摘要:
The invention describes a process and a facility for recycling a solid product containing a fraction soluble in a high boiling point hydrocarbon (HBPH), for example, tires and plastic materials, which comprises contacting said solid product with an HBPH under conditions which allow solubilizing the fraction of said product soluble in said HBPH and generating a heavy liquid phase, a gaseous phase and, optionally, a solid phase; removing said phases; and separating the fraction of condensable gases from the fraction of non-condensable gases.
摘要:
Reclaimed rubber for reuse in tires or for asphalt, etc. and obtained by devulcanization treatment of vulcanized rubber from discard tires, etc. has a proportion of sol to gel of 10-80%, a weight-average molecular weight (Mw) of the sol by gel permeation chromatography (GPC) of 20,000-300,000, and a degree of swelling of the gel of 3.0-20.0. A process for reclaiming the vulcanized rubber is also disclosed.
摘要:
Reclaimed rubber for reuse in tires or for asphalt, etc. and obtained by devulcanization treatment of vulcanized rubber from discard tires, etc. has a proportion of sol to gel of 10-80%, a weight-average molecular weight (Mw) of the sol by gel permeation chromatography (GPC) of 20,000-300,000, and a degree of swelling of the gel of 3.0-20.0. A process for reclaiming the vulcanized rubber is also disclosed.
摘要:
Provided are a composition for swelling pretreatment of a cured thermosetting resin material before decomposition, including a surfactant and an acidic material, and a method for swelling pretreatment of a cured thermosetting resin material before decomposition by using the same. When carrying out swelling pretreatment of a cured thermosetting resin material before decomposition by using the composition, it is possible to accelerate infiltration of the acidic material into the cured thermosetting resin material and swelling of the cured thermosetting resin material by virtue of the surfactant, and thus to increase the decomposition reactive surface area. Therefore, it is possible to increase reaction efficiency during the subsequent decomposition process, and to increase the decomposition ratio during the same period of time.
摘要:
A method of depolymerizing formulated rubbers and polymer solids is described. The method utilizes a solvent at or above the solvent's critical pressure and critical temperature with a low ratio of solvent to the solid material. The resulting depolymerized material in either substantially solid or highly viscous liquid form can be repolymerized with the addition of more monomer.
摘要:
The invention relates to a method for recycling thermosetting materials in order to produce starting materials. According to said method, a material is processed with a partially hydrogenated aromatic hydrocarbon, at a temperature between 200 and 350 °C in the presence of an amine. In the case of epoxy resins, use of the amine is not required if processing is carried out at a temperature between 300 and 350 °C.
摘要:
The invention relates to a process for converting an elastomer from scrap to a regenerated elastomer which comprises the steps of: a) introducing the elastomer from scrap into a vessel equipped with agitating means, the elastomer from scrap being in a powder form; b) agitating and heating the elastomer from scrap, limiting the heating of the elastomer from scrap to a temperature below the temperature where the elastomer begins to degrade; c) introducing an oil into the vessel and admixing together the elastomer from scrap and the oil; and d) cooling down the so formed regenerated elastomer, whereby the regenerated elastomer has properties similar to a corresponding virgin elastomer. A regenerated elastomer and its use are also disclosed.
摘要:
A method of re-using rubber comprising providing a batch of vulcanised rubber for re-cycling and de-vulcanising or de-polymerising the batch of rubber by heating to a temperature of from 220°C to 350°C in the presence of a hydrocarbon.