Marked mineral oils and method of marking mineral oils with basi

Details Marked mineral oils and method of marking mineral oils with basi Marked mineral oils and method of marking mineral oils with basi

1991-01-09

1992-09-08

Clingman, A. Lionel

Mineral oils: processes and products

Products and compositions

208 12, 208 16, C10L 100

Patent

active

051455730

ABSTRACT:
Marked mineral oils containing basic dyes which have at least two, optionally substituted, amino groups and which, on addition of a protogenic acid and, optionally, a metal halide, experience a bathochromic shift of their absorption maximum and an increase in absorbance, and a method of marking mineral oils with basic dyes.

REFERENCES:
patent: 2046365 (1936-07-01), Cassidy et al.
patent: 4479899 (1984-10-01), Hamprecht
patent: 4904765 (1990-02-01), Derber et al.

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