Neste Oy

Upm-kymmene Corporation

Uniax Corporation

Optatech Corporation

Tampere University Foundation, Sr.

Panipol Oy

Olli Ikkala

Jukka Laakso

Esko Savolainen

Esa Virtanen

Heikki Ruohonen

Toivo Karna

Alejandro Andreatta

Lars-Olof Pietila

Helge Lindstrom

Timo Niemi

Pentti Passiniemi

Pauli Kirmanen

Markus Nuopponen

Yong Cao

Antti Laukkanen

Christer Hans Bergstrom

Maaria Seläntaus

Jan-Erik Teirfolk

Hannele Jarvinen

Nikitas Katsaras

Kimmo Vakiparta

Riitta Holsti-Miettinen

Mikko Poutanen

Kurt Blomqvist

Mari Tiitu

Toivo K Arn A

Anja Talo

Hannele J Arvinen

Matti Jussila

Kimmo V Akiparta

Arri Priimägi

Andreas Walther

Heidi Osterholm

An optically transparent matrix including a molecule containing a hydroxyazobenzene group or its derivative embedded in the matrix. An optical system including the optically transparent matrix, an isomerizing light source, and one or more light detector(s) for measuring absorbance changes from the optically transparent matrix. A method for measuring the quantity of hydrogen bonding gaseous molecules.

Optical sensor for hydrogen bonding gaseous molecules

Method for fabricating fiber and film products and composites includes: introducing an aqueous gel of nanofibrillar cellulose into a volume of organic extraction agent miscible with water so that the aqueous gel is kept as a separate phase and forms one or several discrete physical entities containing the nanofibrillar cellulose within the phase; changing water with the organic extraction agent in said one or several discrete physical entities of nanofibrillar cellulose; and drying the nanofibrillar cellulose by removing the organic extraction agent from the one or several discrete physical entities of nanofibrillar cellulose. In the method the aqueous gel of nanofibrillar cellulose is introduced into the volume of organic extraction agent in the form of one or several elongated elements which form a fiber-like or ribbon-like or film-like product after drying.

Method for fabricating fiber products and composites

A two-component curable paint composition comprises a base component containing at least one curable resin, and a hardening component which contains a non-conducting polyaniline, and a liquid-phase or molten-phase curing agent capable of curing said curable resin of the resin component and capable of dissolving non-conducting polyaniline. According to the invention, the curing agent comprises an organic amine compound having at least two primary amine functions linked together by a hydrocarbon chain which is optionally interrupted by at least one heteroatom, said amine compound exhibiting irregularities in the chemical structure of its hydrocarbon chain. The invention also provides a method of preparing paint compositions, a method of forming a paint coating on the surface as well as a coated metal surface. The solutions produced by the invention are stable over extended periods of time, and the anti-corrosive erect of the paint compositions is good even at very low concentrations of the polyaniline.

Corrosion resistant coatings

Polyphenylene ether blends and a process for the preparation thereof

Polymeric compositions are disclosed comprising protonated, electrically conducting polyaniline; cyclic organic compounds capable of forming ring-ring interactions with the six-membered rings of the polyaniline and hydrogen bonding with the NH groups of the polyaniline; and anionic surface active additives. According to the invention, no particular requirements are posed for the counter-ions of polyaniline, which allows for the use of non-functionilized counter-ions. The conducting polyaniline complexes of the invention are processible in the fluid-phase and exhibit significantly improved electrical properties.

Processible electrically conducting polyaniline compositions and

Compositions are disclosed comprising electrically conducting polyaniline and particular substituted aromatic compounds that simultaneously form hydrogen bonds and ring-ring interactions with, respectively, the NH-groups and the six-membered rings of the conducting polyanilines. The present conducting polyaniline compositions show drastically enhanced processibility and their blends with insulating or semiconducting materials exhibit significantly improved electrical properties.

Electrically conducting compositions

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

Processible electrically conducting polyaniline compositions

Electrically conductive compositions and methods for their preparation

Growing community of inventors

Helsinki, Finland

Olli Ikkala