Appeal No. 1998-1768
Application No. 08/403,826
1. Aqueous, spray-resistant foam (S) produced by
mechanical foaming of a corresponding aqueous composition (W),
wherein the aqueous phase comprises
(A) a curable polymer system, which consists of 30 to
100% by weight of (U) an ionomeric polyurethane
containing polyether and/or polyesterether chains or
a mixture of said ionomeric polyurethanes
and optionally
(P) one or more further polymers curable at least
together with (U),
and (B) at least one foam-stabilizer
and the liter-weight of (S) at 20EC and normal
pressure is in the range of 400 to 700 g.
In the rejection of the appealed claims, the examiner
relies upon the following references:
Bocks et al. (Bocks) 4,029,534 Jun. 14, 1977
Reischl et al. (Reischl) 4,184,990 Jan. 22, 1980
Orr et al. (Orr) 4,690,953 Sep. 1, 1987
Appellants' claimed invention is directed to an aqueous,
spray-resistant foam wherein the aqueous phase comprises an
ionomeric polyurethane containing polyether and/or
polyesterether chains and a foam-stabilizer. According to
page 1 of the present specification, the foam of the present
invention "can be applied in the form of foam even with
conventional spray-apparatuses (in particular spray-guns) and
-3-
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007