×

Process and compositions for enzymatic desizing and bleaching of textiles

  • US 2,974,001 A
  • Filed: 07/16/1958
  • Issued: 03/07/1961
  • Est. Priority Date: 07/20/1957
  • Status: Expired due to Term
First Claim
Patent Images

1. IN THE PROCESS OF BLEACHING STARCH-SIZED TEXTILE FABRIC WITH AQUEOUS SODIUM CHLORITE LIQUOR, THE IMPROVEMENT WHICH COMPRISES SUPPLYING THE CHLORITE LIQUOR IN NEUTRAL CONDITION AND CONTAINING A CONCENTRATION OF AMYLASE DESIZING AGENT SUFFICIENT TO EFFECTIVELY DESIZE THE FABRIC IN A PERIOD OF FROM 10 TO 60 MINUTES, THE LIQUOR ALSO CONTAINING A COMPOUND THAT LIBERATES ACID UPON BEING HEATED TO AT LEAST 60*C., THE ACID-LIBERATING COMPOUND BEING IN A CONCENTRATION SUFFICIENT TO CAUSE THE LIQUOR WITH THE LIBERATED ACID TO EFFECTIVELY BLEACH THE FABRIC, AND FIRST CONTACTING THE FABRIC WITH THE LIQUOR AT A TEMPERATURE BETWEEN 20* AND 60*C. FOR BETWEEN 10 AND 60 MINUTES TO EFFECT DESIZING, AND THEN RAISING THE TEMPERATURE OF TREATMENT TO ABOVE 60*C. TO EFFECT BLEACHING.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×