Antistatic dyeable polyamide composition
AssigneePhillips Petroleum Company
InventorsRonald D. Mathis, James S. Dix
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Abstract
In polyamide compositions containing the reaction product of (1) a block copolymer of propylene oxide, ethylene oxide, and an alkylene diamine and (2) a dicarboxylic acid ester in an amount sufficient to provide improved antistatic characteristics to the polyamide, the apparent dyeability can be increased by including in said polyamide composition a sufficient amount of at least one zinc sulfinate of the formula: Zn(R"SO.sub.2).sub.2 wherein R" is an alkyl group containing from 4 to 20 carbon atoms.
Claims36
A polyamide composition prepared by admixing (A) a polyamide;
- (B) an antistatic agent comprising the reaction product of (1) at least one tetrol compound of the formula:
- ##STR2## where a, b, c, d, e, f, g, and hare each a whole number and the total of a, b, c, and d is between 8 and 1,000 and the total of e, f, g, and h is between 8 and 850, Q is an alkylene radical containing 1 to 13 carbon atoms, wherein the molecular weight of said tetrol compound is between about 1,650 and about 135,000 and said (OCH.sub.2 CH.sub.2) moieties make up from about 10 to about 90 weight percent of said tetrol compound, and (2) at least one dicarboxylic acid ester having the formula R'OOC--A--COOR' wherein A is a valence bond or a divalent hydrocarbyl radical having from 1 to 8 carbon atoms and R' is an alkyl group containing 1 to 4 carbon atoms or a hydroxyalkyl group containing 2 to 4 carbon atoms, wherein the two R' radicals may be the same or different;
- and (C) at least one zinc alkyl sulfinate of the formula:
- Zn(R"SO.sub.2).sub.2
- wherein R" is an alkyl group containing from 4 to 20 carbon atoms;
- wherein the amount of antistatic agent is that which is sufficient to improve the antistatic characteristics of said polyamide and the amount of zinc alkyl sulfinate is such that when said polyamide composition is dyed with an acid dye, the K/S value will be greater than that which would be observed if the zinc alkyl sulfinate were not present in said polyamide composition.
In the forming of a polyamide composition by admixing ingredients comprising (A) a polyamide and (B) an antistatic agent comprising the reaction product of (1) at least one tetrol compound of the formula:
- ##STR3## where a, b, c, d, e, f, g, and h are each a whole number and the total of a, b, c, and d is between 8 and 1,000 and the total of e, f, g, and h is between 8 and 850, Q is an alkylene radical containing 1 to 13 carbon atoms, wherein the molecular weight of said tetrol compound is between about 1,650 and about 135,000 and said (OCH.sub.2 CH.sub.2) moieties make up from about 10 to about 90 weight percent of said tetrol compound, and (2) at least one dicarboxylic acid ester having the formula R'OOC--A--COOR' wherein A is a valence bond or a divalent hydrocarbyl radical having from 1 to 8 carbon atoms and R' is an alkyl group containing 1 to 4 carbon atoms or a hydroxyalkyl group containing 2 to 4 carbon atoms, wherein the two R' radicals may be the same or different;
- the method of obtaining a polyamide composition which when dyed with an acid dye will exhibit greater depth of dyeing than a composition consisting only of said polyamide and said antistatic agent, said method comprising employing as an ingredient in the forming of said polyamide composition at least one zinc sulfinate of the formula:
- Zn(R"SO.sub.2).sub.2
- wherein R" is an alkyl group containing 4 to 20 carbon atoms, said zinc alkyl sulfinate being employed in such an amount that when said polyamide composition is dyed the K/S value will be greater than that of a composition consisting only of said polyamide and said antistatic agent.
Dependencies are inferred from the claim text.