Nippon Soda Co., Ltd.

Yoshio Hayakawa

Izumi Tando

Shota Osumi

Hiroki Ueda

Mitsuhiro Nakamura

Hiroki Hashimoto

A resin composition for a metal-clad laminate plate includes a block copolymer comprising a butadiene block having a molar ratio of a 1,2-bonding structure to a 1,4-bonding structure of 80:20 to 100:0 and a styrene block. Further, the resin composition for the metal-clad laminate plate includes polybutadiene having a molar ratio of a 1,2-bonding structure to a 1,4-bonding structure of 80:20 to 100:0.

Resin composition for metal-clad laminates, prepreg, and metal-clad laminate

A polyphenylene ether resin composition includes (A) polyphenylene ether, and (B) a block copolymer including a butadiene block having a molar ratio of a 1,2-bonding structure to a 1,4-bonding structure of 80:20 to 100:0 and a styrene block. The number average molecular weight (Mn) of the component (A) may be 1,000 to 7,000, the weight ratio of the styrene block to the butadiene block in the component (B) may be 10:90 to 80:20, and the weight average molecular weight (Mw) of the component (B) may be 2,000 to 100,000.

Polyphenylene ether resin composition, prepreg, metal-clad laminate

Provided is a method for producing a hydrogenated unsaturated polyhydroxyhydrocarbon polymer capable of suppressing side reactions such as a hydrogenolyzis reaction of a terminal hydroxyl group and achieving a high hydrogenation rate in a short reaction time. A hydrogenated unsaturated polyhydroxyhydrocarbon polymer is obtained by a method including: hydrogenating an unsaturated polyhydroxyhydrocarbon polymer under the presence of a hydrogenation catalyst and a reaction solvent in the following two stages (I) and (II): (I) carrying out a hydrogenation reaction in a temperature range of 80&#xb0; C. to 130&#xb0; C. until a hydrogenation rate of at least 30 mol % is achieved; and then (II) carrying out a hydrogenation reaction at a temperature higher than 130&#xb0; C. until a hydrogenation rate of at least 98 mol % is achieved.

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Ichihara, Japan

Yoshio Hayakawa