Victrex polyethersulfone

PES repeat unit stmcture can alternatively be drawn as Victrex polyethersulfone [25667 2-9]. 

Victrex PES Aromatic Polymer—Adhesive for Use with Victrex Polyethersulfone, No. VX TS 1.78, August 1978. 

Amoco Performance Products (Atlanta, Ga.), is the sole supplier of polysulfone, Udel, polyarylsulfone, Radel A, and polyphenylsulfone, Radel R. ICI Advanced Materials (Exton, Pa.), is the sole domestic supplier of the polyethersulfone, Victrex PES, but announced ia 1991 it was withdrawing from the business. 

The two commercially significant polysulfones are (a) the polysulfone derived from bisphenol A, which is simply referred to as polysulfone (PSO Udel , Amoco) and (b) the polyethersulfone (PES Victrex , ICI). The current world-wide consumption of all polysulfones is estimated to be less than 19 kton/y about 70% of which belong to the polysulfone (PSO). The hydrolytic stability of polysulfones appears to be their unique advantage over other high heat, transparent thermoplastics... 

Victrex VST Polyethersulfone, PES/PTEE blends ICI Materials - Plast. 

Polyethersulfone (PES) (VICTREX) Polyethylene terephthalate (PET) Polyethylene oxide Polyfluoroalkoxy resin (PFA) Polyimide... 

Polyethersulfone Victrex ICI 430 (221) 356 (180) Transparent, creep Electrical appliances. 

According to Chen et al. [31], the porous substrate membrane is prepared in the following way. A solution of polyethersulfone (Victrex 200P) polymer in dimethyl sulfoxide is prepared (21 to 26 wt% polymer) and cast onto polyethylene backing cloth, to the thickness of 254 Then, the cast membrane is gelled in ice cold water for 1 h. 

Abstract The miscibility behavior in blends of polyethersulfone (Victrex PES) with the polyimide PI 2080, (the condensation product of 3,3, 4,4 -benzophenone tetracarboxylic dianhydride [BDTA] and a 4 1 mixture of 2,4-toluene diisocyanate and 4,4 -diphenylmethane diisocyanate) or with the polyimide XU 218 (the condensation product of BDTA and 5(6)-amino-l-(4 -aminophenyl)-l,3,3 -trimethylindane) was investigated using differential scanning calorimetry, dynamic mechanical analysis and thcmiogravimetric analysis. The effects of solvents (dimethylacetamide, tetramethylene sulfone, dimethyl sulfoxide and l-methyl-2-pyrrolidone) on miscibility were studied and one solvent, tetramethylene sulfone was found to have a plasticizing effect. In the absence of solvent, the equilibrium phase boundary for these blends was in the experimentally inaccessable region below the Tg-composition line. The phase boundary at zero solvent concentration was obtained by extrapolation using data collected in the presence of the plasticizer. 

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