摘要:
A toner is provided that contains a crystalline polyester resin comprising a polycondensed resin of a dicarboxylic acid represented by the following formula (1) with a diol represented by the following formula (2). A content of a cyclic ester represented by the following formula (3) in the toner, measured by a thermal extraction gas chromatographic mass spectrometry at a thermal extraction temperature of 160° C., is from 1 to 200 ppm in terms of toluene: where n represents an integer of from 2 to 12; where m represents an integer of from 2 to 12; and where n represents an integer of from 2 to 12, m represents an integer of from 2 to 12, and m+n≥6 is satisfied.
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, which contains: bringing a monomer containing a vinyl bond into contact with a compressive fluid and melting or dissolving the monomer containing a vinyl bond, followed by carrying out addition polymerization of the monomer containing a vinyl bond in the presence of 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:
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:
A composition includes a crystalline polymer and a compound that denatures at a temperature equal to or lower than a melting point of the crystalline polymer. The composition is substantially free from a solvent.
摘要:
A toner is provided. The toner comprises a binder resin, a colorant, and a release agent. The toner satisfies the following relations (1) and (2): 3.0×102≤G′(50)/G′(80) (1) T(107)≥75 degrees C. (2) where G′(50) represents a storage elastic modulus at 50 degrees C., G′(80) represents the storage elastic modulus at 80 degrees C., and T(107) represents a temperature at which the storage elastic modulus is 107 Pa or higher during a temperature fall from 100 degrees C. to 30 degrees C., in a measurement of dynamic viscoelasticity of the toner.
摘要:
Provided is a polymer product having a branched chain made of polyester, and a weight average molecular weight of 200,000 or greater when measured by gel permeation chromatography.
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。