摘要:
A polylactic acid resin composition includes a polylactic acid resin in an amount of 99% by mass or more. A complex viscosity η*(20) of the polylactic acid resin composition is 2×103 Pa·s or higher. A ratio of the complex viscosity η*(20) to a complex viscosity η*(5), which is represented by [η*(20)/η*(5)], is 0.6 or higher. The complex viscosity η*(5) and the complex viscosity η*(20) are complex viscosities respectively measured 5 minutes and 20 minutes after the start of measurement using a parallel plate-type rotary viscometer under measurement conditions below: [Measurement Conditions]
Parallel plates: 20 mm in diameter, made of aluminum; Temperature: 200° C.; Gap between the parallel plates: 1.00 mm; Frequency: 1 Hz (6.28 rad/s); Atmosphere: under dry air (dew point: −60° C.); and Size of measurement sample: a strip that is 30 μm thick, 7 mm wide, and 35 mm long.
摘要:
To provide a polymer production apparatus, which contains: a first supply unit configured to supply raw materials including a monomer; a second supply unit configured to supply a compressive fluid; a contact unit configured to bring the monomer into contact with the compressive fluid; and a reaction unit configured to allow the monomer, which has been brought into contact with the compressive fluid, to react in the presence of the compressive fluid, wherein the reaction unit contains one, or two or more extrusion devices, and one, or two or more stirring devices.
摘要:
Provided is a polymer product that has a melting point difference (Tm1−Tm0) of 3° C. or more between a polymer melting point Tm0 before it is heated and a polymer melting point Tm1 after it is heated under a nitrogen atmosphere for 60 minutes at a temperature that is higher than the highest polymer melting point by from 10° C. to 50° C.
摘要:
To provide a polymer product, which contains aliphatic polycarbonate, wherein an oxide unit content in the aliphatic polycarbonate is 20 mol % or less, and wherein a monomer content in the aliphatic polycarbonate is 500 ppm or less, where the monomer is a monomer that is a base of the aliphatic polycarbonate.
摘要:
A toner prepared by a method comprising granulating while polymerizing a ring-opening polymerizable monomer with a catalyst under the presence of a surfactant and a colorant in a compressible fluid.
摘要:
A method for producing a polymer, which contains bringing a polymerizable monomer and a compressive fluid into contact with each other to melt or dissolve the polymerizable monomer, followed by polymerizing the polymerizable monomer in the presence of an electrophile serving as an initiator.
摘要:
A method for producing a polymer, including polymerizing a ring-opening polymerizable monomer in a compressive fluid with a metal-free organic catalyst to produce a polymer.
摘要:
Provided is a porous material made of at least an aliphatic polyester resin or an aliphatic polycarbonate resin, and having a porosity of 70% or higher, wherein a polystyrene equivalent weight average molecular weight of the resin measured by gel permeation chromatography is 300,000 or greater.
摘要:
To provide a polylactic acid composition, containing: polylactic acid, wherein the polylactic acid composition contains a ring-opening polymerizable monomer residue in a concentration of 100 ppm by mass to 5,000 ppm by mass, and wherein the polylactic acid composition has a weight average molecular weight of 100,000 or more but less than 300,000 as measured by gel permeation chromatography, a yellow index (YI) value of 5 or less, and a Charpy impact strength of 10 kJ/m2 or more.
摘要翻译:为了提供含有聚乳酸的聚乳酸组合物,其中所述聚乳酸组合物含有浓度为100质量ppm〜5000质量ppm的开环聚合性单体残基,其中,所述聚乳酸组合物的重均分子量 黄色指数(YI)值为5以下,夏比冲击强度为10kJ / m 2以上,通过凝胶渗透色谱法测定的重量为100,000以上且小于300,000。
摘要:
A polymer production apparatus, including: supplying unit containing first supplying unit to supply raw materials containing monomer, and second supplying unit to supply compressive fluid; contacting unit to bring the monomer and the compressive fluid into contact together; and outlet configured to discharge reaction product of the monomer, wherein reaction unit is provided between the contacting unit and the outlet, where the reaction unit is to pass the monomer from the contacting unit side to the outlet side, while allowing the monomer to carry out a polymerization reaction in the presence of the compressive fluid, and wherein the reaction unit contains circulation unit containing first pipe and second pipe, where a fluid is passed through the first pipe from the contacting unit side to the outlet side, and the second pipe is to return the fluid from return port provided upstream extrusion unit to inlet provided upstream the return port.