Pressure sensitive material

Details Pressure sensitive material Pressure sensitive material

2007-02-13

2007-02-13

Gorr, Rachel (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S085000

Reexamination Certificate

active

10290739

ABSTRACT:
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.

REFERENCES:
patent: 5142155 (1992-08-01), Mauze et al.
patent: 5307675 (1994-05-01), Mosharov et al.
patent: 5341676 (1994-08-01), Gouterman et al.
patent: 5359887 (1994-11-01), Schwab
patent: 5498549 (1996-03-01), Nagel et al.
patent: 5814833 (1998-09-01), Jenekhe
patent: 5854682 (1998-12-01), Gu
patent: 5965642 (1999-10-01), Gouterman et al.
patent: 2272514 (1994-05-01), None
patent: 9212424 (1992-07-01), None
patent: 97/47966 (1997-12-01), None
patent: 9957222 (1999-11-01), None
patent: 0146121 (2001-06-01), None
Szycher; Handbook of Polyurethanes;1999; pp. 18-1-18-6, 20-4.
Yang et al; Fluorescence energy transfer studies in a cross-linked polyurethane network; Can. J. Chem.; 1995; 1823-1830.
Iida et al; Cyclocondensation of Oxalyl Chloride with 1,2 gycols; Tetrahedron; vol. 49; No. 46; 1993; 10511-10530.
Hamatani, H., “Intermolecular Exciplex of Pyrene/N,N-Dimethylaniline in Supercritical Carbon Dioxide”, J. Phys. Chem., vol. 97 (1993) pp. 6332-6333.

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