Patent ID: 9346925
Filing Date: 2016-05-24
CPC Classification: C04B,C08J,C08K,C08L,C09D

Claim Text:
1. An aqueous epoxy resin dispersion comprising, based on the total solids weight in the epoxy resin dispersion, i) from 20 wt. % to 60 wt. %, a high molecular weight (Mw) epoxy resin; ii) from 30 wt. % to 70 wt. %, a liquid epoxy resin; and iii) from 2 wt. % to 20 wt. %, a dispersant having an interfacial tension such that a drop of the mixture of the dispersant in a melt of the high Mw and liquid epoxy resin blend against water is less than 2 dynes/cm, wherein the epoxy resin dispersion is a homogeneous dispersion; the high Mw epoxy resin has an epoxide equivalent weight of from 800 to 10000 g/eq, and a weight average molecular weight of from 3000 to 40000; and the liquid epoxy resin has an epoxide equivalent weight of from 100 to 200 g/eq, and a weight average molecular weight of from 200 to 600.