Appeal No. 1998-0138
Application 08/381,809
L is a donor selected from the group consisting of
amines of the formula NR” wherein each R”
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individually is hydrogen, alkyl, cycloalkyl, or
aryl; diamines; bipyridyl; phosphorus containing
ligands of the formulae PR” and Ph P-(CH ) -3 2 2 n
PPh where n is 1 or 2; nitriles; and dienes; and
2
M is hydrogen, NH , an alkali metal, or an alkaline
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earth metal;
and mixtures thereof.
16. A method of increasing the heat resistance of a silicon rubber prepared
by the addition of crosslinking of polysiloxanes containing two or more
alkenyl groups (1) with polysiloxanes containing two or more SiH
groups, (2) in the presence of a hydrosilylation catalyst, (3) said method
comprising:
adding to one or more of (1), (2) or (3) an effective, heat-
stabilizing amount of a heat-stabilizer comprising palladium or a
palladium compound, wherein said palladium or said palladium
compound exhibits substantially no hydrosil[yl]ation catalytic
activity.
In the Answer, the examiner maintains the following grounds of rejection:
1. The rejection of claims 5 and 16 under 35 U.S.C. § 112, ¶ 1, for failing to be
supported by a written description for the limitation that the palladium compound “exhibits substantially
no hydrosilylation activity.” Paper 15, p. 4.
2. The rejection of claims 5-7, 13 and 16-19 under 35 U.S.C. § 103(a) as unpatentable
over Kobayashi. Paper 15, p. 4.2
The Answer also added the following new ground of rejection:
3. The rejection of claims 6, 7 and 18 under 35 U.S.C. § 112, ¶ 1, as being broader than
the enabling disclosure. Paper 15, p. 5.
22U.S. Patent 5,106,933, granted April 21, 1992, on application 07/535,448, filed June 8, 1990.
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