Basic disazo dyes having two 2-hydroxy-3-substituted carbamoylnaphthyl-1-azophenyl groups for dyeing paper

Claim 2

In a process for the production of colored paper comprising (A) incorporating a dye composition into paper stock and forming paper from said paper stock or (B) applying a dye composition to paper sheet, the improvement wherein said dye composition is or comprises a dye of the formula wherein each R, r 1 and R 2 is independently hydrogen, hydrocarbyl or substituted hydrocarbyl or R 1 and R 2 taken together and with the nitrogen atom to which they are joined form a saturated or partially saturated heterocyclic group, each K.sup.⊕ is independently an ammonium, substituted ammonium, hydrazinium, substituted hydrazinium, cycloimmonium or substituted cycloimmonium group, each X is independently a direct bond or a divalent radical, each X 1 is independently a divalent radical,

Claim 3

Y is a direct bond, alkylene, substituted alkylene, --S--, --O--, --NH--CO--NH-- or --CH=CH--, and each A.sup.⊖ is independently an anion, wherein each of Rings Z 1 , Z 2 , Z 3 , Z 4 , Z 5 and Z 6 is independently further unsubstituted or further substituted.

Claim 4

Y is a direct bond, alkylene, substituted alkylene, --S--, --O--, --NH--CO--NH-- or --CH=CH--, and each A.sup.⊖ is independently an anion, wherein each of Rings Z 1 , Z 2 , Z 3 , Z 4 , Z 5 and Z 6 is independently further unsubstituted or further substituted.

Claim 5

A process according to claim 1 comprising incorporating a dye composition into paper stock and forming paper from said paper stock.

Claim 6

A process according to claim 1 comprising applying a dye composition to paper sheet.

Claim 7

A process according to claim 1 wherein said dye is a dye of the formula ##STR192## wherein each R is independently hydrogen or methyl, each X is independently straight or branched chain alkylene of 1 to 3 carbon atoms, Y 1 is straight or branched chain alkylene of 1 to 4 carbon atoms, each K is independently ##STR193## wherein each R 1 and R 2 is independently hydrogen, alkyl of 1 to 4 carbon atoms or alkyl of 1 to 4 carbon atoms substituted by chloro, hydroxy, cyano or phenyl or R 1 and R 2 taken together and with the nitrogen atom to which they are joined are pyrrolidino, piperidino, morpholino, aziridino or piperazino, each R 3 , R 4 , R 7 , R 8 and R 9 is independently alkyl of 1 to 4 carbon atoms or alkyl of 1 to 4 carbon atoms substituted by chloro, hydroxy, cyano or phenyl or R 3 and R 4 taken together and with the nitrogen atom to which they are joined are pyrrolidinium, piperidinium, morpholinium, aziridinium or piperazinium or R 7 and R 8 taken together and with the nitrogen atom to which they are joined are pyrrolidinium, piperidinium, morpholinium, aziridinium or piperazinium or R 7 , r 8 and R 9 taken together and with the nitrogen atom to which they are joined are pyridinium or ##STR194## each R 5 and R 6 is independently hydrogen, alkyl of 1 to 4 carbon atoms or alkyl of 1 to 4 carbon atoms substituted by chloro, hydroxy, cyano or phenyl, and each A.sup.⊖ is independently an anion.

Claim 8

A process according to claim 4 comprising incorporating a dye composition into paper stock and forming paper from said paper stock.

Claim 9

A process according to claim 4 comprising applying a dye composition to paper sheet.

Claim 10

A process according to claim 4 wherein said dye is a dye of the formula ##STR195##

Claim 11

A process according to claim 7 wherein Y 1 is --CH 2 --.

Claim 12

A process according to claim 8 wherein each X is independently --CH 2 CH 2 -- or --CH 2 CH 2 CH 2 --, each R is independently hydrogen or methyl, and each R 1 and R 2 is independently hydrogen, methyl, ethyl or 2-hydroxyethyl or R 1 and R 2 taken together and with the nitrogen atom to which they are joined are pyrrolidino.

Claim 13

A process according to claim 4 wherein said dye is a dye of the formula ##STR196##

Claim 14

A process according to claim 10 wherein Y 1 is --CH 2 --.

Claim 15

A process according to claim 11 wherein each X is independently --CH 2 CH 2 -- or --CH 2 CH 2 CH 2 --, each R is hydrogen, each of R 1 and R 2 is independently hydrogen, methyl or 2-hydroxyethyl or R 1 and R 2 taken together and with the nitrogen atom to which they are joined are pyrrolidino, each of R 3 , R 4 , R 7 , R 8 and R 9 is methyl or R 7 , R 8 and R 9 taken together and with the nitrogen atom to which they are joined are pyridinium, and each of R 5 and R 6 is hydrogen.

Claim 16

A process according to claim 4 wherein said dye is a dye of the formula ##STR197##

Claim 17

A process according to claim 13 wherein Y 1 is --CH 2 --.

Claim 18

A process according to claim 14 wherein each X is independently --CH 2 CH 2 -- or --CH 2 CH 2 CH 2 --, each R is independently hydrogen or methyl, each R 3 and R 4 is methyl, each R 5 and R 6 is hydrogen, and each R 7 , R 8 and R 9 is independently methyl, ethyl or 2-hydroxyethyl or R 7 and R 8 taken together and with the nitrogen atom to which they are joined are pyrrolidinium or piperidinium or R 7 , r 8 and R 9 taken together and with the nitrogen atom to which they are joined are pyridinium.

Claim 19

A process according to claim 15 wherein each X is --CH 2 CH 2 -- or --CH 2 CH 2 CH 2 --, each R is hydrogen or methyl, each R 7 is independently methyl, ethyl or 2-hydroxyethyl, and each R 8 and R 9 is independently methyl or ethyl or R 7 and R 8 taken together and with the nitrogen atom to which they are joined are pyrrolidinium or piperidinium or R 7 , r 8 and R 9 taken together and with the nitrogen atom to which they are joined are pyridinium.

Claim 20

A process according to claim 16 comprising incorporating a dye composition into paper stock and forming paper from said paper stock.

Claim 21

A process according to claim 16 comprising applying a dye composition to paper sheet.