A vinyl-compound-based resin composition containing a terminal vinyl compound (a) of a bifunctional phenylene ether oligomer having a polyphenylene ether structure, a naphthol aralkyl cyanate ester resin (b), a bisphenol A cyanate ester resin (c), a brominated flame retardant (d) and an inorganic filler (e). The resin composition is for use in a printed wiring board for high multilayer and high frequency, and is excellent in moldability, electric characteristics, peel strength, flame resistance and heat resistance after moisture absorption. Further, a prepreg comprising the above resin composition and a glass woven fabric, a metal-foil-clad laminate obtained by disposing a metal foil on one side or both sides of a stack of at least one prepreg and laminate-molding the resultant set, and a resin sheet obtained by applying a solution of the above resin composition to a surface of a metal foil or a film.

A curable composition including a radically polymerizable compound containing an unsaturated bond within the molecule, an inorganic filler containing a metal oxide, and a dispersant containing an acidic group and a basic group. The content of the metal oxide is between 80 parts by mass and 100 parts by mass (inclusive) relative to the amount of the inorganic filler of 100 parts by mass. Components of the curable composition other than the inorganic filler are organic components. A content of the inorganic filler is between 80 parts by mass and 400 parts by mass (inclusive) relative to the amount of the organic components of 100 parts by mass. A content of the dispersant is between 0.1 part by mass and 5 parts by mass (inclusive) relative to the amount of the inorganic filler of 100 parts by mass.

New polymer compositions based on poly(2,6-dimethyl-1,4-phenylene oxide) and other high-softening-temperature polymers are disclosed. These materials have a microphase domain structure that has an ionically-conductive phase and a phase with good mechanical strength and a high softening temperature. In some arrangements, the structural block has a softening temperature of about 210° C. These materials can be made with either homopolymers or with block copolymers. When these polymers are combined with electrolyte salts, they can be used as electrolytes that have both high ionic conductivity and good mechanical properties.

Isopropylidenediphenol-based polyether polyols, processes for their production, foams produced using such isopropylidenediphenol-based polyether polyols, such as PUR-PIR rigid foams, as well as to processes for producing such foams. The polyether polyols have an internal block comprising polymerized ethylene oxide moieties and an external cap comprising polymerized propylene oxide moieties.

An organic electroluminescence device including: an anode and a cathode; and at least one organic thin film layer between the anode and the cathode, wherein one of the organic thin film layer(s) comprises a polymer represented by the following formula (1). ##STR00001##

The invention provides a polyphenylene ether modified phenol-benzaldehyde multifunctional epoxy resin with formula (I).

##STR00001##

wherein

A is:

##STR00002##

PPE are:

##STR00003##

Z are:

##STR00004##

Y are:

##STR00005##

Their manufactured is following steps: polyphenylene ether 100 parts is dissolved in solvent, then phenol-benzaldehyde multifunctional epoxy resin 100˜450 parts and catalyst 0.01˜5 parts are added, stirred and mixed at 90˜180□, for 1˜4 hour, to obtain formula (I) solution. Said product is formulated with compositions for laminate, having excellent electrical properties and heat resistance. The dielectric constant is 4.03 (1 GHz), dissipation factor is 0.0046 (1 GHz) and no delamination longer than 60 minutes dipping in 288 soldering test after 2 hours pressure cooking test. Application is insulating materials for highly reliable electronic components such as EMC, PCB substrates, laminate and insulating plates.

A reversible crosslinking reactant composition is provided. The composition includes at least one furan-group-containing oligomer and a bismaleimide compound having a structure represented by Formula (II) ##STR00001##
wherein the furan-group-containing oligomer is an oligomer having a structure represented by Formula (IV), an oligomer having a structure represented by Formula (V), or an oligomer having a first repeating unit and a second repeating unit, wherein the first repeating unit has a structure represented by Formula (VI), the second repeating unit has a structure represented by Formula (VII), ##STR00002##
wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12, R.sup.13, R.sup.14, R.sup.15, R.sup.16, R.sup.17, R.sup.18, R.sup.19, R.sup.20, R.sup.21, R.sup.22, R.sup.23, R.sup.24, R.sup.25, q, z and E are as defined in specification.

A method for sulfonation of poly(phenylene ether) can comprise: dissolving a poly(phenylene ether) comprising 2,6-dimethyl-1,4-phenylene ether units, 2,3,6-trimethyl-1,4-phenylene ether units, 3,3′,5,5′-tetramethyl-4,4′-dihydroxybiphenyl ether units, or a combination thereof in a mixture of 1,2-dichloroethane and a cosolvent to form a solvent mixture in a mixing vessel, wherein the cosolvent comprises at least one of methyl ethyl ketone, diethyl ether, methyl ethyl sulfone, ethyl acetate, or tetramethylene sulfone; combining a sulfonating agent with the solvent mixture, wherein the sulfonating agent reacts with the poly(phenylene ether) to form sulfonated poly(phenylene ether); precipitating the sulfonated poly(phenylene ether); and filtering the precipitated sulfonated poly(phenylene ether) to form a sulfonated poly(phenylene ether) precipitate and a filtrate; wherein the sulfonated poly(phenylene ether) has a sulfonation level of 20 to 50%.

A polymer electrolyte membrane of the present disclosure comprises a perfluorosulfonic acid resin (A), wherein the polymer electrolyte membrane has a phase-separation structure having a phase where fluorine atoms are detected in majority and a phase where carbon atoms are detected in majority, in an image of a membrane surface observed under an SEM-EDX, and the polymer electrolyte membrane has a phase having an average aspect ratio of 1.5 or more and 10 or less in an image of a membrane cross-section observed under an SEM.

A metal-clad laminate includes an insulating layer, and a metal foil in contact with at least one surface of the insulating layer, in which the insulating layer contains a cured product of a resin composition containing a polyphenylene ether compound, and the metal foil is a metal foil in which a first nickel element amount, on a surface on a side in contact with the insulating layer, measured by X-ray photoelectron spectroscopy is 4.5 at % or less with respect to a total element amount measured by X-ray photoelectron spectroscopy, and a second nickel element amount, on a surface on a side in contact with the insulating layer when the surface is sputtered for 1 minute at a speed of 3 nm/min in terms of SiO2, measured by X-ray photoelectron spectroscopy is 4.5 at % or less with respect to a total element amount measured by X-ray photoelectron spectroscopy.