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Title:
PREPARATION OF COATING FLUID FOR LUBRICATIVE LAYER, COATING FLUID FOR LUBRICATIVE LAYER, PRODUCTION OF LUBRICATIVE SUBSTRATE, LUBRICATIVE SUBSTRATE AND SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL
Document Type and Number:
Japanese Patent JP2001033913
Kind Code:
A
Abstract:

To obtain a silver halide photographic sensitive material excellent in scuffing and wear resistances, traveling stability, etc., by preparing a coating fluid for a lubricative layer through a step for mixing a specified polyvinyl alcohol solution with a specified lubricant dispersion.

A polyvinyl alcohol having ≥96 mol% saponification degree is dissolved in water under heating to ≥40°C to form a polyvinyl alcohol solution. A lubricant is dispersed in water to form a lubricant dispersion. The polyvinyl alcohol solution is mixed with the lubricant dispersion to prepare the objective coating fluid for a lubricative layer. Since the polyvinyl alcohol is hardly dissolved in an organic solvent, in order to form a uniform solution, ≥35 wt.% water is preferably contained in the solvent. The lubricant may be a known lubricant but preferably has ≥50°C melting point. A silicone compound, a higher aliphatic carboxylic acid or its derivative may be used as the lubricant.


Inventors:
KAWAKAMI AKIRA
ITO MINEKO
Application Number:
JP20763999A
Publication Date:
February 09, 2001
Filing Date:
July 22, 1999
Export Citation:
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Assignee:
KONISHIROKU PHOTO IND
International Classes:
C08J3/07; C10M145/04; G03C1/76; G03C1/85; C10N40/00; (IPC1-7): G03C1/76; C08J3/07; C10M145/04; G03C1/85



 
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