| 摘要 |
1426650 Laminates HOECHST AG 19 Feb 1973 [22 Feb 1972] 7940/73 Heading B5N [Also in Division C3] Laminated glass is prepared using a stabilized polyvinyl butyral composition which comprises from 0À6 to 4À5% by weight, calculated on the weight of polyvinyl butyral, of an additive which comprises from 5 to 50% by weight, based on the total weight of additive, of at least one phenolic stabilizer and from 50 to 95% by weight based on the total weight of additive, of at least one phosphorous acid triester, the additive being soluble in the stabilized polyvinyl butyral at a temperature within the range of from -50‹ C. to 50‹ C., and non-volatile at a temperature of about 140‹ C. In Example 7 a laminated glass is prepared by pressing a sheet of a composition comprising polyvinyl butyral, triethylene-glycol-bis-(2-ethyl butyrate), 2,6- di-tert.-butyl-p-cresol and trilauryl phosphite between two glass plates. |
