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, a fourth repeating unit, and a fifth 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), the fourth repeating unit has a structure of Formula (IV), and the fifth repeating unit has a structure of Formula (V), a structure of Formula (VI), or a structure of Formula (VII) wherein A1, A2, A3, A4, X1, Z1, R1, R2, R3 and Q are as defined in the specification.

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: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for switching a secondary cell to a primary cell. A user equipment (UE) monitors a first radio condition of the UE for beams of a primary cell and a second radio condition for beams of one or more secondary cells configured for the UE in carrier aggregation. The UE transmits a request to configure a candidate beam of at least one candidate secondary cell as a new primary cell in response to the first radio condition not satisfying a first threshold and the second radio condition for the at least one candidate secondary cell satisfying a second threshold. A base station determines to reconfigure at least one secondary cell as the new primary cell. The base station and the UE perform a handover of the UE to the new primary cell.

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 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: A polymer includes a repeating unit M and a repeating unit D, the repeating unit M is —COC6H6CONHCH2CH2O—, the repeating unit D is —COC6H6COOCH2CH2O—, and a molar ratio of the repeating unit M to the repeating unit D is 1:6 to 1:999.

Abstract: A biodegradable polyester and a method for preparing a biodegradable polyester are provided. The biodegradable polyester is a product of a reactant (A) and a reactant (B) via polycondensation. The reactant (A) is a product of a reactant (C) and a reactant (D) via an esterification reaction. The reactant (B) is at least one epoxy resin with a secondary hydroxyl functional group. The reactant (C) is at least one diol, and the reactant (D) is at least one dicarboxylic acid, at least one acid anhydride, or a combination thereof.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

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 polyester elastomer is provided, which includes a product of reacting (a) amide oligomer, (b) polyalkylene glycol, and (c) poly(alkylene arylate). (a) Amide oligomer has a chemical structure of or a combination thereof, wherein R1 is C4-8 alkylene group, R2 is C4-8 alkylene group, and each of x is independently an integer of 10 to 20. (b) Polyalkylene glycol has a chemical structure of wherein R3 is C2-10 alkylene group, and y is an integer of 20 to 30. (c) Poly(alkylene arylate) has a chemical structure of or a combination thereof, wherein Ar is R4 is C2-6 alkylene group, and z is an integer of 1 to 10.

Abstract: A thin film is provided, which includes a polymer formed by reacting (a) p-hydroxybenzoic acid, (b) 6-hydroxy 2-naphthoic acid and (c) branched-monomer. (c) branched-monomer is or a combination thereof, wherein R is aryl group, heteroaryl group, or cycloalkyl group, and each of R1 is independently —OH, —NH2, or —COOH. The molar ratio of (a) p-hydroxybenzoic acid over (b) 6-hydroxy 2-naphthoic acid is between 50:50 and 90:10. The molar ratio of (c) branched-monomer over the sum of (a) p-hydroxybenzoic acid and (b) 6-hydroxy 2-naphthoic acid is between 0.25:100 and 0.5:100. The polymer has an intrinsic viscosity of 4 dL/g to 6 dL/g.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

Abstract: A thin film is provided, which includes a polymer formed by reacting (a) p-hydroxybenzoic acid, (b) 6-hydroxy 2-naphthoic acid and (c) branched-monomer. (c) branched-monomer is or a combination thereof, wherein R is aryl group, heteroaryl group, or cycloalkyl group, and each of R1 is independently —OH, —NH2, or —COOH. The molar ratio of (a) p-hydroxybenzoic acid over (b) 6-hydroxy 2-naphthoic acid is between 50:50 and 90:10. The molar ratio of (c) branched-monomer over the sum of (a) p-hydroxybenzoic acid and (b) 6-hydroxy 2-naphthoic acid is between 0.25:100 and 0.5:100. The polymer has an intrinsic viscosity of 4dL/g to 6dL/g.

Abstract: A polyester elastomer is provided, which includes a product of reacting (a) amide oligomer, (b) polyalkylene glycol, and (c) poly(alkylene arylate). (a) Amide oligomer has a chemical structure of or a combination thereof, wherein R1 is C4-8 alkylene group, R2 is C4-8 alkylene group, and each of x is independently an integer of 10 to 20. (b) Polyalkylene glycol has a chemical structure of wherein R3 is C2-10 alkylene group, and y is an integer of 20 to 30. (c) Poly(alkylene arylate) has a chemical structure of or a combination thereof, wherein Ar is R4 is C2-6 alkylene group, and z is an integer of 1 to 10.

Abstract: Disclosed is a thermoplastic polyester elastomer, which is formed by reacting 100 parts by weight of polyester and 0.01 to 2 parts by weight of an epoxy resin with two epoxy groups, wherein the polyester is formed by reacting a parts by mole of a hard-segment diol, b parts by mole of a soft-segment diol, and 1 part by mole of a diacid, wherein 1?a?3 and 0.005?b?1.5.

Abstract: Disclosed is a thermoplastic polyester elastomer, which is formed by reacting 100 parts by weight of ester and 0.01 to 2 parts by weight of an epoxy resin with two epoxy groups, wherein the ester is formed by reacting a parts by mole of a hard-segment diol, b parts by mole of a soft-segment diol, and 1 part by mole of a diacid, wherein 1?a?3 and 0.005?b?1.5.

Abstract: The disclosure provides a catalyst composition, including: a metal or metal compound; and an organic diacid metal salt. The metal includes titanium (Ti), stibium (Sb) or combinations thereof and the metal compound includes antimony oxide (Sb2O3) or tetra-n-butoxy titanium (TBT). The catalyst composition includes about 0.3-6 wt % of the metal or metal compound and about 94-99.7 wt % of the organic diacid metal salt.