| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ink for use in offsets which consists of natural resins in all the components and is excellent in the biodegradability and which gives printed matters with good physical properties and good deinking ability. <P>SOLUTION: The biodegradable offset ink is prepared by heating up to 150°C-300°C three components of a polylactic acid, a rosin and a drying oil varnish. The drying oil used is linseed oil, tung oil, sesame oil, rapeseed oil, cotton-seed oil or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
