Sumitomo Chemical Company, Limited

Haruki Okawa

Noriyuki Hida

Daichi Fujimoto

Shinnosuke Yoshioka

Tatsuaki Kasai

Nobuyuki Hatanaka

Katsuaki Miyazaki

A liquid crystal composition is provided containing a first liquid crystal compound represented by formula (1): and a second liquid crystal compound represented by formula (2):  Also provided is a method for producing the liquid crystal composition having a desired wavelength dispersion characteristic.

Liquid crystal composition

A liquid crystal composition is provided containing a polymerizable liquid crystal compound, the composition having high preservation stability when dissolved in a solvent and also having the ability to restrain the development of orientation defects of the liquid crystal compound. A method of producing such a liquid crystal composition is also provided with ease. The liquid crystal composition includes a first polymerizable liquid crystal compound having five or more ring structures on its principal chain and represented by the following formula (A) and a second polymerizable liquid crystal compound having five or more ring structures and represented by the following formula (B).

Liquid crystal composition, method of producing the same, and retardation film constituted from the same

A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound represented by formula (1), Rrepresents a hydrogen atom or the like; Rrepresents an acyl group having 1 to 20 carbon atoms or the like; Rrepresents a hydrogen atom or the like; and Y represents a group of formula (Y1). In the group of formula (Y1), * represents a bonding site with N, or a group of formula (Y2); and in the group of formula (Y2), * represents a bonding site with N; Pand Peach independently represent &#x2014;S&#x2014; or the like; and Qand Qeach independently represent &#x2550;N&#x2014; or the like. 

Dichroic dye compound, polarizing film, and uses thereof

A composition is provided which contains a compound represented by Formula (1) below and a polymerizable smectic liquid crystal compound: In Formula (1), Rrepresents a hydrogen atom or a C1-C20 alkyl group; Rthrough Reach independently represent a C1-C4 alkyl group; n, p, and q are each independently an integer of 0 to 2; and Ris (i) a nitrogen-containing saturated heterocyclic group which is a 6-membered ring and in which N is bonded to a phenylene group, or (ii) a group in which N is bonded to at least one C1-C10 alkyl group.

Composition

The present invention provides, as a composition containing a smectic liquid crystal compound which can be used for production of a homogeneous optical film at a temperature around room temperature, a composition containing a smectic liquid crystal compound having a 1,4-cyclohexyl group, which smectic liquid crystal compound having the 1,4-cyclohexyl group contains (i) 100 parts by mass of a smectic liquid crystal compound having a trans-1,4-cyclohexyl group and (ii) 0.1 parts by mass to 10 parts by mass of a smectic liquid crystal compound having a cis-1,4-cyclohexyl group.

Composition, optical film including composition, and method of producing optical film

A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1): In Formula (1), Rrepresents a hydrogen atom or a C1-C20 alkyl group; Rthrough Rare substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; m, p, and q are each independently an integer of 0 to 2; and Ris (i) a C1-C10 alkyl group in which a hydrogen atom is substituted by at least one hydroxy group or (ii) a C1-C10 alkyl group which has carbon atoms and in which at least one &#x2014;O&#x2014; is inserted between the carbon atoms.

Dichroic azo compound and composition containing the same

A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound of formula (1), Rrepresents a hydrogen atom or the like; Rrepresents a hydrogen atom or the like; Rrepresents a hydrogen atom or the like; Z represents &#x2014;CO&#x2014; or the like; and Y represents a group of formula (Y1). In the group of formula (Y1), * represents a bonding site with N, or a group of formula (Y2); and in the group of formula (Y2), * represents a bonding site with N; Pand Peach independently represent &#x2014;S&#x2014; or the like; and Qand Qeach independently represent &#x2550;N&#x2014; or the like. 

A liquid crystal composition containing a polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain and a polymer (B) of the polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain, which inhibits occurrence of an orientation defect of a liquid crystal compound and exhibits excellent storage stability when dissolved in a solvent is provided.

A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound of formula (1), Rrepresents an alkyl group having 1 to 20 carbon atoms or the like; Rrepresents an acyl group having 1 to 20 carbon atoms or the like; Rrepresents a hydrogen atom or the like; and Y represents a group of formula (Y1). In the formula (Y1), * represents a bonding site with N, or a group of formula (Y2). In the formula (Y2), * represents a bonding site with N; Pand Peach independently represent &#x2014;S&#x2014; or the like; and Qand Qeach independently represent &#x2550;N&#x2014; or the like. 

The object of the present invention is to provide a light absorptive compound which is capable of selectively absorbing light around a wavelength of 400 nm, and is excellent in solubility in various solvents and/or affinity with hydrophobic substances. Also, the object of the present invention is to provide an optical film containing such a light absorptive compound, and a cured layer. A compound represented by the following formula (I): 

Light absorptive compound, polymer composition containing the compound, polymer film, and cured layer

A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1): In Formula (1), Rrepresents a hydrogen atom or a C1-C20 alkyl group; Rthrough Rare substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; n, m, and p are each independently an integer of 0 to 2; and Arrepresents a nitrogen-containing saturated heterocyclic group which is a 5 to 8-membered ring and in which (i) N is bonded to a phenylene group and (ii) at least one &#x3b2;-position is an oxygen atom or a sulfur atom.

Dichroic pigment compounds and compositions containing the same

Provided is a composition which is to be a raw material of a polarizing film having excellent light fastness. The composition includes a polymerizable liquid crystal compound and a compound represented by the following formula (1): wherein E represents an electron attractive group having at least 3 carbon atoms or the following group: wherein R represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms;Ar represents a group selected from the following groups: and A represents a group selected from the following groups: wherein R, Rand R, and l, m, n, p, and q are defined in the specification.

Composition and polarizing film

Provided is a composition that can form a polarizing film with high dichroic ratio, which contains a compound having a function as a dichroic dye and having a local maximum absorption in a wavelength range of 350 to 550 nm. The composition contains a compound represented by the formula (1) and a polymerizable liquid crystal compound:  wherein Y represents a group represented by the formula (Y1) or the formula (Y2) 

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Niihama, Japan

Haruki Okawa