Hitachi, Ltd.

Chikashi Kanno

Hiroshi Suzuki

Seikichi Tanno

Toru Koyama

Ikushi Kano

Shinichi Toyoda

Hisashi Kohkame

Hirokazu Takasaki

Koo Honjoo

A thermosetting resin composition comprising: [A] a polyfunctional epoxy resin produced from a reaction between a mixture of at least two polyhydric phenols selected from (a) bis(4-hydroxyphenyl)methane, (b) bis(4-hydroxyphenyl)ethane, (c) bis(4-hydroxyphenyl)-propane, (d) tris(4-hydroxyphenyl)alkane and (e) tetra(4-hydroxyphenyl)alkane, and epichlorohydrin, and [B] an acid anhydride curing agent; and a coil and a panel formed of said composition.

Coil impregnant of epoxy resin from polyhydric phenol mixture

A process for preparing a thermoplastic resin composition comprises subjecting a cross-linked rubber obtained by copolymerization of an acrylic ester represented by the general formula CH.sub.2 = CHCOOR, wherein R is an alkyl group having 2 to 8 carbon atoms, and a cross-linking agent to graft polymerization with a polymerizable vinyl or vinylidene monomer in the presence of polyvinyl chloride resin particles through radical polymerization. The present disclosure also relates to a process for preparing a mixed composition comprising the thermoplastic resin composition prepared above and a powder of polyvinyl chloride resin. The thermoplastic resin composition has good weather-resistance properties and good mechanical properties. As the thermoplastic resin composition can easily be mixed with a polyvinyl chloride resin, a polyvinyl chloride resin composition having excellent properties is obtained by simple mixing operation.

Process for preparing a thermoplastic resin with PVC dispersed therein

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Hitachi, Japan

Chikashi Kanno