Appeal No. 2001-0851
Application No. 09/042,735
aliphatic chain and a dicarboxylic acid) with an NCO-terminated
polyurethane prepolymer (which in turn comprises the reaction
product of a polyether polyol and a polyisocyanate) wherein the
polyol and polyurethane prepolymer are blended together to form a
laminating adhesive having an initial viscosity less than about
25,000 mPa.s at 25oC+/-5oC.
The appealed subject matter also relates to a laminate, a
package, a bond assembly and an article, each of which includes
the aforenoted adhesive. Further details of this appealed
subject matter are set forth in representative independent claim
19 which reads as follows:
19. A method of laminating flexible packaging
comprising the steps of:
a) providing a laminating adhesive comprising an
isocyanate composition comprising the reaction product
of:
i) at least one polymeric polyol (part A) comprising
the condensation product of:
1) at least one alkylene diol having a hydroxyl
number in a range of from about 950 to about 1250;
and
2) at least one diol containing a pendant
aliphatic chain having a hydroxyl number in a
range of from about 950 to about 1250; and
2
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