polyesterification of dicarboxylic acid dichlorides with bisphenols in the presence of triethylamine is a homogeneous system has been investigated to show that under conditions of non-equilibrium solution polycondensation the molecular weight of the resulting polymer depends on the reactivity of the initial...
The composite was prepared from isophoren diisocyanate (IPDI), 2,2-bis (hydroxymethyl) propionic acid (DMPA), PEG with various molecular weights (M n = 200, 400, 600, and 1000 g/mol), dibutyltin dilaurate (DBTDL), and triethylamine (TEA) using acetone method. Then, dispersing ...
17, 1976 di- or poly-trialkyl ammonium phenolates (for example polytriethyl-ammonium phenolates) are reacted with an excess of a cyanogen halide in an organic solvent, optionally in the presence of catalytic quantities of trialkyl amines, such as triethylamine, to form the corresponding aromatic...
The reaction was stopped by adding of a large excess of methanol–triethylamine (1:1 vol) to the initiator after a predetermined period. The reaction mixture was poured into methanol and the precipitate was dried in vacuo up to a constant weight. Coupling Reaction of PVOTBDMS with PCL-OTMS ...
Hexaethyleneglycol (1) (2.5 ml, 10 mmol) is dissolved in 50 mL dichloromethane, triethylamine (4.17 ml, 10 mmol) is added, methanesulfonyl chloride (1.72 mL, 22 mmol) is dripped in, and reaction continues 16 hours at a room temperature under nitrogen gas protection. 1.2 ml methanol is add...
A comparison of the properties of different common types of neutralizing agentAs siscsahnobwenseiennTfarbolme 7T.able 7, ammonia showed a worse dispersion effect than triethy- lamine and DMEA did, and the emulsion viscosity was higher because triethylamine and TDaMblEeA7. iCmopmrpoavreistohne...
Hep andHSunsaturateddisaccharidesderived from the enzymatic treatment were separated and detected by a variety of CE methods including normal polarity at basic pH inabsence[118]and presence oftriethylamine[96], and by reverse polarity with an acidic buffer and direct[98, 112, 119, 120]or indirect...
In this work, the copolymerization of vari- ous NCAs was initiated with triethylamine in dichloroethane to obtain soluble and high molecular weight copolypeptides. EXPERIMENTAL Preparation of NCAs was carried out as reported previously.4 NCA were copolym- erized in dichloroethane at concentrations ...
A novel polymeric dye of aqueous dispersion polyurethane-disperse blue 14 was synthesized from poly(propylene glycol), 2,4-tolylene diisocyanate, dimethylol propionic acid, disperse blue 14 and triethylamine depending on a modified acetone process. 用聚氧化丙烯二醇、2,4-甲苯二异氰酸酯、二羟甲基丙...
With the occurrence of the Claisen-Schmidt reaction catalyzed by triethylamine, the O4 environment of the H2L ligand is destroyed, producing a new ligand H2L'. Which conflicts with the characteristics of Ni(II) atoms that are generally multi-coordinate, driving the occurrence of self-assembly ...