Preparation of methylenedi(phenylurethane)

Details Preparation of methylenedi(phenylurethane) Preparation of methylenedi(phenylurethane)

1990-06-29

1991-11-19

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 25, C07C26906

Patent

active

050668277

ABSTRACT:
Methylenedi(phenylurethane), MDU, is selectively prepared by condensing an alkyl N-phenylcarbamate with a methylenating agent, e.g., formaldehyde or a precursor thereof, in the presence of a catalytically effective amount of the protonic acid, hydrofluoric acid.

REFERENCES:
patent: 4266070 (1981-05-01), May

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