NettetPhosphonitrile chloride Cl2NP CID 74596 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, … NettetThe reaction of PCl 5 and NH 4 Cl in 1,1,2,2-tetrachloroethane has been studied by 31 P n.m.r. analysis of samples withdrawn from the reaction mixture at regular intervals. …
Phosphonitrilic chloride trimer 99 940-71-6 - Sigma-Aldrich
Nettet14. des. 1995 · A silanol condensation-equilibration catalyst is provided in the form of a mixture of a linear phosphonitrilic chloride and an effective amount of a protic acid having a pKa≤5, such as HCl. A material capable of generating a protic acid in situ during equilibration, such as an organohalosilane, is also effective. NettetIn summary, -we have taken a linear phosphonitrilic chloride polymer, which is an insoluble (in benzene) waxy solid having a molecular weight of about 700-1700 and … chf due to icm
σ- and π-Bond Strengths in Main Group 3—5 Compounds
NettetHalophosphazene polymers such as linear phosphonitrilic chloride polymers are prepared in two stages by (i) heating a nitrogen source (e.g., NH 3; NH 4 Cl; etc.) with an excess of a phosphorus source (e.g., PCl 5; PCl 3 +Cl 2; P+Cl 2; etc.) so that hydrogen halide is evolved and halophosphazene is formed, and (ii) heating at least a portion of … NettetPolymer-grade cyclic phosphonitrilic chloride trimer can be obtained from crude cyclic polyphosphonitrilic chlorides by forming a solution of the crude cyclics, water washing the solution, distilling solvent to form a hot concentrate, cooling to form a precipitate and distilling the precipitate to form polymer-grade trimer. NettetLinear phosphonitrilic chloride oligomers having a number average degree of @ polymerization from 2 to 9 are produced in high yield. a. Ui Croydon Printing Company Ltd . A process linear (PCl3) PCl3, Cl2 NH3 are concurrently fed into the medium white maintain- 100°C to of the PCl3:NH3 ... chfe1001