Process for making crosslinked cable insulation using high melt strength ethylene-based polymer made in a tubular reactor and optionally modified with a branching agent
US-11912852-B2 · Feb 27, 2024 · US
Superabsorbent polymer
US9669385B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9669385-B2 |
| Application number | US-201615337033-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 28, 2016 |
| Priority date | Dec 3, 2013 |
| Publication date | Jun 6, 2017 |
| Grant date | Jun 6, 2017 |
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.
Disclosed herein are a superabsorbent polymer resin incorporated with a particles meeting the following properties i) to ii): i) a BET specific surface area of 300 to 1500 m 2 /g, ii) a porosity of 50% or more, and a method for preparing the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. A superabsorbent polymer resin, meeting both the conditions represented by the following Mathematical Formulas 1 and 2: RA 1= D am (850 μm+)/ D bm (850 μm+)≧0.2 [Math Formula 1] RA 2= D am (600 μm+)/ D bm (600 μm+)≧0.65 [Math Formula 2] (wherein, D am (x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater after milling and D bm (x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling). 2. The superabsorbent polymer resin of claim 1 , further meeting the condition represented by the following Mathematical Formula 3: RA3=[ D bm (850 μm+)/ D bm (150˜850 μm)]*100≦4.0 [Math Formula 3] (wherein, D bm (x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling, and D bm (y˜z μm) is a proportion of superabsorbent polymer resins having a particle size of from y μm to z μm before milling). 3. The superabsorbent polymer resin of claim 1 , further meeting the condition represented by the following Mathematical Formula 4: RA4=[ D bm (850 μm+)/ D bm (300˜850 μm)]*100≦4.5 [Math Formula 4] (wherein, D bm (x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling, and D bm (y˜z μm) is a proportion of superabsorbent polymer resins having a particle size of from y μm to z μm before milling). 4. The superabsorbent polymer resin of claim 1 , wherein the superabsorbent polymer resin is incorporated with a particle meeting the following properties i) to ii): i) a BET specific surface area of 300 to 1500 m 2 /g, ii) a porosity of 50% or more. 5. A superabsorbent polymer resin, meeting both the conditions represented by the following Mathematical Formulas 2 and 3: RA 2= D am (600 μm+)/ D bm (600 μm+)≧0.65 [Math Formula 2] RA 3=[ D bm (850 μm+)/ D bm (150˜850 μm)]*100≦4.0 [Math Formula 3] (wherein, D am (x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater after milling, D bm (x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling, and D bm (y˜z μm) is a proportion of superabsorbent polymer resins having a particle size of from y μm to z μm before milling). 6. The superabsorbent polymer resin of claim 5 , further meeting the condition represented by the following Mathematical Formula 4: RA 4=[ D bm (850 μm+)/ D bm (300˜850 μm)]*100≦4.5 [Math Formula 4] (wherein, D bm (x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling, and D bm (y˜z μm) is a proportion of superabsorbent polymer resins having a particle size of from y μm to z μm before milling). 7. The superabsorbent polymer resin of claim 5 , wherein the superabsorbent polymer resin is incorporated with a particles meeting the following properties i) to ii): i) a BET specific surface area of 300 to 1500 m 2 /g, ii) a porosity of 50% or more.
Assignees
Inventors
Classifications
the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels · CPC title
Compositions of unspecified macromolecular compounds · CPC title
Expanded, porous or hollow particles · CPC title
Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title
Differential crosslinking of one polymer with one crosslinking type, e.g. surface crosslinking · 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 US9669385B2 cover?
- Disclosed herein are a superabsorbent polymer resin incorporated with a particles meeting the following properties i) to ii): i) a BET specific surface area of 300 to 1500 m 2 /g, ii) a porosity of 50% or more, and a method for preparing the same.
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F283/065. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 06 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).