Polyesters and polyester containers having a reduced coefficient of friction and improved clarity

Abstract

Polyesters and polyester containers having a reduced coefficient of friction and improved clarity are produced using an antiblock agent comprising a dried talc having from about 20 to about 300 ppm water or a fatty acid tethered talc. The use of these talcs result in polyesters and polyester containers having a coefficient of less than about 1.0 and a clarity with haze values of less than about 4%.

1 - 40 . (canceled)  
   
   
       41 . A bottle made from a composition comprising polyester and talc, said bottle having a haze value of less than about 4% and a reduced coefficient of friction compared to a bottle made from a composition without talc.  
   
   
       42 . The bottle according to  claim 41 , which is a carbonated soft-drink bottle.  
   
   
       43 . The bottle according to  claim 42 , which is a two-liter bottle.  
   
   
       44 . The bottle according to  claim 41 , wherein the composition comprises about 0.005 to about 0.025 weight percent of talc having an average particle size of about 0.2 to about 10 microns.  
   
   
       45 . The bottle according to  claim 41 , wherein the composition comprises about 0.0125 to about 0.025 weight percent of talc having an average particle size of 20 nanometers to 7 microns.  
   
   
       46 . The bottle according to  claim 41 , which has a haze value of about 0.1 to about 3%.  
   
   
       47 . The bottle according to  claim 41 , which has a coefficient of friction of about 0.01 to about 1.0.  
   
   
       48 . The bottle according to  claim 41 , wherein the talc has been dried so that it contains about 20 to about 300 ppm of water before addition to the polyester.  
   
   
       49 . The bottle according to  claim 41 , wherein the talc has been treated with a fatty acid.  
   
   
       50 . The bottle according to  claim 41 , wherein the talc is a mixture of talc that has been dried so that it contains about 20 to about 300 ppm of water before addition to the polyester and talc that has been treated with a fatty acid.  
   
   
       51 . The bottle according to  claim 41 , wherein the polyester comprises dicarboxylic acid repeat units formed from terephthalic acid, dimethyl terephthalate, isophthalic acid, dimethyl isophthalate, dimethyl-2,6-naphthalenedicarboxylate, 2,6-naphthalenedicarboxylic acid, or mixtures thereof; and glycol repeat units formed from ethylene glycol, diethylene glycol, 1,4-cyclohexane-dimethanol, 1,4-butanediol, or mixtures thereof.  
   
   
       52 . The bottle according to  claim 51 , wherein the dicarboxylic acid repeat units are modified with up to about 15 mole percent of phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, cyclohexanedicarboxylic acid, cyclohexanediacetic acid, diphenyl-4,4′-dicarboxylic acid, succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid, or mixtures thereof.  
   
   
       53 . The bottle according to  claim 51 , wherein the glycol repeat units are modified with up to about 15 mole percent of diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, propane-1,3-diol, butane-1,4-diol, pentane-1,5-diol, hexane-1,6-diol, 3-methylpentanediol-(2,4), 2-methylpentanediol-(1,4), 2,2,4-trimethylpentane-diol-(1,3), 2-ethylhexanediol-(1,3), 2,2-diethylpropane-diol-(1,3), hexanediol-(1,3), 1,4-di-(hydroxyethoxy)-benzene, 2,2-bis-(4-hydroxycyclohexyl)-propane, 2,4-dihydroxy-1,1,3,3-tetramethyl-cyclobutane, 2,2-bis-(3-hydroxyethoxyphenyl)-propane, 2,2-bis-(4-hydroxypropoxyphenyl)-propane, or mixtures thereof.  
   
   
       54 . The bottle according to  claim 41 , wherein the polyester is a poly(ethyleneterephthalate).  
   
   
       55 . The bottle according to  claim 41 , wherein the polyester is a copolyester of terephthalic acid, isopthalic acid, and ethylene glycol.  
   
   
       56 . A stretch blow molded container made from a composition comprising polyester and talc, said container having a haze value of less than about 4% and a reduced coefficient of friction compared to a container made from a composition without talc.  
   
   
       57 . The container according to  claim 56 , which is a carbonated soft-drink bottle.  
   
   
       58 . The container according to  claim 57 , which is a two-liter bottle.  
   
   
       59 . The container according to  claim 56 , wherein the composition comprises about 0.005 to about 0.025 weight percent of talc having an average particle size of about 0.2 to about 10 microns.  
   
   
       60 . The container according to  claim 56 , wherein the composition comprises about 0.0125 to about 0.025 weight percent of talc having an average particle size of 20 nanometers to 7 microns.  
   
   
       61 . The container according to  claim 56 , which has a haze value of about 0.1 to about 3%.  
   
   
       62 . The container according to  claim 56 , which has a coefficient of friction of about 0.01 to about 1.0.  
   
   
       63 . The container according to  claim 56 , wherein the talc has been dried so that it contains about 20 to about 300 ppm of water before addition to the polyester.  
   
   
       64 . The container according to  claim 56 , wherein the talc has been treated with a fatty acid.  
   
   
       65 . The container according to  claim 56 , wherein the talc is a mixture of talc that has been dried so that it contains about 20 to about 300 ppm of water before addition to the polyester and talc that has been treated with a fatty acid.  
   
   
       66 . The container according to  claim 56 , wherein the polyester comprises dicarboxylic acid repeat units formed from terephthalic acid, dimethyl terephthalate, isophthalic acid, dimethyl isophthalate, dimethyl-2,6-naphthalenedicarboxylate, 2,6-naphthalenedicarboxylic acid, or mixtures thereof; and glycol repeat units formed from ethylene glycol, diethylene glycol, 1,4-cyclohexane-dimethanol, 1,4-butanediol, or mixtures thereof.  
   
   
       67 . The container according to  claim 56 , wherein the dicarboxylic acid repeat units are modified with up to about 15 mole percent of phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, cyclohexanedicarboxylic acid, cyclohexanediacetic acid, diphenyl-4,4′-dicarboxylic acid, succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid, or mixtures thereof.  
   
   
       68 . The container according to  claim 56 , wherein the glycol repeat units are modified with up to about 15 mole percent of diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, propane-1,3-diol, butane-1,4-diol, pentane-1,5-diol, hexane-1,6-diol, 3-methylpentanediol-(2,4), 2-methylpentanediol-(1,4), 2,2,4-trimethylpentane-diol-(1,3), 2-ethylhexanediol-(1,3), 2,2-diethylpropane-diol-(1,3), hexanediol-(1,3), 1,4-di-(hydroxyethoxy)-benzene, 2,2-bis-(4-hydroxycyclohexyl)-propane, 2,4-dihydroxy-1,1,3,3-tetramethyl-cyclobutane, 2,2-bis-(3-hydroxyethoxyphenyl)-propane, 2,2-bis-(4-hydroxypropoxyphenyl)-propane, or mixtures thereof.  
   
   
       69 . The container according to  claim 56 , wherein the polyester is a poly(ethyleneterephthalate).  
   
   
       70 . The container according to  claim 56 , wherein the polyester is a copolyester of terephthalic acid, isopthalic acid, and ethylene glycol.  
   
   
       71 . A bottle preform made from a composition comprising a polyester and about 0.0125 to about 0.025 weight percent of talc having an average particle size of 20 nanometers to 7 microns, wherein the preform is capable of being formed into a bottle having a reduced coefficient of friction and a haze value of less than about 4%.  
   
   
       72 . The bottle preform according to  claim 71 , which is capable of being formed into a bottle having a haze value of about 0.1 to about 3%.  
   
   
       73 . The bottle preform according to  claim 71 , which is capable of being formed into a bottle having a coefficient of friction of about 0.01 to about 1.0.  
   
   
       74 . The bottle preform according to  claim 71 , wherein the talc has been dried so that it contains about 20 to about 300 ppm of water before addition to the polyester.  
   
   
       75 . The bottle preform according to  claim 71 , wherein the talc has been treated with a fatty acid.  
   
   
       76 . The bottle preform according to  claim 71 , wherein the talc is a mixture of talc that has been dried so that it contains about 20 to about 300 ppm of water before addition to the polyester and talc that has been treated with a fatty acid.  
   
   
       77 . The bottle preform according to  claim 71 , wherein the polyester comprises dicarboxylic acid repeat units formed from terephthalic acid, dimethyl terephthalate, isophthalic acid, dimethyl isophthalate, dimethyl-2,6-naphthalenedicarboxylate, 2,6-naphthalenedicarboxylic acid, or mixtures thereof; and glycol repeat units formed from ethylene glycol, diethylene glycol, 1,4-cyclohexane-dimethanol, 1,4-butanediol, or mixtures thereof.  
   
   
       78 . The bottle preform according to  claim 77 , wherein the dicarboxylic acid repeat units are modified with up to about 15 mole percent of phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, cyclohexanedicarboxylic acid, cyclohexanediacetic acid, diphenyl-4,4′-dicarboxylic acid, succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid, or mixtures thereof.  
   
   
       79 . The bottle preform according to  claim 77 , wherein the glycol repeat units are modified with up to about 15 mole percent of diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, propane-1,3-diol, butane-1,4-diol, pentane-1,5-diol, hexane-1,6-diol, 3-methylpentanediol-(2,4), 2-methylpentanediol-(1,4), 2,2,4-trimethylpentane-diol-(1,3), 2-ethylhexanediol-(1,3), 2,2-diethylpropane-diol-(1,3), hexanediol-(1,3), 1,4-di-(hydroxyethoxy)-benzene, 2,2-bis-(4-hydroxycyclohexyl)-propane, 2,4-dihydroxy-1,1,3,3-tetramethyl-cyclobutane, 2,2-bis-(3-hydroxyethoxyphenyl)-propane, 2,2-bis-(4-hydroxypropoxyphenyl)-propane, or mixtures thereof.  
   
   
       80 . The bottle preform according to  claim 71 , wherein the polyester is a poly(ethyleneterephthalate).  
   
   
       81 . The bottle preform according to  claim 71 , wherein the polyester is a copolyester of terephthalic acid, isopthalic acid, and ethylene glycol.  
   
   
       82 . A drink bottle, said bottle having been stretch blown from a preform into a bottle without thermoforming, said preform having been made from a polyester, said polyester containing from about 0.001 to about 0.025 wt % talc having an average particle size of from about 0.2 μm to about 10 μm, said bottle having a reduced coefficient of friction as compared to a bottle made from said polyester but not containing said talc, and said bottle having a haze value of about 0.1% to about 4%.  
   
   
       83 . A drink bottle having smooth surfaces such that when placed perpendicular to another said bottle the bottles can rotate against each other with continuous point contact, said bottle having been made from a polyester, said polyester comprising from about 0.001 to about 0.025 wt % talc having an average particle size of from about 0.2 μm to about 10 μm, said bottle having a reduced coefficient of friction as compared to a bottle made from said polyester but not containing said talc, and said bottle having a haze value of about 0.1% to about 4%.  
   
   
       84 . A carbonated soft-drink bottle, said bottle having been stretch blown from a preform into a bottle suitable for storage of a carbonated soft-drink, said preform having been made from a polyester, said polyester containing from about 0.001 to about 0.025 wt % talc having an average particle size of from about 0.2 μm to about 10 μm, said bottle having a reduced, coefficient of friction as compared to a bottle made from said polyester but not containing said talc, and said bottle having a haze value of about 0.1% to about 4%.  
   
   
       85 . A straight-walled bottle suitable for use in containing a carbonated soft-drink, said bottle having been blown from a preform, said preform comprising a polyester and talc, said talc being present in an amount of about 0.001 wt % to about 0.025 wt % and having an average particle size of about 0.2 μm to about 10 μm, said bottle having a reduced coefficient of friction as compared to a bottle made from said polyester but not containing said talc, and said bottle having a haze value of about 0.1% to about 4%.  
   
   
       86 . A preform of a drink bottle, said preform comprising a polyester containing talc, said talc being present in an amount of about 0.001 to about 0.025 wt % and having an average particle size of from about 0.2 μm to about 10 μm, said preform capable of being stretch blown into a drink bottle having a reduced coefficient of friction as compared to a bottle made from said polyester but not containing said talc and a haze value of about 0.1% to about 4%.  
   
   
       87 . A preform of a drink bottle, said preform having smooth surfaces such that when placed perpendicular to another said preform, the preforms can rotate against each other with continuous point contact, said preform having been made from a polyester, said polyester comprising from about 0.001 to about 0.025 wt % talc having an average particle size of from about 0.2 μm to about 10 μm, said preform capable of being stretch blown into bottle having a reduced coefficient of friction as compared to a bottle not containing said talc and a haze value of about 0.1% to about 4%.  
   
   
       88 . A carbonated soft-drink bottle made from a composition comprising a polyester or copolyester and from about 0.005 to about 0.025 weight percent of talc having an average particle size of 0.2 to 10 microns, said bottle having a haze value of less than about 4%.