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8110711 |
Processes for production of 2-bromo-2,2-difluoroethanol and 2-(alkylcarbonyloxy)-1,1-difluoroethanesulfonic acid salt
Disclosed is a process for producing 2-bromo-2,2-difluoroethanol, which comprises reducing a bromodifluoroacetic acid derivative represented by the formula [1] by using an ate hydride complex as a...
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8057985 |
Polymerizable anion-containing sulfonium salt and polymer, resist composition, and patterning process
A polymerizable anion-containing sulfonium salt having formula (1) is provided wherein R1 is H, F, methyl or trifluoromethyl, R2, R3 and R4 are C1-C10 alkyl, alkenyl or oxoalkyl or C6-C18 aryl,...
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8048604 |
Hydrofluoroalkanesulfonic acids and salts from fluorovinyl ethers
Hydrofluoroalkanesulfonates of the general formula R—O—CXH—CX2—SO3M, where R is selected from the group consisting of alkyl groups, functionalized alkyl groups, and alkenyl groups; X is selecte...
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8030515 |
Sulfonate salts and derivatives, photoacid generators, resist compositions, and patterning process
Sulfonate salts have the formula: HOCH2CH2CF2CF2SO3−M+ wherein M+ is a Li, Na, K, ammonium or tetramethylammonium ion. Onium salts, oxime sulfonates and sulfonyloxyimides derived from these salts a...
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7928262 |
Sulfonate salts and derivatives, photoacid generators, resist compositions, and patterning process
Sulfonate salts have the formula: HOCH2CH2CF2CF2SO3−M+ wherein M+ is a Li, Na, K, ammonium or tetramethylammonium ion. Onium salts, oxime sulfonates and sulfonyloxyimides derived from these salts a...
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7834209 |
Hydrofluoroalkanesulfonic acids from fluorovinyl ethers
Hydrofluoroalkanesulfonates of the general formula R—O—CXH—CX2—SO3M, where R is selected from the group consisting of alkyl groups, functionalized alkyl groups, and alkenyl groups; X is selecte...
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7569326 |
Sulfonium salt having polymerizable anion, polymer, resist composition, and patterning process
A sulfonium salt having a polymerizable anion generates a strong sulfonic acid upon exposure to high-energy radiation so that it facilitates effective scission of acid labile groups in chemically...
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7319096 |
Thyroid hormone receptor antagonists for cardiac and metabolic disorders II
This invention relates to novel compounds which are thyroid receptor ligands, preferably antagonists, and to methods for using such compounds in the treatment of cardiac and metabolic disorders,...
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6500981 |
Hydroxy and sulfonic acid substituted alkenes and salts
The present invention provides water soluble ethylenically unsaturated monomers selected from the group consisting of formula I and II wherein R1, R2, R3, R4, R5, and R6 are independently selected...
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6326512 |
Method of producing an optically active β-hydroxy sulfonic acid compound by catalytic asymmetric hydrogenation
Disclosed is a method of producing an optically active β-hydroxy sulfonic acid compound comprising hydrogenating a β-keto sulfonic acid compound represented by formula 1: ##STR1##where R1 r...
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6160167 |
Mercaptans and disulfides
This invention relates to novel compositions of matter which either terminate in a sulfhydryl moiety or are disulfides. The compounds also include a terminal sulfonate or phosphonate moiety, and...
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5912385 |
Process for the production of pure alkanesulfonic acids
This invention relates to a process for the production of an alkanesulfionic acid such as isethionic acid with a high purity in a high yield and at a low cost by oxidation of a...
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5516461 |
Process and composition
A process for preparing alkoxylated alkyl glyceryl ether sulfonates which comprises reacting in the presence of water and the absence of ethanol a mixture of alkoxylated glycidyl ethers having as...
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5344949 |
Method for the synthesis of surface-active anion-cation complexes
Surface active anion-cation complexes are synthesized where an organic or organosilicon compound with at least one epoxide group is reacted with a quaternary ammonium hydrogen sulfite of the...
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5256815 |
Bisulfite adducts of 2,4-dihalobutraldehyde
The invention relates to a process for the preparation of cyclopropanecarbaldehydes of formula ##STR1## in which R1 is C1 -C4 alkyl or benzyl, which comprises a) reacting a tetrahydrofuran of...
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5053530 |
Preparation of isethionic acid with organic acid
Synthesis of isethionic acid comprising contacting an alkali metal isethionate and an organic acid.
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5026916 |
Process for the preparation of 1-alkylthio-and 1-benzylthio-1-formylcyclopropanes
Compounds of formula I ##STR1## wherein R is C1 -C4 alkyl or benzyl, are prepared by reacting a butanal of formula II ##STR2## wherein X and Y are each independently of the other chloro, bromo or...
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5024736 |
Process for electroplating utilizing disubstituted ethane sulfonic compounds as electroplating auxiliaries and electroplating auxiliaries containing same
A process in which disubstituted ethane sulfonic compounds are employed as electroplating auxiliaries in electroplating. The compounds for use in combination with the claimed process have the...
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4987250 |
Synthesis of hydroxy sulfonic acids
Hydroxy sulfonic acids in general and isethionic acid (2-hydroxy ethyl sulfonic acid) in particular can be prepared at 99+% purity and good yields by the selective oxidation of a precursor hydroxy...
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4968836 |
Process for the preparation of substituted cyclopropanecarbaldehydes
The invention relates to a process for the preparation of cyclopropanecarbaldehydes of formula ##STR1## in which R1 is C1 -C4 alkyl or benzyl, which comprises (a) reacting a tetrahydrofuran of...
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4939293 |
Sulfonated phenolic material and its use in post primary oil recovery
Sulfonated phenolic compounds as well as sulfomethylated phenolic compounds, surfactant systems containing such compound and the use of such surfactant systems in post primary oil recovery are...
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4939291 |
Process for the preparation of mercaptoethansulfonic acid and sodium salt thereof
For the preparation of saline derivatives of mercaptoethansulfonic acid belonging to the class of the salts of alkali metals and of the salts with basic aminoacids, the sodium salt of the acid is...
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4895977 |
Purification of alkanesulfonic acids using ozone
The removal of oxidizable organic impurities which include alkylthiolsulfonate from alkanesulfonic acids by treatment with an ozone containing gas is disclosed. The treated products have improved...
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4734516 |
Process for the preparation of partially halogenated 1-propanols
The reaction of a zinc compound compound of formula III CF3 CCl2 ZnCl.yL (III)wherein y is 1 or 2 and L is a solvent ligand selected from the group consisting of the N-disubstituted acid amides,...
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4696773 |
Process for the preparation of isethionic acid
A process for the preparation of isethionic acid involving the reaction of sodium isethionate and hydrogen chloride in an alcoholic solvent is described.
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4499028 |
Preparation of isethionic acid
A method for the preparation of isethionic acid by treating an alkali metal isethionate with hydrochloric acid to form isethionic acid and a chloride salt. The chloride salt is removed so as to...
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4483799 |
Hydroxy alkane sulfonic acid sulfoalkyl esters
Sulfoalkylating agents free from sultones may be obtained by heating hydroxy alkane sulfonic acids of propane or butane or the corresponding sultones having 5 or 6 ring members with up to four...
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4404185 |
Slow release formulations of pheromones consisting of aldehydes
A slow release formulation of sex pheromones of insects consisting of aldehydes, is herein described.The formulation consists of the bisulphite adduct of the aldehyde and a buffer having a pH value...
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4351955 |
Alpha-hydroxyisobutyric acid process
Acetone cyanohydrin is converted to alpha-hydroxyisobutyric acid by contacting the cyanohydrin with alpha-hydroxymethanesulfonic acid and water at a temperature of about 70°-125° C. The a...
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4318823 |
Light colored homogeneous and aqueous alpha olefin sulfonate solutions
Light colored homogeneous and aqueous alpha olefin sulfonate solutions wherein about 10 to about 30 wt. % of the sulfonate contained in said alpha olefin sulfonate solutions is 4-hydroxyalkane...
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4277351 |
Method for improving sulfonate surfactants used in enhanced recovery processing in subterranean oil-bearing formations
A method is disclosed for reducing formation plugging impurities in a sulfonate surfactant used in enhanced oil recovery operations which comprises contacting said surfactant with an effective...
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4146551 |
Process for producing magnesium salt of sulfonic acid and sulfuric ester
Disclosed is a process for producing the magnesium salt of sulfonic acids and sulfuric esters comprising the step of neutralizing the sulfonic acids and sulfuric esters with an aqueous dispersion...
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4080315 |
Polyesters of N,N-bis(hydroxyalkyl) taurine salts as antistatic agents for synthetic polymers
Shaped objects including synthetic polymeric fibers with improved antistatic properties are prepared by incorporation therein about 1 to about 15% of a polyester antistatic agent prepared by...
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4003925 |
Purification of sodium isethionate
Glycol impurities in aqueous sodium isethionate solutions are readily removed by extraction with an aliphatic alcohol containing three to four carbon atoms. The use of the purified sodium...
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3959362 |
Ammonium mercaptoalkanesulfonate salts, their preparation, photographic fixing solutions containing same, and method of fixing photographic film therewith
Ammonium mercaptoalkanesulfonate salts having the formula: HS--R--SO3 -NH4 + are new salts prepared by a novel process comprising reaction of a thioamide, such as a thioalkanamide or thioarylamide,...
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3878123 |
ODOR FREE HYDROXYMETHANESULFONIC ACID
The preparation of odorless hydroxymethanesulfonic acid by reaction of equivalent amounts of sulfurous acid and paraformaldehyde is disclosed. This sulfur dioxide odor free sulfurous acid based...
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3625888 |
OXYGEN SCAVENGER SYSTEM
A composition of matter suitable as an oxygen scavenger which is characterized as a solution of salts of a carbonyl (such as an aldehyde and/or a ketone) bisulfite addition product containing minor...
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3522002 |
TREATMENT OF SPENT HYDROCHLORIC ACID PICKLE LIQUOR FOR RECOVERY OF HYDROCHLORIC ACID
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3558457 |
HYDROXYSULFONATE PRODUCTION
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3808157 |
DETERGENT COMPOSITION CONTAINING A MIXTURE OF VINYL,VINYLIDENE AND INTERNAL OLEFIN SULFONATES
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3697391 |
ELECTROPLATING PROCESSES AND COMPOSITIONS
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3849486 |
PROCESS OF CONVERTING SULTONES TO HYDROXYALKYLSULFONATES
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3845114 |
PROCESS FOR CONVERTING ALKYL SULTONES TO ALKENE SULFONIC ACIDS
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3422138 |
PROCESS FOR THE MANUFACTURE OF DETERGENT SULFONATES
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3420876 |
PROCESS FOR PREPARING 1-AMINO-3-CARBOXYPROPANE-2-SULFONIC ACID
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3409637 |
Sulfonating olefins with gaseous sulfur trioxide and compositions obtained thereby
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3384595 |
Detergent compositions containing gamma-hydroxy organic sulfonate type compounds
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3370005 |
Process for the preparation of lubricating agents for leathers and furs
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3330856 |
Vicinal sulfocarbamate esters
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3277163 |
Process for preparing bis-hydroxyalkylsulfones and beta-hydroxyalkylsulfonic acid salts
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