Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Use of phthalocyanines as marking substances for liquids
The present invention relates to the use of specific phthalocyanines which bear substituents on the basic phthalocyanine structure bonded via methylene groups as markers for liquids, especially mineral oils, to liquids, especially mineral oils which comprise at least one such phthalocyanine as a marker, and also to novel specific phthalocyanines which bear substituents on the basic phthalocyanine structure bonded via methylene groups.
BASF Aktiengesellschaft
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C10L C09B C10L C10N C10N C10N C07D C10L C10M C10N C10N C09B C10L C10N C10M C10M C09B C10M
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Thomas Christos Ruediger Sophia
Gessner Vamvakaris Sens Ebert