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7622415 |
Polymerization catalyst composition for ethylene oxide and proces for the production of poly(ethylene oxide) with the same
Provided are a polymerization catalyst composition for ethylene oxide which can give polyethylene oxide having a molecular weight lower than that of the prior art and a relatively narrow molecular...
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7524923 |
Suzuki polycondensation for preparing aryl polymers from dihalide monomers
Methods for synthesizing aryl polymers, and uses for such polymers, are provided.
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7511113 |
Oligomeric hydroxy arylether phthalonitiles and synthesis thereof
An aromatic ether oligomer or polyaromatic ether comprising the formula:
O—Ar n ;
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7481959 |
Method for controlling haze in an article comprising a polymer composition
A method for controlling haze in an article comprising a polymer composition, said method comprising providing a polymer composition comprising less than 25 parts per million alkali metal halide;...
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7462675 |
Thermoplastic copolymer of tetrafluoroethylene and perfluoromethyl vinyl ether and medical devices employing the copolymer
An improved elastomeric material is described comprising an essentially noncross-linkable amorphous copolymer of tetrafluoroethylene (TFE) and perfluoromethyl vinyl ether (PMVE) which is both a...
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7442759 |
Water-soluble polythiophene polymers
The invention provides a water-soluble polymer having formula I:
where R 1 and R 2 are independently —H, -alkylCO 2 A, —(CH 2 ) n -aryl-(CH 2 ) n CO 2 A, —(CH 2 ) n -heterocycle-(CH 2 )...
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7439317 |
Amorphous polyester chip and method for production thereof, and method for storage of amorphous polyester chip
An amorphous polyester chip having superior processing ability is characterized by a moisture content of not more than 300 ppm and a fine particle content of not more than 500 ppm. A preferred...
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7365146 |
Substituted polyphenylenes via supported transition metal catalysis
Substituted polyphenylenes and methods for producing such substituted polyphenylenes using supported transition metal catalysis are provided.
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7342085 |
Synthesis of oligomeric cyanate esters
A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with...
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7309758 |
Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications
A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the...
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7301003 |
Method of preparing polymers having terminal amine groups
The present invention is directed to methods of preparing linear polymers such as polyalkylene oxides containing a terminal amine in high purity. One preferred method includes reacting a...
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7276574 |
Process for producing vinyl polymer
The present invention provides a method for producing a vinyl polymer including the steps of polymerizing a vinyl monomer by atom transfer radical polymerization with a transition metal complex as...
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7265196 |
Controlled crosslinked polyaryletherketone material with improved properties and a process by producing the same
The present invention relates to a controllable crosslinking polyaryletherketone with improved properties such as stiffness, heat resistance, and stability as shown by any one of the following...
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7241855 |
Method for the manufacture of polyesters
A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a...
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7238771 |
Dibenzodiazocine polymers
Dibenzodiazocine polymers, methods for producing dibenzodiazocine polymers, products formed from dibenzodiazocine polymers, and uses for such dibenzodiazocine polymers are provided.
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7226987 |
Aromatic polymer phosphonic acid derivative and process for production the same
Provided is an aromatic polymer phosphonic acid derivative in which a phosphonic acid derivative group is directly bound to aromatic ring. Said aromatic polymer phosphonic acid derivative can be...
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7223829 |
Polyketone solution
A solution of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein 90 wt % or more of said copolymer comprises carbon monoxide units and olefin units, and a solvent is an...
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7217780 |
Polyether ketone and method of producing the same
There are disclosed, a polyether ketone having a primary particle size of 50 μm or less; and a method of producing a polyether ketone by a desalting polycondensation, which contains a step of...
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7217781 |
Polyphosphazenes including ionic or ionizable moieties and fluorine-containing moieties
A polyphosphate polymer which includes both (i) ionic or ionizable moieties; and (ii) fluorine-containing moieties. Such polymers may be used as matrices for pharmaceuticals, as multilayer coatings...
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7189795 |
Poly(arylene ether)s bearing grafted hydroxyalkyls for use in electrically conductive adhesives
A poly(arylene ether) polymer includes polymer repeat units of the following structure:
—(O—Ar 1 —O—Ar 2 ) m —(O—Ar 3...
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7179878 |
Poly(arylene ether) polymer with low temperature or UV crosslinking grafts and dielectric comprising the same
Poly(arylene ether) polymers are provided having polymer repeat units of the following structure:
wherein Ar 1 , Ar 2 , Ar 3 , and Ar 4 are identical or different aryl radicals, m is 0 to 1, n...
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7138484 |
Method for producing polymerized hydrocarbon
A method for producing a polymerized hydrocarbon includes a step of a dehalogenation of a halogenated hydrocarbon with a magnesium-diene complex. Low-molecular-weight compounds, such as dimers or...
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7135537 |
Sulfonimide-containing poly(arylene ether)s and poly(arylene ether sulfone)s, methods for producing the same, and uses thereof
The present invention is directed to sulfonimide-containing polymers, specifically sulfonimide-containing poly(arylene ether)s and sulfonimide-containing poly(arylene ether sulfone)s, and processes...
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7129323 |
Bimolecular nucleation methods for thermoplastics
Specific methods of inducing high nucleation rates in thermoplastics, such as polyolefins, and particularly, though not necessarily, polypropylenes, through the introduction of two different...
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7115706 |
Polyether polymers and compositions derived therefrom
Polyether polymers providing a backbone substituted at intervals with electron stabilizing groups containing electron withdrawing groups are described. The polymers capture electrons and are...
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7098299 |
Separation of contaminants from polyester materials
The present invention is generally directed to a process for separating and recovering post-consumer polyester from various contaminant materials. The invention can be utilized to separate...
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7074727 |
Process for improving dielectric properties in low-k organosilicate dielectric material
Low-k organosilicate dielectric material can be exposed to a series of reagents, including a halogenation reagent, an alkylation reagent, and a termination reagent, in order to reverse degradation...
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7074877 |
Resin for use in manufacturing wet friction materials, manufacturing method thereof and wet friction material
A resin for use in manufacturing wet friction materials which contributes to enhancing durability of manufactured wet friction materials, a manufacturing method thereof, and a wet friction material...
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7067608 |
Process for preparing branched polyarylene ethers
Disclosed is a process for preparing branched polyarylene ether polymers by (A) providing a reaction mixture comprising (i) a polyfunctional phenol compound of the formula Ar(OH) x wherein x≧3...
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7049393 |
Techniques for the preparation of highly fluorinated polyethers
A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit:
wherein n provides a molecular weight up to about 30,000 to 100,000, X represents one of following...
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7001978 |
Unsaturated ester substituted polymers with reduced halogen content
Polymers of the formula
wherein x is 0 or 1, R 1-4 are alkyl, aryl, arylalkyl, or alkylaryl groups, X 1-4 are halogens, a′, b′, c′, and d′ are 0–4, UE is an unsaturated ester group,...
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6987150 |
Modified sulfonamide polymers
The invention provides secondary sulfonamide polymers, wherein some, most, or all of the sulfonamido protons have been replaced with a substituent other than hydrogen. The invention also provides...
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6927273 |
Process for preparing substituted polyarylene ethers
Processes for preparing polymers of the formula
wherein m is 0 or 1, X is chlorine, bromine, or iodine, and n, e, and f are each, independently of the others, integers wherein e may be 0 and n...
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6900286 |
Process for preparation of conducting polyaniline
The present invention relates to a new process for preparation of conducting polyaniline. More particularly the present invention relates to a simple process for preparation of conducting...
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6881814 |
Borate modified phenolic resin for insulation material
Phenolic resins and processes of making these phenolic resins that are useful for making binders for mineral wool insulation products are disclosed. The addition of a boron salt early in the...
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6878797 |
Synthesis and applications of polymaleimide
A process for producing alkali metal polymaleimide salts by alkaline hydrolysis of maleimide polymers prepared by polymerization of maleimide monomers in the presence of a metal oxide and alcohol...
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6872861 |
Process for preparing polyfluoroalkylithium compounds
The invention relates to a process for preparing polyfluoroalkyl-lithium compounds by deprotonation of polyfluoroalkyl compounds by means of lithium bases.
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6833430 |
Process for the production of polyacetylene derivatives
A process for the production of polyacetylene derivatives by which polyacetylene derivatives having an ability to discriminate asymmetry can be easily obtained in a few steps and in high yield and...
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6833433 |
Method for producing aliphatic oligocarbonate diols
A process for the production of aliphatic oligocarbonate diols is disclosed. The optionally catalyzed high yield process entails the multistage transesterification of aliphatic diols with dimethyl...
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6828414 |
Process for producing aromatic polyethers with high molecular weights
A process for producing an aromatic polyether having a high molecular weight, small dispersion of the molecular weight, excellent in the heat resistance as well as the impact resistance and...
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6806343 |
Method of preparing a stable, low pH phenolic resin
A phenol-formaldehyde resole resin for use as a binder for glass fibers is acidified to a pH of 3 or less after base-catalyzed resinification. An increase in actual solids is observed compared with...
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6790933 |
Low protein natural latex articles
The present invention is directed to a process for producing a powder free natural latex article and the articles produced by the process. In one embodiment, the process of the present invention...
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6787631 |
Polyarylene sulfide resin
This invention relates to a novel polyarylene sulfide resin or a resin composition comprising said polyarylene sulfide resin moldable with reduced generation of flash. The polyarylene sulfide resin...
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6770680 |
Method for recycling pet components and device for carrying out said method
A process for the recycling of PET flakes from comminuted PET bottles, wherein the flakes are subjected to a washing treatment, are treated for at least 20 minutes in at least one washer at an...
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6762221 |
Use of naphthalenesulfonic acid-formaldehyde condensates products as drying aids
Naphthalenesulfonic acid-formaldehyde condensates are used as assistants in the drying of aqueous polymer dispersions. Also described is a process for preparing polymer powders by drying, using...
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6747124 |
Process for working up emulsion polymers
A process for working up polymer components prepared by emulsion polymerization is disclosed. The process is characterized in that coagulation of the aqueous polymer latex present after emulsion...
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6730770 |
Method of preparing a higher solids phenolic resin
A phenol-formaldehyde resole resin for use as a binder for glass fibers is acidified with sulfamic acid to a pH of 3 or less after base-catalyzed resinification. An increase in actual solids...
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6716956 |
Process for preparing polyarylene ethers
Disclosed is a process for preparing a polymer of the formula wherein x is an integer of 0 or 1, A is one of several specific groups, such as B is one of several specified groups, such as or...
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6710158 |
Methods for making polyester bottle resins having reduced frictional properties
The invention is a polyester resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and...
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6706843 |
Method for separating and recovering dimethyl terephthalate and ethylene glycol from polyester waste
For separation and recovery of dimethyl terephthalate (DMT) and ethyiene glycol (EG) from polyester waste containing foreign materials, the polyester waste is treated in EG containing a polyester...
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