| 摘要 |
<p>A surface modifying agent for surface treating a filler in water which comprises 100 parts by weight of a zirconate base or/and aluminate base coupling agent(s) whose unhydrolyzable side chains have a solubility parameter (x) of 6.5 - 12, and 3 to 30 parts by weight of a nonionic surface active agent blended therewith having an HLB value (y) of 2 - 30 and containing no protonic hydrogen(s) in its molecule, wherein x and y satisfy a relationship of 4x - 24 </= y </= 4x - 18, as well as another surface modifying agent for the same purpose which comprises a mixture of 100 parts by weight of the above one or two coupling agents having a viscosity of 200 cps or more with 30 - 3000 parts by weight of a water-insoluble solvent, where the total mol fraction value (z) of the solubility parameters of the unhydrolyzable side chains of the coupling agent(s) and the solvent is 6.5 - 12, and 3 to 1000 parts by weight of the above nonionic surface active agent blended therewith, wherein z and y satisfy a relationship of 4z - 24 </= y </= 4z - 18. The inventive surface modifying agents have an excellent preservation stability and can perform water repellent treatment of fillers such as calcium carbonate in water.</p> |
