Latex and silver halide photographic light-sensitive material containing the same
AssigneeKonica Corporation
InventorsEiichi Ueda, Nobuo Kubo, Chiaki Nagaike, Yasuo Kurachi
Life of this patent
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Abstract
A latex comprising a polymer having an ethylenically unsaturated monomer unit containing an active methylene group and an ethylenically unsaturated monomer unit selected from methacrylic acid ester, acrylic acid ester, maleic acid ester and diene derivative, wherein said polymer is produced in the presence of a water soluble polymer through emulsion polymerization.
Claims14
An image forming material comprising a support and a layer, wherein said layer is formed by coating a composition containing latex comprising a latex polymer having an ethylenically unsaturated monomer unit containing an active methylene group and an ethylenically unsaturated monomer unit selected from methacrylic acid ester, acrylic acid ester, maleic acid ester and diene derivative produced in the presence of a water soluble polymer as a protective colloid through emulsion polymerization;
- said latex polymer being represented by the following Formula (1),
- −(A)x−(B)y−(C)z− Formula (1)
- wherein, A represents the ethylenically unsaturated monomer unit containing the active methylene group and is represented by the following Formula (2);
- B represents the ethylenically unsaturated monomer unit selected from methacrylic acid ester, acrylic acid ester or maleic acid ester or diene derivative, having a glass transition temperature of not higher than 35° C.;
- C represents an ethylenically unsaturated monomer unit, which has a glass transition temperature of higher than 35° C. other than A and B;
- x, y and z represent weight percentage ratio of each component in said polymer, and x, y and z are defined as and 2≦x≦20, 5≦y≦50 and x+y+z=100;
- CH2═C(R1)L—X Formula (2)
- wherein R1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atom(s) or a halogen atom, L represents a single bond or a divalent linking group, and X represents a monovalent group containing an active methylene group.
An image forming material having a support and a silver halide photographic light sensitive emulsion layer, wherein the image forming material contains latex comprising a latex polymer having an ethylenically unsaturated monomer unit containing an active methylene group and an ethylenically unsaturated monomer unit selected from methacrylic acid ester, acrylic acid ester, maleic acid ester and diene derivative produced in the presence of the water soluble polymer through emulsion polymerization;
- said latex polymer being represented by the following Formula (1),
- −(A)x−(B)y−(C)z Formula (1)
- wherein, A represents the ethylenically unsaturated monomer unit containing the active methylene group and is represented by the following Formula (2);
- B represents the ethylenically unsaturated monomer unit selected from methacrylic acid ester, acrylic acid ester maleic acid or diene derivative, and has a glass transition temperature of not higher than 35° C.;
- C represents an ethylenically unsaturated monomer unit, which has a glass transition temperature of higher than 35° C., other than A and B;
- x, y and z represent weight percentage ratio of each component in said polymer, and x, y and z are defined as and 2≦x≦20, 5≦y≦50 and x+y+z=100;
- CH2═C(R1)L—X Formula (2)
- wherein R1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atom(s) or a halogen atom, L represents a single bond or a divalent linking group, and X represents a monovalent group containing an active methylene group.
Dependencies are inferred from the claim text.