Coloration of pekk fibers

• US 5,300,122 A
• Filed: 10/01/1992
• Issued: 04/05/1994
• Est. Priority Date: 10/01/1992
• Status: Expired due to Fees

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Rodini, David J.
• Primary Examiner(s): Skaling, Linda
• Assistant Examiner(s): LIOTT, CAROLINE L
• Application Number:
  US07/955,274
• Time in Patent Office: 551 Days
• Field of Search: 8/607, 8/610
• US Class Current: 8/607
• CPC Class Codes: D06P 3/004 using dispersed dyes

Abstract

PEKK fiber is dyed with a disperse dye in an organic dye carrier.

Claims

1. A process for dyeing and reducing the shrinkage of a fiber of a polyetherketoneketone having the following repeating structural unit ##STR2## where A is m-phenylene, p-phenylene or both m-phenylene and p-phenylene present in different repeating units, comprising treating the fiber for at least about one-half hour at a temperature of about 120°

C. to 140°

C. in an aqueous bath of a carrier containing a disperse dye, said carrier being selected from the group consisting of diphenyl ether and acetophenone and being present in an amount of at least 40% based on the weight of the fiber to be treated and said dye being present in an amount of at least 0.5% based on the weight of the fiber.