Use of sulfonic acid salts in cationic polymerization

Use of sulfonic acid salts in cationic polymerization

The process comprising the steps of mixing cationic sensitive monomer with a catalyst consisting of sulfonic acid salt and heating the resulting mixture at 120 to 425* f. to effect cure thereof in the ansence of halide promoter, photo reducible ketone, or without requiring actinic light, wherein said monomer is an ethylenically unsaturated hydrocarbon, an ethylenically unsaturated compound having an oxygen or nitrogen atom attached to one of the carbon atoms of a carbon-to-carbon double bond or is polymerizable by ring opening of cyclic groups containing a hetero oxygen or nitrogen ring atom, and is selected from the group consisting of vicinal expoxides, vinyl ethers, n-vinyl compounds, aziridines, ethylenically unsaturated hydrocarbons and acetals and said sulfonic acid salt has the formula (RFSO3)nm, where RF is fluoroalkyl having 1 to 18 carbon atoms.

Polymers containing alkylated nitrogen salts of sulfonic acid are useful for imparting good conditioning properties such as comb ability, feel, manageability, and curl retention to hair. The polymers may also comprise neutral, anionic, cationic monomers.

Sulfonic acid electrolytic cell membranes

An improved polymer for use as an ion exchange membrane in an electrolytic cell wherein the polymer has pendant chains containing sulfonic acid ion exchange groups and has an equivalent weight of between about 800 and about 1500. The polymers have a hydration product of less than about 22,000.The electrolytic cell and its method of operation are described when these polymers are used as ion exchange membranes.

Water soluble polymers containing allyloxy benzene sulfonic acid and methallyl sulfonic acid monomer

Water soluble polymers are prepared from an allyloxy benzene sulfonic acid monomer, a methallyl sulfonic acid monomer, a copolymerizable nonionic monomer, and a copolymerizable olefinically unsaturated carboxylic acid monomer. The polymers are used to disperse particulate matter and to inhibit the formation and deposition of mineral scale in aqueous systems and are used in detergent compositions.

 

Trifluorostyrene sulfonic acid membranes

This disclosure is directed to fluorocarbon polymers, polymeric membranes, and electrochemical cells and processes. The polymers and membranes are produced by radiation techniques to provide improved products. For example, α, β, β-Trifluorostyrene in an inert organic solvent is grafted onto an inert film, such as tetrafluoroethylene-hexa fluoropropylene copolymer, by irradiation, i.e. with Co-60 gamma radiation at a dose of several Mrad. The grafted film is then sulfonated, preferably in a chlorosulfonic acid bath. The resulting film is useful as a membrane or diaphragm in various electrochemical cells such as chlor-alkali or fuel cells.

Acrylamido-sulfonic acid polymers and their use as rust agents

Polymers and copolymers of acrylamido-sulfonic acid compounds and their use basically as dispersants for particles contained in aqueous systems. exemplary of the sulfonic acid compound is 2-acrylamido-2-methylpropane sulfonic acid or water-soluble salt thereof; and representative of the co-monomers which the acid is copolymerized with can be mentioned acrylic acid and derivatives thereof, acrylamide and derivatives thereof, vinyl pyrrolidone, etc. the polymers and copolymers are specifically useful in dispersing water-insoluble compounds of iron calcium magnesium and aluminum and such commonly occurring particles of silt and clay.

Sulfonic acid salts

Sulfonic acid salts find utility in drug development. In pharmaceuticals, drug substances presented as sulfonic acid salts ensure that the resultant drug product exhibit less plastic deformation while processing. Unlike other strong acid salts, sulfonate salts do not have the propensity to form hydrates, making them suitable for secondary processing like wet granulation. Sulfonic acid salts also find utility in photo imaging and as an etching agent for compound semi-conductions and ceramics. Moreover, such salts are stable and do not suffer from disproportionation reactions encountered in other salts.

 Sulfonic acid salts refer to those anions that have the general formula RSO2O? Are and are also referred to as sulfonate, wherein R is alkyl, aryl or any other organic moiety. Organic sulfonic salts serve as anionic surface-active agents and are therefore widely used in the detergent industry. Unlike ordinary soaps, soaps containing organic sulfonic salts do not form insoluble salts with calcium and magnesium ions and hence they do not form scum in hard water. In the petroleum industry, they are also employed as emulsion breakers. They also find application as electrolytes in Zinc-cerium and lead-acid flow batteries. They are important intermediates in the preparation of dyes and chemicals for electroplating.

Sulfonic acid dispersants for solubilizing asphaltenes in petroleum oils

The present invention is an asphaltene dispersant containing an aromatic, a sulfonic acid head, and an alkyl tail containing 16 carbons or more and at least one branch of a methyl or longer alkyl. Preferably, the aromatic is a fused two ring aromatic and the tail is a two, branched alkyl tail of 30 carbons or longer.

Organic sulfonic acid stripping composition and method with nitrile and fluoride metal corrosion inhibitor system

Improved organic stripping compositions useful in removing polymeric organic substances, such as photoresist, from metal substrates which comprise one or more organic sulfonic acids, one or more organic solvents and, optionally phenol. The inhibitors system includes 5 to 300 ppm by weight of fluoride per weight of composition and between about 0.01 and about 5 weight percent of a nitrile compound such as acetonitrile or malononitrile.

 

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