| 摘要 |
NEW MATERIAL:The compound of formula I and II (1-3 of X are residue of polyperfluoroalkylene ether derivative having a molecular weight of 200-5,000 and containing carboxyl or hydroxymethyl in the molecule and the other X are hydrolyzable group selected from C1-8 alkoxy, residue of C2-4 dihydric alcohol corresponding to one valency, acetylacetone and ketoester). EXAMPLE:Tetratitanoxane octabutoxide of formula III. USE:A surface-treating agent. PREPARATION:The objective compound can be produced by dissolving a tetraalkoxytitanium having C3-4 alkoxy as substituent in an alcohol solvent, cooling the solution at <=5 deg.C, adding equimolar amount of water based on the raw material to start the hydrolytic polycondensation reaction and slowly raising the temperature of the system to complete the hydrolytic polycondensation reaction. |
