Method of increasing chlorine fastness
AssigneeHuntsman International LLC
InventorPhilippe Ouziel
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method of increasing the chlorine fastness of dyed synthetic polyamide fiber materials, which comprises treating the fiber material after dyeing with an aqueous liquor comprising a thiourea/formaldehyde/bisphenol condensate or a thiourea/polyisocyanate adduct.
Claims10
A method of increasing the chlorine fastness of dyed synthetic polyamide fibre materials, which comprises treating the fibre material after dyeing with an aqueous liquor comprising a condensation product of thiourea, formaldehyde and a bisphenol or a thiourea/diisocyanate adduct of formula
- wherein X is hexamethylene or a radical of the formulae
- R1 represents hydrogen, —CO—NR2R3,—CO—O—N═CR4R5, —COOR6 or —CO—NH—CS—NH2,
- wherein R2 denotes hydrogen, C1-C6 alkyl, C6-C30 aryl or C7-C36 aralkyl,
- R3 is C1-C6 alkyl, C6-C30 aryl or C7-C36 aralkyl,
- R4 is hydrogen, C1 -C6 alkyl, C6-C30 aryl or C7- C36 aralkyl,
- R5 is C1-C6 alkyl, C6-C30 aryl or C7-C36 aralkyl, and
- R6 is hydrogen, C1-C6alkyl, C6-C30 aryl or C7-C36 aralkyl.
A condensation product of thiourea, formaldehyde, bisphenol S and phenol-4-sulfonic acid.
A thiourea/diisocyanate adduct of formula
- wherein X is hexamethylene or a radical of the formulae
- R1 represents hydrogen, —CO—NR2R3, —CO—O—N═CR4R5 or —CO—NH—CS—NH2,
- wherein R2 denotes hydrogen, C1-C6 alkyl, C6-C30 aryl or C7-C36 aralkyl,
- R3 is C1-C6 alkyl, C6-C30aryl or C7-C36 aralkyl,
- R4 is hydrogen, C1-C6 alkyl, C6-C30 aryl or C7-C36 aralkyl, and
- R5 is C1-C6 alkyl, C6-C30aryl or C7-C36 aralkyl.
A thioure/diisocyanate adduct of the formulae (101) - (107)
A method of increasing the stain resistance of dyed synthetic polyamide carpets, which comprises treating the carpet after dyeing with an aqueous liquor comprising a condensation product of thiourea, formaldehyde and a bisphenol.
A method of increasing the stain resistance of dyed synthetic polyamide carpets, which comprises treating the carpet after dyeing with an aqueous liquor comprising a condensation product of thiourea, formaldehyde and a bisphenol and a polycarboxylic acid.
Dependencies are inferred from the claim text.