Toagosei Company, Ltd.

Togosei Co., Ltd.

Mitsuyoshi Sato

Seitaro Tajima

Yoshiharu Ohashi

A 2-cyanoacrylate composition useful as an adhesive contains a Lewis acid metal salt comprising a metal such as aluminum, gallium, indium or thalium, and the conjugate base of an acid such as a monohalo-, dihalo- or trihalo-acetate (e.g. aluminum trifluoroacetate salt). A clathrate such as a crown ether is also present.

Composition of 2-cyanoacrylate, lewis acid metal salt and clathrate

A 2-cyanoacrylate composition useful as an adhesive contains a Lewis acid metal salt which comprises a specific metal such as aluminum, gallium, indium or thallium, and the conjugate base of an acid having oxygen such as a monohalo-, dihalo or trihaloacetate, wherein the metal is bonded to the conjugate base through an oxygen atom, and a compound having clathrating ability such as a crown ether.

Composition of 2-cyanoacrylate, Lewis acid metal salt and clathrate

An accelerator for cyanoacrylates including an inclusion compound having an aromatic amine as a guest compound in the invention is effective as a pretreatment agent in adhering various materials to be adhered using a cyanoacrylate adhesive and as a post-treatment agent in filling adhesion or raising adhesion. Further, this accelerator has almost no unpleasant odor. Accordingly, it improves a working environment remarkably.

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Aichi, Japan

Mitsuyoshi Sato