Appeal No. 2001-0851
Application No. 09/042,735
3) at least one dicarboxylic acid; with
ii) at least one NCO-terminated polyurethane
prepolymer (part B) comprising the reaction
product of:
1) at least one polyether polyol; and
2) at least one polyisocyanate;
wherein the equivalence ratio of hydroxyl
component (part A) to isocyanate component (part
B) is in a range of from about 1:0:1:2 to about
1.0:1.6; and said parts are blended together to
form a laminating adhesive having an initial
viscosity less than about 25,000 mPa.s at 25 C
[sic, 25oC] +/-5 C [sic, 5oC];
b) providing at least one first flexible substrate;
c) applying a layer of said adhesive to a surface of at
least one portion of said first substrate;
d) contacting the adhesive coated surface portion of
first substrate with at least a portion of the surface
of a second substrate; and
e) allowing the said adhesive to bond the first and
second substrate together.
The references relied upon by the examiner as evidence of
obviousness are:
Abraham et al. (Abraham) 3,915,935 Oct. 28, 1975
Gruenewaelder et al. (Gruenewaelder) 5,278,223 Jan. 11, 1994
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