Appeal 2007-0511
Application 10/699,508
1 Gatto discloses organomolybdenum compositions having high
2 molybdenum content which are useful as lubricant additives. Gatto, para.
3 [0001].
4 The disclosed organomolybdenum compositions are said to improve
5 deposit control, antioxidant, antiwear, and/or friction modifying properties
6 of lubricant oils. Gatto, para. [0043].
7 The disclosed organomolybdenum additive can be employed in a
8 variety of lubricating oil base stocks, such as derived from natural
9 lubricating oils, synthetic lubricating oils, or mixtures thereof. Gatto, para.
10 [0049].
11 In one embodiment, a lubricant oil can be a formulated oil comprising
12 between about 75 to about 95 weight percent of a base oil of lubricating
13 viscosity, between 0 and 30 weight percent of a polymeric viscosity index
14 improver, between about 5 and 15 weight percent of an additional additive
15 package, and typically a sufficient amount of molybdenum complex to
16 provide at least about 50 ppm of molybdenum to the finished lubricant.
17 Gatto, para. [0051].
18 In Example 2, organomolybdenum complexed product samples 1-9
19 were evaluated as additives in a modified version of the Caterpillar Micro-
20 Oxidation Test. Each additive was added to a separate amount of SAE grade
21 15W-40 fully formulated crankcase oil. Gatto, para. [0064].
22 According to Gatto, the Micro-Oxidation Test is a commonly used
23 technique for evaluating the deposit forming tendencies of a wide variety of
24 passenger car and diesel lubricants as well as mineral and synthetic
25 basestocks. The test measures the oxidative stability and deposit forming
26 tendencies of lubricants under high temperature thin-film oxidation
11
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