Sulfonated bisphenol

Polyether sulfones can be prepared by the reaction of the sodium or potassium salt of bisphenol A and 4,4-dichlorodiphenyl sulfone. Bisphenol A acts as a nucleophile in the presence of the deactivated aromatic ring of the dichlorophenylsulfone. The reaction may also be catalyzed with Friedel-Crafts catalysts the dichlorophenyl sulfone acts as an electrophile ... 

Sulfonated bisphenol A polysulfone-l)/ocfc-poly(vinylidene fluoride)... 

Wang et al. [32] sulfonated bisphenol based wholly on aromatic poly(arylene ether sulfone) (PBPS) at various degrees of sulfonation. The surfaces of the membranes prepared from these polymers were studied by AFM. Figure 8.12 shows AFM... 

Bis (phenethyloxy) ethane. See Acetaldehyde diphenethyl acetal 4,4 -Bisphenol A. See Bisphenol A 4,4 -Bisphenol S. See4,4 -Dihydroxydiphenyl sulfone Bisphenol A... 

Poly(methyl methacrylate) Poly(sulfone), Bisphenol A (Polystyrene LG, BASF) 21.28 5.75 4.30 22.47 [54]... 

Fig. 24 Synthesis of A sulfonated 4,4 -difluorodiphenyl sulfone and B 3,3 -sulfonyl-fcis-(6-hydroxybenzene sulfonic acid) (sulfonated bisphenol S)...

Block copolymers comprising carbonate and arylene ether blocks have been prepared by the catalytic decarboxylation of random or alternating copolycarbonates. This novel route to block copolymers is catalyzed by a number of catalysts and requires only that one of the bisphenols in the starting copolycarbonates be activated by electron-withdrawing substituents, e.g. 4,4 -dihydroxydiphenyl sulfone (bisphenol S), or 4,4 -dihydroxybenzophenone (bisphcnol K). 

Besides the use of dihalo sulfonated monomers, the Guiver group introduced several commercial sulfonated bisphenol monomers to prepare SPEK polymers. For example, sodium 6,7-dihydroxy-2-naphthalenesulfonate (DFINS) was purchased from Rintech, Inc. and recrystallized before use. The sulfonated poly(arylene ether ether ketone ketone) copolymer containing pendant sulfonic acid groups was... 

Poly(sulfone) Bisphenol A-bis(ohlorophenyl) sulfone copolymer. SRU 25 135-51-7 Poly(oxy- 1,4-phenylenesulfonyl- 1.4- phenyleneoxy-1,4-phaiyiene( 1 -methylethylidene)- 1.4- phenylene) U (C27H22O4S),... 

Stain-resist agents related to syntans are condensation products of formaldehyde with aromatic compounds, including phenols, 4,4 -diphenyl sulfone, p-phe-nolsulfonic acid, sulfonated naphthalene, and sulfonated bisphenol (Fig. 14.7). The condensates contain sulfonic acid groups or are sulfonated after the condensation reaction [44-54]. A polycondensation of a phenolsulfonic acid with formaldehyde may involve desulfonation and consequent cross-linking [55]. Because the condensation reactions are complex, the formaldehyde condensates used as stain-resist agents are mixtures of several components [56]. 

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