Mineral-filled polypropylene composition
US-2016024287-A1 · Jan 28, 2016 · US
Thermoplastic polyolefin blends having improved low temperature impact performance
US10875992B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10875992-B2 |
| Application number | US-201616306114-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 31, 2016 |
| Priority date | May 31, 2016 |
| Publication date | Dec 29, 2020 |
| Grant date | Dec 29, 2020 |
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Abstract
Official abstract text for this publication.
A composition comprising (A) from 30 wt % to 70 wt % of a propylene component including at least one propylene based polymer having a propylene content of at least 70.0 wt %, based on the total weight of the propylene based polymer, and a melt flow rate from 1.0 g/10 min to 100.0 g/10 min (ASTM D-1238 at 230° C., 2.16 kg); (B) from 1 wt % to 20 wt % of an ethylene component including at least one ethylene based polymer having an ethylene content of at least 85.0 wt %, based on the total weight of the ethylene based polymer, and a melt index from 0.1 g/10 min to 50.0 g/10 min (ASTM D-1238 at 190° C., 2.16 kg); (C) from 1 wt % to 40 wt % of an olefin block copolymer; and at least one of (D) from 1 wt % to 40 wt % of a polyolefin elastomer and (E) from 1 wt % to 30 wt % of a filler.
First claim
Opening claim text (preview).
What is claimed is: 1. A composition consisting of: (A) from 30 wt % to 70 wt % of a propylene component including at least one propylene based polymer having a propylene content of at least 70.0 wt %, based on the total weight of the propylene based polymer, and a melt flow rate from 1.0 g/10 min to 100.0 g/10 min (ASTM D-1238 at 230° C., 2.16 kg); (B) from 1 wt % to 20 wt % of an ethylene component including at least one ethylene based polymer having an ethylene content of at least 85.0 wt %, based on the total weight of the ethylene based polymer, a melt index from 0.1 g/10 min to 50.0 g/10 min (ASTM D-1238 at 190° C., 2.16 kg), and a density from 0.935 to 0.970 g/cc; (C) from 1 wt % to 40 wt % of an olefin block copolymer; and at least one of (D) from 1 wt % to 40 wt % of a polyolefin elastomer and (E) from 1 wt % to 30 wt % of a filler. 2. The composition of claim 1 , wherein the filler is talc. 3. The composition as claimed claim 1 , wherein the olefin block copolymer has a density from 0.850 g/cc to 0.890 g/cc (ASTM D792) and a melt index from 0.1 g/10 min to 10.0 g/10 min (ASTM D-1238 at 190° C., 2.16 kg). 4. The composition as claimed in claim 1 , wherein the polyolefin elastomer has a density from 0.850 g/cc g/cc to 0.890 g/cc (ASTM D792) and a melt index from 0.1 g/10 min to 30.0 g/10 min (ASTM D-1238 at 190° C., 2.16 kg). 5. The composition as claimed in claim 1 , further comprising a melt flow rate of greater than 7.0 g/10 min at 230° C., 2.16 kg. 6. The composition as claimed in claim 1 , further comprising a notched impact of greater than 45.0 kJ/m 2 at −20° C. 7. The composition as claimed in claim 1 , further comprising a notched impact of greater than 20.0 kJ/m 2 at −30° C. 8. The composition as claimed in claim 1 , further comprising a notched impact of greater than 7.0 kJ/m 2 at −45° C. 9. The composition as claimed in claim 1 , further comprising a flexural modulus of greater than 650 MPa.
Assignees
Inventors
Classifications
LDPE (radical process) · CPC title
Heterophasic composition · CPC title
Ethylene-propylene or ethylene-propylene-diene copolymers · CPC title
Silicon-containing compounds · CPC title
with aliphatic 1-olefins containing one carbon-to-carbon double bond · CPC title
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- What does patent US10875992B2 cover?
- A composition comprising (A) from 30 wt % to 70 wt % of a propylene component including at least one propylene based polymer having a propylene content of at least 70.0 wt %, based on the total weight of the propylene based polymer, and a melt flow rate from 1.0 g/10 min to 100.0 g/10 min (ASTM D-1238 at 230° C., 2.16 kg); (B) from 1 wt % to 20 wt % of an ethylene component including at least o…
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C08L23/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 29 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).