Azo dyes for thermal transfer printing

Details Azo dyes for thermal transfer printing Azo dyes for thermal transfer printing

1991-06-12

1993-04-20

Hess, B. Hamilton

Record receiver having plural interactive leaves or a colorless

Having plural interactive leaves

428195, 428913, 428914, B41M 5035, B41M 538

Patent

active

052043126

ABSTRACT:
Azo dyes suitable for thermal transfer printing have the formula ##STR1## in which the substituents have the following meanings: R.sup.1 is H, amino, hydroxyl or C.sub.1 -C.sub.3 -alkyl, R.sup.2 is H, acetyl, carbamoyl or cyano, R.sup.3 is .omega.-phenoxy-, .omega.-tolyloxy-, .omega.-benzyloxy- or .omega.-cyclohexyloxy-C.sub.1 -C.sub.12 -alkyl whose carbon chain may be interrupted by one or two of the following nonadjacent members --O--, --CO--, --O--CO-- or --CO--O-- and which may carry one or two of the following substituents: halogen, hydroxyl, C.sub.1 -C.sub.2 -alkyl, phenyl or cyclohexyl; R.sup.4 and R.sup.5 are each H, halogen, cyano, nitro, trihalomethyl, or a radical of the formula --CO--H, --CO--R.sup.6, --O--CO--R.sup.6, --CO--OR.sup.6, --SO--OR.sup.6, --O--SO--OR.sup.6, --CO--NR.sup.7 R.sup.8, --O--CO--NR.sup.7 R.sup.8, --SO.sub.2 --NR.sup.7 R.sup.8 or --O--SO.sub.2 --NR.sup.7 R.sup.8 where R.sup.6 is C.sub.1 -C.sub.12 -alkyl or .omega.-phenoxy-, .omega.-tolyloxy-, .omega.-benzyloxy- or .omega.-cyclohexyloxy-C.sub.1 -C.sub.12 -alkyl where the carbon chain may in each case be interrupted by one or two oxygen atoms in ether function, R.sup.7 is C.sub.1 -C.sub.12 -alkyl and R.sup.8 is H or has one of the meanings of R.sup.7.

REFERENCES:
patent: 4632983 (1986-12-01), Lamm
Japan Abstract, JP-A-012-393, Jan. 20, 1986.
Chemical Abstracts, 106: 166337x, & JP-A-244,595, Oct. 30, 1986, Y. Murata, et al., "Pyridoneazo Dyes for Thermal-Transfer Recording".
Japan Abstract, JP-A-262,191, Nov. 20, 1986.
Japan Abstract, JP-A-199,997, Sep. 4, 1986.
Japan Abstract, JP-A-283,595, Dec. 13, 1986.

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