| 摘要 |
<p>1,125,632. Fire-resistant coatings. DOW CHEMICAL CO. 22 Feb., 1966, No. 7763/66. Headings and B2E and B2K. [Also in Divisions B5 and C3] In examples 33-59, glass cloth with a chromate finish is impregnated with an acetone solution of a halogenated epoxy resin, which resin is the reaction product of an epoxlated novolac and a dibromo-, tribromo-, tetrabromo-, tetrachloro- and pentachiorophenol or mixtures thereof with or without bisphenol A, a curing agent for the epoxy resin and optionally a non-halogenated epoxy resin and Sb 2 O 3 , by drawing the cloth through the solution and adjusting the pick up with a doctor roll. After air drying at room temperature the resin is partially cured at 120‹C. In example 60 coatings are formed from a solution of diethylenetriamine and a halogenated epoxy resin derived from an epoxylated novolalk resin, 2, 4, 6-tribromephenol, tetrabromophenol and bisphenol A, in diethylene glycol monobutyl ether, by spreading the solution on a glass plate or by dipping a glass microscope slide into the solution, and curing at 50‹C.</p> |
