Polyamide compounds

Details Polyamide compounds Polyamide compounds

2005-02-22

2005-02-22

Woodward, Ana (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C525S425000

Reexamination Certificate

active

06858702

ABSTRACT:
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 -1,6-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.

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