BUTENE-1 POLYMER COMPOSITION HAVING A HIGH MELT FLOW RATE

    公开(公告)号:US20190256747A1

    公开(公告)日:2019-08-22

    申请号:US16312512

    申请日:2017-07-03

    Abstract: A butene-1 polymer composition having MFR values of from 400 to 2000 g/10 min, measured according to ISO 1133 at 190° C. with a load of 2.16 kg, made from or containing A) a butene-1 homopolymer or a copolymer of butene-1 with a comonomer selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content of up to 5% by mole; B) a copolymer of butene-1 with a comonomer selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content of from 6% to 25% by mole; wherein the composition having a total copolymerized comonomer content from 5% to 18% by mole, referred to the sum of A) and B), and a content of fraction soluble in xylene at 0° C. of 65% by weight or more, determined on the total weight of A) and B).

    PROPYLENE BASED FILAMENT FOR 3D PRINTER
    177.
    发明申请

    公开(公告)号:US20190112732A1

    公开(公告)日:2019-04-18

    申请号:US16094647

    申请日:2017-03-20

    Abstract: The present disclosure provides a filament for use in an extrusion-based additive manufacturing system made from or containing a propylene ethylene copolymer having: ethylene derived units content ranging from about 3.0 wt % to about 12.0 wt %, based upon the weight of the propylene ethylene copolymer; MFR L (Melt Flow Rate according to ISO 1133, condition L, at 230° C. and 2.16 kg load) from about 4 to about 20 g/10 min; and xylene solubles measured at 25° C. from about 3 wt % to about 30 wt %, based upon the weight of the propylene ethylene copolymer. The disclosure further provides an extrusion-based additive manufacturing system made from or containing the filament as well as 3D printed articles prepared from the system.

    SOFT POLYOLEFIN COMPOSITION
    178.
    发明申请

    公开(公告)号:US20190112402A1

    公开(公告)日:2019-04-18

    申请号:US16087731

    申请日:2017-03-23

    Abstract: The present disclosure provides a polyolefin composition made from or containing: A) from about 60 to about 89% by weight based upon the total weight of the polyolefin composition of a copolymer of butene-1 with ethylene having a copolymerized ethylene content of up to about 18% by mole based upon the molar composition of the copolymer, and no melting peak detectable at the DSC at the second heating scan; and B) from about 11 to about 40% by weight based upon the total weight of the polyolefin composition of an ethylene polymer having density of from about 0.900 to about 0.970 g/cm3, measured according to ISO 1183 at 23° C.; wherein the amounts of A) and B) are referred to the total weight of A)+B) and the DSC second heating scan is carried out with a heating rate of 10° C. per minute. The composition is useful for preparing gaskets.

    Soft and flexible polyolefin composition

    公开(公告)号:US10214640B2

    公开(公告)日:2019-02-26

    申请号:US15536052

    申请日:2015-11-17

    Abstract: The present disclosure provides a polyolefin composition made from or containing: A) from about 63 to about 78% by weight of a copolymer of butene-1 with ethylene having a copolymerized ethylene content of up to about 18% by mole and no melting peak detectable at the DSC at the second heating scan; B) from about 22 to about 37% by weight of (i) a propylene homopolymer, or (ii) a propylene copolymer, or (iii) a mixture of two or more of (i) and (ii), having a melting temperature Tm, measured by DSC at the second heating scan, of from about 130° C. to about 165° C.; wherein (i) the amounts of A) and B) are referred to the total weight of A)+B) and (ii) having a melting enthalpy ΔHfus, measured by DSC at the second heating scan, of from 7 to 30 J/g.

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