Patent Number: 047643056
Section: description

In all the examples, use is made of a polymerizable mixture incorporating: an epoxy resin constituted by a bis-phenol A diglycidyl ether with an epoxy equivalent of approximately 190 diluted by neopentyl diglycidyl ether and marketed by CDF Chimie under the reference MN 201 T, a hardener constituted by the products sold under reference D6M5 by CDF Chimie and which consists of a cycloaliphatic polyamine having an amine equivalent of approximately 63 and an adduct of diaminodiphenyl methane and epoxy resin having an amine equivalent of approximately 130 and a pitch solution marketed under reference 730/30 by Desailly. EXAMPLE 1 This example illustrates the coating of solid waste constituted by metal filings and tools placed in a metal basket. 20% by volume of said waste is introduced into a 200.iota. container. 80% by volume of a mixture (40% pitch, 20% hardener and 40% resin) are then added and line the gaps left between the waste. The block obtained has a Shore D hardness of 54. EXAMPLE 2 This example illustrates the conditioning of a drainage oil constituted by an industrial lubricating oil. In this example, into a 200 liter barrel is introduced a mixture of pitch and hardener D6M5, epoxy resin MN 201 T and drainage oil in the following proportions: 10% by weight drainage oil, 30% by weight pitch, 22.5% by weight hardener, 37.5% by weight epoxy resin. The mixture is then allowed to harden at 20.degree. C. for 15 days and the Shore hardness of the block is determined and is approximately 67D. Tests performed by replacing part of the drainage oil by pitch and retaining the same resin and hardener proportions have revealed that the Shore hardness decreases with the oil content. These results are illustrated in the attached graph representing the Shore hardness as a function of the oil percentage of the oil--pitch mixture. Moreover, it has been found that on increasing the oil content of the oil--pitch mixture to above 50%, there is a decanting or settling of the oil, which does not make it possible to obtain a homogeneous block. EXAMPLE 3 This example illustrates the conditioning of waste constituted by tributyl phosphate. In this example, mixing takes place of the tributyl phosphate (TBP), pitch, hardener and epoxy resin in the following proportions: 4% by weight TBP, 36% by weight pitch, 22.5% by weight hardener, 37.5% by weight epoxy resin. After the mixing operation, hardening is allowed to take place at 20.degree. C. and the Shore hardness of the blocks obtained is measured after 15 days hardening and is approximately 52D. EXAMPLE 4 This example illustrates the conditioning of a scintillation liquid used for beta counting and constituted by 99.5% by weight solvent, mainly xylene and 0.5% by weight linked with scintillator. In this example, the scintillation liquid, pitch, hardener and epoxy resin are mixed in the following proportions: 4.8% by weight scintillation liquid, 35.2% by weight pitch, 22.5% by weight hardener, 37.5% by weight epoxy resin. As hereinbefore, the Shore hardness of the blocks obtained is measured after 15 days hardening at 20.degree. C. and exceeds 50D.