Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1986-02-27
1988-01-05
Yarbrough, Amelia Burgess
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
427150, 427151, C09D 1100
Patent
active
047174234
ABSTRACT:
Mixtures of dye precursors which contain (a) the lactone of 2-carboxy-4,4'-bisdimethylaminobenzhydrol (I) and (b) crystal violet lactone and/or one or more fluoran lactones of the formula ##STR1## where R.sup.1 is alkyl, R.sup.2 is alkyl, phenalkyl, unsubstituted or substituted phenyl or cycloalkyl, or ##STR2## is pyrrolidinyl, piperidinyl or morpholinyl, R.sup.3 is H or tert.-butyl, R.sup.4 is H or methyl, R.sup.5 is H, alkyl or phenalkyl and R.sup.6 is H, alkyl, phenalkyl, cycloalkyl or unsubstituted or substituted phenyl, or ##STR3## is pyrrolidinyl, piperidinyl or morpholinyl, possess improved lightfastness in pressure-sensitive recording systems.
REFERENCES:
patent: 3525630 (1970-08-01), Phillips
Chemical Abstract No. CA79(14):80343h, German Patent No. DE 2264033, Jul. 5, 1973.
Abrahart, "Stabilised leuco dyes as colour formers", Chemistry and Industry, Jun. 16, 1973, p. 583.
Kondo et al., "Phthalide color formers", Chemical Abstracts, vol. 84, No. 4, Jan. 1976, p. 116.
Miki et al., "Pressure-sensitive copying paper", Chemical Abstracts, vol. 80, No. 10, Mar. 11, 1974, p. 410.
Dyllick-Brenzinger Rainer
Mayer Udo
Oberlinner Andreas
BASF - Aktiengesellschaft
Burgess Yarbrough Amelia
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