Appeal No. 1997-0142
Application No. 08/373,721
exhaust dyeing a textile article containing polyester fibers
which have been previously treated with an aliphatic amine
which includes the step of providing the dye bath with a
harmonizing compound selected from the group consisting of
certain types of ethoxylates. This appealed subject matter is
adequately illustrated by independent claim 1 which reads as
follows:
1. In a method of exhaust dyeing a textile article
containing polyester fibers with a disperse dye, wherein the
article has been previously treated with an aliphatic amine to
reduce the tensile strength of the polyester fibers, the
improvement comprising, providing in a dye bath at least 1.0
weight percent, based on the weight of the textile article, of
a harmonizing compound selected from the group consisting of:
(a) C -C aliphatic fatty acid ethoxylates having
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from 5 to 15 ethylene oxide residues;
(b) C -C alcohol ethoxylates having from 5 to 15
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ethylene oxide residues; and
(c) C -C aliphatic amine ethoxylates having from 5
8 16
to 15 ethylene oxide residues.
The references relied upon by the examiner as evidence of
obviousness are:
Farmer 4,103,051 Jul. 25, 1978
Navratil et al. 4,655,786 Apr. 7, 1987
(Navratil)
Claims 1 through 20 stand finally rejected under the
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