Abstract: The present invention relates to a phosphazene-based polymer comprising an amino acid ester, polyethylene glycol, a group comprising a functional group, and a catechol group linked directly or by a linker to a part of or an entire functional group, in a predetermined ratio. In addition, the present invention relates to a preparation method thereof, and a tissue-adhesive composition comprising the same as an active ingredient.

Abstract: Methods of drilling a wellbore into a subterranean formation or of treating a treatment zone along a wellbore penetrating a subterranean formation or of treating a pipeline, the methods comprising steps of: (A) forming a fluid, the fluid comprising: (i) water; and (ii) a water-soluble linear polyphosphazene; and (B) introducing the fluid into the well or into the pipeline. In addition, a well system and methods are provided including such a fluid.

Abstract: An aniline monomer having a phosphonic acid of general formula (4) is polymerized to produce a polyaniline. In the formula, R1 is NH2 or NH3X, and X is a halogen. R2 are each independently a phosphonic acid or a salt thereof. R3 are each independently selected from the group consisting of a halogen atom, alkyl group having 1-15 carbon atoms, aralkyl group having 7-34 carbon atoms, alkoxy group having 1-15 carbon atoms, alkylthio group having 1-15 carbon atoms, alkylamino group having 1-15 carbon atoms, carboxyl group, carboxylic acid alkyl ester group wherein the alkyl group has 1-15 carbon atoms, nitro group, and cyano group. m is an integer of 1-4, n is an integer of 0-3, and the sum of m and n is 1-4. However, none of R2 and R3 is present at the para position relative to R1.

Abstract: The present invention relates to a biodegradable and thermosensitive poly(organophosphazene) with a functional group, a preparation method thereof, and a use thereof for delivery of bioactive substances. According to the present invention, poly(organophosphazene) is a phosphagen-based polymer showing biodegradability, thermosensitivity, and sol-gel phase transition depending on temperature change, whereby when administered into a living body with bioactive substances such as drugs, the poly(organophosphazene) forms a gel-phase at body temperature to be capable of controlled release of the bioactive substances. Further, the poly(organophosphazene) has functional groups to chemically bind with bioactive substances through an ionic bond, covalent bond, or coordinate covalent bond to be capable of a sustained release of the bioactive substances due to its good binding property. Therefore, the poly(organophosphazene) is useful as a delivery material for bioactive substances.

Abstract: A polymer comprising a first repeating unit represented by Formula 1: wherein R1 to R13 and Ar1 in Formula 1 are defined in the specification.

Abstract: A sulphur-containing triazine monomer is provided that can be used in the synthesis of a polymer membrane for a PEM-type fuel cell. The sulphur-containing triazine monomer has a structure corresponding to a formula (I): in which: Tz represents a 1,3,5-triazine nucleus; X1 and X2, which are identical or different, represent S, SO, or SO2; Ar1, Ar2, Ar4 and Ar5, which are identical or different, represent a substituted or unsubstituted phenylene group; Ar3 represents a substituted or unsubstituted phenyl group; and Z1 and Z2, which are identical or different, are selected from a group that includes halogens, hydroxyl, alkoxyl, thiol, carboxyl, carboxylates, amine, sulphonamide, acyl chlorides, sulphonyl chlorides, sulphonyl fluorides, isocyanates, and combinations thereof.

Abstract: A resin composition is provided. The resin composition comprises: an epoxy resin; and a hardener, which is a stable solution obtainable from the following steps: (a) adding a N,O-heterocyclic compound of formula I or II and a DOPO-based compound into an organic solvent to provide a reaction solution: wherein R1 to R3, W1, W2, m, n, p and q are as defined in the specification; (b) heating the reaction solution to carry out a ring-opening reaction to provide a polymer solution; and (c) cooling the polymer solution to obtain the stable solution, wherein the organic solvent is unreactive to the N,O-heterocyclic compound and the DOPO-based compound, and the amounts of the DOPO-based compound and the hardener are as defined in the specification.

Abstract: Biodegradable polyphosphazene polymers containing pyrrolidone side groups, and the biomedical use of such polyphosphazene polymers are disclosed.

Abstract: The invention provides halogen-free, bisphenol triazole resins and polymers having exceptional flame retarding properties, related compositions and methods of making and use thereof.

Abstract: Triazine polymer comprising at least a plurality of base structural units comprising at least a moiety corresponding to the formula: in which: the symbols X1 and X2, which are identical or different, represent S, SO, or SO2; the symbols Ar1 and Ar2, which are identical or different, represent a substituted or unsubstituted phenylene group; the symbol Ar3 represents a substituted or unsubstituted phenyl group; the symbol Tz represents the 1,3,5-triazine nucleus. This polymer of the invention, which can be used as electrolyte in a PEM fuel cell, makes it possible to obtain membranes of high chemical and dimensional stability which additionally exhibit a high ion conductivity.

Abstract: A series of novel phosphorus-containing compounds having the following formula is provided: in which: R1-R4, A, Q and m are as defined in the specification. A process for the preparation of the compound of formula (I) is also provided. A polymer of formula (PA), and preparation process and use thereof are further provided. A polymer of formula (PI), and preparation process and use thereof are also provided.

Abstract: Biodegradable polyphosphazene polymers containing pyrrolidone side groups, and the biomedical use of such polyphosphazene polymers are disclosed.

Abstract: A series of novel phosphorus-containing compounds having the following formula is provided: in which: R1-R4, A, Q and m are as defined in the specification. A process for the preparation of the compound of formula (I) is also provided. A polymer of formula (PA), and preparation process and use thereof are further provided. A polymer of formula (PI), and preparation process and use thereof are also provided.

Abstract: The invention provides halogen-free, bisphenol triazole resins and polymers having exceptional flame retarding properties, related compositions and methods of making and use thereof.

Abstract: The present invention relates to A phenol compound according to Formula (I): wherein: R1 is selected from the group consisting of, optionally substituted, 2-pyridyl, 3-pyridiyl and 4-pyridyl groups, wherein R1 is at position 2 or 3 of the phenol ring; R2 is selected from the group consisting of, optionally substituted, 2-pyridyl, 3-pyridiyl, 4-pyridyl and phenyl groups, wherein R2 is at position 5 or 6 of the phenol ring; and the phenol ring is optionally substituted at one or two positions, independently selected from positions 2, 3, 5 and 6, with a halogen atom or a with an optionally substituted C6-C12 aryl group or an optionally substituted C1-C10 alkyl group. The present invention relates also to (co)polymers comprising the phenol compound according to Formula (I) and membranes and ionic resins comprising said (co)polymers.

Abstract: Biodegradable polyphosphazene polymers containing pyrrolidone side groups, and the biomedical use of such polyphosphazene polymers are disclosed.

Abstract: The invention relates to novel monomers of Formula (I) useful for preparation of phase-separated biocompatible polymers or polymer compositions. These polymers or polymer compositions may be bioresorbable and/or biodegradable and have desirable mechanical properties, such as fracture and/or fatigue toughness, which have not been a primary design criteria for such polymers previously. The polymers or polymer compositions are useful in a variety of medical applications, such as in the fabrication of medical devices. Therefore, methods for preparing these polymers or polymer compositions and medical devices are also encompassed by this disclosure.

Abstract: Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts.

Abstract: Compounds having the formulas below. Each R1 is an aromatic-containing group. Each R2 is methyl or phenyl. M is an alkali metal, and n is a positive integer. A thermoset made by curing a mixture comprising a curing agent and the below phthalonitrile monomer. A method of: reacting bis(4-fluorophenyl)phenylphosphine oxide, bis(4-fluorophenyl)methylphosphine oxide, or a mixture thereof with an excess of an aromatic diol in the presence of an alkali metal carbonate to form the oligomer below.

Abstract: A liquid crystalline thermoset oligomer or polymer including a structural unit of Chemical Formulae 1 and 2; and a functional group of Chemical Formula A,

Abstract: The present invention generally relates to introducing genetic material to living cells. In some embodiments, the present invention relates to compositions of matter for targeted delivery of nucleic acids to cells. In other embodiments, the present invention relates to methods of targeted delivery of nucleic acids to cells. In still other embodiments, the present invention relates to polymers that contain at least one amino acid in their backbone. In yet other embodiments, the present invention relates to polymers that contain at least one amino acid in their backbone thereby resulting in biodegradability, and in some embodiments, controlled biodegradability.

Abstract: Phosphorus-containing compounds of formula (I): (I) wherein m, n, R, R1 and R2 are as set forth in the claims. The compounds of formula (I) can be used to provide polymers with flame retardant properties.

Abstract: Disclosed herein is a curable cyclic phosphazene compound having a low dielectric constant, a low dielectric loss index and high thermal stability, and a method of preparing the same. The curable cyclic phosphozene polymer prepared using the compound has a low dielectric constant and excellent thermal properties, compared to conventional phosphozene polymers.

Abstract: Polyphosphazene polymers having immunomodulating activity, and the biomedical use of such polyphosphazene polymers, in conjunction with an antigen or an immunogen are disclosed.

Abstract: Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts.

Abstract: Featured are novel heterocycle substituted hydroquinones, aromatic copolymers and homopolymers bearing main and side chain polar pyridine units. These polymers exhibit good mechanical properties, high thermal and oxidative stability, high doping ability and high conductivity values. These novel polymers can be used in the preparation and application of MEA on PEMFC type single cells. The combination of the above mentioned properties indicate the potential of the newly prepared materials to be used as electrolytes in high temperature PEM fuel cells.

Abstract: Featured are novel heterocycle substituted hydroquinones, aromatic copolymers and homopolymers bearing main and side chain polar pyridine units. These polymers exhibit good mechanical properties, high thermal and oxidative stability, high doping ability and high conductivity values. These novel polymers can be used in the preparation and application of MEA on PEMFC type single cells. The combination of the above mentioned properties indicate the potential of the newly prepared materials to be used as electrolytes in high temperature PEM fuel cells.

Abstract: The invention relates to carboxylic acid derivates which contain at least one organically polymerisable group and at least one group which contains phosphorous and is reactive or that modulates the properties of the molecule. The invention also relates to a method for production of the inventive molecules and the use thereof in dentistry and for influencing the properties of materials.

Abstract: New aromatic polyether type copolymers bearing main chain pyridine and side chain pyridine or pyrimidine units, which exhibit good mechanical properties, high thermal and oxidative stability, high doping ability and high conductivity values. The polymers are useful in the preparation and application of MEA on PEMFC type single cells. The polymers are, further, particularly suitable for use in high temperature PEM fuel cells.

Abstract: Highly polymerizable diamine compounds having a phosphorylcholine group are disclosed. High-molecular weight polymers are obtained from the highly polymerizable diamine compound having a phosphorylcholine group as a monomer, and the polymers have improved mechanical strength, water resistance and heat resistance while maintaining excellent biocompatibility and processability of MPC polymers. Processes for producing the polymers are disclosed. The diamine compounds having a phosphorylcholine group are represented by Formula (I). The polymers contain at least 1 mol % of a specific structural unit with a phosphorylcholine group represented by Formula (II) and have a number average molecular weight of not less than 5,000. In the processes, the diamine compound is used as a monomer.

Abstract: Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts.

Abstract: Morpholino compounds are provided having the structure: where R1 is selected from the group consisting of lower alkyl, di(lower alkyl)amino, and phenyl; R2 is selected from the group consisting of lower alkyl, monocyclic arylmethyl, and monocyclic (aryloxy)methyl; R3 is selected from the group consisting of triarylmethyl and hydrogen; and Y is selected from the group consisting of: a protected or unprotected hydroxyl or amino group; a chlorophosphoramidate group; and a phosphorodiamidate linkage to the ring nitrogen of a further morpholino compound or a morpholino oligomer. Such compounds include doubly protected morpholino guanine (MoG) monomers. Also described is their use in synthesis of morpholino oligomers.

Abstract: Polymers and copolymers of formula I: in which m is typically 30 to 500 and n is 0 to 500; Ar is for example, 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, or 2,6-pyridylene; Ar2 and Ar3 are selected from various bivalent aryl and heteroaryl groups; and X is for example, the bivalent SO2 or CO, have high temperature properties which make them useful as films, matrices in carbon fiber reinforced composites and high performance adhesives; processes for preparing the polymers and copolymers employ a novel C—N coupling reaction.

Abstract: An ionically conductive polymer has the chemical structure 1 as shown herein. Examples of the polymer include 4,4?-(4-(1H-benzo[d]imidazol-2-yl)butane-2,2-diyl)diphenol, sulfonated poly(aryl ether sulfone) containing benzimidazole backbone, sulfonated poly(aryl ether sulfone) containing carboxylic acid backbone, and sulfonated poly(aryl ether sulfone) containing benzimidazole backbone from carboxylic acid containing sulfonated poly(aryl ether sulfone). The polymer has intrinsic ion conducting properties so that it is effectively conductive even under low water conditions. In one embodiment, the polymer has an ionic conductivity of at least 1×10?5 S/cm at a temperature of 120° C. when the polymer is substantially anhydrous.

Abstract: A polymer compound comprising a repeating unit of the formula (1): —[Ar1—(X1)n]—??(1) (wherein, Ar1 represents an arylene group having a group of the following formula (2), X1 represents —CR1?CR2— (R1 and R2 represent a hydrogen atom or substituent) or —C?C—, and n represents 0 or 1.) (wherein, Ar2 represents an arylene group, Ar5 represents a direct bond, arylene group or the like, R3 and R4 represent a direct bond, substituent or the like, Ar3 and Ar4 represent an aryl group or the like, and Y represents the following formula: Here, when Ar5 is a direct bond, R3 is a direct bond.).

Abstract: A series of novel phosphorus-containing cured benzoxazine resins, which are synthesized from dihydrobenzoxazine resins with reactive phosphorus-containing compounds. The cured benzoxazine resins have desired flame retardancy and high glass transition temperature, and are suitable for the fabrication of printed circuit board and the semiconductor encapsulant applications.

Abstract: Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts.

Abstract: Compositions comprising at least one phosphorescent organometallic compound and a polymer comprising structural units of formula II are useful in organic light emitting devices wherein R1, R2, and R4 are independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; wherein R3 and R5 are independently selected from the group consisting of hydrogen, triphenylsilyl, t-butyl, mesityl, diphenyl phosphine oxide, and diphenyl phosphine sulfide; and a, b and d are independently 0 or an integer ranging from 1 to 3.

Abstract: Copolymers are manufactured to include a zwitterionic monomer (e.g., methacryloyloxyethyl phosphorylcholine monomer), a dihydroxyphenyl derivatized monomer, and optionally one or more additional monomers. The dihydroxyphenyl derivatized monomer gives the copolymers excellent adhesion properties. Optional monomers include a cationic amino monomer, a hydrocarbon monomer, and/or a hydrophilic monomer. The copolymers are biocompatible and can be used with medical devices.

Abstract: Featured are novel heterocycle substituted hydroquinones, aromatic copolymers and homopolymers bearing main and side chain polar pyridine units. These polymers exhibit good mechanical properties, high thermal and oxidative stability, high doping ability and high conductivity values. These novel polymers can be used in the preparation and application of MEA on PEMFC type single cells. The combination of the above mentioned properties indicate the potential of the newly prepared materials to be used as electrolytes in high temperature PEM fuel cells.

Abstract: Polyamides and polyimides containing flexible isopropylidene, trifluoromethyl and tetramethyl substituents and their synthetic method are disclosed. Polyamide containing flexible isopropylidene, trifluoromethyl and tetramethyl substituents is synthesized by reacting diamine compound (2,2-bis[4-(2-trifluoromethyl-4-aminophenoxy)-3,5-dimethylphenyl]propane) with an equimolar diacid via a polycondensation reaction. Polyimide containing flexible isopropylidene, trifluoromethyl and tetramethyl substituents is synthesized by reacting diamine compound with an equimolar dianhydride via a polycondensation reaction.

Abstract: Polyphosphazene polymers having at least one sulfonated pendent group, and no more than five different sulfonated pendent groups, repeated along the polymer chain, wherein at least one the repeated sulfonated pendent groups links at least one SO3? group to the polymer chain through a nitrogen-free linkage containing at least three carbon atoms, are disclosed, along with methods of making same, and uses therefor.

Abstract: A flame-retardant resin composition comprising a phosphazene flame retardant and a polyester resin, wherein the flame retardant is bonded to the molecules of the polyester resin via the ester group thereof, can retain a high flame retardance for a prolonged term with little or no vaporization with time and is excellent in flame retardance, impact resistance, properties and processability.

Abstract: The present invention relates to polyphosphate ester morpholides, compositions comprising mixtures thereof and thermoplastic resin compositions containing the polyphosphate ester morpholide composition as a flame retardant. The flame retardant compositions comprise mixtures of polyphosphate ester morpholides which are represented by the following general formula I: in which X is 1 or 2; R1 is a C6-C20 aryl group, an alkyl substituted C6-C20 aryl group or a derivative thereof; R2 is a C6-C30 arylene group, an alkyl substituted C6-C30 arylene group or a derivative thereof; n is the average number of morpholide repeating units, m is the average number of R1 repeating units, and n+m is 1 to 5. In accordance with the present invention, it is possible to provide a flame retardant thermoplastic resin compositions having improved flame retardancy even when small amounts of the flame retardant are used.

Abstract: The invention concerns a radio-labeled antithrombogenic polymer and its use as part of therapeutic means to prevent excessive cell proliferation or scarring, and means which comprise the radiolabeled antithrombogenic polymer, such as emplastrum or artificial implants with a biocompatible coating.

Abstract: A method for making poly(dichlorophosphazene) using solid state reactants is disclosed and described. The present invention improves upon previous methods by removing the need for chlorinated hydrocarbon solvents, eliminating complicated equipment and simplifying the overall process by providing a “single pot” two step reaction sequence. This may be accomplished by the condensation reaction of raw materials in the melt phase of the reactants and in the absence of an environmentally damaging solvent.

Abstract: The present invention relates to cyclic phosphazene azides and their use in a process for producing a rheology modified polymer which comprises contacting a polymer with a cyclic phosphazene azide at a temperature which is at least the decomposition temperature of the cyclic phosphazene azide. When the cyclic phosphazene azide reacts with the polymer, at least two separate polymer chains are advantageously joined and the molecular weight of the polymer chain is increased.

Abstract: Disclosed is a composition which comprises a polymer containing at least some monomer repeat units with water-solubility- or water-dispersability-imparting substituents and at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer being of the formula wherein x is an integer of 0 or 1, A is one of several specified groups, such as B is one of several specified groups, such as or mixtures thereof, and n is an integer representing the number of repeating monomer units. In one embodiment, a single functional group imparts both photosensitivity and water solubility or dispersability to the polymer. In another embodiment, a first functional group imparts photosensitivity to the polymer and a second functional group imparts water solubility or dispersability to the polymer.

Abstract: Disclosed is a composition which comprises (a) a polymer containing at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer being of the formula wherein x is an integer of 0 or 1, A is one of several specified groups, such as B is one of several specified groups, such as or mixtures thereof, and n is an integer representing the number of repeating monomer units, wherein said photosensitivity-imparting substituents are hydroxyalkyl groups; (b) at least one member selected from the group consisting of photoinitiators and sensitizers; and (c) an optional solvent. Also disclosed are processes for preparing the above polymers and methods of preparing thermal ink jet printheads containing the above polymers.

Abstract: A melt polymerization method for producing poly(arylene ethers phosphine oxide)s suited to optical applications comprising reacting a trimethyl silyl derivative of bisphenol and an activated aromatic dihalide, wherein either reactant is a phosphine oxide, is provided.