Sulfonated engineering thermoplastics

Parabis. [Dow] Bisphenol A resin intermediate used to produce PC and poly-sulfone engineering thermoplastic resins. 

An example of a sulfite ester made from thionyl chloride is the commercial iasecticide endosulfan [115-29-7]. A stepwise reaction of thionyl chloride with two different alcohols yields the commercial miticide, propaigite [2312-35-8] (189). Thionyl chloride also has appHcations as a co-reactant ia sulfonations and chlorosulfonations. A patent describes the use of thionyl chloride ia the preparation of a key iatermediate, bis(4-chlorophenyl) sulfone [80-07-9] which is used to make a commercial polysulfone engineering thermoplastic (see Polymers CONTAINING SULFUR, POLYSULFONe) (190). The sulfone group is derived from chlorosulfonic acid the thionyl chloride may be considered a co-reactant which removes water (see Sulfolanes and sulfones). 

Among organic materials, poly(aryl ethers) and poly (aryl sulfides) have been known, as a class of engineering thermoplastics. The electron withdrawing sulfone and ketone groups usually activate the dihalo or dinitro compounds to facilitate the nucleophilic displacement through the transition state called Meisenheimer-Iike complex, and, thus, poly(aryl ether or sulfide) sulfones... 

Reactive compatibilization of engineering thermoplastic PET with PP through functionalization has been reported by Xanthos et al. [57]. Acrylic acid modified PP was used for compatibilization. Additives such as magnesium acetate and p-toluene sulfonic acid were evaluated as the catalyst for the potential interchange or esterification reaction that could occur in the melt. The blend characterization through scanning electron microscopy, IR spectroscopy, differential scanning calorimetry, and... 

Polyether sulfones (PES) are another class of engineering thermoplastics generally used for objects that require continuous use of temperatures around 200°C. They can also be used at low temperatures with no change in their physical properties. 

Various kinds of engineering thermoplastics such as polyether sulfone, polyether imide, polyaryl ether ketone, and polyphenylene oxide have been studied as toughening agents for... 

Within the past several years, improvements in the toughening of high-temperature epoxies and other reactive thermosets, such as cyanate esters and bismaleimides, have been accomplished through the incorporation of engineering thermoplastics. Additions of poly(arylene ether ketone) or PEK and poly(aryl ether sulfone) or PES have been found to improve fracture toughness. Direct addition of these thermoplastics generally improves fracture toughness but results in decreased tensile properties and reduced chemical resistance. 

An extensive investigation was carried out in our laboratories of an aromatic sulfonate copolyester system, which led to the definition of a remarkable class of engineering thermoplastics. In this chapter we dis-... 

The incorporation of engineering thermoplastics, such as poly(arylene ether sulfone)s, polysulfone. 

Hedrick, J.L. Yilgdr, I. Wilkes, G.L. McGrath, J.E. Chemical modification of matrix resin networks with engineering thermoplastics. I. Phenolic hydroxyl terminated poly(aryl ether sulfone)-epoxy systems. Polym. Bull. 1985, 13, 201-208. 

Poly(arylene sulfone)s and poly(arylene ketone)s are important engineering thermoplastics, and display high Tg-values, high thermal stabilities, good mechanical properties, and an exceptional resistance to both oxidation and acid-catalyzed hydrolysis. It is only during the past decade that the sulfonated aromatic polymers have been considered to be well-suited as PEM candidates for fuel cells [61-64]. 

An alternative approach to using a rubber such as CTBN as the disperse phase is to use an engineering thermoplastic such as polyether sulfone or a polyimide in which the mechanical properties and Tg are more closely matched to those of the resin. These systems exhibit LCST behaviour, so the cure tempemture is located below the initial miscibility gap... 

The sulfonation of polyethylene films to produce negatively charged membranes was described above24. While adequate for many uses, these aliphatic polysulfonates lack long-term stability under adverse conditions. To improve performance, attention was directed in recent years to sulfonation of so-called engineering thermoplastics , a class of film-forming polyaromatics with improved mechanical and thermal properties. 

Another (family of linear aromatic polymers is the polysulfones. They are tough, high-temperature-resistant engineering thermoplastics. Polysulfones may be synthesized by the nucleophihc substitution of alkali salts of biphenates with activated aromatic dihalides. A typical example is the preparation of bisphenol A polysulfone (21) from the reaction of disodium salt of bisphenol A with dichlorodiphenyl sulfone ... 

Polysulfones constitute a family of high-performance transparent engineering thermoplastics with high oxidative and hydrolytic stability and excellent high-temperature properties. They may be prepared by condensation polymerization of 4,4 -dichlorophenyl sulfone with aUcah salt of bisphenol A in polar solvents like dimethylsulfoxide (DMF) or sulfolane. 

Polysulfones are a family of engineering thermoplastics with excellent high-temperature properties. The simplest aromatic polysulfone, poly(p-phenylene sulfone)... 

Polyether sulfone is a high-temperature engineering thermoplastic with the combined characteristics of high thermal stability and mechanical strength. It is a linear polymer with the following structure ... 

Hed Hedrick, J. L., Yilgor, I., Jurek, M., Hedrick. J. C., Wilkes, G. L., McGrath, J. E. Chemical modification of matrix resin networks with engineering thermoplastics 1. Synthesis, morphology, physical behaviour and toughening mechanisms of poly (arylene ether sulfone) modified epoxy networks. Polymer 32 (1991) 2020-2032. 

Tris (2,4-di-t-butylphenyl) phosphite stabilizer, lubricating oils Barium dinonyinaphthalene sulfonate Hexamethylenetetramine stabilizer, m.w. adhesives Distearyl pentaerythrityl diphosphite stabilizer, m.w. coatings Distearyl pentaerythrityl diphosphite stabilizer, m.w. elastomers Distearyl pentaerythrityl diphosphite stabilizer, m.w. engineering thermoplastics Distearyl pentaerythrityl diphosphite stabilizer, m.w. polyesters Distearyl pentaerythrityl diphosphite stabilizer, m.w. polymer processing Distearyl pentaerythrityl diphosphite stabilizer, m.w. polyolefins Distearyl pentaerythrityl diphosphite stabilizer, m.w. styrenics Distearyl pentaerythrityl diphosphite stabilizer, make up... 

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