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Application filed by Neftoprerabotvatelen Z L TadzhfiledCriticalNeftoprerabotvatelen Z L Tadzh
Priority to BG8866989ApriorityCriticalpatent/BG48394A1/en
Publication of BG48394A1publicationCriticalpatent/BG48394A1/en
The obtained bitumen can be used for the production of hydro-insulation sheets and coating in construction. It offers improved plastic and elastic properties and is produced under mild technological conditions. The composition includes 50 - 85 % tar and additives: 15 - 50 % average boiler oil, and/or 15 - 30 % average viscosity extract, and or 15 - 45 % fuel oil of kinematic viscosity at 50 degrees C 30 mm<2>/s, or a mixture of these additives at a ratio of 1:1:1. According to the method, the products are fed into an oxidizer at a temperature of 200-220 degrees C, they are heated to 240-250 degrees C, and then they are flushed with air in a quantity of 5 - 25 l/kg/h.
BG8866989A1989-06-011989-06-01Composition and method for preparing of plastic bitumen
BG48394A1
(en)
Heat insulation material for pipes made from water expanded heat insulation material of suitable foam formulations using polyols to improve the softening temperature.