Appeal No. 95-2270
Application 08/005,856
milled natural rubber, reclaimed rubber, styrene-butadiene
rubber, butyl rubber, butadiene-acrylonitrile rubber,
polyvinyl ether rubbers, polyacrylate ester rubber, styrene-
butadiene-styrene rubber, styrene-isoprene-styrene rubber,
etc.
19. Preferred organic pressure-sensitive adhesives are
(col. 2, lines 32-38):
the acrylate pressure sensitive adhesives which are normally
a copolymer of a higher alkyl acrylate such as 2-ethyl hexyl
acrylate copolymerized with a small amount of a polar
comonomer. Suitable comonomers include acrylic acid,
acrylamide, maleic anhydride, diacetone acrylamide, and long
chain alkyl acrylamides.
20. The "silicone pressure-sensitive adhesive" is said
to be "well known in the art" (col. 2, lines 43-44). According
to the specification, the silicone pressure-sensitive adhesives
(col. 2, lines 45-60):
contain a mixture of silicone resins and silicone fluids.
The silicone resins are generally referred to as MQ resins
which contain M units, represented by the formula R SiO ,
3 1/2
and Q units, represented by the formula SiO , where R is a
4/2
monovalent hydrocarbon radical. Generally, such resins
contain 1 to 2 Q units for each M unit. The silicone fluids
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Last modified: November 3, 2007