Process for rapid dyeing of textiles
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorsAllen G. Pittman, William L. Wasley, Nelson F. Getchell
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Abstract
Textile fibers are dyed in a dyebath containing the dye and ethylene glycol as the solvent. Generally, the dyeing is conducted at a temperature of about from 110.degree. to 165.degree. C. until the desired level of dyeing is attained. Excellent results are obtained in a very short time period, e.g., from about 2 seconds to 10 minutes.
Claims17
A process of modifying proteinaceous fibers, which comprises contacting the fibers with a solution of a dyeing or finishing agent in ethylene glycol in the absence of water and in the presence of 0.6% of an acid, based on the weight of acid to the volume of ethylene glycol, at a temperature of about from 110.degree. to 165.degree. C.
A process for rapidly dyeing proteinaceous fibers in the absence of water, which comprises -
- a. contacting the fibers with a dyebath at a temperature of about from 110.degree. to 165.degree. C., said dyebath containing dye, ethylene glycol as the solvent, and 0.6% of an acid, based on the weight of acid to the volume of ethylene glycol,
- b. continuing said contact until a desired level of dyeing is obtained, and
- c. separating the dyed fibers from the dyebath.
Dependencies are inferred from the claim text.