Acid dyeable polyester compositions

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 5/17 (2006.01) C08G 69/44 (2006.01) C08L 67/00 (2006.01) C08L 67/02 (2006.01) C08L 77/00 (2006.01) C08L 77/06 (2006.01)

Patent

CA 2386644

An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid- dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene- terephthalamide, -isophthalamide and - ,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e.g., fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.

L'invention concerne une composition de polyester pouvant être colorée à l'acide, comprenant (a) un polyester et (b) une amine secondaire ou un sel d'amine secondaire en quantité suffisante pour promouvoir efficacement la coloration à l'acide. La composition pouvant être colorée à l'acide peut être préparée en mélangeant en fusion le polyester et l'additif polymérique préparé à partir (i) de triamine contenant des unités d'amine secondaire ou de sel d'amine secondaire, et (ii) d'une ou de plusieurs autres unités monomères et/ou polymères. Un additif polymérique comprend un polyamide sélectionné dans le groupe de poly-imino-bisalkylène-térephtalamide, -isophtalamide et -,6-naphtalamide, et leurs sels. L'invention concerne également l'additif polymérique, les mélanges, les articles formés (par exemple, les fibres et les films), les processus de coloration, et les processus de préparation d'une composition de polyester pouvant être colorée à l'acide.

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