▎ 摘　　要

NOVELTY - Additive comprises 30-50 pts. wt. vegetable protein, 10-20 pts. wt. cellulose, 1-2 pts. wt. catalytic enzyme, 15-25 pts. wt. nano graphene and 10-20 pts. wt. water. USE - The additive is useful for aqueous paint (claimed). ADVANTAGE - The additive reduces volatile organic component (VOC) emissions in construction process of aqueous paint. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing additive, comprising (i) adding catalytic enzyme into vegetable protein to stage heating, (ii) forming milky-structured emulsion by dialysis, anion exchange layer and gel filtration chromatography, and (iii) adding water, cellulose and nano graphene into emulsion obtained in step (ii) to obtain final product.