Water-based emulsion polymer designed to offer excellent water whitening resistance, high level of scrub resistance, washability, alkali resistance and adhesion compared with traditional acrylic co-polymers, particularly when used in high PVC paints. It is an excellent choice for interior primer and ceiling paint formulations. Utilizes an advanced technology which can rapidly build hardness during film formation that leads to excellent early resistance to chalking, water, hydrolysis and alkali. APEO- free (1) and does not have added formaldehyde or formaldehyde generators (2). Facilitates the formulation of paints to address stringent environmental standards. Suitable for flat, sheen and semigloss paints for interior application and offers an excellent balance of cost to performance properties in higher PVC paints.