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US-2015111254-A1 · Apr 23, 2015 · US
Curable compositions based on epoxy resins without benzyl alcohol
US9676898B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9676898-B2 |
| Application number | US-201314425180-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 21, 2013 |
| Priority date | Sep 7, 2012 |
| Publication date | Jun 13, 2017 |
| Grant date | Jun 13, 2017 |
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- Title
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Abstract
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The invention relates to curable compositions comprising at least one epoxy resin and at least one hardener wherein the hardener is a compound of formula (I) or (II) where R 1 and R 2 are each independently selected from the group of substituents having the formula —(CH 2 ) x —NH 2 and x is in each case independently 0, 1, 2, 3 or 4, to surfaces comprising such compositions, to methods comprising applying a coating material comprising such compositions and to the use of such compositions as surface protection.
First claim
Opening claim text (preview).
The invention claimed is: 1. A curable composition, comprising: an epoxy resin and a hardener, wherein the hardener is a compound of formula (I) or (II) where R 1 and R 2 are each independently a substituent having formula —(CH 2 ) x —NH 2 and x is in each case independently a number of 0, 1, 2, 3 or 4. 2. The composition according to claim 1 , wherein x in R 1 and R 2 is 1. 3. The composition according to claim 1 , wherein the hardener is 5-aminomethyl-2-furfurylamine. 4. The composition according to claim 1 , wherein the epoxy resin is an epoxy resin based on bisphenol A diglycidyl ether, bisphenol F diglycidyl ether, and cycloaliphatic resins. 5. The composition according to claim 1 , which comprises less than 20 g of benzyl alcohol per 100 g of total hardeners comprised therein. 6. The composition according to claim 1 , which comprises less than 4 wt % of benzyl alcohol. 7. The composition according to claim 1 , which comprises no benzyl alcohol. 8. The composition according to claim 1 , wherein a stoichiometric ratio of a total amount of the epoxy resin to a total amount of the hardener is from 0.7 to 1.3. 9. The composition according to claim 8 , wherein the stoichiometric ratio of the total amount of the epoxy resin to the total amount of the hardener is from 0.9 to 1.1. 10. The composition according to claim 1 , further comprising: a second hardener comprising at least two or more primary and/or secondary amine groups. 11. The composition according to claim 1 , further comprising: a reaction accelerant. 12. The composition according to claim 1 , further comprising: a reactive diluent. 13. The composition according to claim 1 , further comprising pigments, fillers and/or additives. 14. A surface, which is coated with the composition according to claim 1 . 15. A method of coating a surface, the method comprising applying to the surface a coating material comprising the composition according to claim 1 . 16. The method according to claim 15 , wherein the surface is a surface comprising metal, mineral substrate, plastic, paint/varnish, polymer concrete, adhesive, fibre composite, potting composition or an impregnation. 17. A surface protection on a surface or an impregnation, comprising: the composition according to claim 1 , wherein the surface comprises metal, mineral substrate, plastic, paint/varnish, polymer concrete, adhesive, fibre composite, or potting composition. 18. A composition obtained by a process comprising: curing the composition according to claim 1 . 19. The composition according to claim 10 , wherein the second hardener is selected from the group consisting of methylenedianiline, N-aminoethylpiperazine, isophoronediamine, m-phenylenebis(methylamine), 1,3- and/or 1,4-bis(aminomethyl)cyclohexane, trimethylhexamethylenediamine, a polyoxyalkyleneamine, a polyaminoamide, and a reaction product of an amine with acrylonitrile and a Mannich base.
Assignees
Inventors
Classifications
Five-membered rings · CPC title
Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins · CPC title
containing an atom other than nitrogen belonging to the amine group, carbon and hydrogen · CPC title
aromatic · CPC title
Next to metal · CPC title
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- What does patent US9676898B2 cover?
- The invention relates to curable compositions comprising at least one epoxy resin and at least one hardener wherein the hardener is a compound of formula (I) or (II) where R 1 and R 2 are each independently selected from the group of substituents having the formula —(CH 2 ) x —NH 2 and x is in each case independently 0, 1, 2, 3 or 4, to surfaces comprising such com…
- Who is the assignee on this patent?
- Ortelt Martina, Spyrou Emmanouil, Pfeffer Jan Christoph, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C08G59/5046. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 13 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).