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8158819 |
Process to obtain a highly soluble linear alkylbenzene sulfonate
The present invention refers to a process to obtain a highly soluble linear alkylbenzene sulfonate (LAS). Specifically it comprises the addition, prior or after sulfonation of linear alkylbenzene...
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8034973 |
Process for obtaining highly soluble linear alkylbenzene sulfonates
The present invention relates to a process for obtaining a highly soluble linear alkylbenzene sulfonate with an adjustable 2-phenyl isomer content and an extremely low sulfonation color, in which a...
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6087529 |
Process for the stabilization of alkylbenzenesulphonates
To improve color and odor characteristics of sulfonic acids and their derivatives while maintaining sludge and sulfuric acid reduction and good thermal stability, they are treated with at least one...
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5434301 |
Methods for recovery of acids
A process for recovering sulfuric acid from a mixture containing sulfuric acid and organic sulfonation products is provided. The process comprises contacting a mixture comprised of sulfuric acid...
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4910335 |
Decolorization of alkanesulfonic and arenesulfonic acids
A method for decolorizing color contaminated alkanesulfonic or arenesulfonic acids represented by Formula I: RSO3 H Icomprises mixing the color contaminated acid with an effective amount of a...
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4910334 |
Recovery of overbased alkaline earth metal additives from centrifugates
Centrifugates obtained by centrifuging the reaction product of a process in which organic acids selected from the group consisting of higher alkyl benzene sulfonic acids, higher alkyl naphthenic...
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4747972 |
Sulfonic acid compositions having reduced sulfur-containing contaminants
Processes of reducing the inorganic sulfur-containing acid and the low equivalent weight organic sulfonic acid content of an acid mass comprising organic sulfonic components and inorganic...
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4677074 |
Process for reducing sulfur-containing contaminants in sulfonated hydrocarbons
Processes of reducing the inorganic sulfur-containing acid and the low equivalent weight organic sulfonic acid content of an acid mass comprising organic sulfonic components and inorganic...
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4618458 |
Sulphonic acids and sulphonates
Purification of sulphuric acid rich sulphonic acids particularly those prepared by oleum sulphonation, by water washing, treatment with an olefine and final heat treatment.
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4614597 |
Recovery of oil and sulfonate from filter cake
A process for recovering oil containing dissolved alkaline earth metal sulfonate from siliceous filter cakes containing such oils by mixing the filter cake with sufficient 0.5 to 16N sulfuric acid...
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4321214 |
Extreme purification of sulfonic-type acids for processing to highly overbased metal sulfonates
A purification process of crude oil soluble hydrocarbon sulfonic acid mixtures which comprises washing the crude oil soluble hydrocarbon sulfonic acid with water, contacting the washed, partially...
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4302403 |
Process for reacting sulfuric acid and an aromatic hydrocarbon to purify a disulfonic acid product of an aromatic hydrocarbon
Unreacted sulfuric acid contained in a disulfonic acid product of an aromatic hydrocarbon that is produced from the reaction of the aromatic hydrocarbon or the mono-sulfonic acid of the aromatic...
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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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3997575 |
Bleaching method for sulfonic acid
A bleaching method for sulfonic acid, which comprises the process of bleaching sulfonic acid by adding (1) 0.5 - 20 parts by weight of primary or secondary aliphatic alcohol having 1 - 12 carbon...
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3927081 |
Purification of crude sulfonic acids
A method of purifying crude, oil-soluble sulfonic acids is disclosed, wherein the method comprises contacting a volatile hydrocarbon solution of crude, oil-soluble sulfonic acids with...
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3720707 |
PROCESS FOR REDUCING THE SULFURIC ACID CONTENT OF ALKYLARYLSULFONIC ACIDS
The sulfuric acid content of alkylarylsulfonic acids obtained by sulfonation with sulfuric acid is reduced by treating said sulfonic acids with ammonia or an ammonium salt in quantity to form...
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3505367 |
PROCESS FOR PURIFYING RAW SULFONATES
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3591498 |
SULFONATION OF NEUTRAL OIL-BENZENE ALKYLATE BLEND
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3677952 |
METHOD OF BLEACHING SULFONATE SURFACTANTS
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3240801 |
Separation of sulfonic acid from excess sulfonating agent
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3232975 |
Process for bleaching sulfonic acids, esters and chlorides
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3083146 |
Sulfonic acid purifying treatment
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3031498 |
Preparation of detergent compositions
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2962526 |
Process of bleaching detergent salts
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2955134 |
Separation of 1-naphthalene sulfonic acid from 2-naphthalene sulfonic acid
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2952639 |
Purification of detergent compositions
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2897156 |
Manufacture of alkyl benzene sulfonate detergents
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2882301 |
Sulfonation of alkaryl hydrocarbons
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2880173 |
Inorganic salt removal from oil-soluble sulfonates
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2858276 |
Method of bleaching alkyl aryl sulfonic acids
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2846457 |
Decolorized detergents and method of manufacture
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2836619 |
Purification of alkaryl sulfonates
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2807642 |
Method of sulfonation to produce inorganic salt-free product
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