Appeal No. 2003-0808
Application No. 09/343,334
polyalphaolefin (claims 13-24), and to a method of producing a
composition comprising a highly oxidatively stable
polyalphaolefin and a diphenylamine antioxidant (claim 25).
Further details of this appealed subject matter are recited in
representative claims 1, 5, 6, 9, 10, 13, 25, and 26 reproduced
from the application below:
1. A method of producing a high oxidative
stability polyalphaolefin comprising the step of
hydrogenating polyalphaolefin to a level of
hydrogenation in which a Bromine Index of less than
200 mg Bromine per 100 gram sample of polyalphaolefin
is achieved.
5. A method according to Claim 1 further
comprising distilling the polyalphaolefin to remove
impurities before the hydrogenating step.
6. A method according to Claim 5 wherein a
Bromine Index of less than 100 mg Bromine per 100 gram
sample of polyalphaolefin is achieved.
9. A method according to Claim 5 further
comprising a preliminary hydrogenating of the
polyalphaolefin before the distilling step.
10. A method according to Claim 9 wherein a
Bromine Index of less than 100 mg Bromine per 100 gram
sample of polyalphaolefin is achieved.
13. A lubricant composition comprising a
polyalphaolefin having a Bromine Index of less than
200 mg Bromine per 100 gram sample of polyalphaolefin.
25. A method of producing a composition
comprising a highly oxidatively stable polyalphaolefin
and a diphenylamine antioxidant, comprising:
hydrogenating polyalphaolefin to a level of
hydrogenation in which an RBOT level of at least 2200
minutes is achieved; and
2
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