Hardening of proteinaceous materials
AssigneeAgfa-Gevaert
InventorsArthur Henri De Cat, Valere Frans Danckaert, Francis Jeanne Sels, Robert Joseph Pollet
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Abstract
Proteinaceous materials, especially gelatin, are hardened by incorporating therein at least one bis-epoxy compound corresponding to one of the formula: ##STR1## wherein: X represents a 1,4-piperazinylene group or a monomethyl or dimethyl-substituted 1,4-piperazinylene group, or represents a 1,2-pyrazolidinylene group, And n is 0 or an integer from 1 to 4. The proteinaceous material, especially the gelatin, is subsequently applied to form a photographic silver halide emulsion layer, a backing layer, a protective layer, a filter layer or any other photographic auxiliary layer.
Claims3
A process for hardening a thin layer of proteinaceous material, which comprises incorporating in the proteinaceous material at least one bis-epoxy compound corresponding to one of the formulae:
- ##STR3## wherein:
- X represents a 1,4-piperazinylene group or a monomethyl- or dimethyl-substituted 1,4-piperazinylene group, or represents a 1,2-pyrazolidinylene group,
- and n is 0 or an integer from 1 to 4.
Dependencies are inferred from the claim text.