Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
C524S135000, C524S147000, C524S148000, C524S149000, C524S145000, C524S150000, C524S151000, C524S152000, C524S153000
4,4′-Biphenol polysulfone composition comprising:as main ingredient, at least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting 4,4′-biphenol with at least one sulfone monomer SM1(Bo1PSU),more than 0.01% by weight, based on the total weight of the composition, of at least one phosphorus-containing compound chosen from organic phosphites and organic phosphonites, andat least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting bisphenol A with at least one sulfone monomer SM2(Bo1A PSU).4,4′-Biphenol polysulfone composition containing at least 60% by weight, based on the total weight of the 4,4′-biphenol polysulfone composition, of at least one Bo1PSU, said composition having a melt viscosity ratio at 410° C. and at a shear rate of 50 s−1(VR40) of below 1.20.Process which is especially well-suited to prepare the above compositions.Articles made from the above compositions or prepared by the above process.
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