Appeal No. 2000-0051 Page 2
Application No. 08/545,629
component organic lacquer coating agent. Claim 10, the sole
independent claim on appeal, is reproduced below.
10. A process for producing a water-dilutable binder,
having hydroxyl groups and after an addition of a liquid
organic polyisocyanate component with free NCO-groups in an
amount which corresponds to a proportion of NCO/OH of 0.8 :
1 to 3 : 1, which is ready to be used as an organic lacquer
coating agent and which after being applied to a substrate
hardens into a hard film due to crosslinking reactions,
consisting essentially of the following steps:
a) concentrating a binder which consists of a non-
water-soluble, carboxylate and sulfonate free polyester
resin and/or polyacrylate resin with a content of
hydroxyl groups of 2.5 to 8 % by weight OH and an
organic solvent to a content of solids of 80 to 90 % by
weight, the balance being the organic solvent to form a
solvent-containing polyester and/or polyacrylate resin;
b) adding to the concentrate produced in step a)
an emulsifier in an amount of 0.1 to 10 % by weight of
the solvent-containing polyester and/or polyacrylate
resin; and
c) subsequently to step b), blending water with
the solvent-containing polyester and/or polyacrylate
resin to create the water-dilutable binder as a
storage-stable emulsion, capable of blending with the
polyisocyante component with free NCO groups prior to
use.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Mallonee 2,968,575 Jan. 17, 1961
Renk 5,380,792 Jan. 10, 1995
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