Spray dried catalyst compositions, methods for preparation and use in olefin polymerization processes
US-2018051111-A1 · Feb 22, 2018 · US
Catalyst formulations
US11518825B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11518825-B2 |
| Application number | US-201917040166-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 4, 2019 |
| Priority date | Mar 23, 2018 |
| Publication date | Dec 6, 2022 |
| Grant date | Dec 6, 2022 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Embodiments of the present disclosure are directed towards catalyst formulations including a metallocene and a stearic compound selected from bis 2-hydroxyethyl stearyl amine, aluminum distearate, and combinations thereof, where the metallocene is represented by the following formula: (Formula (I)) wherein each n-PR is n-propyl, and each X is independently CH 3 , Cl, or F.
First claim
Opening claim text (preview).
What is claimed: 1. A method comprising: reducing support fines by removing a portion of support particles that are more than 1.0 standard deviations away from a mean particle diameter of a whole support particle population, wherein the particle size of the removed portion of support particles fines are smaller than an average particle size of the whole support particle population; forming a catalyst formulation that includes a portion of retained support particles; and utilizing the catalyst formulation in a gas phase polymerization.
Assignees
Inventors
Classifications
- C08F210/16Primary
Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title
- C08F4/76Primary
selected from titanium, zirconium, hafnium, vanadium, niobium or tantalum · CPC title
Heteroatom-substituted bridge, i.e. Cp or analog where the bridge linking the two Cps or analogs is substituted by at least one group that contains a heteroatom · CPC title
Metallocenes · CPC title
Ethene · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11518825B2 cover?
- Embodiments of the present disclosure are directed towards catalyst formulations including a metallocene and a stearic compound selected from bis 2-hydroxyethyl stearyl amine, aluminum distearate, and combinations thereof, where the metallocene is represented by the following formula: (Formula (I)) wherein each n-PR is n-propyl, and each X is independently CH 3 , Cl, or F.
- Who is the assignee on this patent?
- Univation Tech Llc
- 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 Dec 06 2022 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).