摘要:
A fiber structure is obtained by spinning of a solution of an L-lactic acid condensate and a D-lactic acid condensate by electrospinning. It is possible to provide a fiber structure comprising fibers with extremely small fiber diameters, as well as excellent heat resistance and biodegradability.
摘要:
A resin composition containing a mixture produced by blending a crystalline polyamide expressed e.g. by formula (1) (in the formula, R1 is a bivalent organic aromatic group or aliphatic group having a carbon number of 2 to 30, optionally having substituent and optionally containing non-reactive groups such as ether group and aromatic group in the main chain, and Ar1 is an aromatic residue having a carbon number of 6 to 45 and optionally having substituent) with a thermoplastic polyester. The resin composition has excellent mechanical characteristics such as high elastic modulus, flow properties and heat-resistance and is suitable as a material for an electronic part for surface mounting.
摘要:
Provided are a microneedle and a microneedle array which have both aspects of safety and easiness to use and can administer a predetermined dose of a medical agent without causing a pain by smoothly running into the skin surface layer of a patient, the microneedle comprising a frustum and a forward end portion thereon, having a forward end apex angle in the range of 15 to 60° and a forward end diameter in the range of 1 to 20 μm and satisfying the following expression (1), H/D≧5 (1) (H: Height of the whole, D: Diameter of bottom surface of the frustum).
摘要:
To provide a resin composition having high heat resistance with a high melting point and excellent melt stability and hydrolysis resistance, a molded article of the resin composition and a method of manufacturing the resin composition; the resin composition comprises an aromatic polyester (component A) having a butylene terephthalate skeleton as the main constituent unit and polylactic acid (component B) having a melting point of 190° C. or higher.
摘要:
There are provided a resin composition comprising a polylactic acid which (i) comprises a poly-L-lactic acid (component B-1) and a poly-D-lactic acid (component B-4), (ii) has a weight ratio of the component B-1 to the component B-4 (component B-1/component B-4) of 10/90 to 90/10, and (iii) shows a proportion of melt peaks at 195° C. or higher to all melt peaks in a temperature rising process in measurement by a differential scanning calorimeter (DSC) of at least 20%; a molded article of the resin composition; and methods for producing the resin composition and the molded article.
摘要:
The object of this invention is to provide a resin composition that contains a polymer obtained from biomass resources and constitutes molded articles excellent in heat resistance, mechanical properties and durable stability, this invention including a resin composition comprising (i) a resin component containing 95 to 5% by weight of an aromatic polycarbonate (component A) and 5 to 95% by weight of polylactic acid (component B), (ii) 0.001 to 10 parts by weight, per 100 parts by weight of the resin component, of a phosphoric ester metal salt (component C), and (iii) 0.01 to 5 parts by weight, per 100 parts by weight of the polylactic acid (component B), of a terminal blocker (component F), the stereo-complex crystal content (X) of the following expression (I) being 80% or more, X (%)={ΔHb/(ΔHa+ΔHb)}×100 (I) wherein ΔHa and ΔHb are a melting enthalpy (ΔHa) of a crystal melting point that appears at lower than 190° C. and a melting enthalpy (ΔHb) of a crystal melting point that appears at 190° C. or higher but less than 250° C., respectively, in a temperature-elevation process by a differential scanning calorimeter (DSC), and molded articles thereof.
摘要:
A composition which comprises polylactide and has excellent heat stability, color and hydrolytic resistance. The composition comprises (i) polylactide, (ii) a metal catalyst and (iii) a hypophosphorous acid-based deactivator or a metaphosphoric acid-based deactivator.
摘要:
A polycarbonate containing an ether diol residue producible from a polysaccharide and expressed by the following formula (1), and a diol residue expressed by the following formula (2) —O—(CmH2m)—O— (2) (here, m is an integer of 2 to 12), wherein said ether diol residue amounts to 65-98 wt. % of all the diol residues, and having a glass transition temperature of 90° C. or higher.
摘要翻译:含有可由多糖生成并由下式(1)表示的醚二醇残基的聚碳酸酯和由下式(2)表示的二醇残基<?in-line-formula description =“In-line Formulas”end = “(”)“ - O-(C m H 2 m) - O-(2)<?在线公式描述=”在线公式“结束 =“尾”→(这里,m为2〜12的整数),其中所述醚二醇残基为65-98重量%。 所有二醇残基的百分比,玻璃化转变温度为90℃以上。
摘要:
A microorganism which belongs to the genus Rhizobium and has the ability of degrading an aromatic polyester, and a method of degrading an aromatic polyester by using the microorganism. According to this method, the aromatic polyester can be degraded safely and relatively swiftly at a low cost.
摘要:
A polycarbonate containing an ether diol residue producible from a polysaccharide and expressed by the following formula (1), and a diol residue expressed by the following formula (2) —O—(CmH2m)—O— (2) (here, m is an integer of 2 to 12), wherein said ether diol residue amounts to 65-98 wt. % of all the diol residues, and having a glass transition temperature of 90° C. or higher.
摘要翻译:含有可由多糖生成并由下式(1)表示的醚二醇残基的聚碳酸酯和由下式(2)表示的二醇残基<?in-line-formula description =“In-line Formulas”end = “(”)“ - O-(C m H 2 m) - O-(2)<?在线公式描述=”在线公式“结束 =“尾”→(这里,m为2〜12的整数),其中所述醚二醇残基为65-98wt。 所有二醇残基的百分比,玻璃化转变温度为90℃以上。