Process for the preparation of alkoxymethyl-isocyanates

Details Process for the preparation of alkoxymethyl-isocyanates Process for the preparation of alkoxymethyl-isocyanates

1978-10-02

1979-08-28

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453AL, C07C11800

Patent

active

041660676

ABSTRACT:
This disclosure relates to a process for the preparation of alkoxymethylisocyanates by reacting alkoxylmethyl tri-substituted ureas with isocyanates which have higher boiling points than the alkoxy methyl isocyanates produced. The process is also applicable to alkenoxy methyl tri-substituted ureas to make the corresponding isocyanates. Ureas of commercial purity may be used to obtain good yields of isocyanate when between about 0.03 and 0.2 mol of carbodiimide groups are present per mol of urea group. The carbodiimide containing compounds may also carry free isocyanate groups, in which case they should have a boiling point above that of the isocyanate product.

REFERENCES:
patent: 3379749 (1968-04-01), Hennig et al.
patent: 3898259 (1975-08-01), Hearsey

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