Phenolphthalein polycarbonate

Polydimethylsiloxane based multiblock copolymer systems containing 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene polycarbonate units and phenolphthalein polycarbonate units were synthesized and evaluated231 . Both copolymer systems showed good phase separation, increased rubbery character and improved processa-... 

Fig. 2.21 Effect of char yield of polymers on oxygen index The straight line represents the calculated oxygen indices while the points are actual measured values. Notations at the measured points 12,13,22 polyethersulphone 11,20,24 polyphenylene-sulphide 15 polyarylsulphone 18 ABS 17, 25 chlorinated PVC 14, 19 polycarbonate 30, 31 phenolphthalein/polycarbonate copolymer 23 fluorinated polycarbonate/poly(dimethyl siloxane) copolymer 32 poly(vinyl fluoride) 58 poly(vinylidene fluoride) Reprinted from Ref. 40 by permission of Marcel Dekker, Inc. Copyright Marcel Dekker, Inc.,...

The phenolphthalein polycarbonate (char yield (800°)=54%, 01=38.0) also showed flammability improvement when compared to the bisphenol-A polycarbonate (char yield (800°)=21%, 01=26.5). Linear relationships were also obtained as a function of % char or 01 vs. copolymer composition and could be used for predictions. ... 

The effect of these substituents in polycarbonates have been previously discussed,20,21 a most interesting derivative was the polycarbonate based on 4,5,6,7-tetrabromophenolphthalein 21 which had an oxygen index of about 75 and a char yield of 32%. Study of its copolymers with bisphenol-A or phenolphthalein polycarbonate showed non-linear relationships with interesting enhancement of char and oxygen index at intermediate compositions.17 21... 

We studied the complex degradation of phenolphthalein polycarbonate at high temperature using various techniques and have concluded that a prime factor in increased char formation was related to the opening of the internal ester phthalide ring to thermally stable ester crosslinks between chains. 

As a final example, phenolphthalein (10.38) and related compounds react with phosgene to give high molecular weight linear polycarbonates [1434],... 

As host polymer matrices we used poly(alkyl methacrylate)s with various ester groups (methyl PMMA, ethyl PEMA, isopropyl PiPMA, normalpropyl PnPMA, isobutyl PiBMi normjdbutyl PnBMA), poly(methyl acrylate), polyethylene (PE), poly(vinyl chloride) (PVQ, poly(vinylidene chloride) (PVDQ, j lyfvinyl alcohol) (PVOH), polystyrene (PS), polycarbonate (PQ, phenolphthalein polyedier-ketone (PEK-Q, and phenolphthalein polyether-sulfone (PES-C). 

PC-Ph Co-polycarbonate firom phosgene with bisphenol-A and phenolphthalein... 

The polymers included in this study are bisphenol-A polycarbonate (Bis-A PC), polyesteicarbonates (PEC), whose structures are defined in Figure 1, phenolphthalein bisphenol-A copolycarbonate, and polysulfone. All samples were compression molded and physically aged as described elsewhere, with the exception of those for the Fourier transform infrared (FTIR) measurements and solid state variable temperature nuclear magnetic resonance (VTNMR)... 

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