Claims
- 1. A process for preparing indigo-dyeable polyester fiber comprising applying to the fiber a coating of polyvinyl alcohol and a water-soluble polyamide containing secondary amino groups in the polymer chain which have been reacted with epichlorohydrin and curing the coating.
- 2. The process of claim 1 wherein the polyvinyl alcohol and water-soluble polyamide are added in the proportion of 80/20 and 95/5 wt. ratio and at a level of between about 0.25 and 2% of active ingredient based on the weight of the fiber.
- 3. The process of claim 1 wherein the molecular weight of the polyvinyl alcohol is between about 40,000 and 115,000.
- 4. The process of claim 1 wherein the curing is effected at temperatures of 120.degree. C. to 140.degree. C. for about 5 to 10 minutes.
Parent Case Info
This is a division, of application Ser. No. 220,809, filed Dec. 29, 1980 now U.S. Pat. No. 4,335,185.
US Referenced Citations (9)
Divisions (1)
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Number |
Date |
Country |
Parent |
220809 |
Dec 1980 |
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