METHOD OF PRODUCING STYRENE MONOMERS BY DEPOLYMERIZATION OF A STYRENE-COPOLYMER-CONTAINING POLYMER MASS

    公开(公告)号:US20240101781A1

    公开(公告)日:2024-03-28

    申请号:US17769010

    申请日:2020-10-13

    CPC classification number: C08J11/12 C08F212/08 C08F2800/20

    Abstract: The invention relates to a method of producing styrene monomers by depolymerization (breakdown) of a styrene-copolymer-containing polymer mass, a device for carrying out the method, the use of a styrene copolymer for producing styrene monomers by thermal depolymerization and the use of a styrene copolymer as an additive in the thermal depolymerization of polystyrene. The polymer mass contains I) 10 to 100 wt %, relative to the total weight of the polymer mass (A), of a styrene copolymer (I), comprising: Ia) 10 to 99 wt %, relative to the styrene copolymer (I), of repeating units (Ia) that originate from styrene; and Ib) 1 to 90 wt %, relative to the styrene copolymer (I), of repeating units (Ib) that originate from a monomer the homopolymers of which have a ceiling temperature of below 350° C.; and II) optionally 0 to 90 wt % polystyrene (II).

    ULTRA-HIGH FLOW ACRYLONITRILE BUTADIENE STYRENE COPOLYMER COMPOSITIONS

    公开(公告)号:US20210108062A1

    公开(公告)日:2021-04-15

    申请号:US17047419

    申请日:2019-04-12

    Abstract: ABS molding composition comprising: (a) 50 to 80 wt.-% SAN copolymer (a) (S/AN ratio 78:22 to 65:35, Mw 80,000 to 250,000); (b) 8 to 25 wt.-% graft copolymer (b) consisting of 15 to 60 wt.-% graft sheath (b2) and 40 to 85 wt.-% graft substrate—an agglomerated butadiene rubber latex—(b1), obtained by emulsion polymerization of SAN in presence of agglomerated butadiene rubber latex (b1) (D50 150 to 800 nm); and (c) 8 to 30 wt.-% SBC block copolymer (vinylarene 58 to 68 wt.-%) comprising diene/vinylarene tapered polymer blocks; exhibiting ultra-high flow melt with good mechanical properties, a process for their preparation and their use for the production of bulky and/or thin walled articles.

    POLYMER COMPOSITIONS BASED ON SMMA
    18.
    发明申请
    POLYMER COMPOSITIONS BASED ON SMMA 有权
    基于SMMA的聚合物组合物

    公开(公告)号:US20160289438A1

    公开(公告)日:2016-10-06

    申请号:US15035859

    申请日:2014-11-10

    Abstract: The invention is directed to polymer compositions comprising components (a), (b), (c) and (d): (a) 80 to 97% by weight of component (a) comprising a copolymer (a1) of styrene (a11) and methyl methacrylate (a12), wherein the amount present of (a11) is from 70 to 90% by weight and the amount present of (a12) is from 10 to 30% by weight, based in each case on (a1), (b) 3 to 20% by weight of polyphenylene ether as component (b); (c) 0 to 2% by weight of polystyrene as component (c); (d) 0 to 17%, in particular 0 to 15% by weight of conventional additives as component (d), having improved heat resistance, surface hardness, depth of color and gloss.

    Abstract translation: 本发明涉及包含组分(a),(b),(c)和(d))的聚合物组合物:(a)80至97重量%的包含苯乙烯(a11)的共聚物(a1) 和甲基丙烯酸甲酯(a12),其中(a11)的存在量为70〜90重量%,(a 12)的存在量为10〜30重量%,基于(a1),(a1) b)作为组分(b)的3-20重量%的聚苯醚; (c)作为组分(c)的聚苯乙烯为0至2重量%; (d)具有改善的耐热性,表面硬度,颜色深度和光泽度的0至17%,特别是0至15重量%的作为组分(d)的常规添加剂。

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