Abstract: 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.

Abstract: The present application provides a method for producing a cured product that includes: (I) heating a thermosetting composition containing a styrene-butadiene-styrene block copolymer (SBS) (A) and a thermal radical generator (B) within a temperature range of 120° C. to 180° C. until 30% or more of double bonds derived from 1,2-bond structure in a butadiene block react; and (II) then heating the thermosetting composition within a temperature range of 181° C. to 300° C. until 50% or more of the double bonds derived from 1,2-bond structure in a butadiene block react.

Abstract: Provided is a novel resin composition for a metal-clad laminate, with which a metal-clad laminate having excellent adhesion with a metal foil, solder heat resistance, insulation and the like can be produced. A terminally modified polybutadiene contained in the resin composition for a metal-clad laminate according to the present invention has a structure of formula (III) on each of both terminals of a polybutadiene comprising a repeating unit of formula (I) and a repeating unit of formula (II), wherein a proportion of the repeating unit of formula (I) in all the repeating units is 70 to 99% by mol.

Abstract: 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.

Abstract: 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.

Abstract: A fluororubber composition contains 0.1 to 50 parts by weight of an epoxidized polybutadiene with respect to 100 parts by weight of a fluororubber. As the fluororubber, a vinylidene fluoride-hexafluoropropylene copolymer (FKM), a tetrafluoroethylene-propylene-based copolymer (FEPM), a tetrafluoroethylene-perfluoroalkyl vinyl ether-based copolymer (FFKM), or the like is exemplified. The fluororubber composition may further contain a vulcanizing agent or the like.

Abstract: A novel copolymer having excellent pigment dispersion performance, and more particularly, a novel copolymer usable as a pigment dispersing agent that can attain high luminance and high contrast of a green picture element in a color filter. The novel copolymer contains: a block chain (A) including a repeating unit having a tertiary amino group; and a block chain (B) including a repeating unit represented by the following formula (I) (wherein R1 represents a hydrogen atom or a C1-C3 alkyl group, R2 and R3 each independently represent a hydrogen atom or a C1-C6 alkyl group, Q represents an oxygen-containing saturated hetero ring group optionally having an alkyl group as a substituent or a C2-C20 alkenyl group, and n represents an integer of 0 to 6), and has an amine value of 80 mgKOH/g or more and 250 mgKOH/g or less.

Abstract: A novel copolymer having excellent pigment dispersion performance, and more particularly, a novel copolymer usable as a pigment dispersing agent that can attain high luminance and high contrast of a green picture element in a color filter. The novel copolymer contains: a block chain (A) including a repeating unit having a tertiary amino group; and a block chain (B) including a repeating unit represented by the following formula (I) (wherein R1 represents a hydrogen atom or a C1-C3 alkyl group, R2 and R3 each independently represent a hydrogen atom or a C1-C6 alkyl group, Q represents an oxygen-containing saturated hetero ring group optionally having an alkyl group as a substituent or a C2-C20 alkenyl group, and n represents an integer of 0 to 6), and has an amine value of 80 mgKOH/g or more and 250 mgKOH/g or less.