| 摘要 |
1,250,017. Coating. STAUFFER-WACKER SILICONE CORP. 19 Nov., 1968 [6 Dec., 1967], No. 54729/68. Heading B2E. [Also in Division C3] Primers for metal, wood, glass, ceramic or masonry substrates comprise disilahydrocarbons of the formula wherein each R<SP>1</SP> is H or a monovalent hydrocarbon, halohydrocarbon or cyanoalkyl radical, R<SP>2</SP> is a divalent hydrocarbon or halohydrocarbon radical, R<SP>a</SP> and R<SP>b</SP> are each monovalent hydrocarbon or halohydrocarbon radicals, m is 1, 2 or 3, n is 0, 1, 2 or 3, m+n is greater than 2, optionally with up to 25 wt. % of the primer of a solvent. Glass, metals and fabrics may also be coated with compositions comprising the disilahydrocarbon and a hydroxy-terminated polydiorganosiloxane. |
