Claims
- 1. Random copolymers useful as a clad film or solid members such as gears, bearings, and the like, comprising the reaction products of the free radical bulk polymerization of n-octadecyl methacrylate and methyl methacrylate, said copolymers having a number average molecular weight ranging from about 7,000 to about 20,100, the mole percentage of the monomer units containing the octadecyl group in said copolymers ranging from about 7% to about 21%, the mole percentage of the monomer units in said copolymers originating from methyl methacrylate ranging from about 79% to about 93%, and said copolymers having coefficients of friction in the range between 0.35 and 0.19 when molded into disks under 3000 psi.
- 2. Random copolymers according to claim 1 wherein the mole percentage of the monomer units containing the octadecyl group in said copolymers is about 21%, and the mole percentage of the monomer units in said copolymers originating from methyl methacrylate is about 79%.
- 3. Random copolymers according to claim 1 wherein the mole percentage of the monomer units containing the octadecyl group in said copolymers is about 7%, the mole percentage of the monomer units in said copolymers originating from methyl methacrylate is about 93%.
Government Interests
The invention described herein may be manufactured, used and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.
US Referenced Citations (6)
Number |
Name |
Date |
Kind |
3194777 |
Christenson et al. |
Jul 1965 |
|
3282900 |
Chadha et al. |
Nov 1966 |
|
3856685 |
Mori et al. |
Dec 1974 |
|
3869396 |
Van de Kraats et al. |
Mar 1975 |
|
3951929 |
Sweeney |
Apr 1976 |
|
3972864 |
Gisser et al. |
Aug 1976 |
|
Non-Patent Literature Citations (2)
Entry |
Greenberg, et al., J. Am. Chem. Soc. 76, (Jan. 5, 1955), pp. 6280-6285. |
Ailhand, et al., Die Makromoleculare Chemie, 140, (No. 3494), pp. 179-200,1970). |