| 摘要 |
A method of forming a dry powder paint binder from milk or plant proteins and other natural materials comprises a shearing operation to produce consistent, homogeneous and uniform particles. The binder may be mixed with pigments and mineral fillers (such as kaolin, magnesium silicate and calcium carbonate) to form a dry powder paint. Other ingredients may include preservatives (such as zinc oxide and potassium sorbate), fungicides, antifoaming agents (such as silica sand), cellulosic thickeners, polysaccharide dispersants, and activators (such as calcium hydroxide, ammonium carbonate, and borax). The dry powder paint may contain 15-30% binder, 50-70% filler, 0.5-20% pigment, 1-10% activator, 0.5-2% preservative, and 0.05-1% dispersant. In a preferred method, the shearing operation uses a high speed horizontal blade for a period of 30-300 seconds to produce particles of 60-80 microns. Further methods of forming the binder and the dry powder paint as well as a liquid paint containing same are also disclosed. |
