| 摘要 |
<p>A flushing vehicle for lithographic inks is the reaction product of a tall oil rosin-modified maleic ester resin with an acid number of less than about 30, and about 2-16 wt.%, based on the weight of the ester, of a polyamide resin with an amine number less than about 110. The flushing vehicle is prepared by heating a reaction mixture containing the rosin-modified ester and the polyamide resin to a temperature of about 190-280 °C; and holding at a temperature of 190-280 °C until the viscosity of the reaction mixture becomes constant.</p> |
