POLYURETHANE PULTRUSION FORMULATIONS FOR THE PRODUCTION OF ARTICLES WITH IMPROVED COATING ADHESION AND ARTICLES PRODUCED THEREFROM

摘要

Polyurethane composites to which paint will adhere without the need for an aggressive pretreatment are produced by a pultrusion process using a polyurethane-forming system that includes a polyisocyanate component containing at least one polyisocyanate and an isocyanate-reactive component containing at least one cashew oil-based polyether polyol.

主权项

1. A polyurethane-forming system for the production of a fiber reinforced composite to which a coating may be applied with minimal pretreatment comprising:
a) a polyisocyanate component containing at least one polyisocyanate, and b) an isocyanate-reactive component containing at least one cashew oil-based polyether polyol wherein the cashew oil-based polyol is present in an amount of at least 20% by weight, based on total weight of the isocyanate-reactive componentwherein a coated the fiber reinforced composite produced from this polyurethane-forming system is characterized by excellent adhesion.