Patent ID: 11939487
Assignee: CHINA MACHINERY FOUNDRY MATERIAL TECHNOLOGY (FUJIAN) CO., LTD
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A spirooxazine photochromic exterior wall coating, comprising the following components by mass percent: 0.6%-1.5% of spirooxazine photochromic compound, 40%-45% of resin, 0.3%-1% of dispersant, 0.2%-0.3% of antifoamer, 1%-3% of additive, 22%-24% of pigment and 30%-32% of solvent, wherein the additive comprises 0.9 wt %-2 wt % of NaCl or KCl solution; the solvent is prepared by mixing ethanol, ethyl acetate and acetone by a mass a ratio of 4:3:3 or 2:1:1; and the spirooxazine photochromic compound comprises 1,3,3-trimethyl-3H-indolinospironaphthoxazine.