Interference 103,685
Riggins’ involved application), which is said to be a divisional
of Riggins’ parent application filed March 16, 1992, which is
said to be a continuation-in-part of Riggins’ grandparent
application filed October 31, 1990, abandoned.
April 26, 1994 - Riggins et al., U.S. Patent 5,306,312,
entitled “Dye Diffusion Promoting Agents For Aramids” (hereafter
Riggins’ patent), issued from Riggins’ parent application filed
March 16, 1992, which is said to be a continuation-in-part of
Riggins’ grandparent application filed October 31, 1990.1
1
Representative Claims 30 and 64 of Riggins’ patent
read:
30. A process of dyeing poly(m-phenyleneisophthalamide)
fabric comprising:
(a) applying to a poly(m-phenyleneisophthalamide)
textile fabric a solution containing a tinctorial
amount of at least one dye and a dye-diffusion
promoting amount of an aliphatic amide having
7 to 14 carbon atoms capable of increasing the
swelling ratio of the fabric at least 1.5% and
excluding N-octyl-2-pyrrolidone and N-cyclohexyl-
2-pyrrolidone, then
(b) heating the fabric while in contact with the
solution until the desired degree of dyeing is
attained.
64. Poly(m-phenyleneisophthalamide) fibers or fabric
having from 10% to 120% by weight of an aliphatic
amide having 7 to 14 carbon atoms capable of
increasing the swelling ratio at least 1.5% and
excluding N-octyl-2-pyrrolidone and N-cyclohexyl-
2-pyrrolidone to make the fibers or fabric receptive
to dyeing, printing or flame retardant treating.
-3-
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