US 12,338,344 B2
Polymer composition with a high heat deflection temperature
Dimphna Johanna Maria van Beek, Sittard (NL); Christelle Marie Hélène Grein, Aachen (DE); Rob Donners, Brunssum (NL); Gerard Jan Eduard Biemond, Brunssum (NL); and Zahra Fahimi, Maastricht (NL)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 17/785,770
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
PCT Filed Dec. 18, 2020, PCT No. PCT/EP2020/087082
§ 371(c)(1), (2) Date Jun. 15, 2022,
PCT Pub. No. WO2021/130122, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 19219578 (EP), filed on Dec. 24, 2019.
Prior Publication US 2023/0059380 A1, Feb. 23, 2023
Int. Cl. C08L 23/14 (2006.01); C08L 23/12 (2006.01)
CPC C08L 23/12 (2013.01) [C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2207/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A polymer composition comprising a first heterophasic propylene copolymer (a), a second heterophasic propylene copolymer (b) and optionally an inorganic filler, wherein the amount of the first heterophasic propylene copolymer (a) is in the range from 5.3 to 63.7 wt % based on the total amount of the polymer composition, wherein the amount of the second heterophasic propylene copolymer (b) is in the range from 4.7 to 64.5 wt % based on the total amount of the polymer composition,
wherein the xylene soluble part of first heterophasic propylene copolymer (a) is in the range from 10 to 27 wt % as determined by ISO16152: 2005 based on the total amount of the first heterophasic propylene copolymer (a), wherein the ratio between the intrinsic viscosity of the xylene soluble part of first heterophasic propylene copolymer (a) and of the xylene insoluble part of first heterophasic propylene copolymer (a) is in the range from 3.1 to 7.2, wherein the intrinsic viscosity of the xylene soluble part and of the xylene-insoluble part are measured according to ISO1628-1:2009 and ISO1628-3:2010 respectively in decalin at 135° C.; wherein the MFI of the first heterophasic propylene copolymer (a) is in the range from 40 to 120 dg/min as determined according to ISO1133-1:2011 at 230° C. with a 2.16 kg load;
wherein the xylene soluble part of the second heterophasic propylene copolymer (b) is in the range from 12 to 27 wt % as determined by ISO16152: 2005 based on the total amount of the second heterophasic propylene copolymer (b), where in the intrinsic viscosity of the xylene soluble part of the second heterophasic propylene copolymer (b) is in the range from 2.9 to 4.6 dl/g as measure according to ISO1628-1:2009 in decalin at 135° C.; wherein the MFI of the second heterophasic propylene copolymer (b) is in the range from 5.6 to 65 dg/min as determined according to ISO1133-1:2011 at 230° C. with 2.16 kg load,
wherein the MFI of the polymer composition is in the range from 5 to 100 dg/min as determined according to ISO1133-1:2011 at 230° C. with 2.16 kg load.