US 12,291,597 B2
Polybutylene terephthalate composition and article thereof
Chao Liu, Shanghai (CN); Qiong Jie Han, Shanghai (CN); Roland Helmut Kraemer, Lemfoerde (DE); and Zhen Ke Wei, Shanghai (CN)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/766,627
Filed by BASF SE, Ludwigshafen (DE)
PCT Filed Oct. 13, 2020, PCT No. PCT/EP2020/078802
§ 371(c)(1), (2) Date Apr. 5, 2022,
PCT Pub. No. WO2021/074165, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. PCT/CN2019/111503 (WO), filed on Oct. 16, 2019.
Prior Publication US 2024/0076444 A1, Mar. 7, 2024
Int. Cl. C08L 25/10 (2006.01); C08G 63/183 (2006.01); C08K 7/14 (2006.01); C08K 7/28 (2006.01); C08L 25/14 (2006.01); C08L 55/02 (2006.01); C08L 67/02 (2006.01)
CPC C08G 63/183 (2013.01) [C08K 7/14 (2013.01); C08K 7/28 (2013.01); C08L 25/10 (2013.01); C08L 25/14 (2013.01); C08L 55/02 (2013.01); C08L 67/02 (2013.01); C08L 2203/20 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2207/53 (2013.01)] 21 Claims
 
1. A polybutylene terephthalate composition, comprising as component (A) at least one polybutylene terephthalate resin, as component (B) at least one vinyl aromatic-based polymer comprising units which are derived from vinyl aromatic monomers, and as component (C) at least one reinforcement agent,
wherein the vinyl aromatic-based polymer is vinyl aromatic-based polymer (B-1) and/or (B-2);
wherein the vinyl aromatic-based polymer (B-1) comprises units derived from at least one vinyl aromatic monomer (b1), based on the total monomers which constitutes the vinyl aromatic-based polymer (B-1); and optionally units derived from at least one ethylenically unsaturated monomer (b2) and/or one conjugated diene monomer (b3);
wherein the vinyl aromatic monomers (b1) in the vinyl aromatic-based polymer (B-1) are present in an amount of from 60 mol % to 99.5 mol %, based on the total monomers which constitutes the vinyl aromatic-based polymer (B-1);
wherein the vinyl aromatic-based polymer (B-2) is a core-shell polymer comprising a core and a shell, the core is derived from a first monomer comprising at least one vinyl aromatic monomer (b1), and optionally at least one selected from the group consisting of ethylenically unsaturated monomer (b2) and conjugated diene monomer (b3); the shell is derived from a second monomer comprising at least one monomer selected from the group consisting of vinyl aromatic monomer (b1) and ethylenically unsaturated monomer (b2);
and wherein the weight ratio of the core to the shell in the core-shell polymer is 90:10 to 10:90, and
where in the vinyl aromatic-based polymer (B-2), the core comprises from 5 wt % to 80 wt % of units derived from at least one vinyl aromatic monomer (b1) and from 20 wt % to 95wt % of units derived from at least one conjugated diene monomer (b3), based on the total units of the core.