Process for the rapid, continuous and waterless dyeing and texturizing and heat-setting of textile and plastic materials
AssigneeMartin Processing, Inc.
InventorJulius Hermes
Life of this patent
Estimating the term…
Loading patent…
AssigneeMartin Processing, Inc.
InventorJulius Hermes
Estimating the term…
A process is disclosed for the rapid, continuous and waterless dyeing of textile and plastic materials in which the dyestuff is dissolved, suspended or dispersed in a high boiling solvent, such as glycol or glycol ether, for carrying out the dyeing step per se, after which the dye textile or plastic material (after cooling if desired) is subjected to a washing with a low boiling organic liquid such as methanol or ethanol (preferably the former) or a chlorinated hydrocarbon solvent, and subsequently dried. The entire series of operations is carried out under nonaqueous or substantially nonaqueous conditions with the complete or substantially complete recovery and recycling of the used dyestuff, the used high boiling solvent, and the used low boiling organic wash liquid.
A process for texturizing and heat-setting textile material containing a low boiling texturizing agent in liquid phase in an amount sufficient to cause flashing of the low boiling texturizing agent upon contact of the thus-treated textile material with a high boiling organic liquid at a relatively high temperature, comprising contacting textile material impregnated with the low boiling liquid texturizing agent with the high boiling organic liquid at a high temperature thus texturizing and heat-setting the textile material, cooling the texturized textile material and washing same with a low boiling organic liquid which is free or substantially free of water, followed by drying the texturized textile material, the washing and drying steps being carried out in an essentially closed system, with the separation and recovery of the low boiling organic wash liquid, low boiling organic wash liquid thus recovered being recycled to the washing step and with the low boiling organic wash liquid vaporized from the textile material during the drying step being recovered, and with the low boiling texturizing agent that is evaporated during the texturizing and heat-setting being removed from the high temperature textile material contacting zone as a mixture thereof with vapor of the high boiling organic liquid.
Dependencies are inferred from the claim text.