Mitsui Toatsu Chemicals, Incorporated

Wakabayashi Patent Agency

Kenji Ema

Shuhei Ikado

Hideo Kawashima

Junji Hara

Tomohide Yokoo

Yoshiaki Fukuda

Nobukatsu Kato

Takatoshi Mitsuishi

Takeshi Miyasaka

Jun Saito

Iori Matsumoto

A method for molding a thermosetting resin pipe having a balanced compressive strength between the axial direction and the direction normal to the pipe axis is disclosed. The method includes steps of molding a thermosetting resin in a smooth zone in the front section of a screw to such an extent that the resin after being extruded from the cylinder is capable of retaining its own shape, and orienting the resin and/or a fibrous filler randomly. An apparatus for producing such a thermosetting resin, and a thermosetting resin having a balanced compressive strength are also disclosed.

Method for shaping thermosetting resins

A copolymer consisting of 30 to 65 mole % of structural units of the formula ##STR1## 1 to 55 mole % of structural units of the formula ##STR2## and 10 to 60 mole % of structural units of the formula ##STR3## and having a number average molecular weight of 500 to 200,000.

Copolymers of acrylonitrile, styrene, and para-isopropenylphenol

Phenolic resin compositions comprising a polymeric substance having a phenolic OH group such as phenol resins, and a rubber having an epoxy group and an epoxy equivalent of 500 to 30,000 such as butadiene copolymers, acrylic copolymers, chloroprene copolymers and urethane copolymers are provided. These resin compositions exhibit improved properties having overcome the drawback of brittle properties intrinsic of conventional phenolic resins, and also exhibit cold resistance; hence they are used as molding materials, laminating materials, casting materials, binders, etc. Further, molding resin compositions having improved solvent-resistance and metal insert properties are provided.

Phenolic resin compositions

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Yokohama, Japan

Kenji Ema