| 摘要 |
<p>PURPOSE:To obtain a set-off preventing agent effective in preventing the setting- off and residue on plate and blanket and useful for offset printing ink by impregnating a resin varnish, etc., into starch grain under heating. CONSTITUTION:The objective preventing agent can be produced by thermally impregnating a resin varnish and/or a drying oil (e.g., linseed oil and tung oil) into starch grain (preferably silicone-treated rice starch or corn starch).</p> |
