Curing Agents Providing a Low Ratio of Thin-Film Cure Time to Gel Time

A two component curable system comprising:

• (A) a curable component comprising an epoxy resin;
• and
• (B) a curing agent component comprising a reaction product obtained from the reaction of a liquid epoxy and a polyamine component consisting of a cycloaliphatic polyamine compound having the formula (1)
• where R and R1 are, in each instance independently of one another hydrogen or a linear or branched C1-C5 alkyl group;
• X is a C6-C20 cycloaliphatic radical;
• a is an integer from 1-5;
• and b is an integer from 1-5 and wherein after contacting components (A) and (B) exhibits a ratio of cure-through time to gel time of less than about 6.

A method for preparing a two-component curable system comprising:

• providing a curable component comprising an epoxy resin in one container;
• and providing a curing agent component comprising a reaction product obtained from the reaction of a liquid epoxy and a polyamine component consisting of a cycloaliphatic polyamine compound having the formula (1)
• where R and R1 are, in each instance independently of one another hydrogen or a linear or branched C1-C5 alkyl group;
• X is a C6-C20 cycloaliphatic radical;
• a is an integer from 1-5;
• and b is an integer from 1-5 and optionally a solvent in a second container.

A method of forming a coating from a two component curable system comprising the steps of:

• contacting a curing agent component comprising an epoxy resin with a curable component comprising a reaction product obtained from the reaction of a liquid epoxy and a polyamine component consisting of a cycloaliphatic polyamine compound having the formula (1)
• where R and R1 are, in each instance independently of one another hydrogen or a linear or branched C1-C5 alkyl group;
• X is a C6-C20 cycloaliphatic radical;
• a is an integer from 1-5;
• and b is an integer from 1-5 and optionally a solvent;
• and subjecting the mixture to curing conditions to cure the mixture.

A method for forming a protective coating on a substrate comprising:

• applying a curing agent component comprising a reaction product obtained from the reaction of a liquid epoxy and a polyamine component consisting of a cycloaliphatic polyamine compound having the formula (1)
• where R and R1 are, in each instance independently of one another hydrogen or a linear or branched C1-C5 alkyl group;
• X is a C6-C20 cycloaliphatic radical;
• a is an integer from 1-5;
• and b is an integer from 1-5 and optionally a solvent to one or more surfaces of a substrate, prior to, subsequently to, or simultaneously with a curable component comprising an epoxy resin to form a coating and curing coating at ambient conditions and/or by application of heat.

A method of bonding at least two substrates together comprising:

• i. providing a part (A) containing a curable component comprising an epoxy resin;
• ii. providing a part (B) containing a curing agent component comprising a reaction product obtained from the reaction of a liquid epoxy and a polyamine component consisting of a cycloaliphatic polyamine compound having the formula (1)
• where R and R1 are, in each instance independently of one another hydrogen or a linear or branched C1-C5 alkyl group;
• X is a C6-C20 cycloaliphatic radical;
• a is an integer from 1-5;
• and b is an integer from 1-5;
• iii. contacting parts (A) and (B) to form a mixture;
• iv. applying the mixture to at least one surface of one or more of the substrates;
• and
• v. matingly engaging the surfaces of the substrates which are to be bonded together permitting the mixture to cure to form a bond there between.