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8183336 |
Poly (arylene sulfide)
In a process for producing a poly(arylene sulfide) by polymerizing a sulfur source and a dihalo-aromatic compound in the presence of an alkali metal hydroxide in an organic amide solvent, the...
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8138233 |
Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET)
In one embodiment, the invention relates to a two step process in which a 1,4-butane diol component reacts with a polyethylene terephthalate component under conditions that depolymerize the...
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8129498 |
Polymeric medium
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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8088834 |
Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET)
The invention relates to a process for making modified polybutylene terephththalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in...
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8063174 |
Polybenzimidazole compounds
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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8053607 |
Method for producing polyether-polyol having narrow molecular weight distribution
A method for producing a polyether-polyol having a narrow molecular weight distribution, which comprises carrying out selective fractional extraction of the low-molecular weight component from a...
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8053550 |
Process for the purification from heavy metals of vinyl chloride polymers
Process for the purification of a vinyl chloride polymer (PVC) comprising at least one compound of a heavy metal, according to which: (a) the PVC is dissolved in a water-miscible polar organic...
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8013109 |
Industrially viable method for the production of polycarbynes, polymeric precursors to diamond and diamond like ceramics
This invention is related to a new method of synthesizing polycarbynes. These polymers are known to produce diamond and diamond like ceramics upon heating, by plasma processing, and chemical vapour...
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7956118 |
Method and preparation of chemically prepared toners
A method of making polymeric particles having a controlled size and size distribution, and in particular a method for the preparation of chemically prepared toners, via evaporative limited...
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7947801 |
Polyfluorene method
A method of synthesizing a poly(9,9-disubstituted-fluorene) includes reacting a 9,9-disubstituted-fluorene with an alkyl lithium in the presence of a catalytic amount of a nickel amine complex. The...
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7923518 |
Nitrile rubbers
The present application provides novel nitrile rubbers comprising repeating units of at least one α,β-unsaturated nitrile, at least one conjugated diene and optionally one or more further c...
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7910688 |
Recycling superabsorbent polymer fines
A process is described for recycling superabsorbent polymer fines into a process that includes treating the superabsorbent polymer fines with caustic and a polymerization step for making the...
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7902263 |
Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET)
The invention relates to a process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component. In one embodiment, the invention relates to a two...
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7902324 |
Initiator
An initiator for cationic polymerization comprises a salt of a protic acid as well as a protic acid. The molar ratio of protic acid to salt is in the range from 1:0.01 to 1:2000. The initiator is...
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7893122 |
Chemical process for recycling polyethylene terephthalate (PET) waste
The present invention relates to a process for chemical recycling of PET waste that comprises, among other stages, a saponification reaction stage, wherein PET waste particles are reacted with...
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7868131 |
Methods 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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7868103 |
Method for producing polybutadiene
A method for producing a polybutadiene, which comprises subjecting 1,3-butadiene to cis-1,4 polymerization, and subsequently subjecting a resultant in the resulting polymerization system to...
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7847056 |
Method for producing fluorine-containing (meth)acrylate polymer and polymer produced by such method
An object of the invention is to provide a fluorine-containing (meth)acrylate polymer readily at a low cost without using any special polymerization facilities. Thus, the invention provides a...
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7825213 |
Method of making a metal terephthalate polymer
A method of making a metal-terephthalate polymer from polyester ethylene terephthalate includes reacting polyester ethylene terephthalate with a metal compound in a non-aqueous melt environment at...
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7816052 |
Portion conductive electrolyte, method of preparing the same, electrode for fuel cell, method of manufacturing the electrode, and fuel cell including the same
A proton conductive electrolyte including a polymerized polyurethane, polyethylene(metha)acrylic acid (PEAA), and a cross-linking agent mixture; a method of preparing the same; an electrode...
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7807117 |
Recycle of electrical equipment
The present invention addresses a problem with conventional techniques for recycling electrical equipment that have a hardened epoxy resin and electroconductive material where a catalyst is...
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7799836 |
Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET)
The invention relates to a process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in...
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7781561 |
Processes of synthesizing aromatic amine-based benzoxazine resins
Processes of synthesizing aromatic amine-based benzoxazine resins are disclosed. The processes provide new routes for synthesizing benzoxazine from aromatic diamines or multifunctional aromatic...
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7772361 |
Polybenzimidazole compounds
A PBI compound that includes imidazole nitrogens, at least a portion of which are substituted with an organic-inorganic hybrid moiety. At least 85% of the imidazole nitrogens may be substituted....
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7763702 |
Synthesis of polyphosphazenes with sulfonimide side groups
The invention relates to sulfonimide bearing phenolic compounds and the use of those compounds to produce polyphosphazenes functionalized by one or more of those compounds alone, or in combination...
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7754848 |
Poly (arylene sulfide) and production process thereof
In a process for producing a poly(arylene sulfide) by polymerizing a sulfur source and a dihalo-aromatic compound in the presence of an alkali metal hydroxide in an organic amide solvent, the...
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7732503 |
Recycle of electrical equipment
The conventional techniques for recycling an electrical equipment including a hardened epoxy resin and electroconductive material has involved conventional problems that a catalyst is degraded to...
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7723420 |
Synthesis and polymerization of oligomeric divinyl-terminated aromatic ether-containing resins
An oligomer having the formula: Ar1 and Ar2 are each an aromatic group or a bisphenol residue. At least one of Ar1 and Ar2 is the aromatic group. The value of m is zero or one, and n is a positive...
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7687602 |
Deproteinized natural rubber, its composition and use thereof
There are provided natural rubber free from substances which cause Type I allergy, a rubber compositions having good processability and physical properties which comprises the natural rubber and...
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7645856 |
Ether nitrile co-polymers containing sulfonic acid groups for PEM application
Ether nitrile co-polymers containing sulfonic acid groups, including wholly aromatic poly(aryl ether ether nitrile)s containing sulfonic acid groups (SPAEEN)s, and poly(phthalazinone ether ketone...
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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—Arn; wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a d...
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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 R1 and R2 are independently —H, -alkylCO2A, —(CH2)n-aryl-(CH2)nCO2A, —(CH2)n-heterocycle-(CH2)nCO2A, or —(CH2...
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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—Ar1—O—Ar2)m—(O—Ar3—O—Ar4)n— where Ar1, Ar2, Ar3, and Ar4 are identical or different aryl radicals, m ...
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