Appeal No. 2006-1673 Παγε 5
Application No. 09/913,725
the addition of a lubricant has various
disadvantages, such as the trouble of the processing in
extrusion or molding, or the bleeding during using.
Moreover, when used together with the above-mentioned
resins other than the polyacetal resins, the lubricant
inhibits the compatibility between these resins and the
polyacetal resins and greatly deteriorates the abrasion
resistance properties.
Takayama incorporates a modified olefinic polymer, an
alkylene glycol polymer containing a primary or secondary amino
group, and an inorganic filler and, an optional lubricant as
additional components into the polyacetal resin-containing
composition. According to Takayama, the optional lubricant
enhances desired properties of their polyacetal resin
composition, including sliding performance and molding process
capabilities. The polyacetal resin composition is disclosed as
having good friction and abrasion resistance properties useful in
automobiles and electrical and electronic appliances. See, e.g.,
the abstract, column 1, lines 8-15, column 2, lines 10-35, and
column 5, line 23 through column 5, line 41 of Takayama.
Takayama provides a list of suitable lubricants for their
composition, including ethylene-alpha-olefin oligomer.
The examiner (answer, pages 3 and 4) maintains that:
it would have been obvious to one having ordinary
skill in the art at the time the invention was made to
use the ethylene-alpha-olefin oligomer singly or in
combination with the ethylenebisstearamide disclosed in
JP’305 motivated by the desire to obtain the porous
film with improved dispersibility and processability
and thereby facilitating the preparation of the film.
This is important to the expectation of successfully
practicing the invention of JP’305 and this suggesting
the modification.
The examiner (answer, page 5) further argues that:
[t]he lubricants in Takayama are designed not only
to improve [of, sic] friction and abrasion resistance
of molded polyacetal resin compositions as argued by
Appellants but also to improve the dispersibility,
molding processabilities of the composition (abstract,
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