The present invention relates to a process for producing polymer beads having a porous polymeric matrix in which is distributed solid particulate material; the process comprising: providing a dispersion having a dispersed phase and a continuous phase, the dispersed phase comprising: polymerisable monomer composition, solid particulate material, non-polymeric porogen; and no polymeric porogen; wherein the polymerisable monomer composition comprises; at least one mono-ethylenically unsaturated monomer, and at least one crosslinking monomer having at least two ethylenically unsaturated groups that are separated by at least 4 consecutive acyclic atoms; and polymerising the polymerisable monomer composition in the presence of the non-polymeric porogen and solid particulate material to form the porous polymeric matrix of the beads.

The present invention relates to a process for producing polymer beads having a porous polymeric matrix in which is distributed solid particulate material; the process comprising: providing a dispersion having a dispersed phase and a continuous phase, the dispersed phase comprising: polymerisable monomer composition, solid particulate material, non-polymeric porogen; and no polymeric porogen; wherein the polymerisable monomer composition comprises; at least one mono-ethylenically unsaturated monomer, and at least one crosslinking monomer having at least two ethylenically unsaturated groups that are separated by at least 4 consecutive acyclic atoms; and polymerising the polymerisable monomer composition in the presence of the non-polymeric porogen and solid particulate material to form the porous polymeric matrix of the beads.

A polymerizable liquid crystal composition is presented which can form a polymer that allows formation of a uniform homeotropic alignment even without forming an alignment film on the supporting substrate and has excellent chemical strengths such as heat resistance and solvent resistance. The polymerizable liquid crystal composition includes at least one type of polyfunctional polymerizable liquid crystal compound and a cardo-type fluorene monomer, wherein based on a total amount of the polyfunctional polymerizable liquid crystal compound, a content of a monofunctional polymerizable liquid compound is less than 5.0% by weight.

A hierarchical porous polymeric material and its preparation method in the field of porous polymeric materials provided. The preparation method comprises: (1) mixing hydrophobic silica particles, an initiator, a polymerizable monomer, a crosslinking agent, a co-crosslinking agent and a pore-forming agent together, uniformly stirring to obtain a reaction mixture; (2) adding water into the reaction mixture and stirring until a gel emulsion is formed; and (3) carrying out staged thermal polymerization on the gel emulsion to obtain the hierarchical porous polymeric material. The present application can effectively regulate and control the contents and sizes of pores and throats, and obtain a material with hierarchical micro-porous structures. The good heat transfer and zero explosion in the polymerization process enable high product qualification rate. The wet material has rich pores, small resistance in mass transfer process and fast drying rate. Meanwhile, the obtained material has excellent machinability and static load resistance.

A hierarchical porous polymeric material and its preparation method in the field of porous polymeric materials provided. The preparation method comprises: (1) mixing hydrophobic silica particles, an initiator, a polymerizable monomer, a crosslinking agent, a co-crosslinking agent and a pore-forming agent together, uniformly stirring to obtain a reaction mixture; (2) adding water into the reaction mixture and stirring until a gel emulsion is formed; and (3) carrying out staged thermal polymerization on the gel emulsion to obtain the hierarchical porous polymeric material. The present application can effectively regulate and control the contents and sizes of pores and throats, and obtain a material with hierarchical micro-porous structures. The good heat transfer and zero explosion in the polymerization process enable high product qualification rate. The wet material has rich pores, small resistance in mass transfer process and fast drying rate. Meanwhile, the obtained material has excellent machinability and static load resistance.

Provided is a kit including a curable composition for imprinting which contains a polymerizable compound having an aromatic ring and a composition for forming an underlayer film for imprinting which contains a polymer and a solvent, in which the polymer contains at least one kind of specific constitutional unit and has a polymerizable group, a film formed of the composition for forming an underlayer film for imprinting is a solid film at 23 C., and a portion that has a continuous partial structure containing an aromatic ring which is included in the polymerizable compound and accounts for 60% by mass or more of the polymerizable compound is common to a continuous partial structure containing an aromatic ring which is included in a substituent R in a side chain in the polymer. Furthermore, the present invention relates to a composition for forming an underlayer film for imprinting which is used in combination with a curable composition for imprinting; a laminate; a method for producing a laminate; a method for producing a cured product pattern; and a method for manufacturing a circuit board.

Provided is a kit including a curable composition for imprinting which contains a polymerizable compound having an aromatic ring and a composition for forming an underlayer film for imprinting which contains a polymer and a solvent, in which the polymer contains at least one kind of specific constitutional unit and has a polymerizable group, a film formed of the composition for forming an underlayer film for imprinting is a solid film at 23 C., and a portion that has a continuous partial structure containing an aromatic ring which is included in the polymerizable compound and accounts for 60% by mass or more of the polymerizable compound is common to a continuous partial structure containing an aromatic ring which is included in a substituent R in a side chain in the polymer. Furthermore, the present invention relates to a composition for forming an underlayer film for imprinting which is used in combination with a curable composition for imprinting; a laminate; a method for producing a laminate; a method for producing a cured product pattern; and a method for manufacturing a circuit board.

The optical film (retardation film) has a good antireflection ability not only in a direction perpendicular to the film but also over a wide angle range and provides an optical film that can maintain its ability even after the film is subjected to high temperature. It can provide an elliptically polarizing plate and a display device that use the optical film. The optical film includes a first retardation layer and a second retardation layer. The first retardation layer is formed of a cured product of a polymerizable composition containing at least one compound A having at least three polymerizable groups and satisfying (formula 1) and at least one compound B satisfying (formula 2). The second retardation layer is formed of a cured product of a polymerizable composition containing at least one compound satisfying (formula 1) and/or at least one compound B satisfying (formula 2).

An object of the present invention is to provide a polymerizable composition with which a polymer having a high degree of hardness can be produced. Another object is to provide, for example, an optically anisotropic body, a phase retardation film, an optical compensation film, an antireflection film, a lens, and a lens sheet that are composed of the polymerizable composition and a liquid crystal display element, an organic light-emitting display element, a lighting element, an optical component, a coloring agent, a security marker, a laser emission member, a polarizing film, a coloring material, and a printed item that are produced using the polymerizable composition. The present invention provides a polymerizable composition including a polymerizable compound represented by General Formula (IA) which has a specific structure including a plurality of polymerizable groups.

Provided is a masking tape to be used at the time of formation of an electromagnetic wave shield, which is excellent in followability to irregularities, and which is capable of being peeled off from an irregular surface without any adhesive residue. The masking tape for forming an electromagnetic wave shield includes a pressure-sensitive adhesive layer that is increased in modulus of elasticity through active energy ray irradiation to 20 times or more as high as that before the active energy ray irradiation, wherein the pressure-sensitive adhesive layer has a modulus of elasticity after the active energy ray irradiation of 500 MPa or less.