| 摘要 |
<p>An emulsion polymer blend comprises: (a) a first latex; and (b) a second latex. Latex (a) is multi-stage consisting of (i) a soft stage polymer having a Tg less than 50 deg.C, and (ii) a hard stage polymer having a Tg of 20-160 deg.C. The Tg of (i) is lower than that of (ii). Latex (b) does not form a film at ambient temp. Amts. of (a) and (b) are 95-40 wt.%, and 5-60 wt.%. Amts. of (i) and (ii) are 95-50 wt.%, and 5-50 wt.%.</p> |
