摘要:
A process for dispersing finely divided solids by melamineformaldehyde resins which are modified with sulfite, amidosulfonic or sulfonic acid groups and treated to enhance their dispersion action.
摘要:
1,079,825. Removal of organic constituents and dust from hot furnace gases. SUDDEUTSCHE KALKSTICKSTOFF - WERKE A.G. March 11, 1966 [March 12, 1965], No. 10741/66. Heading BIB. Volatile organic constituents and residual dust are removed from pre-purified hot waste gases of electric smelting furnaces in a vertical cooler 1, the gases entering at 4 and flowing upwardly over narrowly divided cooling surfaces in indirect countercurrent contact with cooling medium which cools the upper zone to a temperature for condensing low boiling constituents and cools the lower zone to a temperature for condensing the high boiling constituents. Dust is deposited, with slow gas flow of 5 m/sec., on the lower zone walls and is washed away by the condensate of the more easily volatile organic compounds and removed through a heated discharge tube 7. Pure gas is withdrawn through line 6.
摘要:
A firmly adhering coating on a metal includes a baked base layer whose binder component is a linear polyester resin and a hardener for the same, and a baked surface layer essentially consisting of 10 to 40 percent of the polyester resin employed in the base layer and 60 to 90 percent polyvinylidene fluoride.