Polyethylene terephthalate alloy having talc

Abstract

A method of forming a polyethylene terephthalate (PET) mixture with talc includes: providing a feed of PET (PET feed); providing a feed of talc (talc feed); mixing the feed of PET with the feed of talc in a mixer at a PET:talc ratio of about 3:1 to about 1:3 to form a PET/talc mixture; and providing the PET/talc mixture as output. A method of forming a Polyethylene Terephthalate (PET) alloy having talc includes: providing a feed of the PET/talc mixture (PET/talc feed); providing a feed of PET (PET feed); mixing the feed of PET with the feed of PET/talc in a mixer to form a PET alloy having from about 1% (w/w) talc to about 50% talc (w/w); and providing the PET alloy as output.

1 . A polyethylene terephthalate (PET) alloy comprising:
 a first portion of PET polymers having a first average molecular weight;   a second portion of PET polymers having a second average molecular weight,
 wherein the first average molecular weight is less than the second average molecular weight; and 
   talc in the PET, wherein the talc is present in an amount of at least 1% and less than 50%.   
     
     
         2 . The PET alloy of  claim 1 , wherein a majority of the talc is associated with the PET polymers of the first portion of PET polymers. 
     
     
         3 . The PET alloy of  claim 1 , wherein the talc is inhomogeneously distributed throughout the PET. 
     
     
         4 . The PET alloy of  claim 1 , wherein the talc is homogeneously distributed throughout the PET. 
     
     
         5 . The PET alloy of  claim 1 , wherein the talc includes talc particles from about 0.25 microns to about 100 microns, or about 0.5 microns to about 75 microns, or about 0.75 microns to about 0.5 microns, or about 1 microns to about 40 microns, or about 5 microns to about 30 microns, or about 10 microns to about 25 microns, or about 15 microns to about 20 microns. 
     
     
         6 . The PET alloy of  claim 1 , wherein the PET alloy includes water at an amount less than 5%, or less than 1%, or less than 0.1%, or a trace amount of water or is devoid of water. 
     
     
         7 . The PET alloy of  claim 1 , wherein the PET alloy has a PET concentration of about 60% to about 99%, about 70% to about 95%, about 75% to about 90%, or about 80%. 
     
     
         8 . The PET alloy of  claim 1 , wherein the PET alloy has a talc concentration of about 1% to about 40%, about 5% to about 30%, about 10% to about 25%, or about 20%. 
     
     
         9 . The PET alloy of  claim 1 , wherein the PET alloy has an intrinsic viscosity of from about 0.5 dL/g to about 0.9 dL/g, or about 0.6 dL/g to about 0.8 dL/g, or about 0.625 dL/g to about 0.7 dL/g, or about 0.65 dL/g to about 0.675 dL/g. 
     
     
         10 . The PET alloy of  claim 1 , wherein the PET alloy has a combination of talc and TiO 2  particles at a combined concentration of about 1% to about 40%, about 5% to about 30%, about 10% to about 25%, or about 20%. 
     
     
         11 . The PET alloy of  claim 1 , wherein the PET alloy has a melting temperature between about 240° C. to about 250° C., or about 245° C. 
     
     
         12 . The PET alloy of  claim 1 , wherein the PET alloy has an oxygen permeation rate of about 3-6 CC/(m 2 -day), +/−25%, 20%, 15%, 10%, 5%, 2%, or 1%. 
     
     
         13 . The PET alloy of  claim 1 , wherein the PET alloy has about 10% (w/w) talc has an oxygen permeation rate of about 3.6 CC/(m 2 -day), +/−25%, 20%, 15%, 10%, 5%, 2%, or 1%. 
     
     
         14 . The PET alloy of  claim 1 , wherein the PET alloy has about 20% (w/w) talc has an oxygen permeation rate of about 5.6 CC/(m 2 -day), +/−25%, 20%, 15%, 10%, 5%, 2%, or 1%. 
     
     
         15 . The PET alloy of  claim 1 , wherein the PET alloy has a crystallization temperature between about 200° C. to about 230° C., or about 210° C. to about 220° C., or about 212° C. 
     
     
         16 . The PET alloy of  claim 1 , further comprising one or more of: a filler, TiO 2 , second polymer, glass pellets, glass fibers, glass particles, sodium ionomers, sodium stearate, nucleating agent, anti-static agents, anti-bacterial agents, foaming agents, stabilizers, UV blockers, acetaldehyde scavengers, pigments, lubricants and other typical additives for plastics polycarbonate, polybutylene terephthalate (PBT) or other polyalkylene terephthalate (PAT), or other component of a PET article of manufacture. 
     
     
         17 . The PET alloy of  claim 1 , wherein the PET alloy is bimodal PET having the first average molecular weight of a first distribution of PET and the second average molecular weight of a second distribution of PET. 
     
     
         18 . The PET alloy of  claim 17 , wherein the PET alloy is devoid of another type of polymer. 
     
     
         19 . A polyalkylene terephthalate (PAT) alloy comprising:
 a first portion of PAT polymers having a first average molecular weight;   a second portion of PAT polymers having a second average molecular weight,
 wherein the first average molecular weight is less than the second average molecular weight; and 
   talc in the PAT, wherein the talc is present in an amount of at least 1% and less than 50%,   wherein the PAT alloy is devoid of another type of polymer.   
     
     
         20 . The PAT alloy of  claim 19 , wherein the PAT alloy is bimodal PAT having the first average molecular weight of a first distribution of PAT and the second average molecular weight of a second distribution of PAT.