Appeal No. 2006-2649 Page 2
Application No. 10/336,259
have “numerous advantages, including good flow, low VOC (volatile organic compound)
content, and adjustable cure. Moreover, the present silicone composition cures to form
a silicone adhesive having good adhesion and unexpectedly superior electrical
conductivity as evidenced by low contact resistance and/or volume resistivity.” Page 3.
“The silicone composition . . . is useful for preparing an electrically conductive silicone
adhesive. . . . In particular, the silicone adhesive is useful for bonding electronic
components to flexible or rigid substrates.” Id.
Discussion
1. Claims
Claims 1-17 are pending and on appeal. The claims stand or fall together. See
the Appeal Brief, page 3. We will consider claim 1 to be representative. Claim 1 reads
as follows:
1. A curable silicone composition for preparing a silicone adhesive, the
composition prepared by mixing:
(A) an organopolysiloxane containing an average of at least two
silicon-bonded hydroxy groups per molecule;
(B) a crosslinking agent in an amount sufficient to cure the
composition; wherein the agent is selected from (i) at least one silane
having the formula R2nSiX4-n wherein each R2 is independently selected
from monovalent hydrocarbon and monovalent halogenated hydrocarbon
groups having from 1 to about 8 carbon atoms, n is 0 or 1, and X is -OR2
or –OCH2CH2OR2; (ii) a partial hydrolyzate of (i), and (iii) mixtures
comprising (i) and (ii);
(C) an electrically conductive filler in an amount sufficient to impart
electrical conductivity to the silicone adhesive, wherein the filler comprises
particles having at least an outer surface of a metal selected from the
group consisting of silver, gold, platinum, palladium, and alloys thereof;
(D) an effective amount of a hydroxy-functional organic compound
having a molecular weight up to about 1000 and containing at least one
hydroxy group per molecule, provided the compound does not
substantially inhibit cure of the composition; and
(E) a catalytic amount of a condensation catalyst comprising a metal
salt of a carboxylic acid.
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007