Polymer composition for improved grade plastics from recycled material
A polymer composition including: a. 75-90 wt % of a recycled polypropylene; b. 1-20 wt % of a polyolefin elastomer (POE); c. 0-10 wt % of a styrene ethylene butylene styrene block copolymer (SEBS); d. 2-20 wt % of talcum; wherein the amount of POE and SEBS is at least 3.5 wt %, preferably between 5 and 20 wt %, and wherein the wt % is relative to the total weight of the polymer composition.
1. A polymer composition comprising:
75-90 wt % of a recycled polypropylene;
1-20 wt % of a polyolefin elastomer (POE);
0-10 wt % of a styrene-ethylene-butylene-styrene block copolymer (SEBS);
2-20 wt % of talcum;
wherein the amount of POE and SEBS is at least 3.5 wt %, and
wherein the wt % is relative to the total weight of the polymer composition,
wherein the recycled PP is a material collected under the DSD 324 or DSD 324-1 standard, and wherein the polymer composition has a modulus ranging between 800-1400 MPa determined using ISO 527-2:2012.
2. The polymer composition according to claim 1 , wherein the recycled PP is present between 80-86 wt %.
3. The polymer composition according to claim 1 , wherein the polymer composition has a total rubber content of between 5-15 wt %.
4. The polymer composition according to claim 1 , wherein the POE is selected from a C2-C6 copolymer or a C2-C8 copolymer with between 70-80 wt % ethylene, wherein wt % is relative to the POE.
5. The polymer composition according to claim 1 , wherein the POE comprises an ethylene (C2) octene (C8) metallocene rubber with a blocky structure.
6. The polymer composition according to claim 1 , wherein the POE has a density of between 0.85-0.89; determined using ISO 1183-1:2012.
7. The polymer composition according to claim 1 , wherein the POE has a melt flow rate MFR (190° C., 2.16 kg) between 0.3-1; determined using ISO 1133-1:2011.
8. The polymer composition according to claim 1 , wherein the POE is between 2-15 wt %.
9. The polymer composition according to claim 1 , wherein the SEBS is present between 0.5-6 wt %.
10. The polymer composition according to claim 1 , wherein the composition comprises less than 8 wt % of a recycled high density polyethylene.
11. The polymer composition according to claim 1 , wherein the talcum is present between 3-10 wt %.
12. The polymer composition according to claim 1 , wherein the talcum is a fine talcum having a D50 of less than 4 micron (ISO 13317-3).
13. The polymer composition according to claim 1 , wherein the polymer composition has a modulus ranging between 810-1300 MPa determined using ISO 527-2:2012.
14. The polymer composition according to claim 1 , wherein the polymer composition has a Charpy notched impact strength of between 5-20 KJ/m2; determined using ISO 179-1:2010).
15. The polymer composition according to claim 1 , wherein the polymer composition has a melt flow rate MFR (230° C., 2.16 kg) of between 5-25 g/10 min; determined using ISO 1133-1:2011.
16. Articles comprising the polymer composition according to claim 1 , which are formed by injection molding.