Process for preparation of ethylenically unsaturated isocyanates

Details Process for preparation of ethylenically unsaturated isocyanates Process for preparation of ethylenically unsaturated isocyanates

1997-12-02

1999-11-23

Barts, Samuel

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

Organic compounds

Isocyanate esters

560215, 560222, C07C26300

Patent

active

059903457

ABSTRACT:
A process for the preparation of ethylenically unsaturated isocyanates is described, which process comprises silylating an appropriate ethylenically unsaturated urethane precursor at the urethane nitrogen and converting the resulting unsaturated N-silyl-urethane by means of thermolysis at elevated temperature into the desired isocyanate. The unsaturated isocyanates obtainable according to the process are suitable, for example, as monomers or comonomers in the preparation of polymerisates or copolymerisates.

REFERENCES:
patent: 4707466 (1987-11-01), Engel et al.
Chemical Abstracts, Synthetic High Polymers, vol. 106, 1987, sectioni 106:102820s pp. 9-10 and DE-A-3,523,692.
Derwent Abstract AN 70-20886R.

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