| 摘要 |
<p>PURPOSE:To prevent the crack or the stripping against bending an image and to improve fixing property by containing a cooligomer of ethylene and alpha-olefin. CONSTITUTION:The oligomer to be used of ethylene and alpha-olefin is a hydrocarbon which does not contain polar group and propylene, n-butylene, alpha-amylene and n-hexane are used as alpha-olefin. The hydrocarbon of these structure is obtained by using the middle or low pressure method by coordination anionic polymerization by the use of the Ziegler catalyst, using the high pressure method by radical polymerization or using the thermal decomposition or oxidation decomposition of low density polyethylene. The cooligomer is obtained by blowing to polymerize ethylene and n-butylene into a catalyst made by adding at first cyclohexane, next a tetradecylaluminum solution and a cyclohexane solution of titanium tetrachloride into a separable flask replaced with gaseous nitrogen.</p> |
