Method of hardening gelatin
AssigneeFuji Photo Film Co., Ltd.
InventorsJun Yamaguchi, Takashi Naoi, Hidefumi Sera, Kunio Ishigaki, Masasi Ogawa
Life of this patent
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Abstract
A method of hardening gelatin which uses both a gelatin hardener and a polymer having a repeating unit of the formula (I): ##STR1## wherein R represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a halogen atom; M represents a hydrogen atom, an alkali metal atom, an alkali earth metal atom, or an organic base; X represents an alkyl group having 1 to 6 carbon atoms, an alkoxy group, an alkylamino group, or a halogen atom; m represents 0, 1 or 2; and n represents 1 or 2.
Claims9
A method of hardening gelatin in which said gelatin is hardened by both a gelatin hardener and a polymer having at least 0.01 mol % of a repeating unit of the formula (I):
- ##STR6## wherein R represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a halogen atom;
- M represents a hydrogen atom, an alkali metal atom, an alkali earth metal atom, or an organic base;
- X represents an alkyl group having 1 to 6 carbon atoms, an alkoxy group, an alkylamino group, or a halogen atom;
- m represents 0, 1 or 2;
- and n represents 1 or 2.
In a photographic material containing a gelatin emulsion layer, the improvement wherein said gelatin is hardened with a gelatin hardener and a polymer having at least 0.01 mol % of a repeating unit of the formula (I):
- ##STR7## wherein R represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a halogen atom;
- M represents a hydrogen atom, an alkali metal atom, an alkali earth metal atom, or an organic base;
- X represents an alkyl group having 1 to 6 carbon atoms, an alkoxy group, an alkylamino group, or a halogen atom;
- m represents 0, 1 or 2;
- and n represents 1 or 2.
In a method for forming microcapsules by co-acervating gelatin and hardening the gelatin wall, the improvement which comprises hardening said gelatin wall using both a gelatin hardener and a polymer having at least 0.01 mol % of a repeating unit of formula (I):
- ##STR8## wherein R represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a halogen atom;
- M represents a hydrogen atom, an alkali metal atom, an alkali earth metal atom, or an organic base;
- X represents an alkyl group having 1 to 6 carbon atoms, an alkoxy group, an alkylamino group, or a halogen atom;
- m represents 0, 1 or 2;
- and n represents 1 or 2.
Dependencies are inferred from the claim text.