| 摘要 |
Proteinaceous material is hardened by addition thereto, as a hardening agent or agents, of a compound or compounds having the general formula Fo2S-Ar-A-A1-(CH2)n-X where Ar represents an arylene nucleus; A represents a single bond or a bivalent radical e.g. -NH- or -O-; A1 represents a carbonyl or a sulphonyl radical; n is a positive integer from 1 to 3, and X represents a halogen atom. The material to which the hardening agent is added may form, or may subsequently be used to form, a proteinaceous layer e.g. a light sensitive layer such as a gelatino silver halide emulsion layer, such a layer possibly being one of a plural layer material suitable for use in a photographic reproduction process. The preparation of N-2-chloropropionyl-m-fluorosulphonylanilide by the reaction of m-fluorosulphonylanilide with chloropropionyl chloride in anhydrous ether; m-fluorosulphonyl phenacyl bromide by the reaction of bromine with m-acetyl benzene sulphofluoride in acetic acid; N-chloroacetyl-m-fluorosulphonyl anilide by reaction of m-fluorosulphonyl aniline with chloroacetyl chloride in anhydrous ether; N-chloromethylsulphonyl-m-fluorosulphonyl anilide by the reaction of m-fluorosulphonyl aniline with chloromethyl sulphochloride in benzene; and N-bromoacetyl-m-fluorosulphonyl anilide by the reaction of m-fluorosulphonyl anilide with bromoacetyl bromide in anhydrous ether, are described. Specifications 614,155, 654,630, 654,631, 822,061, 860,631, 860,632 and 891,221 are referred to.
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