Composition of additives comprising a copolymer and a resin
US-2024076567-A1 · Mar 7, 2024 · US
Graft copolymer as a gas hydrate inhibitor
US8975362B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8975362-B2 |
| Application number | US-73927608-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 5, 2008 |
| Priority date | Dec 28, 2007 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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Graft copolymers based on a polyamide which was reacted with maleic anhydride and which has at least one vinylically unsaturated side chain are proposed, this grafted side chain containing at least one representative selected from a) N-vinylcaprolactam and/or b) N-vinylpyrrolidone. Inter alia, natural but also synthetic polyamides are provided as preferred polyamide components. Such graft copolymers, but also generally polyamide-based graft copolymers composed of at least one side chain containing ethylenically unsaturated compounds, are in general suitable in construction chemistry applications but also in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep wells and moreover in the extraction and the transport of oil or gas and here in particular as a gas hydrate inhibitor.
First claim
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The invention claimed is: 1. A graft copolymer based on a polyamide which was reacted with maleic anhydride, wherein the graft copolymer comprises at least one vinylically unsaturated side chain, comprising a grafted side chain, wherein the grafted side chain comprises at least one member selected from the group consisting of a) N vinylcaprolactam and b) N-vinylpyrrolidone, wherein the graft copolymer is biodegradable, wherein the polyamide is natural. 2. A graf…
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- C09K8/524Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8975362B2 cover?
- Graft copolymers based on a polyamide which was reacted with maleic anhydride and which has at least one vinylically unsaturated side chain are proposed, this grafted side chain containing at least one representative selected from a) N-vinylcaprolactam and/or b) N-vinylpyrrolidone. Inter alia, natural but also synthetic polyamides are provided as preferred polyamide components. Such graft copol…
- Who is the assignee on this patent?
- Reichenbach-Klinke Roland, Neubecker Karin, Basf Se
- What technology area does this patent fall under?
- Primary CPC classification C09K8/524. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 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).