Abstract: A pressure- or heat-sensitive recording material which, in its color reactant system, contains as a color developer for the color former, at least one substituted resorcinol compound of the formula ##STR1## or a corresponding zinc or aluminium salt, in which R is a carboxyl- or aroyl-free substituent which has a positive Hammett para-sigma value and which is capable of forming, together with the adjacent hydroxyl group, an intramolecular hydrogen bond in the form of a six-membered ring.

Abstract: Chromogenic compounds of the formula ##STR1## wherein each of Y.sub.1 and Y.sub.2 independently represents an aminosubstituted phenyl radical of the formula ##STR2## a 3-indolyl radical of the formula ##STR3## a 3-carbazolyl radical of the formula ##STR4## and Q represents alkyl of 1 to 12 carbon atoms or unsubstituted or substituted aryl or aralkyl, while each of X.sub.1 and X.sub.2 independently represents hydrogen, alkyl containing not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy, or X.sub.1 and X.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic radical, X.sub.3 represents hydrogen, halogen, nitro, lower alkyl or lower alkoxy, each of R and Z.sub.

Abstract: Carbazolylmethane compounds of the formula ##STR1## wherein one of Y.sub.1, Y.sub.2 and Q represents a 3-carbazolyl radical of the formula ##STR2## and each of the other two independently represents an amino-substituted phenyl radical of the formula ##STR3## a 3-indolyl radical of the formula ##STR4## These compounds are particularly suitable for use as color formers in pressure-sensitive or heat-sensitive recording material.

Abstract: Fluoran compounds of the formula ##STR1## wherein one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents n-alkyl having 6 to 12 carbon atoms and the other R's, independently of each other, represent hydrogen, alkyl having 1 to 12 carbon atoms, alkoxyalkyl having 2 to 8 carbon atoms or benzyl optionally substituted in the ring by nitro, halogen or alkyl having 1 to 6 carbon atoms.The fluoran compounds are particularly useful as color formers which give intense dark green color when they are brought into contact with an electron-accepting co-reactant.

Abstract: A pressure-sensitive or heat-sensitive recording material which comprises in its color reactant system, as developer for the color former, at least one compound of the formula ##STR1## wherein the ring Z is a heterocyclic radical which does not contain a keto group adjacent to the linking carbon atom, X is the direct bond, --O--, --CHR--, --NR--, --CONR--, --SO.sub.2 NR--, --Nr.sub.1 --CO--NR.sub.2 --,--NR.sub.1 --CS--NR.sub.2 -- or --NR.sub.1 --SO.sub.2 --NR.sub.2 --, wherein each of R, R.sub.1 and R.sub.2 independently is hydrogen, alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, cyano or lower alkoxy, or is benzyl, phenyl, or benzyl or phenyl each of which is substituted by halogen, methyl or methoxy, Q is carbon or an unsubstituted or substituted hydrocarbon radical, Y is halogen and m is 1 to 3. The grouping --O--Y.sub.m is preferably --C(Hal).sub.3, wherein Hal is halogen.

Abstract: A benzopyranothiazole of the formula ##STR1## wherein each of R.sub.1 and R.sub.2 independently represents hydrogen, alkyl of not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy, or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic radical or a N-carbazolyl radical, Q represents hydrogen, lower alkyl, benzyl or groups of the formulae (1a) or (1b) ##STR2## each of X, X.sub.1 and X.sub.2 represents hydrogen, halogen, lower alkyl or lower alkoxy, each of Y.sub.1, Y.sub.2, Y'.sub.1 and Y'.sub.

Abstract: A pressure-sensitive or heat-sensitive recording material which contains in its color reactant system, as developer for the color former, at least one compound of the formula ##STR1## wherein X is the direct bond or ##STR2## each of R.sub.1, R.sub.2 and R.sub.3 independently is hydrogen or unsubstituted or substituted alkyl, aryl or aralkyl, or R.sub.1 and R.sub.3, together with the nitrogen atom to which they are attached, are a 5- or 6-membered heterocyclic radical, Q is carbon or an unsubstituted or substituted hydrocarbon radical, Y is halogen, and m is 1 to 3. The grouping --Q--Y.sub.m is preferably --C(Hal).sub.3, wherein Hal is halogen.

Abstract: Fluoran compounds of the formula ##STR1## wherein one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents n-alkyl having 6 to 12 carbon atoms and the other R's, independently of each other, represent hydrogen, alkyl having 1 to 12 carbon atoms, alkoxyalkyl having 2 to 8 carbon atoms or benzyl optionally substituted in the ring by nitro, halogen or alkyl having 1 to 6 carbon atoms.The fluoran compounds are particularly useful as color formers which give intense dark green color when they are brought into contact with an electron-accepting co-reactant.

Abstract: A 3-indolyl-3-bis-aminophenyl-phthalide compound of the formula ##STR1## wherein R.sub.1 represents alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, cycloalkyl, or unsubstituted or substituted phenyl or benzyl wherein the substituents are halogen, nitro, lower alkyl or lower alkoxy,R.sub.2 represents hydrogen, alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, cycloalkyl, or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, orR.sub.1 and R.sub.2 together with the nitrogen atom linking them represent a 5- or 6-membered heterocyclic radical,X.sub.1 and X.sub.2 independently of one another represent hydrogen, lower alkyl, cycloalkyl, benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, or acyl having 1 to 8 carbon atoms, and X.sub.

Abstract: A pressure-sensitive or heat-sensitive recording material which contains in its color reactant system, as developer for color formers, at least one compound of the formula ##STR1## wherein Z is the radical of a reactive organic methylene or methyl compound or a radical of the formula ##STR2## wherein each of A.sub.1 and A.sub.2 independently is carbon or unsubstituted or substituted alkylene, arylene or aralkylene, each of X.sub.1 and X.sub.2 is halogen, cyano or nitro, each of D.sub.1, D.sub.2 and E independently is unsubstituted or substituted alkyl, aralkyl, aryl, alkanoyl, alkylsulfonyl, aroyl, arylsulfonyl, cyanoamidino, or is the group ##STR3## wherein each of R.sub.1 and R.sub.2 independently is hydrogen or unsubstituted or substituted alkyl, aryl or aralkyl, whilst D.sub.1 and D.sub.2 are also hydrogen, or each of the pairs of substituents (R.sub.1 and R.sub.2) and (D.sub.

Abstract: Chromogenic compounds of the formula ##STR1## wherein each of Y.sub.1 and Y.sub.2 independently represents an amino-substituted phenyl radical of the formula ##STR2## a 3-indolyl radical of the formula ##STR3## or a 3-carbazolyl radical of the formula ##STR4## and Q represents alkyl of 1 to 12 carbon atoms or unsubstituted or substituted aryl or aralkyl, while each of X.sub.1 and X.sub.2 independently represents hydrogen, alkyl containing not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy, or X.sub.1 and X.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic radical, X.sub.3 represents hydrogen, halogen, nitro, lower alkyl or lower alkoxy, each of R and Z.sub.

Abstract: A pressure- or heat-sensitive recording material which contains as color former at least one 2,2-diarylchromeno compound of the formula ##STR1## wherein V.sub.1 and V.sub.2, each independently of the other, represent hydrogen, halogen, lower alkyl or lower alkoxy,Y.sub.1 and Y.sub.2, each independently of the other, represent hydrogen, --O--R.sub.1 or ##STR2## X.sub.1 and X.sub.2 , each independently of the other, represent hydrogen, alkyl of up to 12 carbon atoms which is unsubstituted or substituted by halogen, or represent benzyl, phenyl, or benzyl or phenyl which is substituted by halogen, nitro, lower alkyl, lower alkoxy or the amino group ##STR3## and the ring A is unsubstituted or substituted by halogen, nitro, lower alkyl, --O--R.sub.5 or ##STR4## or contains a fused benzene ring, and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.

Abstract: Carbazolylmethane compounds of the formula ##STR1## wherein one of Y.sub.1, Y.sub.2 and Q represents a 3-carbazolyl radical of the formula ##STR2## and each of the other two independently represents an amino-substituted phenyl radical of the formula ##STR3## a 3-indolyl radical of the formula ##STR4## a 3-carbazolyl radical of the formula ##STR5## or a 3-carbazolyl radical of the formula (1a), and Q also represents hydrogen, alkyl of 1 to 12 carbon atoms, alkenyl containing not more than 12 carbon atoms, aryl, aralkyl or a further heterocyclic radical, while each of X.sub.1 and X.sub.2 independently represents hydrogen, alkyl containing not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy, or X.sub.1 and X.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic radical, X.sub.

Abstract: Thiazolylphthalide compounds of the general formula ##STR1## wherein A represents a p-aminophenyl readical of formula ##STR2## or a 3-indolyl radical of formula ##STR3## or a 2-thiazolyl radical of formula ##STR4## each of R.sub.1, R.sub.2, X.sub.1, X.sub.2, R.sub.1 ' and R.sub.2 ' independently represents hydrogen, alkyl of 1 to 12 carbon atoms, alkoxyalkyl of 2 to 8 carbon atoms, cycloalkyl of 5 or 6 carbon atoms, or unsubstituted or substituted benzyl or phenyl, oreach pair of substituents R.sub.1 and R.sub.2, X.sub.1 and X.sub.2 or R.sub.1 ' and R.sub.2 ' together with the nitrogen atom to which they are attached, independently represents a heterocyclic ring,each of Y.sub.1 and Y.sub.1 ' represents hydrogen, alkyl of 1 to 12 carbon atoms, cycloalkyl or 5 or 6 carbon atoms or unsubstituted or substituted benzyl or phenyl,V.sub.1 represents hydrogen, alkyl of 1 to 12 carbon atoms, alkoxy of 1 to 12 carbon atoms or acyloxy of 2 to 12 carbon atoms,Z.sub.

Abstract: Carbazolylmethane compounds of the formula ##STR1## wherein one of Y.sub.1, Y.sub.2 and Q represents a 3-carbazolyl radical of the formula ##STR2## and each of the other two independently represents an amino-substituted phenyl radical of the formula ##STR3## a 3-indolyl radical of the formula ##STR4## a 3-carbazolyl radical of the formula ##STR5## or a 3-carbazolyl radical of the formula (1a), and Q also represents hydrogen, alkyl of 1 to 12 carbon atoms, alkenyl containing not more than 12 carbon atoms, aryl, aralkyl or a further heterocyclic radical, while each of X.sub.1 and X.sub.2 independently represents hydrogen, alkyl containing not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy, or X.sub.1 and X.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic radical, X.sub.

Abstract: A 3-indolyl-3-bis-aminophenyl-phthalide compound of the formula ##STR1## wherein R.sub.1 represents alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, cycloalkyl, or unsubstituted or substituted phenyl or benzyl wherein the substituents are halogen, nitro, lower alkyl or lower alkoxy,R.sub.2 represents hydrogen, alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, cycloalkyl, or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, orR.sub.1 and R.sub.2 together with the nitrogen atom linking them represent a 5- or 6-membered heterocyclic radical,X.sub.1 and X.sub.2 independently of one another represent hydrogen, lower alkyl, cycloalkyl, benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, or acyl having 1 to 8 carbon atoms, and X.sub.

Abstract: A pressure- or heat-sensitive recording material which contains as color former at least one 2,2-diarylchromeno compound of the formula ##STR1## wherein V.sub.1 and V.sub.2, each independently of the other, represent hydrogen, halogen, lower alkyl or lower alkoxy,Y.sub.1 and Y.sub.2, each independently of the other, represent hydrogen, --O--R.sub.1 or ##STR2## X.sub.1 and X.sub.2, each independently of the other, represent hydrogen, alkyl of up to 12 carbon atoms which is unsubstituted or substituted by halogen, or represent benzyl, phenyl, or benzyl or phenyl which is substituted by halogen, nitro, lower alkyl, lower alkoxy or the amino group ##STR3## and the ring A is unsubstituted or substituted by halogen, nitro, lower alkyl, --O--R.sub.5 or ##STR4## or contains a fused benzene ring, and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.

Abstract: Phthalides of the formula ##STR1## wherein R.sub.1 and R.sub.2, independently of the other, represent hydrogen, alkyl with 1 to 12 carbon atoms, alkoxyalkyl with 2 to 8 carbon atoms, cycloalkyl with 5 or 6 carbon atoms, benzyl or phenyl, X represents alkyl with 1 to 12 carbon atoms, alkoxy with 1 to 12 carbon atoms or acyloxy with 2 to 12 carbon atoms, Y represents alkyl with 2 to 12 carbon atoms, alkoxy with 3 to 12 carbon atoms or acyloxy with 2 to 12 carbon atoms, Z represents hydrogen, alkyl having 1 to 12 carbon atoms or phenyl, U represents alkyl having 3 to 12 carbon atoms, benzyl or cyanoethyl, or may also represent W when R.sub.1 and R.sub.2 both are benzyl, W represents hydrogen, methyl or ethyl and n is 1 or 2, the benzene rings A and B may be substituted by an amino group optionally substituted by alkyl with 1 to 6 carbon atoms and the benzene ring B may also be substituted by nitro or halogen.

Abstract: A pressure- or heat-sensitive recording material which contains as color former at least one chromano compound of the general formula ##STR1## wherein X.sub.1, X.sub.2, Z.sub.1 and Z.sub.2, each independently of the other, represent the group of the formula ##STR2## in which V.sub.1 and V.sub.2, each independently of the other, represent hydrogen, halogen, lower alkyl or lower alkoxy, andY.sub.1 and Y.sub.2, each independently of the other, represent hydrogen, --O--R.sub.1 or ##STR3## and the ring A is unsubstituted or substituted by halogen, nitro, lower alkyl, --O--R.sub.3 or ##STR4## or contains a fused benzene ring, while R.sub.1, R.sub.2, R.sub.3 and R.sub.4, each independently of the other, represent hydrogen, alkyl of not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represent cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, nitro, lower alkyl or lower alkoxy, oreach of the pair of substituentsR.sub.

Abstract: A chromenoindole compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another represent hydrogen, alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy; cycloalkyl, phenyl, benzyl, or phenyl or benzyl which are substituted by halogen, lower alkyl or lower alkoxy, or R.sub.1 and R.sub.