... range of modified phenolic resins are available: 1. CNSL: Improved NVH, flexibility 2. Epoxy: Good adhesion to metal fibres 3. Rubber ... : Improved NVH, flexibility 4. PVB: Improved NVH, flexibility 5. Alkyl phenol: Improved NVH, flexiblity 6. Chloroprene: Improved NVH, Low fadePowder resins: Grade ...