Dyeable and flame-retarded thermoplastic polyurethane fibers

A process of making a fiber, comprising the steps of:

• (I) preparing a thermoplastic polyurethane composition comprising (a) a thermoplastic polyurethane comprising the reaction product of:
• (i) one or more polyols, (ii) one or more diisocyanates, (iii) one or more chain extenders, (iv) optionally one or more crosslinking agents, and (v) one or more functional modifiers wherein each said functional modifier is a reaction product of an aminodiol and a Bronsted acid, wherein the aminodiol comprises N-methyldiethanolamine (MDEA), 3-diethylamino-1,2-propanediol (DEAPD), 2-amino-2-methyl-1,3-propanediol (AMPD), N-(n-butyl)diethanolamine (BDEA), N-(t-butyl)diethanol-amine (TBDEA), N-phenyidiethanolamine (PDEA), diethyl N-N-bis(2-hydroxyethyl) amino-methyl phosphonate, N-ethyldiethanolamine, N-propyldiethanolamine, N-isopropyldiethanolamine, aminopropyldiethanolamine, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, 3-dipropylamino-1,2-propanediol, 3-diisopropylamino-1,2-propanediol, 2-amino-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, N,N′-bis(2-hydroxyethyl)ethylenediamine, 3-pyrrolidino-1,2-propanediol, diethanolamine, diisopropanolamine, 3-piperidino-1,2-propanediol, 4,4′-trimethylene bis(1-piperidine ethanol), 1,4-bis(2-hydroxyethl)piperazine, 3-morpholino-1,2-propanediol, bis(2-hydroxyethyl)octadecylamine, or any combinations thereof;
• (II) making a fiber from said thermoplastic polyurethane composition;
• wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane of component (a).

A method of increasing the dyeability of a fiber made from a thermoplastic polyurethane composition, said method comprising the steps of:

• (I) adding one or more functional modifiers to a mixture of (i) one or more polyols, (ii) one or more diisocyanates, (iii) one or more chain extenders, and (iv) optionally one or more crosslinking agents;
• wherein each said functional modifier is a reaction product of an aminodiol and a Bronsted acid, wherein the aminodiol comprises N-methyldiethanolamine (MDEA), 3-diethylamino-1,2-propanediol (DEAPD), 2-amino-2-methyl-1,3-propanediol (AMPD), N-(n-butyl)diethanolamine (BDEA), N-(t-butyl)diethanol-amine (TBDEA), N-phenyidiethanolamine (PDEA), diethyl N-N-bis(2-hydroxyethyl) amino-methyl phosphonate, N-ethyldiethanolamine, N-propyldiethanolamine, N-isopropyldiethanolamine, aminopropyldiethanolamine, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, 3-dipropylamino-1,2-propanediol, 3-diisopropylamino-1,2-propanediol, 2-amino-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, N,N′-bis(2-hydroxyethyl)ethylenediamine, 3-pyrrolidino-1,2-propanediol, diethanolamine, diisopropanolamine, 3-piperidino-1,2-propanediol, 4,4′-trimethylene bis(1-piperidine ethanol), 1,4-bis(2-hydroxyethl)piperazine, 3-morpholino-1,2-propanediol, bis(2-hydroxyethyl)octadecylamine, or any combinations thereof;
• and
• (II) reacting the mixture of step (I) resulting in a thermoplastic polyurethane wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane;
• (III) preparing a thermoplastic polyurethane composition that comprises the thermoplastic polyurethane of step (II);
• (IV) making a fiber from the resulting thermoplastic polyurethane composition;
• wherein the resulting fiber has increased dyeability;
• wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane of component (a).

A method of increasing the flame retardancy of a fiber made from a thermoplastic polyurethane composition, said method comprising the steps of:

• (I) adding one or more functional modifiers to a mixture of (i) one or more polyols, (ii) one or more diisocyanates, (iii) one or more chain extenders, and (iv) optionally one or more crosslinking agents;
• wherein each said functional modifier is a reaction product of an aminodiol and a Bronsted acid, wherein the aminodiol comprises N-methyldiethanolamine (MDEA), 3-diethylamino-1,2-propanediol (DEAPD), 2-amino-2-methyl-1,3-propanediol (AMPD), N-(n-butyl)diethanolamine (BDEA), N-(t-butyl)diethanol-amine (TBDEA), N-phenyidiethanolamine (PDEA), diethyl N-N-bis(2-hydroxyethyl) amino-methyl phosphonate, N-ethyldiethanolamine, N-propyldiethanolamine, N-isopropyldiethanolamine, aminopropyldiethanolamine, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, 3-dipropylamino-1,2-propanediol, 3-diisopropylamino-1,2-propanediol, 2-amino-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, N,N′-bis(2-hydroxyethyl)ethylenediamine, 3-pyrrolidino-1,2-propanediol, diethanolamine, diisopropanolamine, 3-piperidino-1,2-propanediol, 4,4′-trimethylene bis(1-piperidine ethanol), 1,4-bis(2-hydroxyethl)piperazine, 3-morpholino-1,2-propanediol, bis(2-hydroxyethyl)octadecylamine, or any combinations thereof;
• and
• (II) reacting the mixture of step (I) resulting in a thermoplastic polyurethane wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane;
• (III) preparing a thermoplastic polyurethane composition that comprises the thermoplastic polyurethane of step (II);
• (IV) making a fiber from the resulting thermoplastic polyurethane composition;
• wherein the resulting fiber has increased flame retardancy;
• wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane of component (a).

A method of increasing the flame retardancy and/or dyeability of thermoplastic polyurethane composition, said method comprising the steps of:

• (I) adding one or more functional modifiers to a mixture of (i) one or more polyols, (ii) one or more diisocyanates, (iii) one or more chain extenders, and (iv) optionally one or more crosslinking agents;
• wherein each said functional modifier is a reaction product of an aminodiol and a Bronsted acid, wherein the aminodiol comprises N-methyldiethanolamine (MDEA), 3-diethylamino-1,2-propanediol (DEAPD), 2-amino-2-methyl-1,3-propanediol (AMPD), N-(n-butyl)diethanolamine (BDEA), N-(t-butyl)diethanol-amine (TBDEA), N-phenyidiethanolamine (PDEA), diethyl N-N-bis(2-hydroxyethyl) amino-methyl phosphonate, N-ethyldiethanolamine, N-propyldiethanolamine, N-isopropyldiethanolamine, aminopropyldiethanolamine, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, 3-dipropylamino-1,2-propanediol, 3-diisopropylamino-1,2-propanediol, 2-amino-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, N,N′-bis(2-hydroxyethyl)ethylenediamine, 3-pyrrolidino-1,2-propanediol, diethanolamine, diisopropanolamine, 3-piperidino-1,2-propanediol, 4,4′-trimethylene bis(1-piperidine ethanol), 1,4-bis(2-hydroxyethl)piperazine, 3-morpholino-1,2-propanediol, bis(2-hydroxyethyl)octadecylamine, or any combinations thereof;
• and
• (II) reacting the mixture of step (I) resulting in a thermoplastic polyurethane wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane;
• (III) preparing a thermoplastic polyurethane composition that comprises the thermoplastic polyurethane of step (II);
• (IV) making a fiber from the resulting thermoplastic polyurethane composition;
• wherein the resulting fiber has increased flame retardancy and/or dyeability;
• wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane of component (a).