Igwe na-arụ ọrụ nke ọma maka acrylic copolymers na-enweghị mmiri VOC, nke bụ isi iji mee ka viscosity dị elu na ọnụ ọgụgụ shear dị elu, na-ebute ngwaahịa nwere omume rheological nke Newtonian.