Abstract: The present invention provides a wholly aromatic liquid crystalline polyester resin having an excellent heat resistance while having an extremely low dielectric tangent.

Abstract: The present invention provides a thermally decomposable binder that achieves a reduced residual carbon after sintering, and that can be subjected to a dewaxing treatment at a relatively low temperature in a non-oxidative atmosphere. More specifically, the present invention provides an aliphatic polycarbonate that has a structure obtained by neutralizing a Brønsted acid with an organic onium salt in a side chain.

Abstract: The present invention addresses the problem of providing; a novel bisphenol compound having an indoline skeleton; and a novel aromatic polycarbonate which uses this bisphenol compound as a starting material dihydroxy compound. The above-described problem is able to be solved by an aromatic polycarbonate that contains a repeating unit represented by general formula (2).

Abstract: The invention generally relates to functional polymers and hydrogels. More particularly, the invention provides versatile monomers and polymers with well-defined functionalities, e.g., polycarbonates and poly(ester-carbonates), compositions thereof, and methods for making and using the same. The invention also provides cytocompatible poly(ethylene glycol)-co-polycarobonate hydrogels (e.g., crosslinked by copper-free, strain-promoted “click” chemistry).

Abstract: An interfacial process for preparing a poly(aliphatic ester-carbonate) includes providing an initial polymerization reaction mixture comprising an aliphatic C6-20 dicarboxylic acid, a bisphenol, an alkali hydroxide, and optionally a catalyst in a solvent system comprising water and an immiscible organic solvent, adding an initial portion of a carbonyl dihalide over a first time period while maintaining the reaction at a first pH from 7 to 8; and adding a second portion of the carbonyl dihalide over a second, subsequent time period while maintaining the reaction pH at a second pH from 9 to 12, to provide a product polymerization mixture, wherein the amount of alkali hydroxide in the initial polymerization reaction mixture is effective to increase the fraction of the first time period at a measured pH of 7 to 8 compared to the same reaction mixture with a higher amount of alkali hydroxide in the initial polymerization mixture.

Abstract: The purpose of the present invention is to provide a polycarbonate resin which has high fluidity and with which mold fouling such as mold deposits, etc., can be reduced. The polycarbonate resin according to the present invention has a terminal structure represented by general formula (1), and a viscosity-average molecular weight of 10,000-18,000, wherein the contained amount of low-molecular-weight carbonate compounds having a molecular weight of 1,000 or less contained in the polycarbonate resin is less than 1 mass %.

Abstract: Polymeric BODIPY dyes including light harvesting BODIPY unit-comprising multichromophores are provided. In some embodiments, the dyes are polymeric tandem dyes that include a light harvesting BODIPY unit-comprising multichromophore and an acceptor chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. The polymeric tandem dyes may be covalently linked to a specific binding member. Also provided are methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule using compositions including the polymeric tandem dyes. Kits and systems for practicing the subject methods are also provided.

Abstract: The present invention makes it possible to provide a polycarbonate copolymer including structural units represented by general formula (K) and structural units represented by general formula (1). (In general formula (K), R represents H, CH3 or CH2CH3.) (In general formula (1), Q represents a C5 or higher aliphatic hydrocarbon group optionally including a hetero atom.).

Abstract: In an embodiment, a method of dewatering a wet polymer composition comprises introducing the wet polymer composition via a polymer feed location to a powder conveying section of an extruder; wherein the wet polymer composition comprises greater than or equal to 1 wt % of water based on the total weight of the wet polymer composition; venting the water through a conveying section vent to form a dry polymer composition; melt kneading the dry polymer composition in a melt kneading section of the extruder to form a polymer melt; conveying the polymer melt in a melt conveying section of the extruder; and adding an additive in one or both of the powder conveying section and the melt conveying section.

Abstract: A method comprising: providing a powder composition including at least one ultrafine, spherical thermoplastic polymer powder having a glass transition temperature (Tg) of at least 150 degrees C.; and powder bed fusing the powder composition to form a three-dimensional article.

Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced low molecular weight component, has no or markedly reduced chlorine-containing compounds, has a high loose bulk density and is easy to handle. This purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500-10000, has a low molecular weight component of less than or equal to 5.0 area % in high performance liquid chromatography measurement, and has a loose bulk density of greater than or equal to 0.21 g/cm3.

Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound.

Abstract: A process for producing polycarbonate comprising contacting a dihydroxy capped carbonate and a diaryl carbonate in a reaction zone in the presence of a polymerization catalyst under polymerization conditions to produce polycarbonate. The dihydroxy capped carbonate is a carbonate with a dihydroxy compound on each end, and it is formed by the reaction of a dihydroxy compound with a dialkyl carbonate. The dihydroxy compound is a dihydroxy aromatic compound.

Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced low molecular weight component, has no or markedly reduced chlorine-containing compounds, has a high loose bulk density and is easy to handle. This purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500-10000, has a low molecular weight component of less than or equal to 5.0 area % in high performance liquid chromatography measurement, and has a loose bulk density of greater than or equal to 0.

Abstract: A process for producing polycarbonate comprising: a) contacting a dialkyl carbonate with a dihydroxy compound in an oligomerization zone in the presence of an oligomerization catalyst under oligomerization conditions to form a first intermediate; and b) contacting the first intermediate with a diaryl carbonate in a polymerization zone in the presence of a polymerization catalyst under polymerization conditions to produce the polycarbonate wherein the molar ratio of dihydroxy compound to dialkyl carbonate in the oligomerization zone is at least 2:1.

Abstract: It is an object of the present invention to provide a method for obtaining a resin composition in which coloration is suppressed. According to an embodiment, provided is a method for producing a resin composition, including: (a) obtaining a resin by polymerization of a resin raw material containing a compound represented by formula (1) below and (b) obtaining a resin composition by mixing an additive into the resin, wherein a polymerization temperature T1 in step (a) falls within the range of 230° C.<T1<250° C., and a mixing temperature T2 in step (b) falls within the range of 250° C.?T2<280° C.

Abstract: The disclosure concerns healable polycarbonate resins comprising at least about 5 mol % of disulfide units, articles comprising the healable polycarbonate resin, and methods of activating the healable polycarbonate resin by exposing the healable polycarbonate resin to heat or radiation.

Abstract: A method of producing a product, for example a stretch blow moulded container having a metallic or pearlescent appearance, comprises selecting a mass, for example a container preform, comprising a thermoplastic polymer which incorporates a carrier polymer and stretching the thermoplastic polymer during production of said product, for example from said mass. Said carrier polymer is suitably polydimethylsiloxane and the mass may be made in a process which comprises contacting a thermoplastic polymer with a liquid formulation comprising carrier polymer and colourant.

Abstract: Provided is a resin composition that exhibits excellent strength and fluidity. According to one embodiment, the provided resin composition contains a resin containing a repeating unit derived from a compound represented by general formula (1), and also contains a polymer having an end structure represented by general formula (A) and/or contains a compound represented by general formula (B).

Abstract: Disclosed is a polycarbonate resin including a constitutional unit represented by Formula (1). The resin provides a molded article having a sufficiently low Abbe number and excellent durability under high temperature and high humidity. R1 to R4 are a hydrogen atom or a substituent having ?p of less than ?0.15, R5 to R7 represent a substituent, Ar11 and Ar12 represent an aryl or heteroaryl group, and Ar13 is an aromatic fused ring group.

Abstract: Disclosed is a polycarbonate resin having a constitutional unit represented by Formula (1). The resin provides a molded article having a sufficiently low Abbe number and having high abnormal dispersibility may be molded. Y1 and Y2 are an oxygen, sulfur, nitrogen or carbon atom; Z is an atomic group for forming a 5- to 7-membered ring; R5 to R8 represent a substituent; and Ar11 and Ar12 represent an aryl or heteroaryl group.

Abstract: A method of preparing a partially crystalline polycarbonate powder, including: dissolving an amorphous polycarbonate in a halogenated alkane solvent to form a solution; combining the solution with a crystallizing non-solvent that is miscible with the halogenated alkane solvent, under high shear mixing conditions effective to form a partially crystalline polycarbonate precipitate having a D90 particle size of less than 150 micrometers; an average particle diameter of less than or equal to 100 micrometers, or an average particle diameter of 0 to 100 micrometers; and at least 20% crystallinity, or at least 25% crystallinity, or 25 to 35% crystallinity.

Abstract: A method of preparing a poly(ester-carbonate) includes contacting an aqueous solution including a dicarboxylic acid with a first solution including phosgene and a first organic solvent in a tubular reactor to provide a first reaction mixture. A dihydroxy aromatic compound, the corresponding dialkali metal salt of the dihydroxy aromatic compound, or a combination comprising at least one of the foregoing, water, and a second organic solvent are combined to provide a second reaction mixture. The method further includes introducing the first reaction mixture, the second reaction mixture, and a second solution comprising phosgene to a tank reactor, wherein the tank reactor has a first pH of 7 to 10. The pH is optionally raised to 9 to 11 to provide a third reaction mixture including the poly(ester-carbonate). Poly(ester-carbonate)s prepared according to the method described herein are also disclosed.

Abstract: The present invention provides a polycarbonate resin containing a repeating unit represented by formula (A) in the amount of 1-99.5 wt %, the polycarbonate resin also containing an oligomer having a specific structure in a total amount that constitutes a content of 2.5 wt % or lower. (In formula (A), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group, or a C1-6 alkyloxy group).

Abstract: Processes are described for producing a polycyclic polyether polyol having a hydroxyl functionality of 1.5 to 6 and a number average molecular weight of 200 to 12,000 Da. The processes comprise alkoxylating a polyol starter comprising predominantly a polycyclic polyol with an alkylene oxide in the presence of a DMC catalyst.

Abstract: A polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance, which has, as main constituent units, (A) constituent units each represented by the following formula (1): wherein, in the formula (1), each of R1 and R2 is independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms and optionally containing an aromatic group, or a halogen atom, (B) constituent units each represented by the following formula (2): wherein, in the formula (2), each of R3 and R4 is independently an alkyl group having 1 to 6 carbon atoms or a halogen atom, and X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, and (C) constituent units each represented by the following formula (3): wherein, in the formula (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen

Abstract: Provided is a method of producing a polycarbonate-polyorganosiloxane copolymer, including a step (Q) of causing a polycarbonate oligomer and at least one of polyorganosiloxanes represented by the following general formulae (i) to (iii) to react with each other in an organic solvent, in which in the step, a solid content weight x (g/L) of the polycarbonate oligomer in 1 L of a mixed solution of the organic solvent and the polycarbonate oligomer, a concentration y (mass %) of the polyorganosiloxane in the polycarbonate-polyorganosiloxane copolymer to be obtained, and a chain length n of the polyorganosiloxane satisfy specific conditions.

Abstract: A binder resin composition comprising an aliphatic polycarbonate resin represented by the formula (1): and an end-capped aliphatic polycarbonate resin represented by the formula (2): wherein each of X and Y, which may be identical or different, is a group having at least one functional group selected from a carboxy group, an ester group, a carbamate group, a silicate group, an isocyanate group, an ether group, an acetal group, and a halogen atom at its end; and an inorganic particle-dispersed paste composition containing the resin composition. The binder resin composition of the present invention can be used in general molded articles, optical materials such as films, fibers, optical fibers, and optical disks, thermally decomposable materials such as ceramic binders, and lost foam casting, medicinal materials such as drug capsules, additives for biodegradable resins, main components for biodegradable resins, and the like.

Abstract: A laser weldable composition comprising a polyester component, 5 to 50 weight percent of a filler; and 10 to 30 wt. % of a poly(ester-carbonate) copolymer comprising carbonate units and ester units of the formula (I) wherein: T is a C2-20 alkylene, a C6-20 cycloalkylene, or a C6-20 arylene; R1 and J are each independently (a) a bisphenol A divalent group, and (b) a C16 or higher divalent group (b1), (b2), or (b1) and (b2), wherein (b1) is a phthalimidine divalent group, and (b2) is a third divalent group, wherein the C16 or higher divalent group (b1), (b2) or a combination of (b1) and (b2) is present in an amount of 40 mol % to 50 mol % based on the total moles of the bisphenol A divalent groups and the C16 or higher divalent group; and the composition, when molded into an article having a 2.0 mm thickness, provides a near infrared transmission at 960 nanometers of greater than 50% and a thermal resistance according to HDT 1.8 MPa flat (ISO 75/Af) is greater than 160° C.

Abstract: Embodiments of the present disclosure describe initiating systems comprising an activator and an initiator, wherein the activator includes an alkyl borane or alkyl aluminum, wherein the initiator includes an organic cation and either an alkali metal or a compound containing an active protic hydrogen. Embodiments of the present disclosure further describe methods of making a polycarbonate comprising contacting a cyclic monomer and carbon dioxide in the presence of an activator and an initiator to form a polycarbonate, wherein the catalyst is one or more of an alkyl borane and alkyl aluminum, wherein the initiator includes an organic cation and either an alkali metal or a compound containing an active protic hydrogen.

Abstract: In an embodiment, a continuous method of forming a bisphenol A oil comprises forming the bisphenol A oil by mixing a molten bisphenol A and water; wherein the bisphenol A oil comprises 10 to 30 wt % water based on a total weight of the bisphenol A oil and is at a temperature of 100 to 140° C.; flowing at least a portion of the bisphenol A oil through an inline densitometer and measuring a real-time density and a real-time temperature of the bisphenol A oil; determining a real-time concentration of the bisphenol A oil based on said real-time density and said real-time temperature.

Abstract: The present invention relates to block cocondensates of polysiloxanes and dihydroxydiarylcycloalkane-based (co)polycarbonates and also to a process for preparing such block cocondensates. The invention further relates to the use of these block cocondensates for producing mouldings and extrudates.

Abstract: A poly(ester-carbonate) copolymer comprises carbonate units of the formula (I); and ester units of the formula (II) wherein: T is a C2-20 alkylene, a C6-20 cycloalkylene, or a C6-20 arylene; and R1 and J are each independently (a) a bisphenol A divalent group and (b) a C16 or higher divalent group (b), wherein the C16 or higher divalent group is present in an amount of 40 to 50 mol %; the ester units are present in an amount of 40 to 60 mol %; the poly(ester-carbonate) copolymer has a weight average molecular weight of 18,000 to 24,000 Daltons; and a sample of the composition has a glass transition temperature of 210° C. to 235° C. as determined by differential scanning calorimetry (DSC) as per ASTM D3418 with a 20° C./min heating rate; and a melt viscosity of less than 1050 Pa-s at 644 sec-1 and 350° C., determined according to ISO 11443.

Abstract: The present disclosure relates to a dimer that includes a first hydroxyl-functionalized naphthalene group and a second hydroxyl-functionalized naphthalene group, where the first hydroxyl-functionalized naphthalene group and the second hydroxyl-functionalized naphthalene group are connected by a bridging group. The present disclosure also relates to a polymer synthesized using the dimer, as well as methods for synthesizing both the dimer and the polymer.

Abstract: A preparing method of an aliphatic polycarbonate is provided to synthesize oligomer monomers by a transesterification reaction of carbonic acid dialkyl esters and aliphatic diols with accelerants in an atmosphere of a protective gas, and generate an aliphatic polycarbonate polymer by a polycondensation reaction of the oligomer monomers in a condition of high temperature and low pressure. According to the disclosure, environmentally friendly compounds with low boiling points and low costs are utilized as the accelerants to substitute the enzyme or acid-base catalysts to prepare aliphatic polycarbonate polymers in the prior art, and the cost is reduced; meanwhile, in the process of generating the aliphatic polycarbonate polymers, the accelerants can be removed from the reaction system along with the pressure reduced in the reaction system. The synthesis system is simple; moreover, the aliphatic polycarbonate obtained by the preparing method provided by the disclosure has merits such as superior colors.

Abstract: A reinforced resin composition may include a polycarbonate, a functionalizing agent, and an inorganic filler that has been functionalized with the functionalizing agent, the functionalized inorganic filler being present in an amount ranging from 1 to 25 percent by weight of the resin composition. The reinforced resin may exhibit a melt flow index of 25 or less, when measured at a load of 1.2 kg, after allowing the resin to remain at a temperature of 300° C. for 10 minutes. A method of reducing thermal degradation of a reinforced polycarbonate material may include introducing into said polycarbonate material at least one inorganic filler functionalized with a functionalizing agent, such that the reinforced resin exhibits a melt flow index of 25 or less, when measured at a load of 1.2 kg, after allowing the resin to remain at a temperature of 300° C. for 10 minutes.

Abstract: The invention relates to a process for preparing an aromatic carbonate, comprising reacting a dialkyl carbonate or an alkyl aryl carbonate with an aryl alcohol or an alkyl aryl carbonate, resulting in an aromatic carbonate which is an alkyl aryl carbonate or a diaryl carbonate.

Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

Abstract: The present invention can provide an injection-molded body for a vehicle, the injection-molded body having a terminal structure that is indicated by general formula (1) and containing a polycarbonate resin that has a viscosity-average molecular weight of 18,000-24,000.

Abstract: Provided are: a polymer composition, as an eco-friendly material, comprising a post consumer material (PCM) resin and a bio-based resin; a molded article; and a method for manufacturing the same. The polymer composition according to an embodiment comprises a thermoplastic resin containing polycarbonate, a post consumer material (PCM) resin, a bio-based resin, and a core-shell type elastomer.

Abstract: Polymerization processes comprising melt polymerizing a carbonate and a dihydroxy compound in the presence of an amount of a beta organic catalyst so as to give rise to a polycarbonate product, wherein the amount of beta organic catalyst comprises at least one onium salt and also comprises triphenyl phosphonium oxide (TPPO), and wherein the TPPO represents less than about 0.3 weight % of the sum of the weights of the at least one onium salt and the TPPO in the amount of beta organic catalyst.

Abstract: The invention relates to polycarbonate compositions with an improved thermal behavior and improved slip characteristics, achieved by the use of oxidized, acid-modified polyethylene waxes.

Abstract: The invention relates to a method for producing polyurethane soft foam by reacting an isocyanate component with a component which is reactive towards isocyanates. The component which is reactive towards isocyanates comprises a mixture of at least one polyether carbonate polyol and a polyether polyol as the constituents. In the component which is reactive towards isocyanates, the total proportion of polyether carbonate polyols is =20 wt. % to =80 wt. % and the total proportion of polyether polyol is =20 wt. % to =80 wt. %, based on the total weight of the provided polyols. The invention further relates to a polyurethane soft foam produced using said method.

Abstract: In an embodiment, a melt polymerization process comprises melt polymerizing a carbonate compound and a dihydroxy compound in the presence of a catalyst composition to form a polycarbonate; and adding an end-capping agent comprising a mono-phenolic compound to the polycarbonate, wherein the adding of the end-capping agent comprises at least one of adding the end-capping agent just upstream of a final polymerization unit, adding the end-capping agent directly into the final polymerization unit, and adding the end-capping agent downstream of the final polymerization unit; wherein a molecular weight of the polycarbonate increases by less than 10% downstream of the final polymerization unit.

Abstract: The present invention is directed to a copolymer of a monomer selected from the group consisting of 1,3-butadiene and isoprene, and a monomer of formula I wherein R1 is phenylene, or a linear or branched alkane diyl group containing 2 to 10 carbon atoms, or a combination of one or more phenylene groups and one or more linear or branched alkane diyl groups containing 1 to 10 carbon atoms; R2 and R3 are independently phenyl or a linear or branched alkyl group containing 1 to 10 carbon atoms, or one of R2 and R3 is hydrogen and the other is phenyl or a linear or branched alkyl group containing 1 to 10 carbon atoms, or R2 and R3 taken together with the nitrogen atom represent a nitrogen containing heterocyclic group containing from 4 to 12 carbon atoms; and R4 is hydrogen or a linear or branched alkyl group containing 1 to 10 carbon atoms. The invention is further directed to a rubber composition including the copolymer, and a pneumatic tire containing the rubber composition.

Abstract: Systems and methods for the production of phenol and acetone from cumene oxidation products. One method includes reacting cumene and an oxidizing agent to produce a cumene oxidation product including cumene hydroperoxide and dimethyl benzyl alcohol, converting at least a portion of the dimethyl benzyl alcohol to cumene hydroperoxide by reacting the at least a portion of the dimethyl benzyl alcohol with hydrogen peroxide in both an organic phase and an aqueous to produce a converted cumene oxidation product, and cleaving the converted cumene oxidation product to produce an output product including one or more of phenol, acetone, and alpha-methylstyrene.

Abstract: Provided is a multilayer body excellent in terms of heat resistance, low water absorbency, shock resistance, surface hardness, and adhesion, including: at least one layer made of a polycarbonate resin (A) whose main repeating units include a unit (a-1) represented by the following formula: and a unit (a-2) represented by the following formula: (wherein R1, R2, R3, and R4 are each a hydrogen atom or a C1-5 monovalent alkyl group), the unit (a-1) and the unit (a-2) being in a molar ratio (a-1/a-2) of 32/68 to 70/30; and at least one layer made of an aromatic polycarbonate resin (B).

Abstract: The present invention relates to polysiloxane-polycarbonate block cocondensates derived from a continuous melt transesterification process comprising polysiloxane blocks of the formula (1) and polycarbonate blocks having recurring units of the formula (2) having improved rheological properties and good mechanical properties as well as to mouldings and extrudates made from these polysiloxane-polycarbonate block cocondensates and wherein the polysiloxane-polycarbonate block cocondensate has a siloxane domain distribution (diameter of siloxane domains) from 200 nm to 1 ?m measured by atomic force microscopy and light microscopy which is in the range of 0.01%-2.5%, based on the total number of siloxane domains.

Abstract: This invention relates to a process for making phenolic fatty acid compounds having a reduced phenolic ester content. The invention also relates to method for chemically bonding a phenolic resin with a non-phenolic polymer (e.g., a synthetic fabric). The method comprises contacting a phenolic fatty acid compound with a non-phenolic polymer to introduce a hydroxy phenyl functional group into the non-phenolic polymer; and reacting the hydroxy phenyl functional group contained in the non-phenolic polymer with a phenolic resin or a phenolic crosslinker composition capable of forming a phenolic resin, to chemically bond the phenolic resin with the non-phenolic polymer. The invention is particularly useful for making a synthetic fabric-reinforced article, such as synthetic fabric-reinforced rubber article, circuit board substrate, or fiberglass.

Abstract: The present invention encompasses surface active agents useful in liquid or supercritical CO2 applications. The surface active agents comprise compounds containing a hydrocarbon segment and an aliphatic polycarbonate segment: The invention also provides methods of making the surface active agents and of using them in supercritical CO2 applications.