| abstract |
PURPOSE: To prepare the title composition for rubber elastomer having low compression set, by compounding a vinyl chloride resin containing a specific amount of gel component, with a plasticizer and a reactive plasticizer. n CONSTITUTION: A resin composition having a compression set of ≤45%, is prepared by blending (A) 100 parts by weight of a vinyl chloride resin composed of 35W70wt% of a gel component insoluble to tetrahydrofuran, and the remaining part of a component soluble to tetrahydrofuran and having an average polymerization degree of 800W10000, pref. 900W7000, (B) 5W160 parts of a plasticizer (e.g. dibutyl phthalate), (C) 5W70wt%, based on the (B) component, of a reactive plasticizer (e.g. diallyl phthalate), and if necessary, (D) other thermoplastic resins, organic peroxides, heat stabilizers, fillers, pigments, lubricants, etc. n COPYRIGHT: (C)1980,JPO&Japio |