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US 7,371,700 B2Granted
Dyed microfiber textiles
AssigneeMilliken & Company
InventorsKaushal Gandhi, Benjamin H. Glover
Life of this patent
Estimating the term…
Abstract
A nonwoven textile substrate formed from microfibers with a polyurethane matrix fully and/or partially impregnated therein, a non-azo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an ΔE light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
Claims12
A device comprising:
- a nonwoven textile substrate having microfibers formed therein and further having a matrix at least partially impregnated therein and at least partially surrounding at least a portion of the microfibers, the microfibers including exposed surface area;
- a non-azo disperse dye disposed in the exposed surface area of the microfibers,
- wherein the device is produced by a process comprising the steps of:
- (a) dyeing the nonwoven textile substrate with a non-azo disperse dye and (b) scouring the dyed nonwoven textile substrate by a process comprising the steps of:
- (i) immersing the dyed nonwoven textile substrate in an aqueous bath comprising at least one alkali material, (ii) increasing the temperature of the aqueous bath to a first temperature, (iii) adding a reductive scouring material to the aqueous bath at the first temperature, (iv) scouring the dyed nonwoven textile substrate in the aqueous bath at the first temperature, (v) decreasing the temperature of the aqueous bath to a second temperature, and (vi) rinsing the dyed nonwoven textile substrate.
2 more elements
A device comprising:
- a textile substrate having microfibers formed therein and further having a matrix at least partially impregnated therein and at least partially surrounding at least a portion of the microfibers, the microfibers including exposed surface area;
- n-azo disperse dye disposed in the exposed surface area of the microfibers,
- wherein the device is produced by a process comprising the steps of:
- (a) dyeing the textile substrate with a non-azo disperse dye and (b) scouring the dyed textile substrate by a process comprising the steps of:
- (i) immersing the dyed textile substrate in an aqueous bath comprising at least one alkali material, (ii) increasing the temperature of the aqueous bath to a first temperature, (iii) adding a reductive scouring material to the aqueous bath at the first temperature, (iv) scouring the dyed textile substrate in the aqueous bath at the first temperature, (v) decreasing the temperature of the aqueous bath to a second temperature, and (vi) rinsing the dyed textile substrate.
2 more elements
Dependencies are inferred from the claim text.