Pressure sensitive material

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/02 (2006.01) C08G 61/12 (2006.01) C08G 77/14 (2006.01) G01L 1/24 (2006.01)

Patent

CA 2505596

A polymeric material which exhibits an optically detectable response to changes in pressure. The material includes an elastomer selected from the group of a polyurethane, a polyacrylate, and a silicone, in combination with a photochemical system. The photochemical System may be in the form of an exciplex or a fluorescence resonance energy transfer. Both photochemical systems are reversible processes. Synthesis of the elastomer and the photochemical System produce a material which forms an excited charge transfer complex when subject to an increase in pressure and a less excited charge transfer complex as pressure is lowered.

L'invention concerne une matière polymère présentant une réponse optiquement détectable à des changements de pression. Cette matière comprend un élastomère sélectionné dans un groupe comprenant un polyuréthanne, un polyacrylate, et un silicone, combiné à un système photochimique. Le système photochimique peut se présenter sous la forme d'un exciplexe ou d'un transfert d'énergie par résonance de fluorescence. Ces deux systèmes photochimiques sont des processus réversibles. La synthèse de l'élastomère et du système photochimique produit une matière qui forme un complexe de transfert de charge excité lorsqu'elle est soumise à une augmentation de pression, et un complexe de transfert de charge moins excité lorsque la pression diminue.

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