ChemicalBook CAS DataBase List PolycarbodiiMide

PolycarbodiiMide synthesis

15synthesis methods

Product Name:PolycarbodiiMide
CAS Number:151-51-9
Molecular formula:CH2N2
Molecular Weight:42.04

67-56-1 Synthesis

67-56-1
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Yield:-

Reaction Conditions:

with MoVPFeCeCrKSiO;ammonia at 350;Green chemistry;

Steps:

2 Example 2: Synthesis of carbodiimide

The catalyst composition, amount and reactor are the same as in Example 1. Methanol was fed by a liquid metering pump with a flow rate of 0.03 ml / m (liquid), an ammonia to alcohol ratio of 2, an air flow rate of 120 ml / m at room temperature, an ammonia flow rate of 33.6 ml / m.Methanol, ammonia and air mixture into the preheater, preheated to about 350 , and then into the reactor.The catalyst loading (or raw material weight space velocity) was 0.48 g ammonia / g catalyst.hour, 0.45 g methanol / g catalyst.hour.Inlet gas airspeed 2336h-1. Furnace temperature 350 .Atmospheric reaction conditions, the feedstock on the catalyst residence time of about 0.67 seconds.The reaction product enters the water absorber for absorption.After 60 ° C vacuum evaporation dehydration,A carbodiimide 6-mer H- (N = C = N-) 6H light yellow solid was obtained.

References:

CN106995388,2017,A Location in patent:Paragraph 0039; 0040; 0041