Patents by Inventor Daniel Shaw James

Daniel Shaw James has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Disperse mono- and bisazo dyes derived from 2-amino-4,5-dicyanoimidazole
    Patent number: 4097475
    Abstract: Azo dyes free of water solubilizing groups having the formula ##STR1## WHEREIN R.sub.1 is C.sub.1-4 alkyl, --CH.sub.2 --CH.dbd.CH.sub.2, ##STR2## --(CH.sub.2).sub.n R.sub.8, C.sub.1-4 alkyleneCN, C.sub.2 H.sub.4 OR.sub.7, --CH.sub.2 --CH.dbd.CH--R.sub.8, --C.sub.2 H.sub.4 CONH.sub.2, --C.sub.2 H.sub.4 CONHC.sub.1-4 alkyl, --C.sub.2 H.sub.4 CON(C.sub.1-4 alkyl).sub.2 and --C.sub.2 H.sub.4 CO.sub.2 C.sub.1-4 alkyl; A is a coupling component selected from: a 5- or 6-membered heterocycle consisting of 5-aminopyrazole, 5-pyrazolone, barbituric acid, 6-hydroxypyrid-2-one, 4-hydroxycoumarin and 1,2-dialkylindole; a 1- or 2-naphthol group and an aromatic amine of the formula ##STR3## W is 1,4-naphthylene or ##STR4## R.sub.2 is H, F, Cl, C.sub.1-4 alkyl, OC.sub.1-4 alkyl; R.sub.3 is cyclohexyl or C.sub.1-14 alkylene-R.sub.9 ; R.sub.2 and R.sub.3 together with the nitrogen atom optionally form a 6-membered ring optionally substituted with --OH, OC.sub.2 H.sub.4 CN or OCOC.sub.1-5 alkyl; R.sub.4 is H, ##STR5## R.sub.
    Type: Grant
    Filed: April 3, 1974
    Date of Patent: June 27, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Daniel Shaw James
  • Bleedfast phthalocyanine dyes for paper
    Patent number: 4036585
    Abstract: The novel copper phthalocyanine-based compound ##STR1## WHERE N IS AN AVERAGE NUMBER OF 3 TO 4, A IS 0 TO 3 BUT LESS THAN N, AND CPC is copper phthalocyanine, and its acid solutions are blue dyes particularly for paper and have excellent bleedfastness. The compound is prepared by reacting copper phthalocyanine sulfonyl chloride with the cyanoamino compounds formed from the reaction between acrylonitrile and ethylenediamine.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: July 19, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Daniel Shaw James, Vincent Gerard Witterholt
  • Yellow to orange disazo cationic dyes containing two heterocyclic quaternary ammonium groups
    Patent number: 3987022
    Abstract: Biscationic disazo dyes having good exhaust and buildup on acid-modified BCF nylon fibers as well as good lightfastness and wetfastness on such fibers; and a process for dyeing nylon therewith at a pH of about 4 to 7. The dyes have the formula: ##SPC1##WhereinX is selected from --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --NH--, --O--, --OCH.sub.2 (CH.sub.2).sub.1.sub.-2 O--, --OCH.sub.2 CH(OH)CH.sub.2 O--, --SO.sub.2 --, --S--, --S--S--, --NHCO--, and --NHCONH--;R.sub.1 is selected from H, CH.sub.3, C.sub.2 H.sub.5, Cl, and Br;R.sub.2 is selected from H, alkyl, alkoxy, Cl, NHCO-alkyl, and NHCOC.sub.6 H.sub.5 ;R.sub.3 is selected from H, alkyl, and alkoxy;Y.sup.+ is selected from ##EQU1## whereinn is 0 or 1;Z is H when n is 0 and Z is OH when n is 1;Q.sup.+ is selected from NR.sub.4 R.sub.5 R.sub.6, and NHCOCH.sub.2 NR.sub.4 R.sub.5 R.sub.6 ;R.sub.4 and R.sub.5 together with the nitrogen atom form a piperidinium pyrrolidinium, or morpholinium ring, or, together with R.sub.6, form a pyridinium ring;R.sub.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: October 19, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Daniel Shaw James