The present application relates to a phthalonitrile resin, a polymerizable composition, a prepolymer, a composite, a preparation method therefor, and a use thereof. The present application can provide: phthalonitrile having excellent curability, exhibiting a suitable process temperature and a wide process window, and capable of forming a composite having excellent physical properties; a polymerizable composition using the same; and a prepolymer.

A novel polymer having high glass transition temperature and an excellent balance between heat resistance, high refractive index and mechanical properties, and a composition and molded article containing the polymer are provided. The polymer according to the invention has a first structural unit represented by at least one of formulae (1-1), (1-2) and (1-3) below and a second structural unit having either a secondary amino structure or a tertiary amino structure at two or more terminals.

##STR00001##

A polyarylether-based polymer with side chain in methoxypolyethylene glycols structure, a solid polymer electrolyte and preparation methods therefore are disclosed. The main chain of the polymer has a polymer structure containing a polyarylether group, the side chain has a methoxypolyethylene glycols structure, and the structural formula of the polyarylether-based polymer is as follows: ##STR00001##
and the preparation method for the polyarylether-based polymer with side chain in methoxypolyethylene glycols structure comprises: step (1): preparing a polymer containing a polyarylether group; and step (2): dissolving the polymer containing a polyarylether group and methoxypolyethylene glycols in a solvent, then adding a catalyst, dripping a co-catalyst after the catalyst is dissolved, and conducting reaction while stirring to obtain the polyarylether-based polymer with side chain in methoxypolyethylene glycols structure. The all-solid polymer electrolyte prepared by the present invention has favorable ionic conductivity and excellent heat resistance, high temperature resistance and mechanical strength.

A method for producing a polycarbonate copolymer which has siloxane constituent units represented by any of formulae (1-1) to (1-4) and prescribed polycarbonate constituent units, the method having a polymerization step for polymerizing a silane-based compound selected from among a prescribed diaryloxysilane compound, a prescribed dialkoxysilane compound and a prescribed silicon compound, a carbonate compound and a diol compound such as an aromatic diol compound or an alicyclic diol compound in the presence of a transesterification catalyst. The polymerization step is carried out in a molten state under reduced pressure while removing alcohols derived from the carbonate compound.

##STR00001##

A polyarylether-based polymer with side chain in polyethylene glycol structure, a solid polymer electrolyte and preparation methods therefor are disclosed. The main chain of the polymer has a polymer structure containing a polyarylether group, the side chain has a polyethylene glycol structure, and the structural formula of the polyarylether-based polymer is as follows:

##STR00001##

and the preparation method for the polyarylether-based polymer with side chain in polyethylene glycol structure comprises: step (1): preparing a polymer containing a polyarylether group; and step (2): dissolving the polymer containing a polyarylether group and polyethylene glycol in a solvent, then adding a catalyst, dripping a coupling agent after the catalyst is dissolved, and conducting reaction while stirring to obtain the polyarylether-based polymer with side chain in polyethylene glycol structure. The all-solid polymer electrolyte prepared by the present invention has favorable ionic conductivity and excellent heat resistance, high temperature resistance and mechanical strength.

A polymer having a backbone and a side unit of 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide bonded thereto, where the backbone of the polymer includes at least one heterocyclic moiety. There is also provided a process for producing the polymer as defined herein as well as a flame retardant polyolefin formulation including the polymer as defined herein and a moulded article including the flame retardant polyolefin formulation as defined herein.

A process for producing polyarylene ether nitrile, in which an N-methylpyrrolidone solvent can be efficiently recovered. The process includes the following steps: mixing N-methylpyrrolidone, potassium carbonate, 2,6-dichlorobenzonitrile, dihydric phenol and toluene, and carrying out a dehydration reaction and a polymerization reaction in sequence to obtain a high-viscosity polyarylene ether nitrile solution; then pelletizing and conveying polyarylene ether nitrile particles together with methanol to a primary vibrating screen to complete a primary replacement of N-methylpyrrolidone; then using a secondary vibrating screen to complete a secondary replacement of the solvent; subsequently, grinding the polyarylene ether nitrile particles and carrying out an extraction with methanol, and then centrifuging, washing with water and drying to obtain purified polyarylene ether nitrile powder; and finally distilling replacement liquid and centrifugation liquid to separate methanol from N-methylpyrrolidone.

The present disclosure provides epoxy adhesive compositions with increased adhesion to surfaces, including metal surfaces, comprising a catechol modifier and methods of use thereof.

Compositions and methods related to the synthesis and application of poly(aryl ether)s are generally described.

A solution of a poly(phenylene ether) copolymer derived from 2-methyl-6-phenylphenol and a dihydric phenol in a non-halogenated solvent is useful in curable compositions. The copolymer has less than 0.5 weight percent monohydric phenols having identical substituents in the 2- and 6-positions of the phenolic ring, and an absolute number average molecular weight of 1,000 to 10,000 grams/mole. A solution of a poly(phenylene ether) copolymer derived from 2-methyl-6-phenylphenol, 2,6-dimethylphenol, and a dihydric phenol in a non-halogenated solvent is also useful in curable compositions. This copolymer has an absolute number average molecular weight of 1,000 to 5,000 grams/mole. A cured composition is obtained by heating curable compositions composed of the poly(phenylene ether) copolymer solutions and thermoset resins for a time and temperature sufficient to evaporate the non-halogenated solvent and effect curing. The compositions can be used for preparation of composites for printed circuit boards.