In order to reduce the waste water and increase the conversion rate of products, domestic scientific research institutions and production enterprises used domestic technology for reference, improved the existing rubber accelerator M process, and achieved results. Domestic researchers have developed a similar solvent extraction process with foreign countries, but there are also problems. Environmental protection, safety and high efficiency selection of new organic solvents is the key to the purification of M by solvent method. The existing solvent extraction methods include solvent crystallization Pamay-an, Pamay-an ti panagala ti panagdistila, pamay-an ti panagala ti solido-likido, pamay-an ti panagala ti likido-likido ken dadduma pay. Nupay kasta, ti teknolohia ket saan nga umdas a perpekto..
Iti agdama, dagiti organiko a solvent ket mabalinda a pilien ti toluene, carbon disulfide, aniline, benzene ken dadduma pay..
Babaen ti panagusar ti karbon disulfido a kas solvent, ti panagtengngel ti gastos ken ti panagtengngel ti kinatalged ket dagiti nalatak a parikut. Urayno ti kalidad ket natalged ken dagiti produkto ket makasangpet kadagiti internasional a kasapulan, ti kinatalged ket kasapulan a mapasayaat gapu ti panaguram ken panagbettak ti karbon disulfido..
No ti anilina ket naus-usar a kas solvent, ti anilina ket bassit a matunaw iti danum, a mangibunga ti panagadu ti kaadu ti anilina iti solusion, a saan a makatulong iti panagpataud..
Benzene and toluene are used as solvents, the solubility of the resin is small, the purity of product M is affected, and the recovery of solvent is also considered. Moreover, benzene and toluene are flammable and explosive, the safety factor is low, and volatilization causes solvent loss in the air. Lead to the increase of production costs, but also cause harm to the atmospheric Aglawlaw. .