Patent ID: 8741430

Claim:
An amino-formaldehyde resin prepared using a formulation comprising, under condensation reaction conditions, formaldehyde, glycerin and at least one compound selected from the group consisting of urea, melamine, and mixtures thereof; wherein; the amino-formaldehyde resin is prepared in a substantial absence of a sulfonating agent, ethylene glycol, and polyalkylene glycols; if the at least one compound is urea, then the urea is present in a final molar ratio of formaldehyde to urea ranging from about 0.70 to about 1.30; if the at least one compound is melamine, then the melamine is present in a final molar ratio of formaldehyde to melamine ranging from about 1.3 to about 2.2; and if the at least one compound is a mixture of urea and melamine, then the mixture of urea and melamine is present in a final molar ratio of formaldehyde to urea and melamine ranging from about 0.35 to about 1.3; and wherein; the amino-formaldehyde resin has improved storage stability, as compared to a conventional resin which has the same final ratio of formaldehyde to amino compounds as the amino-formaldehyde resin but which does not use glycerin in the formulation; and the amino-formaldehyde resin comprises a glycerin modified amino-formaldehyde resin prepared by introducing the glycerin using a front end addition process.