Abstract:
A CONTINUOUS PROCESS FOR THE PRODUCTION OF FOAMS FROM CURABLE SYNTHETIC RESINS IN WHICH AQUEOUS SOLUTIONS ARE FOAMED BY MEANS OF FOAMING AGENTS, THE RESULTANT FOAMS ARE MIXED WITH AQUEOUS SOLUTIONS OF RESINS IN A PRE-MIXING ZONE AND THEN IN A MAIN MIXING ZONE AND THE MIXTURES
ARE DISCHARGED FROM THE MIXING ZONE AND CURED, AS WELL AS AN APPARATUS FOR CARRYING OUT THE PROCESS.
Abstract:
A PROCESS FOR THE SIZE REDUCTION OF EXPANDED PLASTICS, COMPRISING PRELIMINARY SIZE OREDUCTION OF EXPANDED PLASTICS BLOCKS BY SHEARING ACTION BETWEEN ROLLERS ARMED WITH SHEAR BLADES AND STATIONARY BLADES AND FURTHER SIZE REDUCTION BY CONTINUED SHEARING ACTION.
Abstract:
A PROCESS FOR IMPROVING THE FLOWABILITY OF AMINOPLAST FOAMS PRIOR TO CURING, PARTICULARLY FOR COVERING SOIL, BY INCORPORATING COARSE GAS BUBBLES INTO FOAM CONTAINING FINE BUBBLES.
Abstract:
Light concrete is produced from a foamed material, pref. polystyrene, a binder and water. The polystyrene particles are pretreated with either a phenol-contg. coal-tar which contains solvents for polystyrene, or a mixt. of phenolic resins and anthracene oil.
Abstract:
To cultivate ground or waste deposits, particulate foamed urea resin in moistened with water and the moistened particles are then fed into more water, to produce a mixture of 0.5 to 5 parts by volume of water to 1 of the urea.resin. The mixture is then deposited with plant seeds or cuttings, as in DT 1279998. A cylindrical mixer with axial stirrers and an inlet with spray nozzles is provided for the mixing process.