Dyeable polyamides containing an antistatic agent
AssigneePhillips Fibers Corporation
InventorsRonald D. Mathis, James S. Dix
Life of this patent
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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 dihydrocarbyl dithiophosphinate.
Claims23
A polyamide composition comprising (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 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 and B 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) a zinc dihydrocarbyldithiophosphinate in which the hydrocarbyl group is selected from acyclic alkyl radicals containing 4 to 10 carbon atoms and cycloaliphatic radicals containing from 4 to 10 carbon atoms;
- said zinc dihydrocarbyldithiophosphinate being present in said polyamide composition in such an amount that when said polyamide composition is dyed the K/S value is greater than that which would be observed if no zinc dihydrocarbyldithiophosphinate were present, and said antistatic agent being present in an amount sufficient to improve the antistatic characteristics of said polyamide.
A composition according to claim 11 wherein said polyamide composition also contains tetrakis[methylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate)] methane in an amount in the range of from about 0.02 to about 2 weight percent based on the weight of polyamide plus antistatic agent.
A polyamide composition comprising (A) a polyamide, (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 and B 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) zinc dicyclohexyldithiophosphinate;
- wherein the amount of said antistatic agent is in the range of about 1 to about 12 weight percent, based on the weight of the polyamide, and the amount of zinc dicyclohexyldithiophosphinate is in the range of about 0.02 to about 2.5 weight percent, based on the weight of polyamide plus antistatic agent.
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:
- ##STR4## 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;
- and (C) at least one zinc dihydrocarbyldithiophosphinate in which the hydrocarbyl group is selected from acyclic alkyl radicals containing 4 to 10 carbon atoms and cycloaliphatic radicals containing from 4 to 10 carbon atoms;
- wherein the amount of antistatic agent is sufficient to improve the antistatic characteristics of said polyamide and the amount of zinc dihydrocarbyldithiophosphinate is such that when said polyamide composition is dyed the K/S value will be greater than that which would be observed if the zinc dihydrocarbyldithiophosphinate were not present in said polyamide composition.
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:
- ##STR5## 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;
- and (C) zinc dicyclohexyldithiophosphinate;
- wherein the amount of said antistatic agent is in the range of about 1 to about 12 weight percent, based on the weight of the polyamide, and the amount of zinc dicyclohexyldithiophosphinate is in the range of about 0.02 to about 2.5 weight percent, based on the weight of the polyamide plus the antistatic agent.
Dependencies are inferred from the claim text.