Epoxy resin composition comprising 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine as hardener

Patent metadata

Field	Value
Publication number	US-10214612-B2
Application number	US-201715604118-A
Country	US
Kind code	B2
Filing date	May 24, 2017
Priority date	Jun 10, 2016
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

An epoxy resin composition including A) at least one epoxy compound, and B) a hardener composition including B1) from 0.1%-100% by weight of 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine, and B2) from 99.9%-0% by weight of at least one further diamine and/or polyamine, where the stoichiometric ratio of the epoxy groups of A) and the number of active hydrogen atoms of the functional groups of B) varies from 1:2 to 2:1.

First claim

What is claimed is:

1. An epoxy resin composition comprising:
A) an epoxy compound
and
B) a hardener composition comprising:
B1) from 0.1%-100% by weight of 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine

and
B2) from 99.9%-0% by weight of at least one further diamine and/or polyamine,

where the stoichiometric ratio of the epoxy groups of A) and the number of active hydrogen atoms of the functional groups of B) varies from 1:2 to 2:1,
C) optionally from 0.1% to 10% by weight of at least one hardening accelerator,
D) optionally at least one latent hardener,
where the amounts of A)-D) add up to 100% by weight,
E) optionally further additives.

2. The epoxy resin composition according to claim 1 , wherein the epoxy compound A) is selected from the group consisting of saturated, unsaturated, aliphatic, cycloaliphatic, aromatic and heterocyclic epoxy compounds and these may also have hydroxyl groups.

3. The epoxy resin composition according to claim 2 , wherein the at least one di- and/or polyamines B2) is present and selected from isophoronediamine, 4,4′-diaminodicyclohexylmethane, 2,4′-diaminodicyclohexylmethane, 2,2′-diaminodicyclohexylmethane, alone or in mixtures of the isomers, a mixture of the isomers of 2,2,4-trimethylhexamethylenediamine and 2,4,4-trimethylhexamethylenediamine, adduct hardeners based on the reaction products of epoxy compounds and di- and/or polyamines B2) or combination of the aforementioned di- and/or polyamines B2) are present.

4. The epoxy resin composition according to claim 2 , wherein the component B2) comprises the following amines, alone or in mixtures:
aliphatic amines, polyalkylenepolyamines, ethylene-1,2-diamine, propylene-1,2-diamine, propylene-1,3-diamine, butylene-1,2-diamine, butylene-1,3-diamine, butylene-1,4-diamine, 2-(ethylamino)ethylamine, 3-(methylamino)propylamine, diethylenetriamine, triethylenetetramine, pentaethylenehexamine, trimethylhexamethylenediamine, 2,2,4-trimethylhexamethylenediamine, 2,4,4-trimethylhexamethylenediamine, 2-methylpentanediamine, hexamethylenediamine, N-(2-aminoethyl)ethane-1,2-diamine, N-(3-aminopropyl)propane-1,3-diamine, N,N″-1,2-ethanediylbis(1,3-propanediamine), dipropylenetriamine, adipic dihydrazide, hydrazine;
oxyalkylenepolyamines selected from polyoxypropylenediamine and polyoxypropylenetriamine, 1,13-diamino-4,7,10-trioxatridecane, 4,7-dioxadecane-1,10-diamine;
cycloaliphatic amines selected from isophoronediamine (3,5,5-trimethyl-3-aminomethylcyclohexylamine), 4,4′-diaminodicyclohexylmethane, 2,4′-diaminodicyclohexylmethane and 2,2′-diaminodicyclohexylmethane, alone or in mixtures of the isomers, 3,3′-dimethyl-4,4′-diaminodicyclohexylmethane, N-cyclohexyl-1,3-propanediamine, 1,2-diaminocyclohexane, 3-(cyclohexylamino)propylamine, piperazine, N-aminoethylpiperazine, TCD diamine (3(4),8(9)-bis(aminomethyl)tricyclo[5.2.1.0 2,6 ]decane), 4-methylcyclohexane-1,3-diamine
araliphatic amines such as xylylenediamines;
aromatic amines selected from phenylenediamines, phenylene-1,3-diamine, phenylene-1,4-diamine, 4,4′-diaminodiphenylmethane, 2,4′-diaminodiphenylmethane, 2,2′-diaminodiphenylmethane, alone or in mixtures of the isomers;
adduct hardeners which are the reaction products of epoxy compounds, or glycidyl ethers of bisphenol A and F, with excess amine;
polyamidoamine hardeners which are obtained by condensation of mono- and polycarboxylic acids with polyamines, or by condensation of dimer fatty acids with polyalkylenepolyamines;
Mannich base hardeners which are obtained by reaction of mono- or polyhydric phenols with aldehydes or formaldehyde, and polyamines;
Mannich bases based on phenol and/or resorcinol, formaldehyde and m-xylylenediamine, and N-aminoethylpiperazine and blends of N-aminoethylpiperazine with nonylphenol and/or benzyl alcohol, phenalkamines which are obtained in a Mannich reaction from cardanols, aldehydes and amines.

5. The epoxy resin composition according to claim 1 , wherein the epoxy compound A) is selected from the group consisting of glycidyl ethers, glycidyl esters, aliphatic epoxides, diglycidyl ethers based on bisphenol A and/or bisphenol F, glycidyl methacrylates.

6. The epoxy resin composition according to claim 5 , wherein the at least one di- and/or polyamines B2) is present and selected from isophoronediamine, 4,4′-diaminodicyclohexylmethane, 2,4′-diaminodicyclohexylmethane, 2,2′-diaminodicyclohexylmethane, alone or in mixtures of the isomers, a mixture of the isomers of 2,2,4-trimethylhexamethylenediamine and 2,4,4-trimethylhexamethylenediamine, adduct hardeners based on the reaction products of epoxy compounds and di- and/or polyamines B2) or combination of the aforementioned di- and/or polyamines B2).

7. The epoxy resin composition according to claim 5 , wherein component B2) comprises the following amines, alone or in mixtures:
aliphatic amines, polyalkylenepolyamines, ethylene-1,2-diamine, propylene-1,2-diamine, propylene-1,3-diamine, butylene-1,2-diamine, butylene-1,3-diamine, butylene-1,4-diamine, 2-(ethylamino)ethylamine, 3-(methylamino)propylamine, diethylenetriamine, triethylenetetramine, pentaethylenehexamine, trimethylhexamethylenediamine, 2,2,4-trimethylhexamethylenediamine, 2,4,4-trimethylhexamethylenediamine, 2-methylpentanediamine, hexamethylenediamine, N-(2-aminoethyl)ethane-1,2-diamine, N-(3-aminopropyl)propane-1,3-diamine, N,N″-1,2-ethanediylbis(1,3-propanediamine), dipropylenetriamine, adipic dihydrazide, hydrazine;
oxyalkylenepolyamines selected from polyoxypropylenediamine and polyoxypropylenetriamine, 1,13-diamino-4,7,10-trioxatridecane, 4,7-dioxadecane-1,10-diamine;
cycloaliphatic amines selected from isophoronediamine (3,5,5-trimethyl-3-aminomethylcyclohexylamine), 4,4′-diaminodicyclohexylmethane, 2,4′-diaminodicyclohexylmethane and 2,2′-diaminodicyclohexylmethane, alone or in mixtures of the isomers, 3,3′-dimethyl-4,4′-diaminodicyclohexylmethane, N-cyclohexyl-1,3-propanediamine, 1,2-diaminocyclohexane, 3-(cyclohexylamino)propylamine, piperazine, N-aminoethylpiperazine, TCD diamine (3(4),8(9)-bis(aminomethyl)tricyclo[5.2.1.0 2,6 ]decane), 4-methylcyclohexane-1,3-diamine
araliphatic amines, xylylenediamines;
aromatic amines selected from phenylenediamines, phenylene-1,3-diamine, phenylene-1,4-diamine, 4,4′-diaminodiphenylmethane, 2,4′-diaminodiphenylmethane, 2,2′-diaminodiphenylmethane, alone or in mixtures of the isomers;
adduct hardeners which are the reaction products of epoxy compounds, or glycidyl ethers of bisphenol A and F, with excess amine;
polyamidoamine hardeners which are obtained by condensation of mono- and polycarboxylic acids with polyamines, or by condensation of dimer fatty acids with polyalkylenepolyamines;
Mannich base hardeners which are obtained by reaction of mono- or polyhydric phenols with aldehydes or formaldehyde, and polyamines;
Mannich bases based on phenol and/or resorcinol, formaldehyde and m-xylylenediamine, and N-aminoethylpiperazine and blends of N-aminoethylpiperazine with nonylphenol and/or benzyl alcohol, phenalkamines which are obtained in a Mannich reaction from cardanols, aldehydes and amines.

8. The epoxy resin composition according to claim 1 , wherein the epoxy compound A) is selected from the group consisting of epoxy resins based on bisphenol A diglycidyl ether, epoxy resins based on bisphenol F diglycidyl ether, 4,4′-methylenebis[N,N-bis(2,3-epoxypropyl)aniline], hexanediol diglycidyl ether, butanediol diglycidyl ether, trimethylolpropane triglycidyl ether, propane-1,2,3-triol triglycidyl ether, pentaerythritol tetraglycidyl ether, diglycidyl hexahydrophthalate, aliphatic and cycloaliphatic epoxy resin types.

9. The epoxy resin composition according to claim 8 , wherein the component B2) comprises the following amines, a

Assignees

• Evonik Degussa Gmbh

Inventors

• Langkabel Eike
• Ortelt Martina
• Fuchsmann Dirk
• Balthasar Jaclyn
• Rüfer Alexander Martin
• Rittsteiger Anne
• Nitz Jörg-Joachim
• Kohlstruk Stephan

Classifications

• C08G59/5026

  cycloaliphatic · CPC title

• C08G59/506 Primary

  having one nitrogen atom in the ring · CPC title