Interference 103,685
4. The range of residual carrier for the aromatic
amide carriers (DEB, DEET, DIP) was from 6.0% to 9.0%.
Based on my experience with commercial dyeing and three
test results, I anticipate that a range of 1.0% to 10.0%
residual aromatic amide carrier would remain on aromatic
polyamide fibers and fabrics.
5. One benefit of the residual carrier is that
it enhances the printability of the dyed and scoured
aromatic polyamide fibers and fabrics.
Riggins’ declaration is amply supported by Riggins’ Exhibit 29(a)
(RX 29(a)). Exhibit 29(a) appears to be a memorandum entitled
Residual Carrier Testing dated October 10, 1997, from H. Riggins
to Mary Sullivan (RX 29(a), p. 1). The Memorandum reads in
pertinent part (RX 29(a), pp. 1-2):
Judge McKelvey raised a question of carrier remaining
in piece dyed fabrics involving aromatic amide carriers.
A series of dyeings were done on Nomex IIIA and after
washing, residual carrier was determined by the “DuPont
Test Method”, attached [RX 29(a), p. 3].
An outline of treatment is:
1) Hem and scour, condition fabrics.
2) Dye 60 min. at 270OF
Formula - 3 gpl Formic acid
40 gpl Carrier
100% owf of Navy stock, Basic dyes
20 gpl Sodium nitrate
Dye bath ratio to fabric 10:1
3) Afterscour, condition and test
Note: Prescouring was conducted on approximately
200gms of fabric in a Sears washing Machine on low volume
(12 gal) warm rinse and wash, with 90 g. of apexomine
511.S (Surfactant) and 22.5 g of Soda ash.
Afterscouring, repeated prescouring plus
additional identical cycle but at 140O F.
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