Interference 103,685
promoting dyeing of Nomex® . . . . Impressed by its
effectiveness, I again noted the ability of N,N-diethyl
benzamide for promoting dyeing of Nomex® on page 31 of
Notebook 1664.
26. On February 26 or 27, 1990, I submitted a
handwritten letter (Riggins et al. Exhibit 26) to my
immediate supervisor, Mr. Triplett, explaining my
experimentation with dyeing Nomex® fabric and further
explaining that I had identified several agents having
dye promoting capability for NomexR fibers. In this
letter, I specifically listed Halcomid M-8-10 (aliphatic
amide), N,N-diethylbenzamide (aromatic amide with 11 carbon
atoms, 3,6% swelling value), and N,N-dibutylformamide
(aliphatic amide with 9 carbon atoms, 1,5% swelling value)
as being effective Nomex® dyeing carriers. In addition,
I expressed that several other intermediate chemicals
for the preparation of other members of the same “family”
of amide carriers had been ordered so that further
experimentation with dyeing Nomex® could be conducted.
Dr. Hansen testified (Affidavit Testimony of Dr. John H.
Hansen, para. 11-12 (Record of Party Riggins et al. (Paper
No. 98), p. 17-18 (RR 17-18)):
11. Dr. Riggins . . . tested N,N-dimethylbenzamide
an aromatic amide, and N,N-dibutylformamide, an aliphatic
amide between February 16, 1990, and February 22, 1990
(Riggins, et al. Exhibit 22; Notebook 1664, p. 18). After
reviewing his notebook entries, I recall that the use of
N,N-dimethylformamide resulted in a deep shade of dyeing,
and that the use of N,N-dimethylbenzamide resulted in only
light dyeing because its swelling value was too low.
12. Later, between February 20, 1990, and
February 26, 1990, Dr. Riggins attempted to dye Nomex®
T-455 fabric with N,N-diethylbenzamide, an aromatic
amide that Dr. Riggins determined to have 11 carbon
atoms and a swelling value of 3.6%. Riggins et al.
Exhibit 22; Notebook 1664, pp. 29, 31). After
conducting his testing, Dr. Riggins found that the
N,N-diethylbenzamide, which has a large swelling value,
promoted dyeing of Nomex® to a much greater degree than
N,N-dimethylbenzamide, which has a much smaller value.
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