Claims
- 1. A lubricant composition for a video disc comprising a methyl alkyl siloxane fraction of the formula ##STR11## wherein R.sub.1 and R.sub.2 are alkyl groups of 4-20 carbon atoms, x is an integer of 2-4, y is an integer of 0-2 and wherein the sum of x+y is 4 or less, said fraction having a distillation temperature of about 100.degree.-205.degree. C. at a pressure of 10.sup.-5 torr and wherein said composition is free of antioxidant.
- 2. The lubricant composition according to claim 1 wherein y is 0 and R.sub.1 is decyl.
- 3. The lubricant composition according to claim 1 wherein y is 0 and R.sub.1 is octyl.
- 4. The lubricant composition according to claim 1 wherein y is 0 and R.sub.1 is hexyl.
- 5. The lubricant composition according to claim 1 wherein y is 0 and R.sub.1 is dodecyl.
- 6. The lubricant composition according to claim 1 wherein R.sub.1 is butyl and R.sub.2 is octyl.
- 7. The lubricant composition according to claim 1 wherein R.sub.1 and R.sub.2 are alkyl of 4-12 carbon atoms.
- 8. A method of purifying and fractionating a composition of the formula ##STR12## wherein R.sub.1 and R.sub.2 are alkyl groups of 4-20 carbon atoms and m and p are integers which comprises molecularly distilling said composition and collecting the fraction which distills at from about 100.degree.-205.degree. C.
Parent Case Info
This is a division of application Ser. No. 937,819, filed Aug. 29, 1978, now abandoned.
US Referenced Citations (3)
Divisions (1)
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Number |
Date |
Country |
Parent |
937819 |
Aug 1978 |
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