Appeal No. 1997-0334
Application 08/211,698
THE INVENTION
The appealed invention is directed to a process for
producing a urethane coating on a substrate. The process
comprises emulsifying the ingredients which make up the
urethane in water, applying the emulsified ingredients to the
substrate and reacting (curing) the emulsified ingredients to
form the urethane coating.
Claim 4 is believed to be adequately representative of
the appealed subject matter and is reproduced below for a more
facile understanding of the appealed subject matter.
Claim 4. A process for the production of a polyurethane
coating which comprises
A) emulsifying a polyisocyanate component b) having
a viscosity at 23EC of 50 to 10,000 mPa s and containing.
at least one organic polyisocyanate in an aqueous organic
solution or dispersion of a relatively high molecular
weight polyol component a) containing a mixture of
a1) a water-dilutable, hydroxyfunctional
polycondensation resin free from urethane and sulfonate
groups and having a molecular weight Mn above 500 with
a2) a positive amount to 100%
by weight, based on the weight of component a1), of at
least one water-dilutable, hydroxyfunctional
polymerization resin having a molecular weight Mn above
500,
in which
the quantitative ratios between the individual components
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007