Reactive liquid polymer crosslinking agent and process for preparation

A method for preparing a reactive liquid polymer cross-linking agent comprising the steps of:

• a) reacting a starting material comprising a substituted 1,3,5-triazine having at least one amino or mono-substituted amino group, in the presence of water, with an acid alkyl sulfonate and/or an acid alkyl phosphonate, to form a reaction mixture;
• b) heating said reaction mixture for a specified time period to a specified temperature, and at a pressure in the range of approximately 1-100 psi and a pH in the range of approximately 2.3 and 8.7;
• and
• c) adding a solidifying modifier to said reaction mixture to form a substituted amino 1,3,5-triazine hydrate, said solidifying modifier being a polyhydric alcohol.

A method for preparing a substituted amino 1,3,5-triazine hydrate comprising the steps of:

• a) mixing a 1,3,5-triazine having at least one amino or mono-substituted amino group, water and an acid alkyl sulfonate and/or an acid alkyl phosphonate, to form a reaction mixture;
• b) heating and hydrating said reaction mixture for approximately 1-90 minutes to a temperature of approximately 43-152° C., at a pressure in the range of approximately 1-100 psi and a pH in the range of approximately 2.3 and 8.7;
• c) cooling said reaction mixture to a temperature between approximately 22.2 and 92.5° C;
• d) separating out any unreacted substituted 1,3,5-triazine from the reaction mixture;
• e) adding a solidifying modifier having a hydroxyl functional group to said hydrated reaction mixture to form said substituted amino 1,3,5-triazine hydrate;
• and
• f) washing and recycling the separated out unreacted substituted 1,3,5-triazine.