Masked isocyanates

Details Masked isocyanates Masked isocyanates

1973-10-15

1978-09-12

Rollins, Alton D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D25706

Patent

active

041137345

ABSTRACT:
Masked isocyanates in which the isocyanate group or groups may be generated by heating above 100.degree. C are formed by tetrazolinones and bis(tetrazolinones) corresponding to the formula : ##STR1## wherein X is hydrogen, halogen, nitro, alkyl (1-4 C) or a group of formula: ##STR2## and R is an aliphatic, aromatic or araliphatic hydrocarbon radical. The bis(tetrazolinones) may be utilized to crosslink upon heating polymers containing active hydrogen atoms. The heating may occur image-wise or record-wise so that layers composed of mixtures of polymers and bis(tetrazolinones) can be used as heat-sensitive recording materials.

REFERENCES:
elderfield, Heterocyclic compounds, vol. 8, (New York, 1967), pp. 11-19.
Richter's Organic Chemistry, vol. 1, pp. 202, 204, Nordemann Publishing Company, Amsterdam-New York, (1934).
Degering, An Outline of Organic Nitrogen Compounds, pp. 267, 268, University Lithoprinters, Ypsilanti, Mich., (1945).

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