Spun-dyed aramid fibers
AssigneeTeijin Aramid B.V.
InventorRobin Winters
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Abstract
Spun-dyed aramid fibers, wherein spun-dyeing was performed with a completely organic pigment exhibiting the chemical structure of formula (I): wherein, independently from one another, R1 represents a substituent of formula Xa or a substituent of formula Xb: wherein Xa is linked via the group NH having two bonds in the structure represented by Xa, whilst Xb is linked via the carbon atom, which is in a para relationship with the NH2-group of Xb; and R2 represents H or NH2. The spun-dyed aramid fibers exhibit constant colouristic properties and wash proof properties.
Claims10
Spun-dyed aramid fibers, wherein spun-dyeing was performed with a completely organic pigment, having the chemical structure of formula (I),
- wherein independently from one another
- R1 represents a substituent of formula Xa or a substituent of formula Xb
- wherein Xa is linked via the group NH having only one N—C bond in the structure represented by Xa, whilst Xb is linked via the carbon atom, which is in a para relationship with the NH2-group of Xb, and
- R2 represents H or NH2.
Dependencies are inferred from the claim text.