Pipe with an outer wrap
US-2016356405-A1 · Dec 8, 2016 · US
Polyolefin composition for water pipes with good resistance to chlorine dioxide and low migration
US8969445B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8969445-B2 |
| Application number | US-200913141660-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 17, 2009 |
| Priority date | Dec 22, 2008 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention relates to a polyolefin composition with good resistance to degradation caused by chlorine dioxide-containing water and at the same time showing low migration of the used additives and its decomposition products, especially phenols, out of the composition. The present invention is also directed to a pipe made of such a polyolefin composition. The present invention further relates to the use of the polyolefin composition for the production of a pipe and to the use of a combination of particular types of antioxidants for increasing the resistance of a polyolefin composition against degradation caused by contact with chlorine dioxide-containing water and for maintaining at the same time a low migration of the used additives and its decomposition products, especially phenols, out of the polyolefin composition.
First claim
Opening claim text (preview).
The invention claimed is: 1. A pipe formed of a polyolefin composition consisting of a) a polyolefin base resin (A) consisting of a polyethylene homo- or copolymer, and a specific combination of two antioxidants consisting of (B) and (C): b) 150 to 500 ppm of an antioxidant (B) according to formula (I): wherein R 1 , R 2 , R 3 , R 4 and R 5 independently are H, or…
Assignees
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Classifications
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- F16L9/127Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8969445B2 cover?
- The present invention relates to a polyolefin composition with good resistance to degradation caused by chlorine dioxide-containing water and at the same time showing low migration of the used additives and its decomposition products, especially phenols, out of the composition. The present invention is also directed to a pipe made of such a polyolefin composition. The present invention further …
- Who is the assignee on this patent?
- Anker Martin, Hagstrand Per-Ola, Jamtvedt Svein, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F16L9/127. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 03 2015 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).