Abstract: A liquid crystal polymer, composition, liquid crystal polymer film, laminated material and method of forming liquid crystal polymer film are provided. The liquid crystal polymer includes a first repeating unit, a second repeating unit, a third repeating unit, and a fourth repeating unit. The first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), and the fourth repeating unit has a structure of Formula (IV), a structure of Formula (V) or a structure of Formula (VI) wherein A1, A2, A3, Z1, R1, R2, R3 and Q are as defined in the specification.

Abstract: Liquid-crystal polymer is composed of the following repeating units: 10 mol % to 35 mol % of 10 mol % to 35 mol % of 10 mol % to 50 mol % of and 10 mol % to 40 mol % of 10 mol % to 40 mol % of or a combination thereof. Each of AR1, AR2, AR3, and AR4 is independently AR5 or AR5-Z-AR6, in which each of AR5 and AR6 is independently or a combination thereof, and Z is —O—, or C1-5 alkylene group. Each of X and Y is independently H, C1-5 alkyl group, CF3, or wherein R2 is H, CH3, CH(CH3)2, C(CH3)3, CF3, or n=1 to 4; and wherein R1 is C1-5 alkylene group.

Abstract: A composite material is provided. The composite material includes (a1) first polyamide polymerized from C10-12 diamine and terephthalic acid or an ester thereof, or (a2) second polyamide polymerized from C8-12 diamine, terephthalic acid or an ester thereof, and 4-aminoalkyl benzoic acid or an ester thereof; and (b) sheet-shaped material having an aspect ratio of 40 to 80. The composite material can be used in the lens base and the barrel of a lens module.

Abstract: A liquid-crystal polymer includes at least one repeating unit having a spiro structure, and the repeating unit occupies 1 mol % to 20 mol % of the liquid-crystal polymer. The liquid-crystal polymer is composed of the following repeating units: 1 mol % to 20 mol % of 10 mol % to 35 mol % of 10 mol % to 35 mol % of 10 mol % to 50 mol % of and 10 mol % to 40 mol % of AR1 is wherein each of ring R and ring S is independently a C3-20 ring, ring R and ring S share a carbon atom, and each of K1 and K2 is independently a C5-20 conjugated system. Each of AR2, AR3, AR4, and AR5 is independently AR6 or AR6—Z—AR7.

Abstract: An inkjet ink is provided. The inkjet ink includes a modified high-performance engineering plastic, a polar solvent, and a wetting agent. Additionally, a 3D printing method and a 3D printing object are provided. The modified high-performance engineering plastic includes modified polyphenylene sulfide, modified polyether-ether-ketone, modified polyether sulfone, modified polyphenylsulfone, or modified polysulfone.

Abstract: A liquid-crystal polymer includes at least one repeating unit having a spiro structure, and the repeating unit occupies 1 mol % to 20 mol % of the liquid-crystal polymer. The liquid-crystal polymer is composed of the following repeating units: 1 mol % to 20 mol % of 10 mol % to 35 mol % of 10 mol % to 35 mol % of 10 mol % to 50 mol % of and 10 mol % to 40 mol % of AR1 is wherein each of ring R and ring S is independently a C3-20 ring, ring R and ring S share a carbon atom, and each of K1 and K2 is independently a C5-20 conjugated system. Each of AR2, AR3, AR4, and AR5 is independently AR6 or AR6—Z—AR7.

Abstract: Liquid-crystal polymer is composed of the following repeating units: 10 mol % to 35 mol % of 10 mol % to 35 mol % of 10 mol % to 50 mol % of and 10 mol % to 40 mol % of 10 mol % to 40 mol % of or a combination thereof. Each of AR1, AR2, AR3, and AR4 is independently AR5 or AR5-Z-AR6, in which each of AR5 and AR6 is independently or a combination thereof, and Z is —O—, or C1-5 alkylene group. Each of X and Y is independently H, C1-5 alkyl group, CF3, or wherein R2 is H, CH3, CH(CH3)2, C(CH3)3, CF3, or n=1 to 4 ; and wherein R1 is C1-5 alkylene group.

Abstract: A method for preparing a compound and a method for preparing a polymer employing the same are provided. The method for preparing a compound includes reacting a compound having a structure represented by Formula (I) with a compound having a structure represented by Formula (III) in the presence of a compound having a structure represented by Formula (II) to obtain a compound having a structure represented by Formula (IV) wherein Ar1 is substituted or unsubstituted aryl group; X is —O—, —S—, or —NH—; R1 is independently hydrogen or C1-6 alkyl group; R2 is hydroxyl group, C1-6 alkyl group, phenyl group, or tolyl group; and R3 is independently C1-6 alkyl group, C5-8 cycloalkyl group, or C2-6 alkoxyalkyl group.

Abstract: A method for preparing a cationic sulfoxide intermediate having the following formula wherein Ar1 and Ar2 are substituted or unsubstituted aryl groups that are the same or different, includes reacting hydrogen peroxide with (i) a compound having the following formula (2) or sulfonic acid R?SO3H, wherein R? is CH3, CF3, phenyl, toluene, or OH, and (ii) a cationic thioether intermediate having the following formula (4) to obtain the cationic sulfoxide intermediate: wherein R is a substituted or unsubstituted C1-C6 alkyl group; and wherein Ar1 and Ar2 are as defined above and Y is an anion.

Abstract: A polymer is provided. The polymer has a repeating unit having a structure represented by Formula (I) or Formula (II) wherein Ar1 and Ar2 can be substituted or unsubstituted aryl diradical; Y? can be R2SO3? or ClO4?; R1 can be C1-6 alkyl; Ar1 and Ar2 are different; and, R2 can be C1-6 alkyl, substituted or unsubstituted aromatic ring, or C1-6 haloalkyl.

Abstract: A method for preparing a compound and a method for preparing a polymer employing the same are provided. The method for preparing a compound includes reacting a compound having a structure represented by Formula (I) with a compound having a structure represented by Formula (III) in the presence of a compound having a structure represented by Formula (II) to obtain a compound having a structure represented by Formula (IV) wherein Ar1 is substituted or unsubstituted aryl group; X is —O—, —S—, or —NH—; R1 is independently hydrogen or C1-6 alkyl group; R2 is hydroxyl group, C1-6 alkyl group, phenyl group, or tolyl group; and R3 is independently C1-6 alkyl group, C5-8 cycloalkyl group, or C2-6 alkoxyalkyl group.

Abstract: A method for preparing a polymer is provided. The method for preparing a polymer includes subjecting at least one monomer having a structure represented by Formula (I) to a reaction in the presence of sulfonic acid, diphenyl amine, and oxygen-containing phosphide, obtaining a sulfonium salt polymer wherein x is 0, 1, or 2; R1 is C1-6 alkyl group; and R2 is independently hydrogen, or C1-6 alkyl group. In particular, the molar ratio of the diphenyl amine to the oxygen-containing phosphide is from 4:1 to 1:1.

Abstract: A method for preparing a polymer is provided. The method for preparing a polymer includes subjecting at least one monomer having a structure represented by Formula (I) to a reaction in the presence of sulfonic acid, diphenyl amine, and oxygen-containing phosphide, obtaining a sulfonium salt polymer wherein x is 0, 1, or 2; R1 is C1-6 alkyl group; and R2 is independently hydrogen, or C1-6 alkyl group. In particular, the molar ratio of the diphenyl amine to the oxygen-containing phosphide is from 4:1 to 1:1.

Abstract: A method for preparing a polyarylene sulfide includes reacting a methyl 4-(arylthio)aryl sulfoxide compound with sulfuric acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid or trifluoromethanesulfonic acid to obtain a polysulfonium intermediate; and demethylating the polysulfonium intermediate to obtain a polyarylene sulfide, wherein the polysulfonium intermediate is demethylated with aqueous HCl, HBr, or HI.

Abstract: A method for preparing a polyarylene sulfide includes reacting a methyl 4-(arylthio)aryl sulfoxide compound with sulfuric acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid or trifluoromethanesulfonic acid to obtain a polysulfonium intermediate; and demethylating the polysulfonium intermediate to obtain a polyarylene sulfide, wherein the polysulfonium intermediate is demethylated with aqueous HCl, HBr, or HI.

Abstract: A method for preparing an aromatic sulfide or a salt thereof is provided. The method for preparing an aromatic sulfide or a salt thereof includes reacting a compound having a structure represented by Formula (I) to a compound having a structure represented by Formula (III) in the presence of a compound having a structure represented by Formula (II) to obtain a compound having a structure represented by Formula (IV) wherein R1 and R2 are independently C1-6 alkyl group, or C5-7 cycloalkyl group; R3 is independently C1-6 alkyl group, C5-7 cycloalkyl group, C1-6 haloalkyl group, or aryl group; R4 is independently H, or C1-6 alkyl group; Y is H, aryl group, or —X—R5; X is —O—, —NH—, —PH—, or —S—, or Y and an adjacent R4 are optionally combined with the carbon atoms to which they are attached, to form an aryl group; and R5 is H, C1-6 alkyl group, C5-7 cycloalkyl group, or aryl group; and Z? is R3SO3?.

Abstract: A method for preparing a cationic sulfoxide intermediate having the following formula wherein Ar1 and Ar2 are substituted or unsubstituted aryl groups that are the same or different, includes reacting hydrogen peroxide with (i) a compound having the following formula (2) or sulfonic acid R?SO3H, wherein R? is CH3, CF3, phenyl, toluene, or OH, and (ii) a cationic thioether intermediate having the following formula (4) to obtain the cationic sulfoxide intermediate: wherein R is a substituted or unsubstituted C1-C6 alkyl group; and wherein Ar1 and Ar2 are as defined above and Y is an anion.

Abstract: A polymer is provided. The polymer has a repeating unit having a structure represented by Formula (I) or Formula (II) wherein Ar1 and Ar2 can be substituted or unsubstituted aryl diradical; Y? can be R2SO3? or ClO4?; R1 can be C1-6 alkyl; Ar1 and Ar2 are different; and, R2 can be C1-6 alkyl, substituted or unsubstituted aromatic ring, or C1-6 haloalkyl.

Abstract: A method for preparing a polymer is provided. The method for preparing a polymer includes subjecting at least one monomer having a structure represented by Formula (I) to a reaction in the presence of sulfonic acid, diphenyl amine, and oxygen-containing phosphide, obtaining a sulfonium salt polymer wherein x is 0, 1, or 2, R1 is C1-6 alkyl group; and R2 is independently hydrogen, or C1-6 alkyl group.