Agonists of EPHA and their uses
US-11814372-B2 · Nov 14, 2023 · US
Method for producing polyisocyanates comprising iminooxadiazinedione groups and use of these
US2016145221A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016145221-A1 |
| Application number | US-201414905547-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 21, 2014 |
| Priority date | Jul 25, 2013 |
| Publication date | May 26, 2016 |
| Grant date | — |
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Abstract
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The present invention relates to a method for producing polyisocyanates comprising iminooxadiazinedione groups, wherein at least one monomeric di- and/or tri-isocyanate is oligomerised in the presence of a) at least one catalyst, b) at least one additive (A) having a relative permittivity at 18° C. to 30° C. of less than 4.0, c) optionally further additives other than A. The invention relates further to a reaction system for producing polyisocyanates comprising iminooxadiazinedione groups, and to the use of an additive (A) having a relative permittivity at 18° C. to 30° C. of less than 4.0 for producing polyisocyanates comprising iminooxadiazinedione groups by catalysed modification of monomeric di- and/or tri-isocyanates.
First claim
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1 . A method for producing polyisocyanates containing iminooxadiazinedione groups, comprising oligomerizing at least one monomeric di- and/or tri-isocyanate in the presence of a) at least one catalyst, b) at least one additive (A) having a relative permittivity at 18° C. to 30° C. of less than 4.0, c) optionally further additives other than A. 2 . A method according to claim 1 , wherein additive (A) is added to the monomeric di- and/or tri-isocyanate before it is br…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C07D273/04Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US2016145221A1 cover?
- The present invention relates to a method for producing polyisocyanates comprising iminooxadiazinedione groups, wherein at least one monomeric di- and/or tri-isocyanate is oligomerised in the presence of a) at least one catalyst, b) at least one additive (A) having a relative permittivity at 18° C. to 30° C. of less than 4.0, c) optionally further additives other than A. The invention relates f…
- Who is the assignee on this patent?
- Covestro Deutschland Ag
- What technology area does this patent fall under?
- Primary CPC classification C07D273/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).