Glycidyl amine epoxy resins based on AMES negative amines

A system comprising:

• a coating system comprising
• a reaction product of a glycidyl amine epoxy resin of Formula (III A) cured with a hardener, wherein Formula (III A) is represented by:
• wherein n is 1 to 20,
• wherein the glycidyl amine epoxy resin of Formula (III A) is obtained by a the reaction of a glycidyl amine epoxy resin of Formula (II) with a diamine of Formula (I),
• wherein the glycidyl amine epoxy resin of Formula (II) is obtained by a reaction of a diamine of Formula (I) with epichlorohydrin, wherein the structure of Formula (II) is represented by:
• and
• wherein the structure of the diamine of Formula (I) is represented by
• wherein
• the diamine of Formula (I) has at least two amine groups with at least one labile hydrogen on each nitrogen;
• at least one nitrogen atom of the diamine of Formula (I) is directly attached to an aromatic ring on one side;
• at least one amine group of the diamine of Formula (I) is a hindered amine due to a hindered aromatic ring having at least one substitution on the ring at an ortho position to a carbon which is directly attached to amine group;
• each R1 and R2 of the diamine of Formula I is a divalent group independently selected from the group consisting of aromatic, ortho substituted aromatic, ar-aliphatic, substituted ar-aliphatic and substituted aliphatic;
• each R3 and R4 of the diamine of Formula I is independently selected from the group consisting of hydrogen, aromatic, ortho substituted aromatic;
• ar-aliphatic;
• substituted ar-aliphatic, and substituted aliphatic;
• at least one group out of R1, R2, R3 and R4 of the diamine of Formula I is independently a hindered aromatic, wherein the hindered aromatic is an ortho substituted aromatic;
• R1 and R4, or, R2 and R3 can be connected;
• and
• wherein the diamine of structural Formula (I) is AMES negative.