APR 49:
PVC Plastisol Adhesion Promoter
APR 49 is a blocked isocyanate adhesion promoter designed for automotive PVC plastisols used in sealants and primers over e-coated substrates.
Applications: Anti-chip primers, visible seams, low-bake plastisols, and wet-on-wet systems in automotive and commercial vehicle manufacturing.
- Used at 2–10% by weight
- Compatible with DIDP-based plastisols
- 120–140°C cure at 30 minutes
- Enhances rheology and flow
- Excellent color and wet-on-wet stability
Description
APR 49 is a blocked isocyanate resin formulated to enhance adhesion in PVC plastisol systems, especially those used in automotive sealers and anti-chip primers. It is based on a DIDP carrier and provides excellent adhesion to electro-deposition primers used in automotive and heavy vehicle manufacturing.
This product improves color stability and wet-on-wet compatibility. It also enhances plastisol rheology for smooth application. APR 49 is recommended for use at 2–10% by weight and cures at 120–140°C. It is ideal for visible seam areas and low-bake plastisol applications, delivering consistent adhesion in demanding, production-line settings.
Explore our full range of Adhesion Promoters for additional options.
Need more info? Request SDS/TDS documentation.
