| 摘要 |
PROBLEM TO BE SOLVED: To provide a paper agricultural sheet and a protection layer-forming composition for being applied to the paper agricultural sheet. SOLUTION: The protection layer-forming composition for the paper agricultural sheet comprises the following: (A) synthetic resin latex; (B) a mixture of styrene-acrylic emulsified polymer and emulsified-dispersion substance obtained by usingα,βunsaturated polybasic acid-added synthetic carbon hydride resin, paraffinic wax, natural and/or synthetic wax, a straight chain nonionic surface active agent and an oily nonionic surface active agent, and using inorganic alkali and/or organic alkali to be emulsified and dispersed; and (C) paper sludge charcoal, calcium carbonate or zeolite. The paper agricultural sheet is obtained by applying the protection layer-forming composition on at least one side of a paper material. COPYRIGHT: (C)2007,JPO&INPIT
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