Low voc ionic solvents as dye carriers for aramid fibers
OwnerFelipe A. Donate, Rebecca J. Wachowicz +1inventors
InventorsFelipe A. Donate, Rebecca J. Wachowicz, Matthew W. Entorf
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Abstract
Compositions and methods for dyeing aramids include one or more dye carriers selected from dialkyl imidazolium salts having a cation of the general formula: where R1 and R2 are, independently, selected from C1 to C8 alkyl, and bis-quaternary amine salts having a cation of the formula: where R1 is, independently at each instance, a C1-C6 alkyl; R2 and R3 are, independently at each instance, a C1-C6 alkyl or substituted C1-C6 alkyl, and X is, independently at each instance, a halogen; and one or more cationic dyes.
Claims8
A composition for dyeing aramids, comprising:
- one or more dye carriers selected from
- dialkyl imidazolium salts having a cation of the general formula:
- where R1 and R2 are, independently, selected from C1 to C8 alkyl, and bis-quaternary amine salts having a cation of the formula:
- where R1 is, independently at each instance, a C1-C6 alkyl;
- R2 and R3 are, independently at each instance, a C1-C6 alkyl or substituted C1-C6 alkyl, and X is, independently at each instance, a halogen;
- and
- one or more cationic dyes.
A method, comprising:
- contacting an aramid with a dye formulation at a temperature in a range of 120° C. to 160° C., the dye formulation comprising:
- one or more dye carriers selected from
- dialkyl imidazolium salts having a cation of the general formula:
- where R1 and R2 are, independently, selected from C1 to C8 alkyl, and bis-quaternary amine salts having a cation of the formula:
- where R1 is, independently at each instance, a C1-C6 alkyl;
- R2 and R3 are, independently at each instance, a C1-C6 alkyl or substituted C1-C6 alkyl, and X is, independently at each instance, a halogen;
- and
- one or more cationic dyes.
Dependencies are inferred from the claim text.