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7094861 |
Thermoplastic composition containing polymeric anti-static salt, method of making, and use thereof
Compositions exhibiting water resistant anti-static properties prepared from a thermoplastic polymer and a polymeric anti-static salt is disclosed.
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7091302 |
Process for the preparation of polycarbonate
The invention describes a process for the preparation of polycarbonate. The process includes
(a) transesterifying at least one aromatic dihydroxyaryl compound and a diaryl carbonate in the melt in...
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7084232 |
Method for preparing high molecular weight polycarbonate
The present invention relates to a process for preparing high molecular weight polycarbonate resin, particularly to a process for preparing high molecular weight polycarbonate resin, which conducts...
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7084233 |
Aromatic polycarbonate, process for producing the same, polycarbonate composition, and hollow container obtained from the same
A subject for the invention is to provide a branched aromatic polycarbonate which is excellent in hue and in melt characteristics such as melt strength. The invention provides a branched aromatic...
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7084234 |
Method and device for producing polyesters, copolyesters and polycarbonates
In a process for producing polyester, the esterification of dicarboxylic acids and diols is carried out in at least one reaction stage, the prepolycondensation of the esterification product in at...
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7074878 |
Hydrolytically degradable polymers and hydrogels made therefrom
A water soluble polymer is provided having two or more oligomers linked to each other by hydrolytically degradable carbonate linkages. The polymer can be hydrolytically degraded into oligomers...
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7071285 |
Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatus
An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon containing as an effective component an aromatic polycarbonate resin having a...
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7071283 |
Reactive rectification
The invention relates to a method for producing polycarbonate according to the method for the transesterification of molten mass whereby bis-(hydroxyaryl) compounds (bisphenols) and diaryl...
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7071284 |
Process for the preparation of polycarbonates
An improvement in the continuous two-phase interfacial condensation process for preparing polycarbonate is disclosed. In the process that entails at least one diphenol, phosgene, at least one chain...
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7067610 |
Method for producing polycarbonate
An integrated method for producing aromatic polycarbonate, including the steps of:
(1) making a liquid mixture of acetone and diphenylcarbonate; (2) transporting the liquid mixture of step (1) to...
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7067609 |
Polycarbonate resin for optical disk substrate and optical disk substrate
The present invention relates to a polycarbonate resin that has a viscosity average molecular weight of from 10,000 to 17,000 and has characteristic features in an iron content, a free total phenol...
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7060780 |
Moldings of flame-retardant aromatic polycarbonate resin compositions
A molded article produced by injection-molding a molten form of a flame-retardant aromatic polycarbonate resin composition comprising: 100 parts by weight of an aromatic polycarbonate (A) (Mw:...
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7057005 |
Process for preparing branched polycarbonate
The present invention is a process for producing branched polycarbonate providing for optimum utilization of the branching agent. It was surprisingly found that adding at least a portion of the...
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7045214 |
Method for recycling optical disk, resin composition for forming film, and resin molded article
A method for recycling an optical disk includes crushing a recovered optical disk without further treatment into chips that are used as a raw material of a resin composition for forming a film. The...
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7041774 |
Functionalized zeolite compositions and methods for their preparation and use
Disclosed herein are zeolite compositions comprising structural units of the formulae:
wherein “B” and “C” are spacer groups comprising C 2 to C 20 hydrocarbyl groups; and R 1 and R...
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7041775 |
Method for preparing a polycarbonate oligomer mixture at low temperature for manufacturing polycarbonate
The present invention provides a method of making polycarbonate oligomers, polycarbonate, molded articles formed from polycarbonate, and an apparatus for making polycarbonate. An oligomer mixture...
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7041781 |
Thermoplastic molding compounds with improved surface properties and improved structural homogeneity
Homo- and/or copolymers of one or more ethylenically unsaturated monomers, suitable for the preparation of molded articles that feature improved properties, especially improved fracture properties,...
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7015302 |
Copolymers of monocyclic esters and carbonates and methods for making same
Copolymers having repeating units derived from monocyclic esters or carbonates and certain bicyclic diesters and/or carbonates have controllable rheological properties. The bicyclic diester and/or...
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7005496 |
Production of trimethylene carbonate from poly (trimethylene carbonate) by wiped film reactive evaporation
A method for producing trimethylene carbonate poly(trimethylene carbonate which comprises (a) introducing liquid poly(trimethylene carbonate) and an optional catalyst into a wiped film evaporator...
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6984393 |
Biodegradable elastomer and method of preparing same
This invention relates to thermally crosslinked and photo-crosslinked biodegradable and biocompatible elastomeric polymers. The elastomers can be used for biomedical devices such as needles,...
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6960641 |
Method of making block copolymers by solid state polymerization
A method of preparing block copolymers by solid state polymerization is described. A mixture of a partially crystalline polycarbonate having activated terminal aryloxy groups, for example terminal...
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6930164 |
Telechelic ionomeric polyester and method of preparation thereof
A method of preparing a telechelic ionomeric polyester includes reacting a first diol with a sulfoaromatic carboxylic acid salt to form a sulfoaromatic carboxylate ester salt, and reacting the...
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6919419 |
AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTRO-PHOTOGRAPHIC PHOTOCONDUCTOR, ELECTRO-PHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE
An aromatic block polycarbonate resin is prepared by polymerizing a diphenol compound of formula (2) or (4), a diol compound of formula (1) or (5), and a halogenated carbonyl compound. The diphenol...
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6916899 |
Polycarbonates, polyester carbonates and polyesters having lateral, cycloalkyl-substituted phenols
A process of using of a particularly substituted phenol as a chain terminator of a polymeric resin is disclosed. The chain terminator is a member selected from among ortho-substituted phenol,...
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6900283 |
Method for making stable, homogeneous melt solutions
Stable, homogeneous melt solutions are prepared at temperatures of 200° C. or less from solid mixtures comprising at least one diaryl carbonate, at least one high melting dihydroxy aromatic...
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6896966 |
Articles of manufacture incorporating polyester/polycarbonate blends
This invention relates to thermoplastic article having one or more decorative materials on the surface thereof which is obtained by applying heat and pressure to a laminate wherein said...
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6897282 |
Compositions comprising functionalized polyphenylene ether resins
The invention relates to a method of forming a polyphenylene ether resin containing residual aliphatic unsaturation. A polyphenylene ether is reacted with a capping agent in a solvent to form the...
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6894141 |
Main chain type liquid crystalline polyester, liquid crystalline composition, method for producing liquid crystal film and optical film, and display having optical film
A main chain type liquid crystalline polyester comprises at least two units selected from aromatic diol units, aromtic dicarboxylic acid units, and aromatic hydroxycarboxylic acid units as...
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6894142 |
Highly branched (co)polycarbonates having improved flowability
A process of preparing a branched (co)polycarbonate resin is disclosed. The process entails using at least one compound conforming to formulae 1a or 1b
in which
R 1 , R 2 and R 3 ...
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6891015 |
Solventless preparation of ester-substituted diaryl carbonates
High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of ester-substituted phenols with phosgene in the presence of a phase...
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6887970 |
Method for producing polycarbonates
The invention relates to a continuous method for producing polycarbonates by transesterifying diaryl carbonates with dihydroxyaryl compounds in the presence of quaternary onium compounds. The...
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6887968 |
Process for the recycling of polycarbonates
A process for making a high molecular weight (co)polycarbonate resin is disclosed. The process entails (i) obtaining at least one member selected from the group low molecular weight residue (weight...
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6887969 |
Method and apparatus to make high molecular weight melt polycarbonate
Usually, polycarbonate polymerization is limited by the rate at which inhibitory byproducts, such as phenol and salicylate, can be removed from the reaction. To facilitate the removal of volatile...
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6884864 |
Polycarbonate and resin composition
The present invention relates to a polycarbonate which can be obtained by a melting method and whose loss angle δ and complex viscosity η* (Pa·s) measured under the conditions of 250° C. and an...
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6872798 |
Polycarbonate composite material which can be thermoplastically shaped, methods for the production thereof, use of the same and a flame-proof polycarbonate moulded part
The invention relates to a polycarbonate composite material which can be thermoplastically shaped and which comprises at least two layers. The invention is characterised in that at least one layer...
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6870025 |
Method of polycarbonate preparation
Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol...
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6870013 |
Method for preparation of copolyorganosiloxanecarbonates of high clarity
Copolyorganosiloxanecarbonates are prepared by first preparing an oligomeric aromatic polycarbonate, such as an oligomeric bisphenol A polycarbonate, in the presence of a tertiary amine as the only...
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6864345 |
Process and apparatus for producing polyethylene terephthalate
In a process of producing polyethylene terephthalate by esterification of terephthalic acid with ethylene glycol and polycondensation, the vapors formed are rectified, the liquid phase is...
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6864346 |
Moldable compositions
This invention relates to polymeric thermoplastic moldable compositions comprising poly(alkylene carbonates), which are useful in manufacturing of articles which may be manipulated and shaped by...
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6861482 |
Weatherable, thermostable polymers having improved flow composition
The present invention describes the incorporation of several types of soft-block materials into resorcinol phthalate-co-polycarbonate polymers. In preferred embodiments, the soft-block materials...
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6860972 |
Process for detecting the location of a phase interface
Disclosed herein are processes for detecting the location of an interface between phases. In one embodiment, the process comprises: introducing a reaction mixture into a vessel wherein the reaction...
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6858303 |
Polycarbonate containing diphenyl carbonate and sheets made therefrom
A thermoplastic molding composition comprising polycarbonate and 50 ppm to 300 ppm, in relation to the weight of the composition, of diphenyl carbonate is disclosed. The composition is especially...
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6858759 |
Process for manufacture of bisphenols
A method for the manufacture of bisphenols comprises introducing a combined feed stream comprising a feed stream and a recycle stream into a reactor system comprising at least one reactor...
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6855390 |
Optical data carriers and method for producing the same
A process for the preparation of optical data carriers made of a particualr polycarbonate is disclosed. The polycarbonate is prepared by the phase boundary process that entails reacting at least...
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6855795 |
Catalyst removal process
The present invention provides a process for producing polycarbonates in the presence of one or more alkali metal or alkaline-earth metal catalysts, and subsequently removing the catalyst residues...
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6855794 |
Polycarbonate substrates
Polycarbonate substrates, the preparation of which is based on 1,1-bis-(4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, and their use for producing shaped articles with particularly high purity and...
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6844417 |
Brominated polycarbonate films
Optical articles, including light management films, prepared from brominated polycarbonate material are disclosed. The brominated polycarbonate provides a film exhibiting good light transmittance,...
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6844416 |
Polycarbonates
A polycarbonate comprised of a repeating unit represented by Formula (I)
with R 1 , R 2 , R 3 and R 4 being, for example, alkyl; Ar being, for example, aryl; and m representing the number of...
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6838543 |
Method for producing polycarbonates
Polycarbonates are produced by reacting a monomeric carbonate component with at least one diphenol or dialcohol in the presence of a transesterification catalyst, wherein the molten component is...
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6835797 |
Process for producing oligocarbonates
A continuous process for producing oligocarbonate is disclosed. The process entails in sequence the steps of a) reacting a dihydroxyaryl compound with a diaryl carbonate in the presence of a...
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