Polycarbonate Compositions Having Improved Impact Properties

    公开(公告)号:US20240317995A1

    公开(公告)日:2024-09-26

    申请号:US18576420

    申请日:2022-07-07

    Abstract: Thermoplastic compositions include: (a) from 10 wt % to 95 wt % of a polycarbonate component: (b) from 0.1 wt % to 50 wt % of a reinforcing filler: (c) from 0.1 wt % to 10 wt % of an impact modifier component having a linear polymer structure; and from 0.1 wt % to 10 wt % of a hydrocarbon additive. A weight percent ratio of the hydrocarbon additive to the impact modifier in the composition is 1:1 or lower. The hydrocarbon additive may include saturated carboxylic and acyclic structures. In particular aspects the impact modifier component has a linear, non-polarized polymer structure, and the composition has improved Izod impact properties and/or gloss properties as compared to a reference composition that includes a polarized impact modifier instead of the impact modifier component.

    POLY(PHENYLENE ETHER) COMPOSITION AND ARTICLE

    公开(公告)号:US20240294751A1

    公开(公告)日:2024-09-05

    申请号:US18691334

    申请日:2022-08-31

    CPC classification number: C08L71/123 C08K5/523 C08L2201/02 C08L2205/03

    Abstract: A desirable balance of heat resistance and flame retardancy is exhibited by a composition that includes specific amounts of a poly(phenylene ether), a poly(phenylene ether)-polysiloxane block copolymer reaction product, a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, and an organophosphate flame retardant. The composition minimizes or excludes reinforcing fillers, certain adhesion promoters, and addition polymers that include repeat units derived from a glycidyl ester of an α,β-ethylenically unsaturated acid.

    Sustainable Copolyester Elastomer Compositions with Improved Color Capability

    公开(公告)号:US20240254310A1

    公开(公告)日:2024-08-01

    申请号:US18576403

    申请日:2022-06-28

    Abstract: Thermoplastic compositions include: a copolyester elastomer including a polybutylene terephthalate (PBT) moiety and an elastomer moiety: and from greater than 0.1 wt % to 9 wt % of at least one brightening agent. The copolyester elastomer is formed according to a process including (1) forming the PBT moiety from a high purity terephthalic moiety: and (2) polymerizing the PBT moiety with the elastomer moiety to form the copolyester elastomer, wherein the high purity terephthalic moiety is derived from post-consumer, pre-consumer or post-industrial recycled (PCR) polyethylene terephthalate (PET). The PBT moiety includes PBT derived from post-consumer, pre-consumer or post-industrial recycled (PCR) polyethylene terephthalate (PET), the high purity terephthalic moiety has a purity of at least about 95%, and the thermoplastic composition has an L* color value of at least 80 as determined according to a CIELab color space standard. Methods for forming the copolymer elastomer and compositions including it are also described.

    SELECTIVELY PERMEABLE MEMBRANE OBTAINED BY CARBONIZATION SULFONATED POLY(PHENYLENE ETHER) COPOLYMER

    公开(公告)号:US20240216874A1

    公开(公告)日:2024-07-04

    申请号:US18287577

    申请日:2021-12-21

    Abstract: A selectively permeable membrane for separating carbon dioxide from methane in a gaseous stream, the membrane comprising a carbonization product of a sulfonated poly(phenylene ether) copolymer, wherein the membrane has: a carbon dioxide permeability of at least 60×10−6 cm3 (STP)/cm2·s cm Hg; a selectivity for carbon dioxide to methane of greater than 40, as measured at 50° C. and 791 kPa; a methane slip of less than 0.6 vol %, based on total volume of methane input; a carbon dioxide recovery of greater than 75%; and a power consumption to produce a purified gaseous stream that is equivalent to less than 90 kJ/kg of natural gas in the purified gaseous stream, preferably, wherein the membrane further has a carbon footprint that is less than 75% of a carbon footprint of a comparable membrane that does not comprise the carbonization product of the sulfonated poly(phenylene ether) copolymer.

    THERMOPLASTIC COMPOSITIONS
    98.
    发明公开

    公开(公告)号:US20240166865A1

    公开(公告)日:2024-05-23

    申请号:US18281048

    申请日:2022-03-09

    Abstract: A thermoplastic composition comprising: 45-90 wt % of a polycarbonate; 5-15 wt % of a brominated polycarbonate; a polycarbonate-siloxane copolymer in an amount effective to provide 0.2-2 wt % siloxane based on the total weight of the thermoplastic composition; 2-10 wt % of a silicone-containing impact modifier comprising a core-shell impact modifier; 0.1-1 wt % of a flame retardant comprising an alkyl sulfonate salt, aromatic sulfone sulfonate, an aromatic sulfonate salt, or a combination thereof; optionally, 0.5-10 wt % titanium dioxide; optionally, 0.1-1 wt % carbon black, wherein the wt % of each component is based on the total weight of the composition, which totals 100 wt %.

    Electrically Conductive Compositions for Battery Electrode Plates

    公开(公告)号:US20240158604A1

    公开(公告)日:2024-05-16

    申请号:US18281605

    申请日:2022-03-16

    CPC classification number: C08K3/04 C08K2201/001 C08K2201/006 C08K2201/014

    Abstract: Aspects of the disclosure relate to a composition including: from about 35 wt % to about 70 wt % of at least one polyethylene polymer; from about 25 wt % to about 55 wt % of at least one graphite filler; and from about 2 wt % to about 15 wt % of a carbon powder filler having a BET surface area of at least 50 square meters per gram (m2/g). The polyethylene polymer has a density of at least 0.94 gram per cubic centimeter (g/cm3), a melt flow rate (MFR) of at least 10 g per 10 minutes (g/10 min) measured at 190° C. and 21.6 kilogram (kg), and an Environmental Stress-Cracking Resistance (ESCR) of at least 500 hours. The composition has a volume electrical resistivity of less than 5 ohm·centimeter (ohm·cm) and a MFR of at least 4 g/10 min measured at 280° C. and 21.6 kg.

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