4,4 -Isopropylidene diphenol

Diphenol/thiophenol is one of the most important polymer precursors for synthesis of poly(aryl ethers) or poly-(aryl sulfides) in displacement polymerizations. Commonly used bisphenols are 4,4 -isopropylidene diphenol or bisphenol-A (BPA) due to their low price and easy availability. Other commercial bisphenols have also been reported [7,24,25]. Recently, synthesis of poly(aryl ethers) by the reaction of new bisphenol monomers with activated aromatic dihalides has been reported. The structures of the polymer precursors are described in Table 2. Poly(aryl ether phenylquinoxalines) have been synthesized by Connell et al. [26], by the reaction of bisphenols containing a preformed quinoxaline ring with... 

ESIS (2006) Summary risk assessment report on 2,2 ,6,6 -tetrabromo-4,4 -isopropylidene diphenol (tetrabromobisphenol-A or TBBP-A) Part II - Human Health 2006. http //esis.jrc. ec.europa.eu... 

Epoxy Resins. The chemistry of epoxy resin adhesives is quite varied. However, the most widely used is that formed from the reaction of 4,4 -isopropylidene diphenol (bisphenol A) [80-05-7], and epichlorohydrin [106-89-8], C3H5QO. This epoxy resin is more commonly known as... 

X = C(CF3ro> dipropargyl ether of 4,4 -(hexafluoro-isopropylidene)diphenol... 

Xylene-formaldehyde resins condensed with 4,4 -isopropylidene-diphenol-epichlorohy-drin epoxy resins substances identified in Sec. 175.300... 

Ruorinated PAES copolymers have been prepared by the copolymerization of 4,4 -bis(4 -fluoro-3 -trifluoromethyl benzyl) biphenyl, 3, 3 -disulfonate-4,4 -dichlorodiphenyl sulfone, and 4,4 -isopropylidene diphenol [135], The degree of sulfonation of the copolymers can be controlled by the variation of ratio of 4,4 -bis(4 -fluoro-3 -trifluoromethyl benzyl) biphenyl to 3,3 -disulfonate-4,4 -dichlorodiphenyl sulfone. Good thermal stability, oxidative stability, and mechanical properties at degrees of sulfonation of 0.2-0.6 were established. 

Bisphenol A bis- fe- nol, - nol. fi- n OH-Ar-(CH3)2 -Ar-OH, a diol which reacts with epichlorohydrin to form bisphenol epoxy resins. (4,4 -isopropylidene-diphenol) An intermediate used in the production of epoxy, polycarbonate, and phenolic resins. The name was coined after the condensation reaction by which it may be formed - two (bis) molecules of phenol with one of acetone (A). 

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