公开(公告)号：US20080188575A1

公开(公告)日：2008-08-07

申请号：US11910716

申请日：2006-04-04

申请人： Jose Manuel Gaspar Martinho ,  Laura Maria Ilharco De Almeida Santos ,  Jose Paulo Sequira Farinha ,  Alexandra Marina Abrantes Fidalgo ,  Pedro Oliveira Martinho

发明人： Jose Manuel Gaspar Martinho ,  Laura Maria Ilharco De Almeida Santos ,  Jose Paulo Sequira Farinha ,  Alexandra Marina Abrantes Fidalgo ,  Pedro Oliveira Martinho

IPC分类号： C01B33/155

CPC分类号： B01J13/0091

摘要： The invention relates to a process for the preparation of monolithic xerogels and aerogels of silica/latex hybrids under subcritical conditions. In the two-stage synthesis of these alcogels in the presence of an acid-base catalyst, the hydrolysis and polycondensation of a silicon alkoxide are carried out in an organic medium containing excess water. A latex consisting of polybutyl methacrylate and polybutyl acrylate, modified with alkoxysilane groups, is first synthesized and then incorporated in the mixture either in the first stage in order to effect its co-hydrolysis with the silicon alkoxide, or in the second stage to effect its co-condensation with the previously hydrolysed colloidal silica. The resulting alcogels are aged, washed, and dried under subcritical conditions. This process gives hybrid products containing 0.1-50 wt-% of latex and having a density of 300-1300 kg/m3, a porosity of 40-85%, a specific surface area of 400-900 m2/g and a mean pore diameter of 2-12 nm. The products are resistant to atmospheric humidity and moisture, have better mechanical properties than the corresponding inorganic products, and can be used as thermal, acoustic and electrical insulators.

摘要翻译： 本发明涉及在亚临界条件下制备二氧化硅/胶乳混合物的整体干凝胶和气凝胶的方法。 在酸碱催化剂的存在下，在这两种酸酐的两阶段合成中，硅醇盐的水解和缩聚在含有过量水的有机介质中进行。 首先合成由甲基丙烯酸聚丁酯和丙烯酸丁酯（由烷氧基硅烷基改性）组成的胶乳，然后在第一阶段中将其混入混合物中以实现其与硅氧烷的共水解，或在第二阶段中实现其 与先前水解的胶体二氧化硅共缩合。 在亚临界条件下，将所得的凝胶老化，洗涤和干燥。 该方法产生含有0.1-50重量％胶乳并且密度为300-1300kg / m 3，孔隙率为40-85％，比表面积为400-900m 2 / g，平均孔径 2-12nm。 该产品耐大气湿度和湿度，具有比相应的无机产品更好的机械性能，可用作热，声和电绝缘体。

公开(公告)号：US20080290321A1

公开(公告)日：2008-11-27

申请号：US11921873

申请日：2006-06-30

申请人： Marie-Therese Charreyre ,  Bernard Mandrand ,  Jose Manuel Gaspar Martinho ,  Paula Relogio ,  Jose Paulo Sequeira Farinha

发明人： Marie-Therese Charreyre ,  Bernard Mandrand ,  Jose Manuel Gaspar Martinho ,  Paula Relogio ,  Jose Paulo Sequeira Farinha

IPC分类号： C09K11/06

CPC分类号： C08F8/30 ,  C08F2/38 ,  C08F8/34 ,  C08F220/36 ,  C09B69/103 ,  C09B69/109

摘要： The invention relates to fluorescent polymers soluble in an aqueous solution carrying at least 5 fluorophores which are distributed on the polymer and which exhibit the following properties: the fluorophores are water-soluble, the fluorophores are not self-associated in water at a concentration of less than or equal to 10−4 mol/l, preferably at a concentration of less than or equal to 10−3 mol/l, the fluorophores which are free in the aqueous solution have a molar extinction coefficient of greater than 1000 M−1·cm−1, preferably greater than 5000 M−1·cm−1, the fluorophores which are free in the aqueous solution have a quantum yield of greater than 0.3, preferably greater than 0.6, said polymers having a fluorescence amplification factor of greater than or equal to 0.35 per kg/mol of polymer, preferably greater than 0.45 per kg/mol of polymer.

摘要翻译： 本发明涉及可溶于携带至少5个荧光团的水溶液中的荧光聚合物，其分布在聚合物上并且具有以下性质：荧光团是水溶性的，荧光团在水中不是以相对较少的浓度自相关 不大于或等于10-4mol / l，优选浓度小于或等于10-3mol / l，在水溶液中游离的荧光团具有大于1000M-1的摩尔吸光系数。 cm -1，优选大于5000M -1 cm -1，所述水溶液中游离的荧光团的量子产率大于0.3，优选大于0.6，所述聚合物的荧光放大系数大于或等于 等于每kg / mol聚合物0.35，优选大于0.45 / kg / mol聚合物。