Abstract: This invention provides a method for providing a functionalized inner skin on the lumen-defining surface of a hollow tube using either a Newtonian coating fluid used in combination with a relatively non-Newtonian plug fluid, or a non-Newtonian coating fluid (optionally in combination with a more non-Newtonian plug fluid). This invention enables the facile provision of a functionalized inner skin on the lumen-defining surface of tubes previously deemed difficult to coat, e.g., tubes wherein the inner diameter varies along the length of the tubes, tubes having elliptical or irregular cross-sectional configurations, branched tubes, and tubes having lumens of small diameter, e.g. tubes useful in membrane applications. Preferably, the coating will be dried or crosslinked to promote sustained adhesion and/or to increase the functionality of the coating.

Abstract: An improved method for inhibiting the deposition of paraffins on the surface of equipment in contact with crude oil or natural gas streams containing paraffins. The deposition of paraffins may be reduced by first contacting the equipment with a sulfur trioxide containing fluid and then adding an aqueous solution containing hydroxyl ions to the crude oil or natural gas streams containing paraffins which are in contact with the equipment.

Abstract: A sulfur trioxide-containing fluid, e.g., sulfur trioxide gas, is contacted with the surfaces of equipment in contact with crude oil or natural gas to retard the deposition of paraffins from the crude oil or natural gas and/or to react with the paraffins already deposited on the equipment surfaces to produce a water-dispersible material which is removed with an aqueous liquid.

Abstract: A sulfur trioxide-containing fluid, e.g., sulfur trioxide gas, is contacted with the surfaces of equipment in contact with crude oil to retard the deposition of paraffins from the crude oil and/or to react with the paraffins already deposited on the equipment surfaces to produce a water-dispersible material which is removed with an aqueous liquid.

Abstract: In the suspension polymerization of monovinyl aromatic polymers, detrimental polymer buildup on the internal surfaces of the reactor is reduced by contacting the internal surfaces of the reactor with sulfur trioxide. This means of retarding polymer buildup is particularly adaptable to suspension polymerization of lightly crosslinked styrene-divinyl benzene copolymer beads which may also contain acrylonitrile.

Abstract: A method of removing residual carbon from solid surfaces, such as metal or glass, by contacting the surface with sulfur trioxide and thereafter rinsing the surface. The surface may be subsequently contacted with a passivating solution.

Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.

Abstract: A process for retarding undesirable buildup of polymeric material on the internal surfaces of reactors used in the polymerization of substantially water-insoluble ethylenically unsaturated monomer, particularly vinyl chloride monomer, and for significantly reducing the tendency of reactor contents to foam during deoxygenation of such contents prior to subsequent polymerization reactions, such process comprising introducing sulfur trioxide into the reactor in an amount sufficient to provide at least about 0.045 grams of sulfur trioxide per gallon of reactor volume.

Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.

Abstract: An improved process for preparing transparent shaped articles from a vinylidene chloride polymer, said articles having excellent barrier properties and a high degree of clarity, continuity and flexibility such process comprising (1) preparing a substantially homogeneous admixture from (A) a particulate vinylidene chloride polymer having crystalline melting peaks of at least about 175.degree. C. as determined by differential thermal analysis, and (B) a volatile material having dispersed or dissolved therein from about 3 to 20 percent based on vinylidene chloride polymer weight of a nitrile containing elastomer which is compatible with the vinylidene chloride polymer, and wherein the volatile material is a nonsolvent for the vinylidene chloride polymer, then (2) removing the volatile material from the admixture and (3) thermally fabricating the admixture into a shaped article.

Abstract: Novel sulfonium compounds are described herein which correspond to the formula ##STR1## The sulfonium compounds are useful corrosion inhibitors in acidic cleaning solutions.

Abstract: The corrosion of metal surfaces in contact with aqueous acid cleaning solutions is inhibited by sulfonium salt corresponding to the formula ##STR1## wherein n is 1 or 2; R.sub.1 is an electron withdrawing group; R.sub.2 is a hydrocarbyl radical or inertly-substituted hydrocarbyl radical of up to about 24 carbon atoms; R.sub.3 is alkyl of from 1 to 4 carbon atoms, inertly-substituted alkyl of 2-4 carbon atoms, allyl, phenyl or inertly-substituted phenyl; or R.sub.2 and R.sub.3 are joined to form a 5- or 6-membered heterocyclic ring; and A.sup.- is a compatible anion. These sulfonium salts are effective corrosion inhibitors even in the presence of ferric ions.

Abstract: Novel sulfonium compounds are described herein which correspond to the formula ##SPC1##The sulfonium compounds are useful corrosion inhibitors in acidic cleaning solutions.

Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.