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    UHMWPE FIBER, YARN AND ARTICLES THEREOF
    192.
    发明申请
    UHMWPE FIBER, YARN AND ARTICLES THEREOF 审中-公开

    公开(公告)号：US20200024773A1

    公开(公告)日：2020-01-23

    申请号：US16335821

    申请日：2017-09-25

    Applicant: DSM IP ASSETS B.V.

    Inventor： Martin Pieter VLASBLOM ,  Johannes Gabriël Marie DRIEMAN ,  Pieter GIJSMAN

    IPC: D01F6/04 ,  D01D1/02 ,  D01D5/06 ,  D01F1/04 ,  C08L23/06 ,  C08K3/04

    Abstract: The invention relates to a gel-spun fiber comprising an ultra-high molecular weight polyethylene (UHMWPE), wherein the UHMWPE has an intrinsic viscosity (IV) of at least 4 dL/g and comprises at least 0.3 short chain branches per thousand total carbon atoms (SCB/1000TC), characterized in that the fiber further comprises between 0.1 and 10 parts by weight of carbon black based on 100 parts by weight of the amount of the polyethylene forming the fiber. The invention further relates to a yarn comprising at least 5 such gel-spun fibers as well as to articles comprising said fibers or yarns.

    TRANSPARENT DRAWN ARTICLE
    194.
    发明申请
    TRANSPARENT DRAWN ARTICLE 审中-公开

    公开(公告)号：US20200023567A1

    公开(公告)日：2020-01-23

    申请号：US16336221

    申请日：2017-09-27

    Applicant: DSM IP ASSETS B.V.

    Inventor： Cornelis Wilhelmus Maria BASTIAANSEN ,  John Richard SEVERN ,  Lihua SHEN

    IPC: B29C55/00

    Abstract: The invention relates to a process for the production of a high strength transparent high density polyethylene article comprising the steps of (i) heating a high density polyethylene (HDPE) to a temperature above the melting temperature (Tm) of the HDPE; (ii) molding the heated HDPE obtained in step (i) to form a hot molded HDPE article; (iii) cooling the hot molded HDPE article to a temperature below Tm to form a melt-crystallized HDPE article; (iv) stretching the melt-crystallized HDPE article to a total draw ratio of at least 5 comprising at least one stretching step of the article at a temperature T1 below the melting temperature Tm to a draw ratio (DR1) of at least 2 to form an oriented HDPE article, wherein the HDPE has a melt flow index (MFI) measured at 21.6 kg and 190° C. according to ASTM D1238 of at most 1.5 g/I Omin, an isotropic density measured according to ISO 1 183-1 A of at most 0.955 g/cm3 and a Tm measured according to ISO 1 1357-3 of greater than 130° C. The invention also relates to high strength transparent HDPE articles and products comprising the high strength transparent HDPE article such as ballistic resistant articles, visors, car parts, train parts, plane parts, windshields, windows and radomes.

    Fibers comprising polyesteramide copolymers for drug delivery
    195.
    发明授权
    Fibers comprising polyesteramide copolymers for drug delivery 有权

    公开(公告)号：US10538864B2

    公开(公告)日：2020-01-21

    申请号：US14432349

    申请日：2013-10-24

    Applicant: DSM IP ASSETS B.V.

    Inventor： Mirian Hendrika Jacoba Gillissen-Van Der Vight ,  Jens Christoph Thies ,  George Mihov

    IPC: D01F6/82 ,  A61K47/34 ,  A61K9/00 ,  C08G69/44 ,  A61K9/70

    Abstract: The present inventioN relates to fibers comprising a polyesteramide (PEA) having a chemical formula described by structural formula (IV), wherein −m+p varies from 0.9-0.1 and q varies from 0.1 to 0.9, −m+p+q=1 whereby m or p could be 0, −n is about 5 to about 300; (pref. 50-200), —R1 is independently selected from the group consisting of (C2-C20) alkylene or (C2-C20) alkenylene and combinations thereof; —R3 and R4 in a single backbone unit m or p, respectively, are independently selected from the group consisting of hydrogen, (C1-C6)alkyl, (C2-C6)alkenyl, (C2-C6)alkynyl, (C6-C10)aryl, —(CH2)SH, —(CH2)2S(CH3), —CH2OH, —CH(OH)CH3, —(CH2)4NH3+, —(CH2)3NHC(═NH2+)NH2, —CH2COOH, —(CH2)COOH, —CH2—CO—NH2, —CH2CH2—CO—NH2, —CH2CH2COOH, CH3—CH2—CH(CH3)—, (CH3)2—CH—CH2—, H2N—(CH2)4—, Ph-CH2—, CH═C—CH2—, HO-p-Ph-CH2—, (CH3)2—CH—, Ph-NH—, NH—(CH2)3—C—, NH—CH═N—CH═C—CH2—. —R5 is selected from the group consisting of (C2-C20)alkylene, (C2-C20)alkenylene, alkyloxy or oligoethyleneglycol, —R6 is selected from bicyclic-fragments of 1,4:3,6-dianhydrohexitols of structural formula (III); —R7 is selected from the group consisting of (C6-C10)aryl (C1C6)alkyl, —R8 is —(CH2)4-; whereby a is at least 0.05 and b is at least 0.05 and a+b=1.

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