Alkoxysilane-functionalized allophanates
US-2017369626-A1 · Dec 28, 2017 · US
Monoallophanates based on alkoxysilane alkyl isocyanates
US10351579B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10351579-B2 |
| Application number | US-201615771227-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2016 |
| Priority date | Oct 29, 2015 |
| Publication date | Jul 16, 2019 |
| Grant date | Jul 16, 2019 |
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Abstract
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A monoallophanate can be used in paint or adhesive compositions. The monoallophanate has the formula 1: where R, R 1 -R 6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2.
First claim
Opening claim text (preview).
The invention claimed is: 1. A monoallophanate having the formula (1): wherein R, R 1 -R 6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each 0. 2. The monoallophanate according to claim 1 , wherein R 1 and R 5 are each independently methyl or ethyl. 3. The monoallophanate according to claim 1 , wherein R 2 and R 4 are each independently methyl or propyl. 4. The monoallophanate according to claim 1 , wherein R 1 =R 5 and R 2 =R 4 . 5. The monoallophanate according to claim 1 , wherein R 1 and R 5 are each methyl or ethyl, and R 2 and R 4 are each methyl or propyl. 6. The monoallophanate according to claim 1 , wherein R 1 =R 5 =methyl, and R 2 =R 4 =propyl. 7. A process for preparing the monoallophanate according to claim 1 , the process comprising: reacting A) an isocyanate comprising at least one alkoxysilane group with B) a monourethane comprising at least one alkoxysilane group, at temperatures in the range from 20 to 220° C. 8. The process for preparing the monoallophanate according to claim 7 , wherein the monourethane of B) is represented by formula (3): R n (OR 1 ) 3-n Si—R 2 —NH—(C=O)—OR 3 (3) wherein R, R 1 , R 2 and R 3 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system. 9. The process for preparing the monoallophanate according to claim 8 , wherein R 2 is methyl or propyl, and R 1 is methyl or ethyl and R 3 =R 1 . 10. The process for preparing the monoallophanate according to claim 8 , wherein the monourethane of B) is N-trimethoxysilylpropylmethyl carbamate. 11. The process for preparing the monoallophanate according to claim 7 , wherein the isocyanate of A) is represented by formula (2): R 6 m (OR 5 ) 3-m Si—R 4 —NCO (2) wherein R 6 , R 5 and R 4 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system. 12. The process for preparing the monoallophanate according to claim 11 , wherein R 4 is methyl or propyl, and R 5 is methyl or ethyl. 13. The process for preparing the monoallophanate according to claim 11 , wherein the isocyanate of A) is isocyanatopropyltrimethoxysilane. 14. A paint composition, which comprises the monoallophanate according to claim 1 . 15. An adhesive composition, which comprises the monoallophanate according to claim 1 .
Assignees
Inventors
Classifications
Polyurethanes · CPC title
containing -OH groups · CPC title
containing allophanate groups · CPC title
Polymers of esters of acrylic or methacrylic acid · CPC title
Polyurethanes · CPC title
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Frequently asked questions
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- What does patent US10351579B2 cover?
- A monoallophanate can be used in paint or adhesive compositions. The monoallophanate has the formula 1: where R, R 1 -R 6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2.
- Who is the assignee on this patent?
- Evonik Degussa Gmbh
- What technology area does this patent fall under?
- Primary CPC classification C07F7/1804. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 16 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).