High temperature-resistant moulded masses for brake linings
Реферат: 1354995 Brake linings SEMPERIT AG 14 Aug 1972 [12 Aug 1971] 37753/72 Addition to 1267859 Heading C3P Brake linings comprising fillers bound with a binder comprising carbonized nitrile rubber and an additional binder comprising a phenolic resin, also contain water-glass. In Example 1, a pre-mixture of carbonized nitrile rubber, melamine resin, copper grit, sodium nitrite and asbestos is mixed with phenolic resin and waterglass, and the resulting mixture is preformed while damp, then dried and heated under pressure to form brake linings. In Example 2, the same pre-mixture is mixed with phenol, then with water-glass and finally with paraformaldehyde, the final mixture being treated as in Example 1.
Process for the production of high temperature resistant brake linings
Номер патента: AT305645B. Автор: . Владелец: Semperit Ag. Дата публикации: 1973-03-12.