Appeal No. 95-2270
Application 08/005,856
are linear, high viscosity organopolysiloxane fluids having
a viscosity between about 50,000 and 3,000,000 centipoise
and containing terminal silicon-bonded hydroxyl groups used
for co-reacting with the above described MQ resins.
These silicone pressure-sensitive adhesives are blended
and cured by reacting the resins with the fluids in a
condensation reactor. Typically, for each part by weight of
resin, there is added from 0.5 to 6 parts by weight fluid.
21. The specification describes suitable "silicone
cross-linking agents" as including (col. 2, lines 61-65):
the organic peroxides and alkoxy silanes. The use of either
cross-linking agent will increase the cross-link density of
the silicone adhesive and as seen *** [in Example 4], the
shear strength of the adhesive composite.
22. Suitable peroxide cross-linking agents are said to
include (col. 2, line 66 et seq.):
diaroyl peroxides, such as dibenzoyl peroxide,
di-p-chlorobenzoyl peroxide, and bis-2,4-dichlorobenzoyl
peroxide; dialkyl peroxides such as di-t-butyl peroxide and
2,5-dimethyl-2,5-di-(t-butylperoxy)-hexane; diaralkyl
peroxides such as dicumyl peroxide; alkyl aralkyl peroxides
such as t-butyl cumyl peroxide, and 1,4-bis(t-
butylperoxyisopropyl)-benzene; alkyl aroyl and alkyl acyl
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