A building material composite that includes a building substrate at least partially lined with a urethane material. The urethane material of the present invention is typically the reaction product of an A-side that includes an isocyanate and a B-side that typically includes: a blown vegetable oil, a...http://www.google.es/patents/US20050131092?utm_source=gb-gplus-sharePatente US20050131092 - Vegetable oil-based coating and method for application
Vegetable oil-based coating and method for application
