| 摘要 |
<p>A perfluoroelastomer article is coated with a durable film comprising a polysiloxane and a urethane oligomer. An independent claim is also included for a process of forming a durable polysiloxane urethane oligomer film on a perfluoroelastomer article, comprising coating a cured perfluoroelastomer article with a dispersion comprising a polysiloxane having a pendant groups and a blocked isocyanate to form a wet-coated perfluoroelastomer article, drying the article at a temperature below which the pendant hydroxyl groups react with the blocked isocyanate to form urethane oligomer, and heating the article to a temperature and for a time where the pendant hydroxyl groups react with the blocked isocyanate to form urethane oligomer and a durable film comprising the polysiloxane and urethane oligomer on the surface of the article.</p> |
