| 摘要 |
<p>PURPOSE:To provide the subject ink having good adhesivity to a polyacetal resin poor in printability and slightly peeled even under high temperature for a long time by incorporating an acid capable of etching the polyacetal resin, bisphenol A a phthalic diester, etc., into the ink. CONSTITUTION:10 pts. wt. of a commercially available printing ink (solid con tent of 50%) is compounded and homogeneously mixed with (A) 0.1-1.0 pt. wt. of an acid (e.g. toluenesulfonic acid or hydrochloric acid), an acidic metal salt (e.g. zinc chloride) or a mixture thereof which etches a polyacetal, (B) 0.5-4 pts. wt. of bisphenol A or phenols mainly comprising bisphenol A and (C) 0.5-3 pts. wt. of a phthalic diester or liquid chlorinated paraffin to provide the objec tive ink. After dissolved in a solvent such as methanol, the components A and B are preferably compounded.</p> |
