Wet fixation of modifying agents on fibrous systems by heating in aqueous salt solution
Abstract
Abstract MODIFYING AGENTS SUCH AS CREASEPROOFING PRECONDENSATES OR DYES, ARE WET FIXED IN A WATER-SWELLABLE FIBROUS SYSTEM OR WEB SUCH AS A CELLULOSE-CONTAINING FABRIC BY APPLYING AN AQUEOUS SOLUTION CONTAINING ONE OR MORE SUCH AGENTS OF THE DESIRED TYPE TO THE WEB AND THEREAFTER FIXING SUCH AGENTS IN THE WET WEB BY IMMERSING IT IN A HOT AQUEOUS SALT SOLUTION WHICH CONTAINS ONE OR MORE STABLE SALT OF A STRONG ACID WHICH DOES NOT DECOMPOSE IN WATER SUCH AS SODIUM SULFATE. THIS WET FIXATION TECHNIQUE IS USEFUL IN IMPARTING DIMENSIONAL STABILITY TO CELLULOSIC WEB SUCH AS COTTON FABRICS OR PAPER OR IN OTHERWISE MODIFYING THEIR PHYSICAL OR CHEMICAL PROPERTIES E.G., IN DYEIBG THEM. THE SALT SOLUTION SERVES TO PREVENT OR MINIMIZE MIGRATION OF THE TREATING AGENT FROM THE FIBERS DURING A FINISHING OPERATION.
Inventors
- 👤 R Liggett
Bibliographic Details
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