STYRENIC COPOLYMER COMPOSITION WITH PMMA AND IMPROVED WEATHERING RESISTANCE

    公开(公告)号:US20240301191A1

    公开(公告)日:2024-09-12

    申请号:US17768134

    申请日:2020-10-13

    Abstract: The invention relates to a thermoplastic molding composition (P) comprising: (A) thermoplastic polymer composition (A) comprising: (A-1) 10 to 50 wt.-% of graft copolymer (A-1), (A-2) 1 to 50 wt.-%, of thermoplastic polymer matrix (A-2) based on one or more vinylaromatic copolymers, (A-3) 20 to 50 wt.-%, of polymerized alkyl methacrylate component (A-3), and (A-4) 0 to 45 wt.-% of comonomer which is copolymerized with the at least one polymerized alkyl methacrylate component (A-3), where the sum of (A-1), (A-2), (A-3) and optional comonomers (A-4) is 83.2 to 99.8 wt.-%; (B) a hindered amine light stabilizer composition (B), comprising at least two of substances (B-1) to (B-3): (B-1) 0 to 0.9 wt.-%, of at least one hindered amine light stabilizer having a dipiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the dipiperidine structure (B-2) 0 to 0.9 wt.-%, of a hindered amine light stabilizer mixture having a monopiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the monopiperidine structure, and (B-3) 0 to 2 wt.-%, of at least one hindered amine light stabilizer having a polymeric structure comprising piperidine groups with at least one alkyl group at each of the 2 and 6 positions of the piperidine groups (C) 0 to 5 wt.-%, of one or more further additives (C), different from (B); and (D) 0 to 10 wt.-%, of colorants, dyes and/or pigments (D), different from (C); wherein the constituents (A) to (D) sum up to 100 wt.-% of the molding composition (P).

    STYRENE COPOLYMER MOLDING COMPOSITIONS WITH REDUCED MOLD DEPOSIT FORMATION FOR HIGH GLOSS APPLICATIONS

    公开(公告)号:US20240093018A1

    公开(公告)日:2024-03-21

    申请号:US17766877

    申请日:2020-10-13

    Abstract: The invention relates to a thermoplastic molding composition (P) comprising: (A) 81.1 to 99.7 wt. -% of at thermoplastic polymer composition (A) comprising: (A-1) graft copolymer (A-1), and (A-2) thermoplastic matrix (A-2) based on vinylaromatic copolymers; (B) at least one hindered amine light stabilizing composition (B) comprising: (B-1) 0.2 to 0.9 wt.-%, of at least one hindered amine light stabilizer having a dipiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the dipiperidine structure and (B-2) 0.1 to 0.9 wt.-%, of a hindered amine light stabilizer mixture having a monopiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the monopiperidine structure and (B-3) 0 to 2 wt.-%, of at least one hindered amine light stabilizer having a polymeric structure comprising piperidine groups with at least one alkyl group at each of the 2 and 6 positions of the piperidine groups, (C) 0 to 10 wt.-%, of colorants, dyes and/or pigments (C); and (D) 0 to 5 wt.-%, of further additives (D) different from (B) and (C); provided that the thermoplastic molding composition (P) further comprises 0.001 wt.-% to 0.1 wt.-%, based on the total weight of the molding composition (P), of oligomers and/or polymers comprising ethylene and/or propylene repeating units or provided that the thermoplastic molding composition (P) further comprises 0 wt.-%, based on the total weight of the molding composition (P), of oligomers and/or polymers comprising ethylene and/or propylene repeating units (as component E), wherein the constituents (A) to (E) sum up to 100 wt.-% of the molding composition (P).

    BLACK STYRENE COPOLYMER COMPOSITIONS FOR HIGH GLOSS EXTERIOR APPLICATIONS

    公开(公告)号:US20240117171A1

    公开(公告)日:2024-04-11

    申请号:US17769005

    申请日:2020-10-13

    CPC classification number: C08L25/12 C08K3/04 C08K5/3435 C08L51/06

    Abstract: The invention relates to a molding composition (P) comprising: (A) 83.2 to 98.5 wt.-% of a thermoplastic polymer composition (A) comprising: (A-1) at least one graft copolymer (A-1), and (A-2) at least one thermoplastic matrix polymer (A-2) based on one or more vinylaromatic copolymers; (B) 1.5 to 3 wt.-% of carbon black (B) or a mixture of carbon blacks (B); (C) a hindered amine light stabilizer composition (C), comprising at least two of substances (C-1) to (C-3): (C-1) 0 to 0.9 wt.-%, based on the total weight of the molding composition (P), of at least one hindered amine light stabilizer having a dipiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the dipiperidine structure, (C-2) 0 to 0.9 wt.-% of a hindered amine light stabilizer mixture having a monopiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the monopiperidine structure and (C-3) 0 to 2 wt.-%, of at least one hindered amine light stabilizer having a polymeric structure comprising piperidine groups with at least one alkyl group at each of the 2 and 6 positions of the piperidine groups provided that the at least one hindered amine light stabilizer composition (C) is present in the molding composition (P) in an amount of at least 0.2 wt.-%; (D) 0 to 5 wt.-%, of one or more further additives (D), different from (B) and (C); and (E) 0 to 5 wt.-%, of one or more further colorants, dyes or pigments (E), different from (B) and (D); wherein the constituents (A) to (E) sum up to 100 wt.-% of the molding composition (P).

    WEATHERING-RESISTANT STYRENE COPOLYMER MOLDING COMPOSITIONS WITH REDUCED MOLD DEPOSIT FORMATION FOR HIGH GLOSS APPLICATIONS

    公开(公告)号:US20240026146A1

    公开(公告)日:2024-01-25

    申请号:US17768045

    申请日:2020-10-13

    Abstract: The invention relates to a molding composition (P) comprising: (A) 81.7 to 99.4 wt.-% of at least one thermoplastic polymer composition (A); (B) at least one hindered amine light stabilizing composition (B) comprising: (B-1) 0.1 to 0.9 wt.-% of a hindered amine light stabilizer mixture having a monopiperidine structure, (B-2) 0 to 0.4 wt.-% of at least one hindered amine light stabilizer having a dipiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the dipiperidine structure and (B-3) 0.5 to 2 wt. -% of at least one hindered amine light stabilizer having a polymeric structure comprising piperidine groups (C) 0 to 10 wt.-% of one or more colorants, dyes and/or pigments (C); and (D) 0 to 5 wt.-%, based on the total weight of the molding composition (P), of one or more further additives (D); wherein constituents (A) to (D) sum up to 100 wt.-% of molding composition (P).

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