Victor A Tullio

US Patent:

40638804, Dec 20, 1977

Filed:

Nov 6, 1975

Appl. No.:

5/629549

Inventors:

Victor Tullio - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C09B 2700
C09B 3102
D06P 102

US Classification:

8 41R

Abstract:

An improved aqueous-organic solvent solution, having a pH between 10 and 13, of the disazo dye ##STR1## wherein X is a cation, preferably the sodium or lithium cation, having therein a combination of I. 0. 1% to 10%, by total weight, of a particular anionic surfactant, and Ii. 0. 1% to 10. 0%, by total weight, of a particular nonionic surfactant.

US Patent:

39574253, May 18, 1976

Filed:

Apr 19, 1974

Appl. No.:

5/462395

Inventors:

Victor Tullio - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

D06P 100
D06P 139

US Classification:

8 41B

Abstract:

An improved aqueous-organic solvent solution, having a pH between 10 and 13, of the disazo dye ##SPC1## Wherein X is a cation, preferably the sodium or lithium cation, the improvement comprising the presence, in combination, of I. 0. 1% to 10%, by total weight, of a particular anionic surfactant, and Ii. 0. 1% to 3. 0%, by total weight, of a particular nonionic surfactant.

US Patent:

43148166, Feb 9, 1982

Filed:

May 30, 1980

Appl. No.:

6/154868

Inventors:

Victor Tullio - Wilmington DE

Assignee:

Mobay Chemical Corporation - Pittsburgh PA

International Classification:

D06P 6700

US Classification:

8527

Abstract:

A new dye based upon N-alkylated or N-hydroxyalkylated 8-amino-1-naphthol-3,6-disulfonic acid and 4,4'-diaminostilbene-2,2'-disulfonic acid, a procedure for synthesizing it and a procedure for utilizing it for coloring cellulosic substrates is disclosed. The naphthol compound is alkylated or hydroxyalkylated and coupled with the isolated tetrazonium salt of the diamine, and in a preferable embodiment sufficient of the sulfonic acid groups are neutralized to render the final dye water soluble. The procedure is preferably conducted in aqueous medium, and the substitution of the amino group of the naphthol compound is preferably effected with lower dialkyl sulfates or epoxides. The dye is particularly suitable for dyeing paper.

US Patent:

40146464, Mar 29, 1977

Filed:

Mar 22, 1976

Appl. No.:

5/669470

Inventors:

Victor Tullio - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C09B 100
C09B 562
D06P 120

US Classification:

8 39R

Abstract:

Improved concentrated dye solutions comprising anionic monosulfonated anthraquinone dye, the cations including alkanolammonium cations, in a mixed solvent of water and an inert organic cosolvent, the improvement comprising the addition thereto of about 0. 03 to 0. 20 part by weight, per part of dye of ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, or N-hydroxyethylethylenediaminetriacetic acid, said dye solution containing no more than about 0. 2 percent, based on total solution weight, of cations other than alkanolammonium cations.

US Patent:

39634183, Jun 15, 1976

Filed:

Aug 1, 1974

Appl. No.:

5/493972

Inventors:

Victor Tullio - Wilmington DE

Assignee:

E. I. Du pont de Nemours and Company - Wilmington DE

International Classification:

C09B 3106
D06P 139
C09B 3108

US Classification:

8 41B

Abstract:

A hard water-tolerant, storage stable dye solution which comprises A. about 10 to 25 percent of a dye of the formula ##SPC1## wherein M is a solubilizing cation and R is --CH. sub. 2 CH. sub. 2 OH, --CH. sub. 2 CH(CH. sub. 3)OH or --CH. sub. 2 CH(C. sub. 2 H. sub. 5)OH, b. about 5 to 25 percent of N-methyl-2-pyrrolidone, C. about 0. 02 to 0. 3 part of ethylenediaminetetraacetic acid anion per part of said dye, D. lithium and/or akanolammonium cations in an amount sufficient to provide a pH of about 6. 5 to 12, and E. at least about 50 percent water.