POLYIMIDE PRECURSOR RESIN COMPOSITION
    122.
    发明申请

    公开(公告)号:US20190352463A1

    公开(公告)日:2019-11-21

    申请号:US16407647

    申请日:2019-05-09

    IPC分类号: C08G73/10 C08L79/08 C08J5/18

    摘要: A solvent for a resin composition that includes a polyimide precursor having a structure unit derived from polyamic acid and a structure unit derived from siloxane having a monovalent aliphatic hydrocarbon group of 1 to 5 carbon atoms or a monovalent aromatic group of 6 to 10 carbon atoms. The solvent is a mixture of an amide-based solvent and a non-amide-based solvent having a boiling point of 160° C. or higher, and the resin composition includes cyclic siloxane.

    HIGH FLOW POLYETHERIMIDE COMPOSITIONS, AND ARTICLES MADE THEREFROM

    公开(公告)号:US20190338124A1

    公开(公告)日:2019-11-07

    申请号:US16470706

    申请日:2018-01-12

    发明人: SIJUN LI LIANG SHEN

    IPC分类号: C08L79/08 C08J5/04

    摘要: A reinforced polyetherimide composition includes 50 to 99.9 weight percent of a polymer composition comprising a polyetherimide having a weight average molecular weight of 5,000 to 80,000 Daltons; 10 to 40 weight percent of a reinforcing filler; 0.1 to 10 weight percent of flow promoter, wherein the flow promoter comprises an aromatic phosphate, a phosphazene, or a combination comprising at least one of the foregoing; 0 to 20 weight percent of a liquid crystalline polymer; wherein weight percent is based on the total weight of the reinforced polyetherimide composition; and wherein the composition has a melt flow rate (MFR) that is at least 10% higher than that of the same reinforced polyetherimide composition without the flow promoter, and a capillary melt viscosity that is at least 10% lower than that of the same reinforced polyetherimide composition without the flow promoter.

    LINEAR AND BRANCHED POLYIMIDE COMPOSITION
    124.
    发明申请

    公开(公告)号:US20190315963A1

    公开(公告)日:2019-10-17

    申请号:US16472143

    申请日:2017-12-29

    IPC分类号: C08L79/08

    摘要: A polyimide composition includes 1 to 99 weight percent, preferably 70 to 99 weight percent, more preferably 75 to 95 weight percent of a first polyimide; and 1 to 99 weight percent, preferably 1 to 30 weight percent, more preferably 2 to 25 weight percent of a second polyimide, wherein the first polyimide and the second polyimide are different, and wherein the polyimide composition has a melt flow rate that is greater than a melt flow rate of the first polyimide and less than a melt flow rate of the second polyimide; an apparent viscosity that is less than an apparent viscosity of the first polyimide and less than an apparent viscosity of the second polyimide; and a notched Izod impact strength that is greater than a notched Izod impact strength of the first polyimide and greater than a notched Izod impact strength of the second polyimide.

    TELECHELIC POLY(IMIDE) OLIGOMERS, METHODS OF MANUFACTURE, AND USES THEREOF

    公开(公告)号:US20190256658A1

    公开(公告)日:2019-08-22

    申请号:US16347105

    申请日:2017-11-16

    摘要: A ureido-pyrimidinone oligomer having the formula (I) wherein each Z′ is independently the same or different, and is a substituted or unsubstituted straight or branched chain C1-10 alkyl, each R1 is independently the same or different, and is a substituted or unsubstituted straight or branched chain C1-20 alkylene, substituted or unsubstituted C2-20 alkenylene, substituted or unsubstituted C3-8 cycloalkylene, or substituted or unsubstituted C6-18 arylene, each V is independently the same or different, and is a substituted or unsubstituted tetravalent C4-40 hydrocarbon group, each R is independently the same or different, and is a substituted or unsubstituted C1-24 divalent hydrocarbon group; and n has an average value of 2 to 50, preferably 3 to 40, more preferably 5 to 30.