RADIATION POLYMERIZATION OF UNSATURATED NITROGEN COMPOUNDS
Copolymers suitable for use as additives for lubricating oils can be prepared by exposing a mixture of an unsaturated nitrogen-containing compound selected from the C/sub 4/ to C/sub 18/ alkyl acrylamides, di(C/sub 2/ to C/sub 8/ alkyl) amino methacrylates, acrylonitrile, and methacrylonitrile with an unsaturated ester to high-intensity radiation of 10/sup 4/ to 5 x 10/sup 6/ r/hr at6O to 80 deg F for a time sufficient to give a molecular weight of 5,000 to 30,000 Staudinger. The amount of the nitrogen-containing material in the mixture is preferably 0.5 to 5 wt.%. The product copolymer, when blended at approximately 1% concentration with a lubricating oil of viscosity 45 SUS at 2lO deg F, results in blends of viscosity 50 to 70 SUS at 2lO deg F. The advantages of this method over conventional copolymerization methods are outlined, and 11 examples of this method are given. (D.L.C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-006034
- OSTI ID:
- 4081304
- Report Number(s):
- GB 852831
- Country of Publication:
- United Kingdom
- Language:
- English
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