| 摘要 |
PURPOSE:To obtain the titled thickener suitable for a coating additive agent, and a grease thickener, etc., by cross-linking a copolymer of a hydrophobic vinyl monomer and a vinyl monomer having a water soluble group such as carboxylic or hydroxyl group with 2 valent metal compd. capable of reacting with the water soluble group. CONSTITUTION:The copolymer is obtd. by dissolving the hydrophobic vinyl monomer such as methacrylic acid methylester, etc., and the vinyl monomer having the carboxyl group such as acrylic acid, and hydroxy ethyl methacrylate, etc., and/or the hydroxy group in a suitable solvent, followed by polymerizing and separating it according to a conventional method. The obtd. copolymer is added to the oil solvent in an amount of about 2-5% to increase viscosity of said solvent, and subsequently the 2 valent metal compd. such as aluminum alkoxide and titanium alkoxide, etc., is added to the obtd. solvent, thereby occurring rapidly the cross-linking reaction, resulted in obtaining the thickened oily solvent or the gelled solvent. Thus, the extensive oily solvent such as an aromatic hydrocarbon, a halogenated hydrocarbon, an ester and a ketone, etc., is effectively thickened or gelled. |
