Reaction products of hydrazides and certain unsaturated esters

Details Reaction products of hydrazides and certain unsaturated esters Reaction products of hydrazides and certain unsaturated esters

1977-05-23

1978-07-18

Lilling, Herbert J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260840, 260842, 260844, 260851, 260859R, 526 23, 526 51, 528363, C08F29904, C08G 218, C08G 1222, C08G 8102

Patent

active

041016025

ABSTRACT:
Novel products can be prepared by reaction of monohydrazides and/or polyhydrazides, in particular dihydrazides, with mono-, di- or, poly-acrylyl compounds. The reactants can be chosen such that the resulting polymers are strictly linear as in the case of reaction of a monohydrazide with a diacrylyl compound as follows: ##STR1## wherein each (O) is a carbonyl oxygen, n is a positive integer, each R is hydrogen or a monovalent group, and each Q is an organic group, R and Q being free of functions which would interfere with the desired reaction at 80.degree. C. Various degrees of crosslinking can be achieved by reacting monohydrazdes with components containing an average of more than two acrylate double bonds per molecule or by reacting di-hydrazides with di- or poly-acrylyl compounds.
Fumaric, maleic and itaconic esters and acid esters add to hydrazides in a similar fashion as acrylates, the aliphatic double bond being similarly activated by the carbonyl group. However, methacrylates are totally inert to hydrazide at 80.degree. C.
These reaction products or polymers are useful as exterior or protective and decorative coating materials for bonderized steel and the like. Their impact resistance can be improved by reaction with toughening agents.

REFERENCES:
patent: 2785149 (1957-03-01), Wohnsiedler
patent: 3036028 (1962-05-01), Malashevitz
patent: 3381054 (1968-04-01), Blanc et a.
patent: 3673148 (1972-06-01), Vasta
patent: 3901840 (1975-08-01), Irvin et al.
patent: 3922447 (1975-11-01), Isaksen
patent: 3988386 (1976-10-01), Hesse et a.

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