Abstract:
PROBLEM TO BE SOLVED: To provide a polycarbonate resin composition containing aluminum oxide nanoparticles which has excellent moldability, thermal stability in residence and high transparency, dimensional stability and excellent mechanical properties combined. SOLUTION: The polycarbonate resin composition contains an organic acid and aluminum oxide, has a melt mass-flow rate of ≥11 g/10 min as measured by the JIS K 7210 method under the conditions of a temperature of 280°C, a nominal load of 2.16 kg, and a nozzle dimension ratio (L/D) of 8/2. A No.2 dumbbell specimen of a 0.2 mm thick film of the composition obtained by thermal press-forming as provided for in the JIS K 7113 method has a stress at break of ≥8 MPa as measured under the conditions of a temperature of 23°C, a humidity of 50% RH, and a tensile rate of 50 mm/min. Preferably, the organic acid is an ≥8C organic sulfonic acid, especially the one containing an aromatic ring in the molecule. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation:解决问题的方案:提供一种含有氧化铝纳米粒子的聚碳酸酯树脂组合物,其具有优异的成型性,停留热稳定性和高透明度,尺寸稳定性和优异的机械性能。 解决方案:聚碳酸酯树脂组合物含有有机酸和氧化铝,通过JIS K 7210方法,在280℃的温度条件下测定熔体质量流量≥11g/ 10min, 标称负荷2.16公斤,喷嘴尺寸比(L / D)为8/2。 通过JIS K 7113方法中规定的通过热压成型得到的组合物的0.2mm厚的薄膜的No.2哑铃试样,在温度23℃的条件下测定的断裂应力为≥8MPa C,湿度为50%RH,拉伸速度为50mm / min。 优选地,有机酸是≥8C的有机磺酸,特别是分子中含有芳环的有机磺酸。 版权所有(C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition which essentially comprises a polycarbonate resin and is excellent in transparency, color tone and physical properties such as mechanical strength, dimensional stability and heat resistance. SOLUTION: The resin composition is composed of the polycarbonate resin and a metal oxide particle dispersed therein. The metal oxide particle has a sodium ion content of ≤10 ppm calculated in terms of oxide. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition having excellent mechanical strength such as rigidity or impact resistance, surface hardness, thermal stability and transparency and suitably used as practical organic glass, etc., such as window glass. SOLUTION: The resin composition is obtained as follows. A surface layer having epoxy groups is formed on the surface of inorganic oxide fine particles having ≤380 nm average primary particle diameter and the resultant inorganic oxide fine particles are then compounded in a monomer of a polycarbonate resin to form a polymerization reaction solution. The polycarbonate resin is synthesized from the polymerization reaction solution by a transesterification method. Thereby, the resin composition in which the inorganic oxide fine particles are bound through the surface layer to the polycarbonate resin with covalent bonds and dispersed in the polycarbonate resin is produced. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide methods for producing a dispersion sol of inorganic fine particles in an organic solvent and an inorganic fine particle-dispersed resin composition, in each of which inorganic fine particles are dispersed uniformly in the organic solvent so that the functions of inorganic nanoparticles to be used in an organic functional material are exhibited industrially sufficiently. SOLUTION: The method for producing the dispersion sol of inorganic fine particles in the organic solvent comprises: the first step of adding a dispersant to an aqueous dispersion sol of inorganic fine particles; the second step of freeze-drying or spray-drying the dispersant-added aqueous dispersion sol to obtain dried fine powder; and the third step of dispersing the dried fine powder in the organic solvent. The method for producing the inorganic fine particle-dispersed thermoplastic resin composition comprises: a step of dispersing the dried fine powder, which is obtained by going through the first and second steps, in a thermoplastic resin of a molten state or a step of preparing a mixture of the dispersion sol of inorganic fine particles in the organic solvent, which is obtained by going through the first, second and third steps, and the thermoplastic resin and removing the organic solvent from the prepared mixture. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a polycarbonate resin composition (master batch) containing metal oxide particles in a high concentration and in an extremely excellent dispersion state, while keeping transparency, toughness, and adhesion to an inorganic thin film, such as a hard coat, and to provide a method for producing a polycarbonate resin composition having a small coefficient of linear expansion by using the composition. SOLUTION: This polycarbonate resin composition contains an aromatic polycarbonate resin and the metal oxide particles having a number-average dispersion particle diameter of 1-50 nm, wherein the metal oxide particles combine with an organic component of the composition, the polycarbonate resin composition has an ash content of 5-80 wt.%, and a molecular weight corresponding to a maximum peak in a GPC chromatogram is in a range of 1,000 to 35,000, when a chloroform-soluble component of the polycarbonate resin composition is subjected to GPC chromatography. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain inorganic particulates of a nanoorder level whose dispersibility into a resin is excellent, and to provide a resin composite having a high elastic modulus and a low linear expansion coefficient using the same. SOLUTION: In the metal oxide particle composite, phosphoric acid or phosphoric acid ester and aromatic sulfonic acids are chemically bonded to metal oxide particles. The resin composite is composed of the metal oxide particle composite and a resin. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition having excellent mechanical strength while holding transparency. SOLUTION: The resin composition is obtained as follows. The surfaces of metal oxide particles are treated with an acid or a base and the surfaces of the metal oxide particles are then treated with a surface treating agent to provide a metal oxide particle composite. The resultant metal oxide particle composite is then compounded with a resin. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a polymer nano-composite containing a surface modified nano-filler excluding bad influences of dysfunction such as filler aggregation, deterioration of molecular weight and discoloring by a surface modifier such as a coupling agent which cannot chemically be combined with the nano-filler, a condensate, etc., formed by mutually combining the surface modifier. SOLUTION: The polymer nano-composite is produced as follows. The nano-filler is dispersed in a solvent and a prescribed modifier is added to modify the surface. The solvent containing the nano-filler is directly washed and the free modifier present as a residual component of the modifier in the solvent is removed to afford a surface modified nano-filler. The resultant surface modified nano-filler is compounded and dispersed in a prescribed organic polymer. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technique sufficiently improving physical properties such as transparency, elastic characteristics, impact resistance, thermal dimensional stability of thermoplastic resins containing metal oxide particles by preventing/suppressing the generation or progression of the lowering of the molecular weight of polycarbonates and ester-based resins. SOLUTION: A method for producing resin compositions comprising metal oxide particles and a resin having at least either one of ester bonds or carbonate bonds in a repeating unit structure is provided. The method comprises a process of preparing a metal oxide particle-containing sol in which a factor promoting the molecular weight-lowering is reduced or removed by at least one method selected from a group consisting of (a) the ultra filtration method, (b) the dialysis method and (c) the strong acid exchange method. COPYRIGHT: (C)2009,JPO&INPIT