U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Celebrity Inventors

Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 534/844 - Sulfonyl containing


Subclass of Class 534 - Organic compounds -- part of the class 532-570 series
Definition: Compounds which contain a -- group.
No. of patents: 37
Last issue date: 11/29/2005


NumberTitleIssue Date
6969759Colorant compositions
Disclosed is a colorant composition of the formula wherein R is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and wherein R can be joined to the phenyl moiety to form a ring, R′ is an arom...
11/29/2005
6045593Acid yellow dye and method for using same
The invention is a composition of matter useful as an acid yellow dye having formula (I) ##STR1## wherein: X is hydrogen or SO3- M+ ; M+ Na+, Li+, K+, NH4+
04/04/2000
5705676Chromogenic leuco redox-dye-releasing compounds for photothermographic elements
A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising: (a) a photosensitive silver halide; (b) a non-photosensitive, reducible source of silver; (c) a...
01/06/1998
5278291Hydroxyethylthio hydroxyethylamino-phenyl-azo and -azoxy dyestuffs
A process for the preparation of the sulphone of the formula ##STR1## consists in reductive cleavage of azo/azoxy dyestuffs of the formula ##STR2## where D is a radical of a diazo component from the benzene or naphthalene series. The invention a...
01/11/1994
5278293Azo dyestuffs and intermediate products for their preparation
Azo dyestuffs of the formula ##STR1## having the substituent meanings given in the description, are outstandingly suitable for dyeing and printing materials containing hydroxyl groups and amide groups....
01/11/1994
4978362Thermoplastic resin composition containing polyalkyleneoxy-substituted azo coloring agents having trifluoromethyl substituents
A thermoplastic resin composition is provided which contains a thermoplastic resin and a colorant in the form of a polyalkyleneoxy-trifluoromethyl aniline colorant provided in said thermoplastic resin in a minor amount sufficient to provide coloration to ...
12/18/1990
4889923AZO compounds containing cyano and vinyl-sulfone groups, a process for their preparation and their use as dyestuffs
Azo compounds corresponding to the general formula (1) ##STR1## in which m represents the number 1 or 2, the cyano groups being attached to D in the ortho-position relative to the azo group, n denotes the number 1 or 2, Y is the vinyl group or a ଲ-s...
12/26/1989
4810783Process for the preparation of azo dyestuffs having an aniline-type coupler by aminolysis of the appropriate ether group-containing compounds
An azo dyestuff of the formula ##STR1## wherein D=a diazo component, R1 and R2 =alkyl or aralkyl, R3 =H, R or OR1 and R4 =a hydrocarbon radical or acyl, which are prepared in a simple manner by aminolysis ...
03/07/1989
4602084Monoazo dyes containing a 4-substituted-2-azo-1,1'-diphenylsulfone component
Monoazo dyes of the formula ##STR1## in which K is the radical of a coupling component of the benzene or naphthalene series or of the heterocyclic series, and R is a ##STR2## --CO--R2 or --SO2 --O--R2 group in wh...
07/22/1986
4585460Reactive dyes, process for their preparation and use thereof: bis-vinyl or substituted ethyl sulphenyl azo reactive dyes for textiles
Reactive dyes of the formula ##STR1## wherein Y is a --CH.dbd.CH2 or --CH2 CH2 --X radical, in which X is a leaving group, and Z is hydrogen, halogen, C1 -C4 alkyl, C1 -C4 a...
04/29/1986
4431585Water-insoluble azo dyestuffs, processes for their manufacture and their use for dyeing and printing synthetic hydrophobic fiber material
Water-insoluble azo dyestuffs suitable for dyeing and printing synthetic hydrophobic fiber materials are produced by azo coupling and have the formula ##STR1## wherein D is free from ionic moieties and is an unsubstituted or substituted phenyl, ...
02/14/1984
4315857Process for the synthesis of azobenzene compounds having a cyano group in one or both of the ortho positions of the diazo component radical
A process for the synthesis of an azobenzene compound having a cyano group in one or both of the ortho positions of the diazo component radical comprising reacting the corresponding azobenzene compound having a chloro, bromo or iodo substituent in one or ...
02/16/1982
4313872Azo coupling in two-phase water-alcohol mixtures
Azo dyes are very simply made in high purity and very good yield by coupling a diazonium compound with a coupling compound in a mixture essentially of water with a simple alkanol having four to six carbons and soluble in water to the extent of not over ab...
02/02/1982
4307015Azo compounds having a 2-acyloxy-, alkoxy-, substituted alkoxy-or hydroxy-3-alkynyloxy or substituted alkenyloxy-propyl group
Compounds of the formula ##STR1## wherein D is a diazo component radical, K is the radical of a coupling component of the 1,4-phenylene or 1,4-naphthylene series, R1 is hydrogen; alkyl; or alkenyl; and when K is a coupling component radica...
12/22/1981
4268439Basic azo dyestuffs having benzylammoniumamine substituent in the coupling component
Basic azo dyestuffs which are free from sulfonic acid and carboxylic acid groups and correspond to the formula ##STR1## wherein the radical have the below mentioned meaning, water-solubility and drawing speed and are used for dyeing and printing of p...
05/19/1981
4259237Azo dyestuffs containing phenolic coupling group
Azo dyestuffs of the formula ##STR1## wherein R1 represents hydrogen or in some cases alkyl, aralkyl, aryl or cycloalkyl, R2 represents hydrogen or in some cases alkyl, alkenyl or aralkyl, R3 represents, inter alia, hydrog...
03/31/1981
4250089Process for diazotizing aromatic amines
The invention relates to a process for diazotizing aromatic amines which are not diazotizable, or only incompletely diazotizable, in aqueous media containing mineral acid. It is characterized in that the diazotization is effected by means of nitrosyl comp...
02/10/1981
4212642Transfer printing dyes
A process for printing flat-surface structures of manmade or regenerated polymer materials by the transfer printing process, which comprises the use of dyes of the formula ##STR1## wherein X represents hydrogen, halogen, or a lower alkylsulphone grou...
07/15/1980
4179436Monoazodyestuffs containing diphenamine and phenoxy components
Disperse dyestuffs of the formula ##STR1## wherein Z is an alkyl, aralkyl, cycloalkyl, or aryl radical and R1 represents H, NO2, CN, CF3, halogen, alkyl SO2 X1, SO2 NX2 X3
12/18/1979
4163013Diphenylamine-azo-hydrocarbylsulfonylphenyl dyestuffs
Disperse dyestuffs of the formula ##STR1## wherein Z represents an optionally substituted hydrocarbon radical, The azo group is in the meta-position or para-position relative to the amino group of the disphenylamine and the radical --OSO2 Z is ...
07/31/1979
4160764Water-insoluble monoazo-dyestuffs for synthetic fibrous materials
Azo-dyestuff of the formula ##STR1## in which D represents nitrophenylene, ##STR2## DINITRO-PHENYLENE, NITRO-CYANO-PHENYLENE, NITRO-CHLORO-PHENYLENE, NITRO-BROMO-PHENYLENE, TRICHLORO-PHENYLENE, NITRO-DICHLORO-PHENYLENE, DINITRO-CHLORO-PHENY...
07/10/1979
4152114Method of dyeing with dispersible azo anilino dyestuffs
A class of dispersible phenyl-azo-aniline dyestuffs corresponding to the formula ##STR1## wherein A is phenyl substituted by halogen, cyano, nitro, lower alkylsulphonyl, lower alkoxycarbonyl, di-lower-alkyl-carbamoyl or di-lower-alkyl-sulfamoyl,...
05/01/1979
4145342Nitro-diphenylamino-azo-phenyl dyestuffs containing a polyalkyeneoxy group
Disperse dyestuffs of the formula ##STR1## wherein Q1 and Q2 are hydrogen or the group V-(A-O)n Z, but do not at the same time represent hydrogen, A -- denotes an alkylene group, V -- denotes a direct bond or a bridge memb...
03/20/1979
4122026Liquid crystal mixtures
A nematic liquid crystal mixture comprises at least one nematic liquid crystal compound and an amount, sufficient to impart a positive DC anisotropy of at least about 15 to said mixture, of at least one liquid crystalline or potentially liquid crystalline...
10/24/1978
4119623Water-soluble diphenylamine-azo-sulfatoalkoxyphenyl dyestuffs
Dyestuffs, which in the form of the free acid of the formula ##STR1## wherein R1 denotes hydrogen, nitro, cyano, SO2 --R7, CONR8 R9, SO2 NR8 R9, SO2 OR...
10/10/1978
4099909Method of dyeing with dispersible azo anilino dyestuffs
A class of dispersible phenyl-azo-aniline dyestuffs corresponding to the formula ##STR1## wherein A is phenyl substituted by halogen, cyano, nitro, lower alkylsulphonyl, lower alkoxycarbonyl, di-lower-alkyl-carbamoyl or di-lower-alkyl-sulfamoyl,...
07/11/1978
4078890Process for the dyeing and printing of polyester material
The invention relates to a process for the dyeing and printing of polyester material in a weakly acid, neutral or alkaline solution of at least one altered dispersion dyestuff water-soluble at an intermediate stage and containing a carbacyl group which is...
03/14/1978
4060544N-2-[N-(keto-tert-alkyl carbamyl)alkyl]phenylamines
A phenyl amino compound having a tertiary amino group contain one or two N-bonded --C2 H4 CONHC(CH3)2 CH2 COCH3 moieties; said tertiary amino group being bonded through the nitrogen atom to...
11/29/1977
4059402Transfer printing process
The invention relates to the transfer printing hydrophobic fibre materials using paper supports which are printed with azo dyestuffs of the formula ##STR1## wherein X1 and X2 represent hydrogen or alkyl or cycloalkyl radicals an...
11/22/1977
4053465Cyanophenyl-azo-aminophenyl dyestuffs
Dyestuffs of the formula ##STR1## wherein B denotes (CH2)n --R1 or alkenyl, R1 denotes hydrogen, cyano, carbalkoxy, alkoxy or phenyl, R2 denotes hydrogen, cyano, alkoxy or sulphato, R3 denotes h...
10/11/1977
4048153Azo dyes having an optionally substituted 1-azo-3-nitro-4-arylaminophenyl nucleus
Water-soluble azo dyes of the formula ##STR1## in which R1 signifies an aromatic or heterocyclic radical which may be substituted, R2 has one of the significances of 1 or is the radical of a coupling component, for example, a ra...
09/13/1977
40467572-Optionally substituted alkyl-and phenylsulfonylphenyl-azo-phenyl dyes and a process for their synthesis
Compounds of the formula ##STR1## wherein R1 is optionally substituted hydrocarbyl (alkyl or phenyl), R2 is hydrogen, alkyl or acylamino, R3 is hydrogen, alkyl, substituted alkyl, alkoxy or substituted alkoxy, Each of R
09/06/1977
3998804Process for coupling of water-insoluble 2,4-disubstituted phenols with diazotized o-nitroanilines
Substituted 2-nitro-2'-hydroxy-azobenzenes are manufactured by coupling a phenol dispersed with a dispersing agent in water with a solution, in an inorganic acid, of a diazotized o-nitroaniline at a pH value not exceeding 2. The azobenzenes obtained are i...
12/21/1976
3981859Silicone-compatible azo dyestuffs
Azo dyestuffs containing the tris(trimethylsilyloxy)silylalkylamino group, ##EQU1## are produced and are found to be compatible with cured silicone polymers....
09/21/1976
3962209Process for preparing azo dyestuffs with ortho-azo cyano groups by cyano exchange of metal cyanides and halo dyestuffs
Azo dyestuffs having the formula ##EQU1## in which A is an aromatic carbocyclic radical containing the CN substituent in the o-position to the azo group and K is the radical of a coupling component as well as the process for their production are ...
06/08/1976
3951591Process for dyeing synthetic fiber materials
A process for the continuous dyeing of synthetic fibrous materials from organic solvents, which comprises impregnating the said fibrous materials with organic dyebaths containing at least one dyestuff of the formula (1) ##SPC1## In which R represents a se...
04/20/1976
3939142Phenylazophenyl dyestuff
Basic azo dyestuffs, free from sulfo groups and having the formula Wherein Z is the radical of a tertiary amino group or of a quaternary ammonium group, Alk is alkylene of two to five carbon atoms, X is oxygen, Ar is phenylene unsubstituted or substituted by a...
02/17/1976
 
Sign InRegister
Username  
Password   
forgot password?