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7388067 |
Polyester composition comprising polybutylene terephthalate resin
Polyester compositions and methods to prepare and use such compositions are provided. The polyester compositions include a polybutylene terephthalate resin (PBT) and at least one additive, and have...
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7375177 |
Polymers, polymer compositions and method of preparation
A polymer comprising at least one structural unit derived from a dihydroxy compound of Formula (I)
wherein R 1 is an aromatic divalent functionality having 6 to 60 carbons, R 2 can be the...
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7375166 |
Polymeric blends for optical devices and method of manufacture thereof
A method for manufacturing a film or sheet comprises deforming a polymeric alloy at a temperature effective to impart to the deformed alloy a birefringence retardation of greater than or equal to...
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7371808 |
Polymer treating method and apparatus
A polymer treating method has the steps of: reacting a polymer compound with a reaction agent in a reaction vessel to generate a polymer treatment product; discharging the polymer treatment product...
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RE40274 |
Heat shrinkable polyester film
The present invention provides a heat shrinkable polyester film whose hot water shrinkage along its main shrinkage direction is equal to or greater than 20% when the film is put in hot water of...
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7348398 |
Method for separating transition metals from polymers
The invention relates to a method for separating transition metals from polymers. According to the invention, a solid polymer containing transition metals is treated with an extracting agent, the...
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7348394 |
Methods for preparing transparent articles from biphenol polycarbonate copolymers
A method for producing a transparent article is provided. The method comprises melt transesterifying in the presence of a transesterification catalyst and a monomer mixture to produce a biphenol...
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7345133 |
Branched polycarbonates
A branched polycarbonate and processes for its preparation are disclosed. The polycarbonate contains structural units conforming to
in which R 1 , R 2 , R 3 and R 4 mutually independently...
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7332560 |
Thermoplastic molding compositions having reduced water absorption
A thermoplastic molding composition comprising polycarbonate and at least one (co)polyformal is disclosed. Characterized by its low water absorption the composition is particularly suitable for...
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7329718 |
Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part
The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a...
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7326764 |
Transparent compositions, methods for the preparation thereof, and articles derived therefrom
A reaction product comprises a first polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, a second polyester-polycarbonate comprising a polyester unit and a polycarbonate...
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7326467 |
Polycarbonate-based resin composition for extrusion molding using sizing die and molded product
A polycarbonate-based resin composition for extrusion molding using a siring die, and a molded product produced by extrusion-molding the resin composition using a sizing die, The...
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7323536 |
Transparent compositions, methods for the preparation thereof, and articles derived therefrom
A reaction product comprises a polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, and a transesterification catalyst. The reaction product has a haze of less than 5.0%,...
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7323535 |
Transparent compositions, methods for the preparation thereof, and articles derived therefrom
A reaction product comprises a polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, a polycarbonate polymer, and a transesterification catalyst, wherein the...
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7323503 |
Process for producing ethylene-vinyl alcohol copolymer resin, process for producing pellets and resin pellets
A process for producing an ethylene-vinyl alcohol copolymer resin, including feeding EVOH into an extruder, keeping the temperature of the melting resin in the extruder at 70 to 170° C., adjusting...
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7319133 |
Contact lens extraction/hydration systems and methods of reprocessing fluids used therein
The present contact lens treating systems and methods effectively remove extractable materials from contact lenses, for example, newly formed contact lenses, so that the lenses can be safely and...
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7314909 |
Method of reducing the styrene content of a poly(arylene ether)/polystyrene blend, and articles comprising the resulting thermoplastic resin
A poly(arylene ether)/polystyrene blend may be prepared by melt kneading a carboxylic acid compound, a poly(arylene ether), and a polystyrene to form an intimate blend, and steam stripping the...
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7314907 |
Purified polymeric materials and methods of purifying polymeric materials
A method is disclosed to purify a polymeric material by filtering a melt comprising poly(arylene ether) and poly(alkenyl aromatic) through a melt filtration system. The method provides a filtered...
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7309755 |
Method of producing polycarbonate articles by rotation molding and rotation molded articles made by the method
A method for making a polycarbonate article is described wherein the article is made by rotation molding a melt polycarbonate having a weight average molecular weight from 25,000 to about 36,000....
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7306647 |
Mixed matrix membrane with mesoporous particles and methods for making and using the same
A mixed matrix membrane for separating gas components from a mixture of gas components is disclosed. The membrane comprises a continuous phase polymer with inorganic porous particles, preferably...
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7304121 |
Liquid-crystalline polyester resin and method for producing it
The present invention provides a liquid-crystalline polyester obtainable by a method comprising the steps of: (1) preparing a prepolymer consisting of the repeating units represented by formulae...
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7301000 |
Nucleating agents for polyhydroxyalkanoates
The present invention provides a process for crystallizing a polymer having at least 20 mole percent of hydroxyalkanoate repeat units, comprising admixing the polymer and a compound of the formula...
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7297758 |
Method for extending shelf-life of constructs of semi-crystallizable polymers
This invention relates to a method of extending the shelf-life of constructs, in particular bioabsorbable stents, comprising semi-crystalline polymers by increasing the crystallinity of the polymers.
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7297755 |
Shaped articles from cycloaliphatic polyester compositions
Disclosed are oriented, shaped articles such as, for example, film, fibers, bottles, and tubes, with excellent strength, toughness, clarity, chemical resistance, and UV resistance. The articles can...
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7297753 |
Reduction of permeation through a polymer
A method for reducing the permeation rate of a permeable species through a polymeric material includes identifying a solubility-increasing species in the polymeric material having a reversible...
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7279124 |
Nucleation enhanced polyester and its use in melt-to-mold processing of molded articles
Crystallizable polyester compositions containing an aliphatic polyamide crystallization nucleator exhibit controllable and adjustable crystallization rates upon cooling from the melt and are...
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7271234 |
Polyarylates for drug delivery and tissue engineering
Biocompatible polyarylates of tyrosine-derived diphenol compounds and poly(alkylene oxide) dicarboxylic acids, articles formed therefrom and therapeutic uses are disclosed.
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7259201 |
Flame retardant thermoplastic films and methods of making the same
A film can comprise greater than or equal to about 95 wt % thermoplastic resin and about 0.001 wt % to about 5.0 wt % sulfonate salt, based on a total weight of the film, and have a UL-94 rating of...
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7256250 |
Biodegradable coating
The object of the present invention is a biodegradable polymer network and methods to make it. The polymer network consists of a cross-linked polyester resin, which is composed of hydroxy acid...
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7253246 |
Thermosetting polycarbodiimide copolymer
A thermosetting polycarbodiimide copolymer of the present invention comprises in a molecule thereof, a soft segment containing at least one residue formed by removing opposite functional end groups...
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7250123 |
Composite construction and manufacturing method thereof
A composite construction 1 is obtained by coating the outer periphery of a core material 2 with a shell layer 3 . The core material 2 is composed of a first sintered body that is obtained by...
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7247698 |
Methods for making polyethylene terephthalate (PET) preforms and containers such as food bottles, containers and intermediate preforms obtained
The invention concerns the field of manufacture of PET containers designed in particular for packaging food products, particularly bottles for aerated beverages such as in particular natural and...
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7244813 |
Methods of purifying polymeric material
A method is disclosed to purify a polymeric material by filtering a melt comprising poly(arylene ether) and poly(alkenyl aromatic) through a melt filtration system. The method provides a polymeric...
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7244804 |
Polycarbonate copolymer, resin composition, and molded article
There are provided a polycarbonate copolymer (A) which has excellent light resistance and heat resistance and comprises an aromatic dihydroxy component comprising 5 to 95 mol % of...
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7241817 |
Process for grafting a fluoropolymer and multilayer structures comprising this grafted polymer
The present invention relates to a process for grafting an unsaturated monomer onto a fluoropolymer, having the steps of:
a) melt blending the fluoropolymer with the unsaturated monomer; b)...
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7223359 |
Method of producing an exfoliated polymer-clay nanocomposite through solid-state shear pulverization
A method of producing a polymer-clay nanocomposite comprises providing a supply of polymer-clay mixture, exfoliating the mixture through solid-state shear pulverization in the presence of cooling...
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7220815 |
Sulfonated aliphatic-aromatic copolyesters and shaped articles produced therefrom
Sulfonated aliphatic-aromatic copolyesters and articles made therefrom, and processes for producing the sulfonated aliphatic-aromatic copolyesters and articles are provided. Articles that can be...
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7211641 |
Liquid crystal polycarbonates and methods of preparing same
Liquid crystal polycarbonates are made by forming a reaction mixture containing (a) an activated diaryl carbonate; (b) at least two species of aromatic diols selected from among resorcinol,...
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7208564 |
Branched polyformals and copolyformals their preparation and use
A branched (co)polyformal is disclosed. The (co)polyformal contains structural units conforming to at least one the general formulae (1a) and (1b)
wherein each of -E- and -D- independently of...
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7205375 |
Optical disk substrate and lightguide plate
An optical disk substrate and a light guide plate which are formed from a resin composition comprising 0.1 to 20 parts by weight of compound represented by the following formula (I):
based on...
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7205358 |
Method for producing a extruded ethylene copolymer
The object of the present invention to provide a method for producing a extruded ethylene copolymer that can provide a film having excellent melt tension and fluidity as well as excellent impact...
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7201964 |
Molded polycarbonate articles having improved optical and processing properties
A transparent sheet having improved optical properties is disclosed. The sheet that features a deviation angle α ε (min) according to DIN 52305-A-AS of ≦2.0 and a refracting power D ε (min)...
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7201860 |
Polyamide membrane with improved hydrolytic stability and method for production thereof
The invention relates to a method for producing a hydrolytically stable polyamide membrane having an open-pored, microporous and sponge-like support-layer structure, using a process involving...
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7199210 |
Process for the preparation of polyethylene terephthalate (PET)
A process for the preparation of polyethylene terephthalate by making use of non antimony catalysts is described. The Ti complex catalyst is pre-dispersed in the polymer matrix selected from PET,...
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7199208 |
Polyformals and copolyformals with reduced water absorption, production and use thereof
A thermoplastic molding composition comprising a linear (co)polyformal is disclosed. The (co)polyformal corresponds to formulae (Ia) or (Ib),
in which A independently denotes hydrogen or...
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7198745 |
Method for forming a fibers/composite material having an anisotropic structure
A method for forming fibers/composite material having an anisotropic structure, comprising the steps of mixing an effective amount of fibers with a matrix material to form a deformable mixture...
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7192550 |
Method and apparatus for spinning a web of mixed fibers, and products produced therefrom
A device and method for spinning polymer fibers utilizes one or more independent sources of polymer materials, pumps for feeding polymer material from each of the sources, and a series of...
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7192545 |
Thermal crystallization of a molten polyester polymer in a fluid
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...
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7189796 |
Aromatic polycarbonate resin composition
An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance. The present invention is an aromatic polycarbonate...
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7189441 |
Low intrinsic viscosity and low acetaldehyde content polyester, hollow preforms and containers obtained from said polymer
The invention concerns polyester resins, more particularly polyethyleneterephthalate resins used for making hollow containers, such as bottles for packaging liquid substances, in particular aerated...
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