Process and apparatus for utilizing oxygen-containing polymers

Details Process and apparatus for utilizing oxygen-containing polymers Process and apparatus for utilizing oxygen-containing polymers

C - Chemistry, Metallurgy

08

J

C08J 11/00 (2006.01) C08J 11/06 (2006.01) C08J 11/08 (2006.01) C08L 67/00 (2006.01) C08L 67/04 (2006.01)

Patent

CA 2662118

A process is described for converting and utilizing oxygen-containing polymers to form hydrogen and alkali metal carbonates, in which the polymers are brought into intimate contact with a melt mixture of alkali metal hydroxide and alkali metal carbonate to form hydrogen and alkali metal carbonate, and the alkali metal carbonate formed is removed from the reaction mixture during the reaction and alkali metal hydroxide is optionally metered in. The reaction is preferably carried out under conditions which lie on a point on the Liquidus line of the system. It is possible in accordance with the invention to process natural or synthetic polymers, for example polyester, polyether, wood, etc. It is particularly suitable for processing fiber-reinforced composite materials. Also described is an apparatus for performing the process according to the invention.

L'invention concerne un procédé de transformation et d'utilisation de polymères contenant de l'oxygène, avec formation d'hydrogène et de carbonates alcalins, dans lequel les polymères sont mis en contact intime avec un mélange en fusion d'hydroxyde alcalin et de carbonate alcalin, donnant de l'hydrogène et du carbonate alcalin, et dans lequel le carbonate alcalin produit à partir du mélange réactionnel lors de la transformation est enlevé et un supplément d'hydroxyde alcalin est ajouté s'il y a lieu. La réaction se fait de préférence dans des conditions qui se situent en un point de la courbe de liquidus du système. L'invention permet de transformer des polymères naturels ou synthétiques tels que, par exemple, des polyesters, des polyéthers, du bois, etc. Le procédé est particulièrement adapté à la transformation de matériaux composites renforcés par des fibres. L'invention concerne en outre un appareil permettant de mettre en AEuvre le procédé de l'invention.

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