HYDROPHOBIC SURFACE MODIFIED ALUMINAS FOR POLYMER COMPOSITIONS AND METHOD FOR MAKING THEREOF

• Main Authors: RABAIOLI MARIA ROBERTA, LOSCUTOVA RYAN
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2018
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; DYES; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

A method of producing new hydrophobic aluminas by i) providing a slurry comprising an alumina compound, the slurry having a pH of above 5.5; ii) mixing an organic composition comprising carboxylic acids with long hydrocarbon chains with the slurry to form an acid modified slurry; iii) hydrothermally conditioning the acid modified slurry to form a hydrothermally aged slurry; and iv) drying the hydrothermally aged slurry. The new hydrophobic aluminas have surface modified structures distinguished by a low humidity content and very small nanoparticles. These new hydrophobic aluminas can be uniformly dispersed in a substrate, for example polymers. 提供了种制备新的疏水性氧化铝的方法，所述方法包括：i)提供包含氧化铝化合物的浆料，所述浆料具有大于5.5的pH；ii)将包含具有长烃链的羧酸的有机组合物与所述浆料混合，以形成酸改性的浆料；iii)水热调理所述酸改性的浆料，以形成水热熟化的浆料；和iv)将所述水热熟化的浆料干燥。新的疏水性氧化铝具有表面改性的结构，其特征在于低含水量和非常小的纳米粒子。这些新的疏水性氧化铝可以均匀地分散在基质例如聚合物中。