The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.

The present invention relates to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber with enhanced spinnability, and more specifically, to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber including: pelletizing a resin manufactured by adding 1.08 equivalents to 1.12 equivalents of acetic anhydride to raw material monomers including hydroxy benzoic acid, hydroxy naphthoic acid, biphenol, terephthalic acid, and isophthalic acid, followed by solid-phase polycondensation, and melt-spinning under oil conditions in which winding-up improving oil is diluted to 0.5% to 2% and silicone spinning oil for high temperature is diluted to 0.5% to 2%, respectively, with water as a solvent.

The present invention relates to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber with enhanced spinnability, and more specifically, to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber including: pelletizing a resin manufactured by adding 1.08 equivalents to 1.12 equivalents of acetic anhydride to raw material monomers including hydroxy benzoic acid, hydroxy naphthoic acid, biphenol, terephthalic acid, and isophthalic acid, followed by solid-phase polycondensation, and melt-spinning under oil conditions in which winding-up improving oil is diluted to 0.5% to 2% and silicone spinning oil for high temperature is diluted to 0.5% to 2%, respectively, with water as a solvent.

A toner and a method for producing the toner, wherein; the toner comprising a toner particle comprising a polyester resin, and has a softening point of 150° C. or less; the toner particle has the polyester resin within 100 nm from a surface of the toner particle, and where a value obtained by dividing an amount of counted ions for a structure represented by following formula (A) measured from the surface of the toner particle to a depth of 100 nm by TOF-SIMS by a total amount of counted ions is taken as a standard value, one or more peaks of the standard value are present within a range of 100 nm from the surface of the toner particle, and where A(dmax) denotes a standard value at a maximum peak and A(0) denotes a standard value on the toner particle surface, formula 1.15≤A(dmax)/A(0)≤5.00 is satisfied.

##STR00001##

A polymer composition is disclosed that comprises a dielectric filler distributed within a polymer matrix containing at least one thermotropic liquid crystalline polymer is provided. The polymer composition exhibits a dissipation factor of about 0.01 or less as determined at a frequency of 2 GHz and a dielectric constant of about 6 or more as determined at a frequency of 2 GHz.

A polymer composition is disclosed that comprises a dielectric filler distributed within a polymer matrix containing at least one thermotropic liquid crystalline polymer is provided. The polymer composition exhibits a dissipation factor of about 0.01 or less as determined at a frequency of 2 GHz and a dielectric constant of about 6 or more as determined at a frequency of 2 GHz.

An electrostatic charge image developing toner containing: toner particles; and silica particles having a compaction aggregation degree of from 60% to 95% and a particle compaction ratio of from 0.20 to 0.40, an electrostatic charge image developer containing the electrostatic charge image developing toner, and a toner cartridge that accommodates the electrostatic charge image developing toner and is detachable from an image forming apparatus.

An electrostatic charge image developing toner containing: toner particles; and silica particles having a compaction aggregation degree of from 60% to 95% and a particle compaction ratio of from 0.20 to 0.40, an electrostatic charge image developer containing the electrostatic charge image developing toner, and a toner cartridge that accommodates the electrostatic charge image developing toner and is detachable from an image forming apparatus.

Provided is an image forming method, wherein after image formation with a printing material containing a release agent, a specific active ray-curable liquid substance is applied with a roll coating method, and when a coordinate (A, V) of a point indicating a contact angle A (°) and a viscosity V (mPa.Math.s) corresponding to the contact angle Av (°) is plotted in a coordinate system having a contact angle A (°) on a horizontal axis and a viscosity V (mPa.Math.s) on a vertical axis, the coordinate is included in a coordinate region R (A, V) on an upper side of a contact angle-viscosity curve represented by a formula on a right side of a specific expression.

Provided is an image forming method, wherein after image formation with a printing material containing a release agent, a specific active ray-curable liquid substance is applied with a roll coating method, and when a coordinate (A, V) of a point indicating a contact angle A (°) and a viscosity V (mPa.Math.s) corresponding to the contact angle Av (°) is plotted in a coordinate system having a contact angle A (°) on a horizontal axis and a viscosity V (mPa.Math.s) on a vertical axis, the coordinate is included in a coordinate region R (A, V) on an upper side of a contact angle-viscosity curve represented by a formula on a right side of a specific expression.