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US-2017355927-A1 · Dec 14, 2017 · US
Polyester polyol-containing polyurethane systems having improved hydrolytic stability
US10450402B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10450402-B2 |
| Application number | US-201816007441-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 13, 2018 |
| Priority date | May 25, 2007 |
| Publication date | Oct 22, 2019 |
| Grant date | Oct 22, 2019 |
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- Title
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Abstract
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An isocyanate reactive composition for making a polyurethane foam includes a tertiary amine urethane catalyst comprising a di(C1-C4)alkyl fatty alkyl amine and a polyester polyol. The use of one or more of fatty alkyl tertiary amine serves to reduce hydrolysis of the polyester polyol in the isocyanate reactive composition.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of making a polyurethane spray rigid foam, the method comprising combining a polyisocyanate and an isocyanate reactive composition comprising a polyester polyol, water and a urethane catalyst composition comprising 10 to 40 wt % pentamethyldiethylenetriamine, 20 to 80 wt % tris(dimethylaminopropyl) amine and 10 to 50 wt % dimethylhexadecyl amine. 2. The method of claim 1 , wherein the isocyanate reactive composition further comprises a fire retardant. 3. The method of claim 2 , wherein the isocyanate reactive composition further comprises a Mannich polyol. 4. The method of claim 3 , wherein the urethane catalyst composition comprises at least one other tertiary amine urethane catalyst. 5. The method of claim 3 , wherein the isocyanate reactive composition further comprises one or more blowing agents. 6. The method of claim 1 , wherein the isocyanate reactive composition further comprises at least one member selected from the group consisting of cell stabilizers, crosslinking agents, chain extenders, pigments, and fillers. 7. The method of claim 6 , wherein the chain extenders comprise at least one of ethylene glycol and 1,4-butanediol.
Assignees
Inventors
Classifications
having alkylene polyamine groups · CPC title
- C08G18/161Primary
containing two or more components to be covered by at least two of the groups C08G18/166, C08G18/18 or C08G18/22 · CPC title
Oxyalkylated polycondensates of aldehydes · CPC title
- C08G18/18Primary
containing secondary or tertiary amines or salts thereof · CPC title
Manufacture of cellular products · CPC title
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- What does patent US10450402B2 cover?
- An isocyanate reactive composition for making a polyurethane foam includes a tertiary amine urethane catalyst comprising a di(C1-C4)alkyl fatty alkyl amine and a polyester polyol. The use of one or more of fatty alkyl tertiary amine serves to reduce hydrolysis of the polyester polyol in the isocyanate reactive composition.
- Who is the assignee on this patent?
- Evonik Degussa Gmbh
- What technology area does this patent fall under?
- Primary CPC classification C08G18/161. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 22 2019 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).