Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1994-01-19
1995-06-20
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C08K 516
Patent
active
054261430
ABSTRACT:
The invention is in the field of intrinsically thermochromic material. We have found that infrared absorbing dyes of the azamethine type have intrinsically thermochromic properties. The use of said dyes as thermochromic material has the advantage that they can be thermally activated by infrared irradiation. Irradiation of such material with a laser causes a color change that can be used in imaging and optical data storage.
The thermochromic dyes can be mixed with polymeric material and from the resulting polymer composition films can be made. If the dye contains polymerizable groups, it may be covalently incorporated into the polymer.
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J. Chem. Soc. Perkin Trans. II, 1987, pp. 815-818.
J. Organic Chem., vol. 42, No. 2, 1977 pp. 297-330.
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Bello Kasali A.
de Wit Paulus P.
Erdhuisen Erwin W. P.
Griffiths John
Akzo Nobel N.V.
Cheng Wu C.
Fennelly Richard P.
Morris Louis A.
Schofer Joseph L.
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