Diisocyanate Dimethyl sulfoxide

Dimethyl sulfoxide can also be used as a reaction solvent for other polymerizations. Ethylene oxide is rapidly and completely polymerized in DMSO (85). Diisocyanates and polyols or polyamines dissolve and react in DMSO to form solutions of polyurethanes (86) (see Solvents, industrial). 

Certain polyureas may be made directly from the diisocyanate in the presence of dimethyl sulfoxide and a carboxylic acid [90] (Eq. 59). 

Toluene-2,4-diisocyanate 62-76-0 Sodium Oxalate 67-68-5 Dimethyl Sulfoxide... 

Segmented polyurethanes were synthesized from the a, to diol polyethers listed in Table I and the diisocyanates IV, V, and VI by the two-step process shown in Figure 1 or the three-step process in Figure 2. In all cases, chain extension of isocyanate-terminated prepolymers was accomplished with ethylenediamine. The synthesis took place in a 2 1 (v/v) mixture of dimethyl sulfoxide and 4-methyl-2-pentanone at 60°C. 

Dimethyl sulfoxide is used as a reaction solvent in the polymerization of acrylonitrile with a vinyl monomer (e.g., styrene) [2,3]. Reaction of diisocyanates and polyols or polyamines dissolved in DMSO yield solutions of the polyurethanes [4]. Mixtures of DMSO and water are used as a spinning solvent for polymer fibers. Polyaryl ether polymers are formed from DMSO... 

Tosyl isocyanate reacts with dimethyl sulfoxide to give the expected exchange products, dimethylsulfllimine and carbon dioxides Sulfonyl diisocyanate reacts with two equivalents of dimethyl sulfoxide in acetonitrile to give sulfonyl bis(dimethylsulfilimine) 169 in 83 % yield o ... 

Polycyclic aromatic hydrocarbons were also used for imprinting polyurethanes based on Van der Waals interactions, and the resulting MIPs were used for the recognition of the templates [80]. Cholesterol has also been used as the template in the polymeriza-ton of (3-cyclodextrin with diisocyanates in dimethyl sulfoxide [81]. In another work, the vinyl monomer of 6-0-a-D-glucosyl-(3-cyclodextrin was imprinted with dipeptides [82] or cyclodextrin [83]. Other examples include imprinting acryloylamylose with bisphenol A and alkylphenols [84]. 

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. 

---