings, Inks & Adhesives
Full Name & Product Positioning
Full Product Name: TOYOBO Hardlen® CY-9122P Acid-modified Chlorinated Polyolefin (CPP) Adhesion Promoter
Low-molecular-weight maleic-anhydride-modified chlorinated polypropylene industrial resin. Developed to improve adhesion performance on polyolefin-based substrates. Can be used with corresponding coating processes. Suitable for mass-production formulas of solvent-based coatings, basecoats, inks and adhesives. Compatible with various resins. Widely applied in automotive plastics, plastic coating and packaging ink industries.
Core Technical Parameters
| Appearance | Yellow-brown uniform pellets |
| Chlorine content | 22.0±1.0 wt% |
| Viscosity of 20 wt% toluene solution (25°C) | 20-100 mPa·s |
| Gardner color (20 wt% toluene solution) | ≤6 |
| Solid content | 100 wt% |
| Solubility | Soluble in aromatic solvents such as toluene and xylene; also soluble in mixed solvents of methylcyclohexane and esters |
| Standard package | 20 kg paper-plastic composite bag; 1 kg small trial-size package available |
| CAS No. | 8442-33-1 |
Core Advantages
1. When matched with proper processes for PP, EPDM and TPO substrates, it can improve coating-film adhesion and help simplify pre-treatment procedures for plastic parts.
2. Helps improve primer-topcoat inter-layer adhesion. Compatible with polyurethane and polyester-amino baking systems, and reduces risk of coating delamination.
3. Contributes to corresponding water-resistance, moisture-resistance, gasoline-alcohol-resistance properties of formed films, applicable in formulas for automotive plastic parts.
4. Compatible with various film-forming resins including acrylic, alkyd and polyurethane. Can be blended for basecoats or used separately for primer coats.
5. Dissolved solution can show clear state and maintain relatively stable performance during coating storage.
6. Pellet form generates relatively low dust, user-friendly for feeding and suitable for automatic production lines.
Main Application Fields
Core applications: Automotive PP/EPDM bumper basecoat, TPO plastic-part primer, adhesion enhancer for polyolefin substrates
Compatible applications: Coatings for PP plastic toys, BOPP composite-ink binder, polyolefin-based adhesives, composite primer for plastic-metal substrates
Restricted scenarios: Pure water-based systems (not water-soluble by itself; emulsification modification required for water-borne use), oral-ingestion food products, main resin for long-term outdoor high-weather-resistance topcoats.