IMPROVEMENTS IN AND RELATING TO CHLORINATED POLYMERS
A process is presented for manufacturing rigid or semirigid compositions based on polyvinyl chloride. The process comprises blending a mixture of polyvinyl chloride and a non-volatile polymerizable unsaturated monomer having a plasticizing effect on the polymer, molding the mixture, and irradiating the shaped product to convert the monomer into a polymeric form with a reduced plasticizing effect. In this way, the mobility of polyvinyl chloride at the molding temperature can be increased without increasing its softness at normal temperatures, and a monomer may be selected which has a protective effect against radiation discoloration and a cross-linking effect in addition to the plasticizing effect. Monomers and radiations suitable for use in the process are given, and various industrial applications of the process are suggested. Strength and solubility data are reported for several polyvinyl chloride compositions made using diallyl phthalate, diallyl sebacate, nonyl methacrylate, ethylene dimethacrylate, triallyl cyanurate, etc., as additives. (D. L. C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-018110
- OSTI ID:
- 4017435
- Report Number(s):
- GB 865378
- Country of Publication:
- United Kingdom
- Language:
- English
Similar Records
CROSSLINKED POLYMERIC COMPOSITIONS
Effect of polyester plasticizers on the radiation crosslinking of compositions of poly(vinyl chloride) and triallyl esters of cyanuric acid