首页>
外国专利>
METHOD FOR PRODUCING SILICA-BASED FINE PARTICLE-DISPERSED SOL,SILICA-BASED FINE PARTICLE-DISPERSED SOL OBTAINED THEREBY AND APPLICATIONS THEREOF
METHOD FOR PRODUCING SILICA-BASED FINE PARTICLE-DISPERSED SOL,SILICA-BASED FINE PARTICLE-DISPERSED SOL OBTAINED THEREBY AND APPLICATIONS THEREOF
展开▼
机译：制备二氧化硅基细颗粒分散溶胶的方法，获得的二氧化硅基细颗粒分散溶胶及其应用
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention relates to silica-based fine particle dispersion sols that are highly stable in an acidic region, processes for producing the sols, coating compositions containing the dispersion sol, curable coating films obtained from the coating composition, and substrates having the coating film. A process of the invention includes (1) a step of mixing an aqueous aluminate solution to an alkaline silica sol which contains water-dispersible silica fine particles and has a pH of 9.0 to 11.5, in a ratio such that the Al 2 O 3/ SiO 2 molar ratio is 0.005 to 0.050 wherein a silicon component contained in the silica sol is represented by SiO 2 and aluminum contained in the aluminate is represented by Al 2 O 3 ; (2) a step of heating the mixture liquid obtained in the step (1) to 60 to 200°C and stirring the mixture liquid at the temperature for 0.5 to 20 hours; and (3) a step of contacting the mixture liquid obtained in the step (2) with a cation exchange resin to remove by ion exchange alkali metal ions contained in the mixture liquid and thereby controlling the pH of the mixture liquid to be in the range of 3.0 to 6.0.
展开▼
机译：本发明涉及在酸性区域中高度稳定的基于二氧化硅的细颗粒分散溶胶，制备该溶胶的方法，包含该分散溶胶的涂料组合物，由该涂料组合物获得的可固化的涂膜以及具有该涂膜的基材。本发明的方法包括（1）将铝酸盐水溶液与碱性硅溶胶混合的步骤，该碱性硅溶胶含有水分散性二氧化硅细颗粒并且具有9.0至11.5的pH，其比例使得Al 2 O 3 / SiO 2摩尔比为0.005〜0.050，其中，硅溶胶中含有的硅成分为SiO 2，铝酸盐中含有的铝为Al 2 O 3。 （2）将步骤（1）中得到的混合液加热至60〜200℃，并在该温度下搅拌0.5〜20小时的工序。 （3）使步骤（2）中得到的混合液与阳离子交换树脂接触，通过离子交换除去混合液中所含的碱金属离子，将混合液的pH控制在上述范围内。 3.0至6.0。
展开▼
