Certain naphthofurans and method for their manufacture

The invention relates to specific naphthofurans which are useful as cryochromic substances e.g. for measuring the temperature, pH value or radiation field.

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Bibliographic Details
Main Authors BALLI; HEINZ, EGGER; ALBERT
Format Patent
LanguageEnglish
Published 08.11.1977
Subjects
ADHESIVES
CHEMISTRY
COLOUR PRINTING
DYES
HETEROCYCLIC COMPOUNDS
LAKES
LINING MACHINES
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC CHEMISTRY
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
PERFORMING OPERATIONS
PHYSICS
POLISHES
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
TRANSPORTING
TYPEWRITERS
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Summary:The invention relates to specific naphthofurans which are useful as cryochromic substances e.g. for measuring the temperature, pH value or radiation field.
Bibliography:Application Number: US19760673240