Polyethylene composition and film having outstanding properties
US-11352485-B2 · Jun 7, 2022 · US
Polyethylene composition and film having high stiffness, outstanding sealability and high permeability
US12344730B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12344730-B2 |
| Application number | US-202217724220-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 19, 2022 |
| Priority date | Jul 11, 2018 |
| Publication date | Jul 1, 2025 |
| Grant date | Jul 1, 2025 |
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- Title
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Abstract
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A polyethylene composition which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥200 MPa and an oxygen transmission rate (OTR) of ≥600 cm 3 per 100 inch 2 per day and when made into a film layer having a thickness of about 2 mil has a seal initiation temperature (SIT) of ≤90° C. and an area of hot tack window (AHTW) of ≥160 Newtons·° C.
First claim
Opening claim text (preview).
What is claimed is: 1. A polyethylene composition which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥200 MPa and an oxygen transmission rate (OTR) of ≥600 cm 3 per 100 inch 2 per day and when made into a film layer having a thickness of about 2 mil has a seal initiation temperature (SIT) of ≤90° C. and an area of hot tack window (AHTW) of ≥160 Newtons·° C. 2. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥210 MPa. 3. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥220 MPa. 4. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of 625 cm 3 per 100 inch 2 per day. 5. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of ≥650 cm 3 per 100 inch 2 per day. 6. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 2 mil has a seal initiation temperature (SIT) of ≤85° C. 7. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 2 mil has a seal initiation temperature (SIT) of ≤80° C. 8. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 2 mil has an area of hot tack window (AHTW) of ≥170 Newtons·° C. 9. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 2 mil has an area of hot tack window (AHTW) of ≥180 Newtons·° C. 10. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 2 mil has an area of hot tack window (AHTW) of ≥190 Newtons·° C. 11. A polyethylene composition which when made into a film layer having a thickness of about 1 mil, and when made into a film having a thickness of about 2 mil, satisfies the following relationships: i) area of hot tack window (AHTW)>−2.0981 (machine direction (MD) 1% secant modulus)+564.28; ii) oxygen transmission rate (OTR)>−5.4297 (machine direction (MD) 1% secant modulus)+1767.8; and iii) seal initiation temperature (SIT)<0.366 (machine direction (MD) 1% secant modulus)+22.509; wherein the AHTW and SIT are measured on the film layer having a thickness of about 2 mil, and wherein the machine direction (MD) 1% secant modulus and the OTR are measured on the film layer having a thickness of about 1 mil.
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Classifications
with aliphatic 1-olefins containing one carbon-to-carbon double bond · CPC title
used for films · CPC title
Ziegler natta catalyst · CPC title
containing three or more polymers in a blend · CPC title
containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title
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- What does patent US12344730B2 cover?
- A polyethylene composition which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥200 MPa and an oxygen transmission rate (OTR) of ≥600 cm 3 per 100 inch 2 per day and when made into a film layer having a thickness of about 2 mil has a seal initiation temperature (SIT) of ≤90° C. and an area of hot tack window (AHTW) of ≥160 Newt…
- Who is the assignee on this patent?
- Nova Chemicals International Sa
- What technology area does this patent fall under?
- Primary CPC classification C08F210/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 01 2025 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).