Polyurethane elastomers made using mixtures of aliphatic diol chain extender and secondary amine
US-9221941-B2 · Dec 29, 2015 · US
Polyurethanes made with copper catalysts
US9718915B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9718915-B2 |
| Application number | US-201514709848-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 12, 2015 |
| Priority date | Jul 8, 2010 |
| Publication date | Aug 1, 2017 |
| Grant date | Aug 1, 2017 |
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- Title
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Abstract
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Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a copper catalyst that contains at least one copper atom associated with a polydentate ligand that contains at least one nitrogen-containing complexing site.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for preparing a polyisocyanate-based polymer, comprising forming a reaction mixture containing at least one polyisocyanate, at least one isocyanate-reactive compound having at least two isocyanate-reactive groups and at least one copper catalyst, and then curing the reaction mixture to form a polymer, wherein the copper catalyst contains at least one copper atom associated with a polydentate organic ligand having any of the structures 2. The process of claim 1 wherein the polyisocyanate-based polymer is a polyurethane, polyurea, or polyurethane-urea. 3. The process of claim 1 , wherein the reaction mixture further contains a blowing agent and a surfactant, and the polyisocyanate-based polymer is a foam. 4. The process of claim 1 , wherein the isocyanate-reactive compound includes a polyol having a molecular weight of from 800 to 12,000 and an average of from 1.8 to 2.5 hydroxyl groups per molecule, and the polyisocyanate-based polymer is a cast elastomer. 5. The process of claim 1 wherein the reaction mixture contains at least one additional catalyst.
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Inventors
Classifications
At least one oxygen and one nitrogen atom present as complexing atoms in an at least bidentate or bridging ligand · CPC title
containing oxyethylene end groups · CPC title
- C08G18/222Primary
metal compounds not provided for in groups C08G18/225 - C08G18/26 · CPC title
Manufacture of cellular products · CPC title
Copper · CPC title
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Frequently asked questions
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- What does patent US9718915B2 cover?
- Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a copper catalyst that contains at least one copper atom associated with a polydentate ligand that contains at least one nitrogen-containing complexing site.
- Who is the assignee on this patent?
- Keaton Richard, Margl Peter M, Romer Duane R, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C08G18/222. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 01 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).