IMPROVEMENTS RELATING TO THE PRODUCTION OF GRAFT COPOLYMERS
A process is given for preparing a graft copolymer of a normally solid synthetic linear polyamide. The process consists of contacting the polyamide with a fiuid comprising the modifier of the formula CX/sub 2/ = CX/sub 2/ wherein X is hydrogen, an organic radical, or an inorganic atom or radical with the other X being other than hydrogen. The contact takes place in the absence of any polymerization catalyst at a temperature of at least 25 deg C but below the melting temperature of the polyamide and for a time sufficient for a grafting to take place. The grafting is effected by heating or, in some cases, by extended contact time at room temperature. When grafting takes place, the double bond of the modifier breaks and the modifier adds to the polyamide chain as a side group. The polyamide may be poly(hexamethylene adipamide) or polycaproamide. The modifiers may be styrene, 2,5-dichlorostyrene, vinylidene chloride, or the methyl ether of dodeca-ethylene glycol alphamethacrylate. (N.W.R.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-023438
- OSTI ID:
- 4034383
- Report Number(s):
- GB 872515
- Country of Publication:
- United Kingdom
- Language:
- English
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