Styrene resin, chlorosulfonated

Chlorosulfonated styrene resins and carboxyaminoacid polymers were also found to possess thromboresistant properties by Josefonwicz and coworkers [483]. Studies included investigation of the effect of spacer length between amine and carboxylic groups as well as modification of styrene/isoprene/styrene blocks with chlorosulfonyl isocyanate giving sulfamate and carboxylic functionality [484],... 

Examples are the sulfonating of polyethylene film with chloro-sulfonic acid (60) the sulfonating of sheets of phenolformaldehyde resin (77) the treatment of a film consisting of polystyrene and polyvinylchloride with concentrated sulfuric acid (4) the sulfonating of films consisting of aliphatic vinylpolymers with chlorosulfonic acid (125) the sulfonating of copolymers of a monovinyl- and a polyvinyl compound (30). Also are used copolymers of aromatic monovinyl-compounds and linear aliphatic polyene hydrocarbons (3) copolymers of an unsaturated aromatic compound and an unsaturated aliphatic compound (76), and of reaction products of poly olefines and partially polymerized styrene (173). 

The same authors " prepared copoly(vinyl alcohol-styrenesulfonic acid) resins which catalyze the hydrolysis of cubohydrates, among them dextrin and sucrose. Also, cation-exchanger membranes (from radiochemical grafting of styrene followed by reaction with chlorosulfonic add) were patented for the hydrolysis of dextrin to D-glucose. The results discussed may be useful for introducing subtle modifications into dextrins already prepared. A review on modified (converted) starches appeared in 1987. 

Cellulose acetate butyrate lonomer resin Polyethylene, chlorosulfonated Polyethylene elastomer, chlorinated Polyvinyl chloride Styrene-ethylene/butylene-styrene block copolymer Tetrafluoroethylene/propylene copolymer tubing, chemicals Polymethyl methacrylate tubing, flexible... 

A divinylbenzene-ethylene-styrene copolymer is sulfonated by 3.5-10% solutions of chlorosulfonic acid in organic solvents, e.g. chloroform or 1,2-dichloroethane at RT to yield cation-exchange resins. Porous st)rrene-divinyl-benzene-ethylvinylbenzene copolymers have also been treated with the reagent and hydrazine hydrate to form ion-exchange resins containing sulfonyl hydrazide groups. ... 

Porous silica-supported polymeric catalysts were prepared by sulfonation of divinylbenzene (DVB) or styrene-DVB copolymers with chlorosulfonic acid. The resultant acidic polymers had an ion-exchange capacity of up to 0.41 mequiv. g. ° Treatment of the styrene-divinylbenzene copolymer (one part) with chlorosulfonic acid (three to four parts) in 1,2-dichloroethane at 10-25 afforded the cation-exchange resin. ... 

As an example 2, 12 and 25% DVB cross-linked chloromethylstyrene-styrene copolymer beads were functionalized by treatment with triethyl phosphite and then with chlorosulfonic or sulfuric acid to give the ion-exchange resin with ion-exchange capacity of 10.89, 7.69 and 6.88 mmol g respectively. The resin is useful for removing polyvalent metal cations from aqueous solutions (Chapter 8, Section 6). 

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