Process for modifying polyamide dyeability using co-fed polyamid

Details Process for modifying polyamide dyeability using co-fed polyamid Process for modifying polyamide dyeability using co-fed polyamid

1990-04-17

1992-11-24

Carrillo, Ana L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

26421122, 26433119, C08L 7700, B29C 4700

Patent

active

051662787

ABSTRACT:
A process for modifying the dyeability of polyamide polymers is disclosed, the process involving the addition of co-fed polyamide flake of the same type of polyamide as the base polyamide with the co-fed flake having a significant effect on the final dyeability. The additive flake comprises high- or low-amine-end polyamide flake which is mixed and melted with the base polyamide to adjust the total number of amine ends in the polymer, thereby controlling the polymer dyeability.

REFERENCES:
patent: 3357955 (1967-12-01), Bryan
patent: 3796692 (1974-03-01), Foltz et al.
patent: 3884582 (1975-05-01), Britt et al.
patent: 3985714 (1976-10-01), Kidder
patent: 4104324 (1978-08-01), Radlmann et al.
patent: 4937034 (1989-04-01), Sewell

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