The present invention provides a compound, a composition, a cured object, an optically anisotropic body, and a reflective film which have high refractive index anisotropy n and excellent light resistance, and which exhibit liquid crystallinity. The compound of the present invention is a compound represented by General Formula (1).

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The present invention provides a compound, a composition, a cured object, an optically anisotropic body, and a reflective film which have high refractive index anisotropy n and excellent light resistance, and which exhibit liquid crystallinity. The compound of the present invention is a compound represented by General Formula (1).

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A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.

A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article. A carbonyl compound is useful as a raw material for producing the polymerizable compound. (In the formula (I), Y.sup.1 to Y.sup.8 represent C(O)O, G.sup.1 and G.sup.2 represent a C.sub.1-20 divalent linear aliphatic group, Z.sup.1 and Z.sup.2 represent a C.sub.2-10 alkenyl group that is unsubstituted, or substituted with a halogen atom, A.sup.x represents a C.sub.2-30 organic group with at least one aromatic ring, A.sup.y represents a hydrogen atom or C.sub.1-20 alkyl group, A.sup.1 represents a trivalent aromatic group, A.sup.2 and A.sup.3 represent a C.sub.3-30 divalent alicyclic hydrocarbon group, A.sup.4 and A.sup.5 represent a C.sub.6-30 divalent aromatic group or the like, and Q.sup.1 represents a hydrogen atom.) ##STR00001##

Provided is a method for producing a polymerizable compound represented by a formula (I) comprising: a step (1) that reacts a compound represented by a formula (II) with 2,5-dihydroxybenzaldehyde in an organic solvent in the presence of a base to obtain a reaction mixture including a compound represented by a formula (III); and a step (2) that adds a compound represented by a formula (IV) and an acidic aqueous solution to the reaction mixture obtained by the step (1) to effect a reaction, wherein A represents a hydrogen atom, a methyl group or the like, L represents a leaving group, n represents an integer from 1 to 20, X represents an oxygen atom, a sulfur atom, C(R.sup.1)(R.sup.2) or the like, R represents a hydrogen atom, an organic group or the like, and each of R.sup.X represents a hydrogen atom, a halogen atom or the like. According to the present invention, provided is a method for producing a polymerizable compound represented by a formula (I) at high purity and at high yield. ##STR00001##

Provided is a method for producing a polymerizable compound represented by a formula (I) comprising: a step (1) that reacts a compound represented by a formula (II) with 2,5-dihydroxybenzaldehyde in an organic solvent in the presence of a base to obtain a reaction mixture including a compound represented by a formula (III); and a step (2) that adds a compound represented by a formula (IV) and an acidic aqueous solution to the reaction mixture obtained by the step (1) to effect a reaction, wherein A represents a hydrogen atom, a methyl group or the like, L represents a leaving group, n represents an integer from 1 to 20, X represents an oxygen atom, a sulfur atom, C(R.sup.1)(R.sup.2) or the like, R represents a hydrogen atom, an organic group or the like, and each of R.sup.X represents a hydrogen atom, a halogen atom or the like. According to the present invention, provided is a method for producing a polymerizable compound represented by a formula (I) at high purity and at high yield. ##STR00001##

Arylclobutene-containing multi-functional monomers are useful in the preparation of arylcyclobutene-based polymer coatings. Compositions comprising one or more arylclobutene-containing multi-functional monomers and one or more oligomers comprising as polymerized units one or more arylcyclobutene monomer provide arylcyclobutene-based polymer coatings having reduced stress. Such compositions are useful in the manufacture of electronic devices.

Arylclobutene-containing multi-functional monomers are useful in the preparation of arylcyclobutene-based polymer coatings. Compositions comprising one or more arylclobutene-containing multi-functional monomers and one or more oligomers comprising as polymerized units one or more arylcyclobutene monomer provide arylcyclobutene-based polymer coatings having reduced stress. Such compositions are useful in the manufacture of electronic devices.

A system can include a heating means for heating a photocurable composition over a substrate; an actinic radiation source configured to emit actinic radiation at a wavelength less than 700 nm; and a controller configured to determine a targeted temperature to be produced by the first heating means to achieve a photocuring temperature of the photocurable composition when the photocurable composition is exposed by the actinic radiation source, wherein the photocuring temperature is greater than an ambient temperature. A method can include dispensing the photocurable composition over a substrate; photocuring a layer of the photocurable composition at a photocuring temperature higher than ambient temperature to form a cured layer; and baking the cured layer to form a baked layer. The system and method can allow a thickness change of layer to be 0% or closer to 0%.

A system can include a heating means for heating a photocurable composition over a substrate; an actinic radiation source configured to emit actinic radiation at a wavelength less than 700 nm; and a controller configured to determine a targeted temperature to be produced by the first heating means to achieve a photocuring temperature of the photocurable composition when the photocurable composition is exposed by the actinic radiation source, wherein the photocuring temperature is greater than an ambient temperature. A method can include dispensing the photocurable composition over a substrate; photocuring a layer of the photocurable composition at a photocuring temperature higher than ambient temperature to form a cured layer; and baking the cured layer to form a baked layer. The system and method can allow a thickness change of layer to be 0% or closer to 0%.