Interference 103,685
Results:
Sample ID 10-F-1 10-G-2 10-H-3 10-I-4 10-J-5 10-K-6 10-L-7
Carrier ID None “Dymex” BenzylAlc DIP CHP DEET DEB
Initial Wt. 25.20 27.40 26.69 26.37 27.12 26.54 26.81
Hemmed Wt. 25.40 27.54 26.90 26.56 27.33 26.75 27.02
Prescoured
Wt. 24.79 27.21 26.31 25.99 27.08 26.35 26.67
Dyed Wt. 24.56 28.40 26.94 28.54 30.01 29.69 29.40
% Addon -0.9 4.4 2.4 9.9 10.9 12.8 10.3
Residual
carrier 0.0 3.6 4.0 8.8 5.4 7.4 5.9
Color - L 32.58 17.94 18.82 18.26 17.65 17.44 17.24
a -0.04 0.38 0.49 0.09 0.14 0.23 0.21
b -19.62 -6.18 -8.73 -6.14 -6.00 -6.61 -6.19
Further Identification of carriers -
Dymex - A self emulsifiable formulated acetophenone
sold by Sandoz.
Benzyl alcohol is a pure chemical.
DIP . Represents N,N-dipropylbenzamide, prepared by
reaction of benzoyl chloride and dipropylamine.
CHP . Represents N-cyclohexylpyrrolidone, sold by
BASF or ISP.
DEET . Represents N,N-diethyl-m-toluamide sold by
Morflex and Henkel
DEB . Represents N,N-diethylbenzamide, prepared by
reaction of benzoyl chloride and diethyamine.
Discussion.
Clearly, all these carriers showed substantial
residual carrier in Nomex aramid fiber after dyeing/
scouring. The range of residual carrier for aromatic
amide carriers (DEB, DEET, DIP) was about 6 to 9%.
Keeping in mind that other selection of carrier
(dimethylbenzamide or dibutylbenzamide), or carrier
level might affect residual, a range of 1-10% residual
might be anticipated for aromatic amide carriers from
these trials and data. It seems worth followup to
better define the consequences of residual carrier on
aramid fiber/fabric properties beyond what we already
know - as in camo processing.
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Last modified: November 3, 2007