A method for producing polyphenylene ether amine includes following steps. In step (a), a hydrogenation reaction tank is provided; a guided gas stirrer is disposed in the hydrogenation reaction tank. In step (b), a reaction solution is placed in the hydrogenation reaction tank, and the reaction solution is nitro polyphenylene ether dissolved in a solvent. In step (c), a hydrogenation catalyst is added to the reaction solution. In step (d), a hydrogen gas is introduced into the hydrogenation reaction tank. In step (e), the guided gas stirrer is activated. In step (f), a hydrogenation reaction is carried out on the conditions that a reaction temperature is 50-200° C. and a reaction time is 1-20 hours, so as to hydrogenate the nitro polyphenylene ether in the reaction solution to polyphenylene ether amine. In step (g), the reaction solution is cooled down to a room temperature; the hydrogenation catalyst is removed.

An oligomer (2,6-dimethylphenylene ether) is provided. Its structure is shown as follows: ##STR00001##
which comprises separately independent hydrogen; alkyl or phenyl; separately independent —NR—, —CO—, —SO—, —CS—, —SO.sub.2—, —CH.sub.2—, —O—, null, —C(CH.sub.3).sub.2—, or ##STR00002##
and a hydrogen, ##STR00003##
The features of the cured products include a high glass-transition temperature, a low dielectric feature, preferred thermal stability, and good flame retardancy. The present invention effectively controls the number-average molecular weight of the product to obtain excellent organic solubility.

An oligomer (2,6-dimethylphenylene ether) is provided. Its structure is shown as follows: ##STR00001##
which comprises separately independent hydrogen; alkyl or phenyl; separately independent —NR—, —CO—, —SO—, —CS—, —SO.sub.2—, —CH.sub.2—, —O—, null, —C(CH.sub.3).sub.2—, or ##STR00002##
and a hydrogen, ##STR00003##
The features of the cured products include a high glass-transition temperature, a low dielectric feature, preferred thermal stability, and good flame retardancy. The present invention effectively controls the number-average molecular weight of the product to obtain excellent organic solubility.

A resin composition includes: (A) a polyphenylene ether resin of Formula (1) and (B) a compound of Formula (3), and/or a compound of Formula (4), and/or a compound of Formula (5). An article is made from the resin composition. The article made from the resin composition may include a prepreg, a resin film, a laminate or a printed circuit board, and one or more properties including resin filling void, glass transition temperature, Z-axis ratio of thermal expansion, dielectric constant, dissipation factor, and warpage may be improved. ##STR00001##

A resin composition includes: (A) a polyphenylene ether resin of Formula (1) and (B) a compound of Formula (3), and/or a compound of Formula (4), and/or a compound of Formula (5). An article is made from the resin composition. The article made from the resin composition may include a prepreg, a resin film, a laminate or a printed circuit board, and one or more properties including resin filling void, glass transition temperature, Z-axis ratio of thermal expansion, dielectric constant, dissipation factor, and warpage may be improved. ##STR00001##

A composition for stably preparing a hollow particle by a coacervation method, a hollow particle prepared using a composition for preparing a hollow particle, and a method of preparing a hollow particle are disclosed. A mono-disperse hollow particle is stably provided by excellent coacervate forming capability, such that it is expected to be beneficially used as a carrier in various fields such as a cosmetic, a paint, plastic, rubber, a synthetic wood, a refractory material, and an agricultural chemical.

A composition for stably preparing a hollow particle by a coacervation method, a hollow particle prepared using a composition for preparing a hollow particle, and a method of preparing a hollow particle are disclosed. A mono-disperse hollow particle is stably provided by excellent coacervate forming capability, such that it is expected to be beneficially used as a carrier in various fields such as a cosmetic, a paint, plastic, rubber, a synthetic wood, a refractory material, and an agricultural chemical.

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.

The present invention provides a poly(phenylene ether) which retains low-dielectric characteristics and is soluble in various solvents. The poly(phenylene ether) is characterized by being obtained from one or more raw-material phenols including a phenol satisfying at least Requirement 1 (to have hydrogen atoms in the ortho and para positions) and by having a slope calculated from a conformational plot of less than 0.6.

The present invention provides a poly(phenylene ether) which retains low-dielectric characteristics and is soluble in various solvents. The poly(phenylene ether) is characterized by being obtained from one or more raw-material phenols including a phenol satisfying at least Requirement 1 (to have hydrogen atoms in the ortho and para positions) and by having a slope calculated from a conformational plot of less than 0.6.