... 10%~20% HPMC in paint production process, reduce your costs. Water retention agent of mastic, emulsion paint; and it's acted as ... so on. Its solution possesses good function of bodying, security, water conservation, film-forming, suspending. It can be used c securely ... applied at the building material industry. It is acted as water retention agent in mastic, emulsion paint; and in daubing, as the ...