Appeal 2007-1024
Application 10/231,144
4) Applicant’s specification makes the following statement
regarding binder B:
Specifically as the binder B, (a) polyolefins having a side chain
whose polarity is not so high such as hydrogenated nitrile
rubber, (b) polyacrylonitrile, (c) polymers having acrylonitrile
units and -(CH2)n- portions wherein 6 ≤ n, (d) acrylic resins
having a hydroxyl group, or the like are preferably used. These
may be used alone or in combination of two or more.
(Specification 14).
5) Provided below is a table detailing the binders described in
Applicant’s specification:
Binders Described by ‘144 Specification
Binder A Binder B
1) Polyvinylidene fluoride (“PVDF”);1) Polyolefins having a side chain
2) Modified PVDF, and whose polarity is not so high such as
3) Polytetrafluoroethylene (“PTFE”).hydrogenated nitrile rubber;
2) Polyacrylonitrile;
3) Polymers having acrylonitrile
units and -(CH2)n- portions wherein
6 ≤ n;
4) Acrylic resins having a hydroxyl
group
6) Based upon specification’s description of binders A and B, we
find that binders satisfying the equation θB – θA ≥ 15o include PVDF
and/or PTFE as binder A and a binder B formed with polymers having
acrylonitrile units and -(CH2)n- portions wherein 6 ≤ n.
5
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