Interference 103,685
Materials have been ordered for preparation of a
family of “carriers” based on current information which
should add to our current list of about six.
Details NBP 1664-28, 1664-18[.]
With regard to the above-described Riggins’ laboratory
notebook entries and handwritten letter, Dr. Riggins testified
(Affidavit Testimony of Dr. Phillip H. Riggins, page 9-10,
para. 24-26 (Record of Party Riggins et al. (Paper No. 98),
p. 9-10 (RR 9-10)):
24. Between February 16, 1990, and February 22,
1990, I tested both N,N-dibutylformamide, an aliphatic
amide, and N,N-dimethylbenzamide, an aromatic amide
having 9 carbon atoms and a swelling value of -0.5%, as
potential carriers (Riggins et al. Exhibit 22; Notebook
1664, p. 28). In this testing, I used Nomex® T-455
fabric, the AhibaR dyeing equipment, and acid blue dye.
Dyeing was conducted at 265OF for 1.5 hours. This testing
showed that although use of N,N-dibutylformamide resulted
in a deep shade of dyeing, use of N,N-dimethylbenzamide
resulted in only light dyeing. Since its number
of carbon atoms was close to that of both CHP and
N,N-diloutyl [sic] formamide, it appears that the
reason N,N-dimethylbenzamide did not function well as
a carrier is because its swelling value was too low.
25. Later, between February 20, 1990, and
February 26, 1990, I attempted to dye NomexR T-455
fabric with N,N-diethylbenzamide, an aromatic amide
having 11 carbon atoms and a swelling value of 3.6%.
(Riggins et al. Exhibit 22; Notebook 1664, pp. 29, 31).
I again used Nomex® T-455 fabric, the Ahiba ® dyeing
apparatus, and acid blue dye, and dyed the fabric at a
temperature of 265OF for 1.5 hours. N,N-diethylbenzamide,
which has a large swelling value, promoted dyeing of
Nomex® to a much greater degree than N,N-dimethylbenzamide,
because of the latter’s smaller swelling value. On
page 29 of Notebook 1664, I noted that “molecular size
may affect dyeing efficiency on Nomex,” thereby explicitly
identifying the correlation between the size (or number
of carbon atoms) of a carrier and its effectiveness in
-56-
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