Abstract: The present invention relates to compositions comprising blends of alkenyl aromatic polymers such as styrenic polymers (i.e. PS and HIPS) and bio-based or biodegradable polymers (i.e. PLA, PGA, PHA, PBS, PCL) compatibilized with styrene-based copolymers (i.e. styrene-ethylene-butylene-styrene (SEBS) block copolymers, maleated SEBS, styrene-maleic anhydride (SMA) copolymer, styrene-methyl methacrylate (SMMA) copolymer) or a mixture of two or more styrene-based copolymers such as SEBS and SMA. These novel compositions can be extruded and thermoformed to produce very low density food service and consumer foam articles such as plates, hinged lid containers, trays, bowls, and egg cartons with good mechanical properties.

Abstract: This invention provides a cost effective process and new Janus dendrimers where at least two dendrons are attached at the core (with or without a connector group) and where at least two of the dendrons have different functionality. Preferred are those Janus dendrimers where at least one dendron is a PEHAM dendron. Thus these Janus dendrimers are heterobifunctional in character and use unique ligation chemistry with single site functional dendrons, di-dendrons and multi-dendrons. Also included are Janus dendrons which may be used as intermediates to make the Janus dendrimers or to further react with another reactive moiety.

Abstract: A method of synthesizing polyester toner resins comprises: polycondensing polycarboxylic acids, polyols and free fatty acids to form low molecular weight polyester resins with alkenyl group or hydroxyl group or a combination of both; wherein at least one of said polycarboxylic acids, said polyols or said free fatty acids derive from natural oils; crosslinking the polyester via alkenyl group with radical initiator and vinyl monomer or via hydroxyl group with diisocyanate to generate polyester of higher molecular weight and melting point; obtaining a first fraction with a molecular weight ranged between 3000 and 15000 and a second fraction with a molecular weight larger than 15000; and combining said first fraction with said second fraction to form said polyester toner resins.

Abstract: A poly(arylene ether)-polysiloxane multiblock copolymer is prepared by the reaction of a hydroxy-diterminated poly(arylene ether), a hydroxyaryl-diterminated polysiloxane, and an aromatic diacid chloride. This synthesis overcomes disadvantages of known syntheses of poly(arylene ether)-polysiloxane block copolymers. The poly(arylene ether)-polysiloxane multiblock copolymer is useful for improving the melt processibility of poly(arylene ether) compositions.

Abstract: A proton-conducting polymer comprises a main chain and a plurality of branched side chains extending radially therefrom. The branched side chains are each bonded to a proton-conducting salt at the end. In the proton-conducting polymer, the salts can be circumscribed by a virtual circle having a center on the cross-sectional center of the main chain such that a radial direction of the virtual circle is perpendicular to a longitudinal direction of the main chain. Thus, the proton-conducting polymer has a substantially cylindrical structure, and the salts are located on the peripheral wall of the substantially cylindrical structure. Protons are transferred between the adjacent salts, so that a conduction channel is formed on the peripheral wall of the cylindrical structure.

Abstract: The present invention provides a resin composition with favorable melt fluidity, sliding characteristics, toughness, mechanical strength, etc. The present invention is directed to the resin composition containing an aromatic polyamide imide resin (A) that is obtained with the moisture content in the reaction system at 100 to 5000 ppm during the reaction to polymerize an aromatic tricarboxylate anhydride and a diisocyanate and for which the reduced viscosity in N,N-dimethyl acetamide at 30° C. is 0.15 to 0.40 dL/g, and a polyarylene sulfide resin (B).

Abstract: A polymer is characterized by a repeat unit represented by Structural Formula (I), or a copolymer thereof. A crosslinked polymer characterized by a repeat unit represented by Structural Formula (II), (III), (IV) or (V), or a copolymer thereof, wherein at least one such repeat unit of a first polymer strand is crosslinked with at least one repeat unit of a second polymer strand by at least one bridging unit, the first and second polymer strands and the repeat unit being components of the crosslinked polymer.

Abstract: The present invention relates to a method of preparing a polymer composition, the method comprising melt mixing an aliphatic condensation polymer with a cyclic ester of general formula (I) where X is an optionally substituted aliphatic hydrocarbon having 2 or more carbon atoms present in the cycle.

Abstract: The present invention provides a foam comprising (a) a polylactic acid resin, (b) at least one thermoplastic resin selected from a polyolefin resin and a polystyrene resin, and (c) a block copolymer of a vinyl aromatic compound and a conjugated diene, wherein a ratio of (a) to (b) by weight (a/b) is 80/20 to 20/80, and the foam comprises 0.5 to 20 parts by weight of (c) with respect to 100 parts by weight of (a) and (b) in total.

Abstract: Embodiments of polylactide composites comprise a polylactide, and a polymerized natural oil dispersed inside the polylactide.

Abstract: Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides.

Abstract: An object of the present invention is to provide (a) a polyimide precursor solution which is curable at low temperatures (not more than 200° C.) and which has excellent long-term storage stability, (b) a photosensitive resin composition, a photosensitive resin film, a thermosetting resin composition, and a polyimide insulating film, each of which is obtainable from the polyimide precursor solution and each of which is preferably usable as an insulating material for electric and electronic purposes, and (c) a printed wiring board provided with the insulating film. The above object is achievable by use of a polyimide precursor composition solution containing at least a partially imidized polyimide precursor having a urethane bond.

Abstract: A blend of a multiply branched lactic acid polymer of one steric configuration with a linear lactic acid polymer of the opposite steric configuration has different and more useful properties than either component alone.

Abstract: A foam comprising the reaction product of one or more multifunctional acrylates with one or more multifunctional aceto- or cyano-acetate compounds in the presence of a base and a blowing agent.

Abstract: Compositions that include one or more compounds according to formula I: wherein Y is —S—, or —SO2—; R1 and R1? are independently chosen from H, —CH3, or a combination thereof; R2 is H, —CH3, or, and m and n are independently chosen from 0, 1, 2, 3, and 4; and one or more photochromic compounds.

Abstract: A process comprises depolymerizing, with 1,4-butane diol, a first polymer comprising a polyethylene terephthalate component in the presence of at least one second polymer selected from the group consisting of polyvinyl chlorides, polyvinylidene chlorides, polyamides, polylactic acid, and combinations thereof to produce a molten mixture; and polymerizing the molten mixture under conditions sufficient to form a modified polybutylene terephthalate copolymer. The modified PBT comprises (a) at least one polyethylene terephthalate component residue, and (b) a member selected from the group consisting of (i) the at least one second polymer selected from the group consisting of polyvinyl chlorides, polyvinylidene chlorides, polyamides, polylactic acid, and combinations thereof; (ii) the at least one residue derived from the second polymer; and (iii) combinations thereof.

Abstract: Hydroxy-functional polyester-polyurethane dispersions comprising a reaction product of: (a) at least one, at least difunctional polyol component; (b) at least one ionizable compound having at least one acid group and at least one functional group capable of reacting with isocyanate groups, the at least one functional group selected from the group consisting of mono-, di-, and trihydroxycarboxylic acids, hydroxysulfonic acids, aminosulfonic acids, and aminocarboxylic acids; (c) at least one acid anhydride; and (d) at least one, at least difunctional polyisocyanate component; methods for preparing such dispersions; compositions containing such dispersions; and uses thereof.

Abstract: The present invention provides a resin composition containing a resin (a1) containing a siloxane bond and having a number-average molecular weight of 500 or more and 300,000 or less, and a resin (a2) containing no siloxane bond and having a number-average molecular weight of 1,000 or more and 300,000 or less.

Abstract: The present invention is directed to two component coating compositions that cure under ambient conditions and more particularly to those having low VOC (volatile organic content) that are suitable for use in automotive refinish and Original Equipment Manufacturing (OEM) applications. The coating composition includes crosslinkable and crosslinking components, wherein the crosslinkable component includes a low polydispersity, low molecular weight copolymer having on an average 2 to 25 functional groups, such as hydroxyl, carboxyl, acetoacetoxy, primary and secondary amine, and epoxy. The copolymer is polymerized from a monomer mixture that includes one or more non-functional acrylate monomers and one or more functional methacrylate monomers provided with the functional groups. The crosslinking component includes polyisocyanate, polyamine, ketimine, melamine, epoxy, polyacid or a combination thereof. The invention is also directed to coating produced from the coating composition.

Abstract: Methods of making polyoxymethylene compositions having a polyoxymethylene polymer having a Mean Biobased Content of at least 20 percent determined with ASTM-D6866 method.

Abstract: This disclosure provides a medical device and a method of forming the medical device. The medical device comprises a coating comprising a type-one polymer and a type-two polymer. The type-one polymer comprises at least two different blocks, at least one L1 block with the formula ; and at least one L2 block with the formula Medical devices comprising these polymers, mixtures of these polymers with therapeutic agents, and methods of making these polymers and mixtures are within the scope of this disclosure.

Abstract: A thermoplastic resin composition production method wherein melt-kneading is performed in a stretched flow when producing a thermoplastic resin composition as specified in the paragraph (I) or (II) below: (I) a thermoplastic resin composition comprising a Thermoplastic resin (A) and a Resin (B) with a reactive functional group; (II) a thermoplastic resin composition comprising a Thermoplastic resin (A), a Thermoplastic resin (C) that is different from the Thermoplastic resin (A), and a Compound (D) with a reactive functional group.

Abstract: This invention provides compositions comprising a hydrophobic drug, a biocompatible micelle forming polymer, and a biocompatible low molecular weight, water-soluble polymer. Also provided are devices for injection of such compositions and for the use of such compositions to form hydrophobic drug containing micelles within the body of a patient.

Abstract: The present invention relates to compositions comprising blends of alkenyl aromatic polymers such as styrenic polymers (i.e. PS and HIPS) and bio-based or biodegradable polymers (i.e. PLA, PGA, PHA, PBS, PCL) compatibilized with styrene-based copolymers (i.e. styrene-ethylene-butylene-styrene (SEBS) block copolymers, maleated SEBS, styrene-maleic anhydride (SMA) copolymer, styrene-methyl methacrylate (SMMA) copolymer) or a mixture of two or more styrene-based copolymers such as SEBS and SMA. These novel compositions can be extruded and thermoformed to produce very low density food service and consumer foam articles such as plates, hinged lid containers, trays, bowls, and egg cartons with good mechanical properties.

Abstract: The present invention relates to a composition comprising a polyester, a copolyester ether and an oxidation catalyst, wherein the copolyester ether comprises a polyether segment comprising poly(tetramethylene-co-alkylene ether). The composition has oxygen scavenging properties and produces articles having low haze. Other embodiments of the present invention disclosed herein are articles made from the composition and methods to make such articles.

Abstract: It is an object of the present invention to provide a resin composition having improved heat resistance (high crystallinity) and transparency without impairing rigidity intrinsic to a polylactic acid based resin, a molded body formed from the resin composition, and a new polylactic acid based resin used in the resin composition. A polylactic acid based resin (A) according to the present invention is characterized by having a specific structural moiety and a weight average molecular weight (Mw) of 5,000 to 1,000,000. A polylactic acid based resin composition according to the present invention is characterized by containing the above-described polylactic acid based resin (A).

Abstract: A thermoplastic polymer blend is disclosed comprising a polyester, a polycarbonate, and a minor amount of a flow enhancer selected from non-sulfonated phosphonium salts. Optionally, impact modifiers and other conventional additives are included.

Abstract: The present invention is directed to two component coating compositions that cure under ambient conditions and more particularly to those having low VOC (volatile organic content) that are suitable for use in automotive refinish and Original Equipment Manufacturing (OEM) applications. The coating composition includes crosslinkable and crosslinking components, wherein the crosslinkable component includes a low polydispersity, low molecular weight copolymer having on an average 2 to 25 functional groups, such as hydroxyl, carboxyl, acetoacetoxy, primary and secondary amine, and epoxy. The copolymer is polymerized from a monomer mixture that includes one or more non-functional acrylate monomers and one or more functional methacrylate monomers provided with the functional groups. The crosslinking component includes polyisocyanate, polyamine, ketimine, melamine, epoxy, polyacid or a combination thereof. The invention is also directed to coating produced from the coating composition.

Abstract: A process for preparing polyamides by reacting starting monomers selected from dicarboxylic acids and diamines or salts of the dicarboxylic acids and diamines, amino carboxylic acids, amino nitriles, lactams and mixtures thereof, in the presence or absence of water and/or of functionalizing compounds capable of attaching to carboxyl or amino groups, comprises performing the reaction in an ionic liquid as solvent without use of additional accelerants which, based on the monomers, are present in an amount of more than 50 mol %.

Abstract: A binder resin for toner includes a hybrid resin of a crystalline resin (X) and an amorphous resin (Y), having a peak molecular weight of 30,000 or larger, and an amorphous resin (Z) having a peak molecular weight of smaller than 30,000.

Abstract: Thermoplastic polymer particles directly cross-linked together or cross-linked via a separate and independent polymer network to form an inter-penetrating network are disclosed herein, along with methods of manufacturing and use as interleaf tougheners of pre-pregs and composite articles.

Abstract: A package for microelectronic circuits includes a frame made of a high molecular weight plastic material, such as a liquid crystal polymer (LCP), attached to a flange, or leadframe. The plastic material is injection molded to the flange. Initial polymerization of the plastic material can occur in a liquid state and results in an intermediate material having an initial melting temperature. After the frame is injection molded, the frame is heated and undergoes further (secondary) polymerization, thereby lengthening polymer chains in the plastic material. These longer polymer chains have higher molecular weight, and the resulting final material has a higher melting temperature, than the intermediate material. The resulting ultra-high molecular weight polymer can withstand high temperatures, such as those encountered during soldering. Thus, after the further (secondary) polymerization, a die can be soldered to the flange, without damaging the plastic frame.

Abstract: Process for the preparation of polyamidoimide resins, in which the centers of the polyamidoimide resins which are reactive toward moisture are reacted with one or more compounds of the following general H—X—R1, in which, where X=oxygen, R1 is a straight-chain or branched alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or an aralkyl group and, where X?NR2, R1 is a straight-chain or branched alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or an aralkyl group or an aryl group and R2 is a straight-chain or branched alkyl group having 1 to 6 carbon atoms, an aralkyl group or an aryl group, or R1 and R2 together form a cycloalkyl radical having 4 or 5 methylene groups, it being possible for a methylene group to be replaced by oxygen or an NR3 group, and R3 being a straight-chain or branched alkyl group having 1 to 3 carbon atoms, and polyamidoimide coating materials which are prepared by the process.

Abstract: Poly(propylene fumarate) is copolymerized with poly(caprolactone) diol to produce a block copolymer of poly(propylene fumarate) and poly(caprolactone). The biocompatible and bioresorbable block copolymer of poly(propylene fumarate) and poly(caprolactone) is useful in the fabrication of injectable and in-situ hardening scaffolds for tissue and/or skeletal reconstruction. The block copolymer can be crosslinked by redox or photo-initiation, with or without an additional crosslinker. Thus, the copolymer is both self-crosslinkable (without the use of any crosslinkers) and photocrosslinkable (in the presence of photons such as UV light).

Abstract: An improved curable formaldehyde-free binding composition is provided. Such curable composition comprises the reaction product of a polyanhydride and a polyol crosslinker and a lower molecular weight anhydride. Initially, the polyanhydride is modified through reaction with a polyol (e.g., a glycol or an alkanolamine) and subsequently is grafted with the lower molecular weight anhydride (e.g., maleic anhydride) to form a water-soluble or water-dispersible curable reaction product. The composition is well suited for binding fibrous materials (e.g., a mat of glass fibers) or for bonding together non-fibrous materials. The binder composition displays an advantageous viscosity so as to facilitate a flowable application with ease combined with an adequately high molecular weight to satisfactorily undergo service as a binder following curing even when harsh environmental conditions (e.g., hot humid air) are encountered for a prolonged period of time.

Abstract: An oxygen-scavenging composition is provided that includes an oxygen-scavenging polymer and a catalyst. The oxygen-scavenging polymer, which in preferred embodiments is suitable for use in packaging articles, includes a base polymer having a backbone, and an unsaturated side chain attached to the backbone. In one embodiment, the unsaturated side chain comprises includes at least one aliphatic carbon-carbon double bond or two or more carbon-carbon double bonds.

Abstract: Poly(lactic acid) blends having a relatively high heat distortion temperature can be prepared by simple blending of PLA polymers of opposite stereoforms, followed by processing, e.g. by injection molding, under specific conditions of temperature and pressure, so as to produce a blend which, on differential scanning calorimetry, exhibits two peaks within the melting range of the stereocomplex. Moreover, by careful selection of these conditions of temperature and pressure, it is possible to use PLA polymers of significantly higher molecular weights than previously thought possible.

Abstract: A group of polymers comprising a plurality of polyolefin chains and polar polymer chains and having a multi-branched structure such as a block structure, a graft structure and a star-shaped structure is produced efficiently by polymerizing or reacting a combination of various polar monomers and their polymers i.e. polar polymer chains by using a functional group-containing polyolefin as a macroinitiator, a macromonomer or a reactive polymer. The resulting multi-branched polymer has a specific shape such as a block structure, a graft structure or a star-shaped structure, and has properties of both the polyolefin and polar polymer, thus exhibiting useful performance in various uses in films and compatibilizing agents as a novel polyolefin-based polymer.

Abstract: The invention provides a novel thermoplastic polymer comprising at least one polyalkylene oxide block. It relates to a process for preparing the thermoplastic polymer and to an application of this polymer as a hydrophilicity and/or antistatic modifier, especially in polyamide compositions. These compositions are particularly suitable for the manufacture of yarns, fibres and filaments.

Abstract: Multi-armed, monofunctional, and hydrolytically stable polymers are described having the structure wherein Z is a moiety that can be activated for attachment to biologically active molecules such as proteins and wherein P and Q represent linkage fragments that join polymer arms polya and polyb, respectively, to central carbon atom, C, by hydrolytically stable linkages in the absence of aromatic rings in the linkage fragments. R typically is hydrogen or methyl, but can be a linkage fragment that includes another polymer arm. A specific example is an mPEG disubstituted lysine having the structure where mPEGa and mPEGb have the structure CH3O—(CH2CH2O)nCH2CH2— wherein n may be the same or different for polya- and polyb- and can be from 1 to about 1,150 to provide molecular weights of from about 100 to 100,000.

Abstract: [PROBLEMS] To provide a photosensitive resin composition which has excellent photosensitivity and gives a cured product reduced in warpage and excellent in flexing properties, adhesion, pencil hardness, solvent resistance, acid resistance, heat resistance, resistance to gold plating, etc. [MEANS FOR SOLVING PROBLEMS] A urethane resin (A) soluble in aqueous alkali solutions and curable with active energy rays which is obtained by reacting a diisocyanate compound (a) with a tetrabasic acid dianhydride (b) to obtain a compound (E), reacting the compound (E) with a hydroxylated compound (c) having an unsaturated group and optionally with a hydroxylated compound (d) other than the compound (c) to obtain a compound (F), and further reacting hydroxy groups of the compound (F) with a diisocyanate compound (e).

Abstract: Personal care compositions comprising a polymer-bound UV absorber are described that provide enhanced properties, including customizable UV spectrum protection, broad-spectrum UV spectrum protection, water resistance, and labile UV stabilization. The polymer comprises anhydride functionality, such as maleic anhydride or a derivative thereof, and the UV absorber contains at least one hydroxyl, primary amine, or secondary amine group. The personal care compositions may be used to treat and/or protect against burns, cancers, erythema, lentigo (“liver spots”), keratotic lesions, wrinkles, and cellular changes of the skin; and/or color changes, embrittlement, lack of luster, tangles, split ends, and/or unmanageability of the hair.

Abstract: A sulfonated poly(arylene sulfone) contains an unsaturated bond. A cross-linked material may be formed from the sulfonated poly(arylene sulfone), and a clay nanocomposite may include the sulfonated poly(arylene sulfone) or the cross-linked material. A fuel cell includes the clay nanocomposite.

Abstract: Ultraviolet light stabilized copolyetherester compositions that comprise at least one nanoparticulate mineral selected from titanium dioxide, cerium oxide, and zinc oxide and at least one organic ultraviolet light stabilizer. Articles formed from the compositions are also disclosed.

Abstract: Lactam polymers has been modified with sodium borohydride (NaBH4) to yield lactam polymers bearing hydroxyl functional groups. These functional groups are useful for the covalent attachment of reactive groups, fluorescent probes, antimicrobial agents, bioactive factors, and drugs. The resulting as components for medical devices, specifically ophthalmic devices and more specifically contact lenses. Hydrogels based on these polymers are also useful for biomedical applications in the areas of drug delivery, tissue engineering, and implantable devices.

Abstract: The present invention relates to a continuous, multicellular, hollow carbon fiber wherein the fiber structure includes a substantially hollow fiber and multiple internal walls defining multiple integral internal hollow fibers such that the fiber structure comprises a honeycomb-like cross section.

Abstract: The invention relates to a supramolecular polymer containing units which are linked by hydrogen bonds, said units being monomers of prepolymers comprising at least one functional group selected from the functional groups (1) and (3) and a second functional group (5) wherein A denotes oxygen, sulphur or NH and X is any unit; the hydrogen bonds in the supramolecular polymer being formed between two identical or different functional groups chosen from the functional groups (1) to (5). The inventive polymers can be used alone, i.e. in the form of a composition which is essentially made from said polymers and, optionally, stabilizers, antioxidants, etc. or in the form of a mixture with other polymers or other products.

Abstract: The present invention pertains to copolymers having one or more polyisobutylene segments and one or more biodegradable polymer segments, to methods of making such copolymers, to medical articles that contain such copolymers, and to methods of making such medical articles. According to certain aspects of the invention, copolymers are provided, which comprise a plurality of polyisobutylene segments and a plurality of biodegradable polymer segments. According to certain aspects of the invention, copolymers are provided, which comprise urethane linkages, urea linkages, amide linkages, ester linkages, anhydride linkages, carbonate linkages, linkages commonly described as “click” chemistry linkages, and combinations of two or more types of such linkages.

Abstract: A composition comprises, from 5 to 90 wt. % of a modified poly(butylene terephthalate) copolymer, wherein (i) the modified poly(butylene terephthalate) copolymer is derived from a first polymer comprising a poly(ethylene terephthalate) component selected from the group consisting of poly(ethylene terephthalate) homopolymers, poly(ethylene terephthalate) copolymers, and combinations thereof, in the presence of a second polymer selected from the group consisting of polyvinyl chlorides, polyvinylidene chlorides, polyamides, polylactic acid, and combinations thereof, and wherein (ii) the modified poly(butylene terephthalate) copolymer comprises at least one poly(ethylene terephthalate) component residue and a member selected from the group consisting of a second polymer selected from the group consisting of polyvinyl chlorides, polyvinylidene chlorides, polyamides, polylactic acid, and combinations thereof at least one residue derived from the second polymer, and combinations thereof; from 5 to 90 wt.

Abstract: The present invention is related to a polymer comprising terminal sulfonic acid groups, which has a high ionic conductivity and good structural stability, does not decompose even under low humidity conditions, and is inexpensive to produce. Furthermore, the present invention is related to a polymer electrolyte and a fuel cell using the same. The polymer of the present invention has a substituent comprising a terminal sulfonic acid group comprising Formula (1) at a side chain: where n may be a number in the range of about 1 to about 5.