Neste Oy

Valtion Teknillinen Tutkimuskeskus

Optatech Corporation

Coolbrook Oy

Jukka Seppala

Johan-Fredrik Selin

Soili Hellevi Peltonen

Mika Harkonen

Kari Hiltunen

Minna Malin

Jani Vuorenpaa

Veli-Matti Purola

Christer Hans Bergstrom

Lars-Olof Pietila

Juhana Ruotoistenmaki

Tao Su

Jyrki Hakola

Jyrki Hiltunen

Sari Paavola

Tapio Hase

Lisbeth Ahjopalo

Janne Kylma

Elina Heikkila

A rotary machine type shock wave reactor suitable for thermal cracking of hydrocarbon-containing materials includes a casing, a rotor whose periphery contains an axial-flow blade cascade, and a directing rim, provided with at least two stationary vane cascades, adjoining an axial-flow rotor cascade, wherein the casing substantially encloses the periphery of the rotor and the directing rim. The cascades are configured to direct feedstock containing process stream to repeatedly pass the cascades in a helical trajectory while propagating within the duct between the inlet and exit and to generate stationary shock-waves to heat the feedstock. The axial-flow rotor cascade is configured to provide kinetic energy and add velocity to feedstock containing process stream, and the stationary vanes located downstream the rotor cascade are configured to reduce the velocity of the stream and convert kinetic energy into heat. The reactor may also process carbohydrate-and glyceride-based feedstock, and gaseous biomass matter.

Process and rotary machine type reactor

Melt-processible poly (ester urethane) and a process for the preparation

Amorphous olefin co/ter-polymers

Thermoplasticized starch component and process for the preparation

Thermoplastic biodegradable polyester a process for the preparation

Starch derivatives grafted with aliphatic polyester, procedure for their

The present invention relates to a production method of lactic acid-based polyurethanes. In the first phase of the product ion, the monomeric lactic acid is polymerized into an oligomer, the molecular weight thereof being about 500 to 10,000. Next, the oligomer thus obtained is copolymerized with an isocyanate reacting with the free hydroxyl and carboxyl groups thereof into polyurethane with a high molecular weight. To make the oligomer react with diol prior to the copolymerization is unnecessary according to the invention. The lactic acid used need not be absolutely pure, and by modifying the process, various biodegradable end products can be obtained therefrom, which according to the invention are appropriate for the material of disposable packages, agricultural film or planting pots, or as a coating of fertilizer granules.

Method for producing lactic acid based polyurethane

Procedure for making copolymers of ethylene and long-chained alpha

Growing community of inventors

Helsinki, Finland

Jukka Seppala