Neste Oy

Heikki Ruohonen

Jukka Laakso

Olli Ikkala

Esko Savolainen

Esa Virtanen

Toivo Karna

Helge Lindstrom

Timo Niemi

Pauli Kirmanen

Alejandro Andreatta

Hannele Jarvinen

Kimmo Vakiparta

Toivo K Arn A

Hannele J Arvinen

Kimmo V Akiparta

The invention relates to a conductive polymer complex which contains a polyaniline or derivative thereof doped with a protonic acid. By the method according to the invention, a conductive polymer is obtained having substantially reduced acidity, sufficiently high conductivity level, and which is suitable, for example, for being melt processed in conventional plastics processing apparatus. The acidity of the conductive polymer can be reduced by having the conductive polymer contain both a metal compound and an additionally neutralizing compound. The obtained conductive polymer material, having a pH value of approximately 3-8, can be mixed with an insulating polymer to produce a conductive plastics mixture. The invention also relates to a method of preparing a conductive polymer that is more processable by incorporating therein a plasticizing agent selected from the group consisting of water, a C.sub.1 -C.sub.3 alcohol, and mixtures thereof.

Conductive plastics material and a method for its preparation

Compositions and methods are described that relate to the use of reaction products of metal compounds and protonic acids for plasticizing and neutralizing acidic, protonated compositions comprising substituted and unsubstituted polyanilines and co-polymers and or mixtures thereof; and for reducing the percolation threshold for conductivity in blends with insulating bulk polymers.

Metal compound/protonic acid containing electrically conductive

Electrically conductive compositions and methods for their preparation

Growing community of inventors

Helsinki, Finland

Heikki Ruohonen