Appeal No. 95-3484
Application 08/098,236
This is an appeal from the examiner’s final rejection of
claims 1, 4-8, 38-46 and 49-53, which are all of the claims
remaining in the application.
THE INVENTION
Appellants claim a copolymer of ethylene and an alpha-
olefin. The copolymer is a transparent liquid at 20E and has
an ethylene content, number average molecular weight, ratio of
weight average molecular weight to number average molecular
weight, and ratio of maximum value of the molecular weight to
minimum value of the molecular weight, which are within
recited ranges. Appellants state that the copolymer is useful
as a synthetic lubricant oil, a lubricant oil additive, and a
fuel oil additive (specification, page 1). Claim 1 is
illustrative and reads as follows:
1. A copolymer of ethylene and an alpha-olefin having a
ethylene content of from 40 to 60 mole%, a number average
molecular weight of from 300 to 8,200 and a molecular weight
distribution value Q, which is the ratio of the weight average
molecular weight to the number average molecular weight, of
not more than 3 and a Z value, which is the ratio of the
maximum value of the molecular weight to the minimum value of
the molecular weight when the molecular weight is measured by
gel permeation chromatography, of from 15 to 200 said
copolymer being a transparent liquid at 20EC.
THE REFERENCES
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Last modified: November 3, 2007