Tsubakimoto Chain Company

Osaka University

Kansai Chemical Engineering Co., Ltd.

Bio-energy Corporation

Takashi Tsujimoto

Makoto Kanehira

Kazumasa Matsuno

Takerou Nakagawa

Hideo Noda

Takashi Koizumi

Yasumasa Tsubakimoto

Hiroshi Uyama

Takahiko Terada

Fumio Ochiai

Yinan Yin

Yasumasa Tubakimoto

A star-branched polyester polyol is obtained by polymerizing lactide or lactic acid, using, as an initiator, a fat and oil composed mainly of a triacylglycerol that has at least three hydroxyl groups or epoxy groups in its molecule. This polyester polyol has low crystallinity and a low melting point, and thus shows good working properties when used in various applications. Furthermore, this polyester polyol is derived from renewable resources, and, thus, it is highly desirable in view of its effectiveness in protecting the global environment and preventing fossil resources from being depleted.

Polyester polyol

This invention relates to a chain link plate which is constructed by a high tensile strength fiber which is wound around between two pivot points and which is fixed to each other by adhesive material. The link plate is improved in strength and decreased in weight.

Link plate

A conveyor or chain having a tubular filament-wound cylindrical element used as the pins interconnecting the link plates and/or as rollers or bushings in the chain assembly. The element is formed from a length of tubular material which is wound on a mandrel having an outside diameter equal to the inside diameter of the tubular element. The filament of the winding is a long aramid fiber which is integrated in the tubular material by an adhesive agent.

Filament-wound cylindrical element for chain

Growing community of inventors

Osaka, Japan

Takashi Tsujimoto