Ciba-geigy Corporation

Hans Gempeler

Arnold Hofer

An epoxy resin composition comprising an epoxy resin which is solid at room temperature and contains on average more than epoxy group per molecule, and a quaternary pyrrolidinium salt as advancement catalyst. When advanced with compounds containing two phenolic hydroxyl groups, these compositions give excellent products of low viscosity which are suitable, for example, for use in powder resin coating.

Epoxy resin compositions

An epoxy resin composition comprising an epoxy resin which is solid at room temperature and contains on average more than epoxy group per molecule, and a quaternary morpholinium salt as advancement catalyst. When advanced with compounds containing two phenolic hydroxyl groups, these compositions give excellent products of low viscosity which are suitable, for example, for use in powder resin coating.

An epoxy resin composition comprising an epoxy resin that is liquid at room temperature and containing on average more than one epoxy group per molecule and a quarternary piperidinium salt as advancement catalyst. When advanced with compounds having two phenolic hydroxyl groups, such compositions give excellent products of low viscosity which are suitable, for example, for use in powder coating compositions.

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Aesch, Switzerland

Hans Gempeler