Granted Patent B2

US 12,479,986 · App. 17/788,576 · Granted Nov 25, 2025

Inventors: Ting Huang (Shanghai, CN); Weisong Gao (Shanghai, CN); Chaodong Jiang (Shanghai, CN); Yubin Bao (Shanghai, CN); Yunbo Zhang (Shanghai, CN); Chunfa Li (Shanghai, CN)

Assignee: SABIC GLOBAL TECHNOLOGIES B.V.

C08L23/0815C08K3/26C08K2003/265C08L23/06C08L23/12C08L2205/025

Abstract

Claims (40)

1 . A polymer composition, comprising:

a polyolefin based elastomer, a polyolefin, and CaCO 3 ;

wherein a total amount of the polyolefin based elastomer, the polyolefin, and CaCO 3 is at least 95 wt % based on a total amount of the polymer composition,

wherein an amount of the polyolefin is in a range from 1.2 to 8.1 wt % based on the on a total amount of the polymer composition,

wherein the polyolefin is a polypropylene or a polyethylene,

wherein an amount of the polyolefin based elastomer is in a range from 31 to 73 wt % based on the total amount of the polymer composition,

wherein a weight ratio between CaCO 3 and a total amount of the polyolefin and the polyolefin based elastomer is in a range from 0.24 to 1.63, and

wherein a melt flow index (MFI) of the polymer composition is in a range from 3 to 68 dg/min as measured according to ISO1133-1:2011 at 190° C. with a 2.16 kg load.

2 . The polymer composition according to claim 1 , wherein the polyolefin based elastomer is at least one ethylene copolymer selected from the group consisting of ethylene-propylene copolymer, ethylene-1-butene copolymer, ethylene-1-hexene copolymer, ethylene-1-octene copolymer or a mixture thereof.

3 . The polymer composition according to claim 1 , wherein a MFI of the polyolefin based elastomer is in a range from 0.1 to 45 dg/min as measured according to ISO 1133-1:2011 at 190° C. with a 2.16 kg load.

4 . The polymer composition according to claim 1 , wherein a density of the polyolefin based elastomer is in a range from 849 to 892 kg/m 3 as measured according to ASTM D792-13.

5 . The polymer composition according to claim 1 , wherein the amount of the polyolefin is in the range from 2.1 to 8.0 wt % based on the total amount of the polymer composition.

6 . The polymer composition according to claim 1 , wherein an average particle size D50 of CaCO 3 is in a range from 0.3 to 5.6 μm as measured according to as measured according to ISO 13317-3:2001 (sedimentation analysis, Stockes' law).

7 . The polymer composition according to claim 1 , wherein an amount of CaCO 3 is in a range from 23.0 to 35.8 wt % based on the total amount of the polymer composition.

8 . The polymer composition according to claim 1 , wherein the amount of the polyolefin based elastomer is in the range from 53-73 wt % based on the total amount of the polymer composition.

9 . The polymer composition according to claim 1 , wherein the weight ratio between the CaCO 3 and the total amount of the polyolefin and the polyolefin based elastomer is in the range from 0.27 to 0.80.

10 . The polymer composition according to claim 1 , wherein a glass transition temperature of the polyolefin based elastomer is in a range from −45 to −65° C. as measured according to ISO 11357-2:2013.

11 . The polymer composition according to claim 1 , wherein the polyolefin is the polyethylene and a density of the polyethylene is in a range from 0.920 to 0.972 g/cm 3 according to ASTM D792-13.

12 . The polymer composition according to claim 1 , wherein the polyolefin is the polypropylene and an MFI of the polypropylene is in a range from 3 to 200 dg/min as measured according to ISO 1133-1:2011 at 230° C. with a 2.16 kg load.

13 . An article comprising at least 88 wt % of the polymer composition of claim 1 , based on a total amount of the article.

14 . A process for the preparation of an article comprising the following steps:

providing the polymer composition of claim 1 ; and

injecting the polymer composition into a mold to form the article.

15 . An article comprising the polymer composition of claim 1 .

16 . A polymer composition, comprising:

a polyolefin based elastomer, a polyolefin, and CaCO 3 ;

wherein an amount of the polyolefin is in a range from 1.2 to 8.1 wt % based on a total amount of the polymer composition;

wherein the polyolefin is a polypropylene or a polyethylene;

wherein an amount of the polyolefin based elastomer is in a range from 31 to 73 wt % based on a total amount of the polymer composition;

wherein a weight ratio between CaCO 3 and a total amount of the polyolefin and the polyolefin based elastomer is in a range from 0.24 to 1.63;

wherein a melt flow index (MFI) of the polymer composition is in a range from 3 to 68 dg/min as measured according to ISO1133-1:2011 at 190° C. with a 2.16 kg load; and,

wherein a glass transition temperature of the polyolefin based elastomer is in a range from −45 to −65° C. as measured according to ISO 11357-2:2013.

17 . A polymer composition, comprising:

a polyolefin based elastomer, a polyolefin, and CaCO 3 ;

wherein an amount of the polyolefin is in a range from 1.2 to 8.1 wt % based on a total amount of the polymer composition,

wherein the polyolefin is a polypropylene or a polyethylene,

wherein an amount of the polyolefin based elastomer is in a range from 31 to 73 wt % based on the total amount of the polymer composition,

wherein the polyolefin based elastomer is at least one ethylene copolymer selected from the group consisting of: ethylene-1-butene copolymer, ethylene-1-hexene copolymer, ethylene-1-octene copolymer, and mixtures thereof,

wherein a weight ratio between CaCO 3 and a total amount of the polyolefin and the polyolefin based elastomer is in a range from 0.24 to 1.63, and

wherein a melt flow index (MFI) of the polymer composition is in a range from 3 to 68 dg/min as measured according to ISO1133-1:2011 at 190° C. with a 2.16 kg load.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (19)