Method for the production of blocked isocyanates

Details Method for the production of blocked isocyanates Method for the production of blocked isocyanates

1981-05-18

1983-07-12

Trousof, Natalie

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

Organic compounds

Amino nitrogen containing

C07C13100

Patent

active

043932380

ABSTRACT:
Blocked isocyanates of the general formula ##STR1## are obtained by converting terephthalic dialdoxime, isophthalic dialdoxime or an aliphatic, cycloaliphatic or aromatic ketoxime or an aromatic aldoxime of the general formula ##STR2## in the presence of 10-100 Mol % sodium, potassium or calcium hydroxide, with the sodium, potassium or calcium salt of a bis-N-chloramide of the general formula

REFERENCES:
patent: 3726921 (1973-04-01), Kamal
patent: 3897498 (1975-07-01), Zengel et al.
patent: 4282167 (1981-08-01), Sy et al.
Morrison & Boyd "Organic Chemistry" 2nd Ed. (1966), pp. 735-736, Allyn and Bacon, Publ.
Smith, Peter A. S. "The Chemistry of Open-Chain Organic Nitrogen Compounds" vol. (1965) p. 197, W. A. Benjzmin, Publ.

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