4324 results about "Polyethylene terephthalate glycol" patented technology

Polymer blends are disclosed that comprise one or more unsaturated olefinic homopolymers or copolymers having at least one functionality capable of entering into condensation reactions; one or more polyamide homopolymers or copolymers; one or more polyethylene terephthalate homopolymers or copolymers obtained using a catalyst system comprising antimony atoms; and one or more transition metal atoms. The inventive blends are useful for packaging, and exhibit improved oxygen-scavenging activity and lower haze compared with blends made using polyethylene terephthalate polymers prepared with antimony catalyst and either the olefinic or the polyamide homopolymers or copolymers, individually.

A multilayer heat-sealable chlorine-free film of relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of polyester resin and at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of a homopolymer of ethylene or a copolymer of ethylene and an alpha-olefin or an ester-containing monomer. In a preferred embodiment, the odor barrier layer is formed of polyethylene terephthalate and adhesive tie layers are interposed between the odor barrier layer and the skin layers, resulting in a multilayer film of five layers. Pouches formed of such multilayer films are also disclosed.

Compositions of matter including articles derived from (a) from 5 to 99.99 wt % of a modified polybutylene terephthalate random copolymer that (1) is derived from polyethylene terephthalate and (2) contains a at least one residue derived from polyethylene terephthalate selected from the group consisting of antimony, germanium, diethylene glycol groups, isophthalic acid groups, cis isomer of cyclohexane dimethanol, trans isomer of cyclohexane dimethanol, sodium benzoate, alkali salts, napthalane dicarboxylic acids, 1,3-propane diols, cobalt, cobalt-containing compounds, and combinations thereof, and (b) from 0.01 to 95 wt. % of a member selected from the group consisting of (1) fillers, (2) a carboxy reactive component, (3) polyethyelene terephthalate, (4) a component including a polycarbonate and an impact modifier. The articles may be derived from various conversion processes, e.g., injection molding processes, extrusion processes, thermoforming processes, melt-blown process.

A method of manufacturing a multilayer or a monolayer plastic container is disclosed. The container has a barrier layer manufactured from (i) a polyester resin, preferably an aromatic polyester resin such as a polyethylene terephthalate, (ii) a polyamide material, preferably an aromatic polyamide material, and (iii) an oxygen scavenging material, preferably a transition method. The present invention also provides containers having a multilayer or a monolayer body. In the preparation of the barrier layer. a preform first is prepared by an injection-molding process wherein a preblend containing a diluent polyester, polyamide material, and an oxygen scavenging material is added to a base polyester during the injection molding process. The preform then is expanded to form a container.

A peelable sealable co-extruded film, comprising: i. a skin layer capable of heat sealing against a rim of a container, to itself, or to another film and adapted to be peeled there from and comprising a hot melt adhesive resin; and ii. a core layer underlying said skin layer and comprising crystalline homopolymer polyethylene terephthalate; and a method for the preparation thereof.

Optical-quality polarized parts and methods for manufacturing the optical parts are disclosed. The optical-quality polarized parts comprise a high impact, lightweight, high optical quality polyurethane construct and a polarizer bonded to the construct. The construct may be a lens substrate wherein the polarizer is integrally bonded at or near the front surface of the lens substrate. A sidefill gasket may be used to support and position the polarizer within a mold cavity for reproducibly forming the optical part. The polarizer may comprise a polyethylene terephthalate film or a laminated polyvinyl alcohol film or wafer. The polarized optical part has improved impact resistance over conventional thermoset resin parts, as well as better optical properties than similarly impact-resistant polycarbonate constructs.

This invention relates to a method of making a bio-based PET packaging and particularly to a method of producing a bio-based PET from at least one bio-based material comprising: a) forming at least one PET component from at least one bio-based material, wherein the at least one PET component is selected from a monoethylene glycol (“MEG”), a terephthalic acid (“TA”), and combinations thereof; (b) processing said bio-based PET component into a bio-based PET.

The invention discloses a flexible current collector for a lithium battery and a preparation method thereof. The flexible current collector comprises a flexible substrate layer, a metal conductive plated layer and a conductive anti-oxidization layer which are combined tightly in sequence, wherein the flexible substrate layer is one of polyvinyl chloride, polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polydimethylsiloxane and polyimide; the thickness of the flexible substrate layer is 1-20 microns; the metal conductive plated layer is one of Cu, Al, Ni, Au and Ag and the thickness of the metal conductive plated layer is 0.1-5 microns; and the conductive anti-oxidization layer is at least one of conductive graphite, graphene, carbon nanotubes and carbon nano-fibers, and the thickness of the conductive anti-oxidization layer is more than 0 and smaller than 1 micron. The flexible current collector disclosed by the invention has high machinability and relatively high thermal stability and anti-oxidization energy; and the quality density of a whole body is small.

Provided herein is a composite, comprising: a polymer host selected from the group consisting of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), and polypropylene (PP), polyurethane, polycaprolactone (PCL), polydimethylsiloxane (PDMS), polymethylmethacrylate (PMMA), and polyoxymethylene (POM); and a guest molecule comprising hyaluronic acid; wherein the guest molecule is disposed within the polymer host, and wherein the guest molecule is covalently bonded to at least one other guest molecule. Also provided herein are methods for forming the composite, and blood-contracting devices made from the composite, such as heart valves and vascular grafts.

A thermoplastic composition such as a polyester composition including polyethylene terephthalate polymers containing glassy carbon, and the preforms, bottles, sheets, rods, tubes, films and other articles made from these compositions. Also, polyester compositions are provided which have a certain individual or combination of properties, including low coefficient of static friction, low coefficient of static friction and low haze or high L* or low positive b* or a combination thereof, and those having low L* and low positive b* at given reheat rates.

A sports shoe includes an upper wherein a majority by weight of the upper is made from a thermoplastic base material and a sole wherein a majority by weight of the sole is made from the same thermoplastic base material. The sole and the upper are individually fabricated and joined to each other. The thermoplastic base material includes at least one of the following materials: thermoplastic polyurethane TPU, polyamide PA, polyethylene terephthalate PET, or polybutylene terephthalate PBT.

The invention discloses a preparation method of a graphene-carbon nanotube compound film based on a three-dimensional network appearance. The method comprises the step of: transferring and stamping graphene and a carbon nanotube onto glass, a tantalum sheet, a silicon chip, a stainless steel plate or a polyethylene glycol terephthalate substrate in the mass ratio (1-10):1 through spraying deposition or vacuum suction filtration, wherein the grapheme is graphene oxide prepared by using an improved Hummers method; and a preparation method of a carbon nanotube solution comprises the following steps of: mixing acids; dispersing surfactants such as sodium lauryl sulfate, sodium dodecyl benzene sulfonate and hexadecyl trimethyl ammonium bromide in an auxiliary way, and the like. The graphene-carbon nanotube compound film prepared by adopting the method has the advantages of adjustable transmission and surface resistance, high uniformity, high stability, simple preparation method process and the like, and can be loaded on a rigid substrate as well as a flexible substrate.

A process for crystallizing a polyester polymer by introducing a molten polyester polymer, such as a polyethylene terephthalate polymer, into a liquid medium at a liquid medium temperature greater than the T_g of the polyester polymer, such as at a temperature ranging from 100° C. to 190° C., and allowing the molten polyester polymer to reside in the liquid medium for a time sufficient to crystallize the polymer under a pressure equal to or greater than the vapor pressure of the liquid medium. A process flow, underwater cutting process, crystallization in a pipe, and a separator are also described.

Strands of molten polyethylene terephthalate (PET) from a PET polycondensation reactor are solidified, pelletized, and cooled only to a temperature in the range of 50° C. to a temperature near the polymer Tg by contact with water. The still hot pellets are conveyed, optionally followed by drying to remove water, to a PET crystallizer. By avoiding cooling the amorphous pellets to room temperature with water and cool air, significant savings of energy are realized.

The invention relates to a figured sea-island super-fine fiber, and a preparation method and a synthetic leather preparing process method using the same, which belong to the technical field of leather and leather manufacture methods. The figured sea-island super-fine fiber is characterized in that the weight percentage ratio of island components of the fiber to sea components of the fiber is 50 percent to 80 percent/50 percent to 20 percent, wherein the island components are polyamide (PA) 6 or polyethylene terephthalate (PET), and the sea components are polyolefins or phospholamban (PLB) or polyvinyl alcohol (PVOH). The preparation method comprises the steps of slice drying and melting, composite spinning, oiling and falling into a barrel, drafting curling and drying cutting. The synthetic leather preparing method comprises the following steps that: 1. the components are sequentially prepared into a single-layer fiber net, a composite layer fiber net, needle-punched non-woven cloth and needle-punched non-weaving cloth; 2.soakage and coagulation are sequentially carried out on the non-weaving cloth, the non-weaving cloth is washed, so that a synthetic leather impregnated substrate is formed, repeated soaking squeezing, azeotropic distillation and drying are sequentially carried out, so the synthetic leather is obtained. The synthetic leather produced by the invention has the advantages of excellent mechanical performance, excellent dyeing performance, excellent dyefastness, better production controllability, economy and environment protection. Compared with natural leather and products of the natural leather, the synthetic leather has the advantages that use performance such as durability, weatherability, antibacterium mothproofing, dyefastness and the like of products is much superior to that of the natural leather and the products of the natural leather.

The present invention is a process for recycling colored polyester. More specifically, colored polyester for recycling is depolymerized by the addition of glycol to form the monomer BHET. The BHET is contacted with activated carbon to remove some colorant. The remaining colorant is extracted with water, alcohol, or glycol to produce white, purified BHET. The white, purified BHET is separated from the extraction solvent (water, alcohol, or glycol) by filtering, decanting, or centrifuging, for example. The purified BHET monomer can be polymerized to polyethylene terephthalate meeting food contact specifications, using known polymerization processes.

A composition comprising:

• • (1) from 50 to 99 wt % of a modified, random copolyetherester containing:
    • (i) a modified, random polybutylene terephthalate copolymer block that is derived from a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers and combinations thereof; and that contains at least one residue derived from the polyethylene terephthalate component; and
    • (ii) a polyalkylene oxide copolymer block that is derived from a polyethylene terephthalate component and polyalkylene oxide glycol, and contains polyalkylene oxide and at least one residue derived from the polyethylene terephthalate component; and
  • (2) from 1 to 50 wt % of a polyester;
  • wherein the copolyetherester, the polyester, and optionally any additives, are present in a total amount of 100 wt %.

The invention discloses an ultraviolet (UV) curing paint and a preparation method and application thereof. The preparation method comprises the following steps: weighting modified SiO2 sol to place in a container, adding water-soluble UV-cured resin, solvent and additive in turn, stirring for 10min, then adding photoinitiator, and stirring for 5min to obtain the UV curing paint, wherein the contents of the water-soluble UV-cured resin, the solvent, the additive and the photoinitiator are 10-60%, 7-33%, 0.1% and 2% respectively. The UV curing paint prepared by the method of the invention has the advantages of inorganic materials such as high hardness, high wear resistance, scratch resistance and good thermal stability and also has the advantages of organic materials such as adhesivity and relative flexibility; and the UV curing paint is suitable to be used as the protective coatings on the surfaces of all kinds of optical plastic products such as polyester which contains polycarbonate, polymethylmethacrylate, polyethylene terephthalate (PET) and the like. By adopting the UV curing paint of the invention, the defects of the existing UV curing paint in the aspects of hardness, wear resistance, scratch resistance and light transmittance, can be overcomed to a certain extent.

This invention relates to articles made of polyester, preferably polyethylene terephthalate (PET), having coated directly to at least one of the surfaces thereof one or more layers of thermoplastic material with good gas-barrier characteristics, and novel methods of making such articles. Preferably the barrier-coated articles take the form of preforms coated by at least one layer of barrier material and the containers blow-molded therefrom. Such barrier-coated containers are preferably of the type to hold beverages such as soft drinks, beer or juice. The preferred barrier materials have a lower permeability to oxygen and carbon dioxide than PET as well as key physical properties similar to PET. The materials and methods provide that the barrier layers have good adherence to PET, even during and after the blow molding process to form containers from preforms. Preferred barrier coating materials include poly(hydroxyamino ethers). In one preferred method, preforms are injection molded then barrier-coated immediately thereafter.

The invention disclosed herein relates to relates to foamed thermoplastic material objects and articles of manufacture having an internal layered cellular structure, as well as to methods of making the same. In one embodiment, the invention is directed to a multi-layer foamed polymeric article of manufacture, comprising: a non-laminated multi-layer thermoplastic material sheet, wherein the multi-layer thermoplastic material sheet has first and second discrete outer layers sandwiching a plurality of discrete inner foamed layers, and wherein the two outer layers and plurality discrete inner foamed layers are integral with one another. The thermoplastic material may be a semi-crystalline polymer such as, for example, PET (polyethylene terephthalate), PEEK (polyetheretherketone), PEN (polyethylene napthalate), PBT (polybutylene terephthalate), PMMA (polymethyl methacrylate), PLA (polylactide), polyhydroxy acid (PHA), thermoplastic urethane (TPU), or blends thereof. The two outer layers may be unfoamed skin layers having smooth outer surfaces, and the discrete inner foamed layers may be microcellular.

A process for fabricating a composite vessel includes the steps of: A) preforming (e.g., by winding fiber and at least one thermoplastic substance onto a thermoplastic liner) a thermoplastic shell which has at least one opening for access to the interior; B) extruding a circular cross section of a fluid parison of thermoplastic material (which preferably is chosen to have a melting point lower than that of the thermoplastic shell) into the interior of the thermoplastic shell through the opening; C) in a mold, applying at least one force (such as gas under pressure) which tends to urge the fluid parison toward the interior walls of the thermoplastic shell (which may be preheated prior to introduction into the mold) such that the fluid parison imparts heat to the thermoplastic shell; D) continuing step C) until the thermoplastic shell and the fluid parison consolidate to form a composite vessel; E) cooling the vessel until it is solidified; and F) removing the vessel from the mold. For some composite vessels, prior to step C), an insert may be introduced into the interior of the parison and positioned in alignment with the opening in the thermoplastic shell such that the insert is rendered integral with the composite vessel during step D). Suitable thermoplastic materials include polyethylene, polypropylene, polybutylene terephthalate and polyethylene terephthalate. The resulting composite vessel exhibits superior mechanical and aesthetic properties.