NEW AND STABLE AQUEOUS HYBRID BINDER

摘要

The present invention provides a new and simple processed stable colloidal silica containing polymeric binders, without modification, and to get to a novel coating composition, especially, aqueous coating composition that has more efficient stain resistance/removal function and also under a reasonable and controllable cost.

主权项

1. A stable aqueous hybrid binder comprising
a) at least one water dispersible or soluble polymer, comprising from 1 to 10 wt %, by weight based on the dry weight of the polymer, as copolymerized units of an ethylenically unsaturated monomer carrying at least one functional group; and b) at least one colloidal silica; wherein the surface acid value of the water dispersible or soluble polymer is from 1.0 to 4.0 mg KOH/g dried polymer, the serum phase acid value is from 0 to 2.3 mg KOH/g dried polymer, and the final pH value of the hybrid binder is equal or above 8.5 by using neutralizer.