Amine Catalyst for Polyisocyanate Adhesive Curing

The patent applies parameter changes by introducing a temperature-sensitive catalyst system where the catalyst exhibits different activity levels at different temperatures. At room temperature, the catalyst has low activity to maintain long pot life, while at thermal compression temperature, it becomes highly active to achieve fast curing. This resolves the contradiction between high reactivity and long pot life by making the catalyst activity conditional on temperature parameters.

The patent uses parameter changes by employing a temperature-sensitive catalyst that undergoes activation at specific temperature thresholds. The catalyst remains inactive at low temperatures (preserving pot life) but becomes highly active at thermal compression temperatures (ensuring complete curing and maintaining physical properties). This allows maintaining both long pot life and high productivity without compromising material quality.

The patent applies periodic action through a temperature-sensitive catalyst system that switches between inactive and active states based on temperature conditions. During the mixing and application phase (low temperature), the catalyst is inactive, providing extended pot life. During the thermal compression phase (high temperature), the catalyst becomes active, enabling rapid curing. This periodic activation pattern resolves the contradiction between extended pot life and reduced bonding time.

The patent applies parameter changes by selecting a temperature-sensitive amine catalyst with appropriate solubility characteristics. The catalyst is designed to have sufficient solubility in the polyisocyanate compound at room temperature for uniform dispersion, while exhibiting temperature-dependent catalytic activity. This resolves the contradiction between high catalytic activity and uniform dispersion by optimizing the catalyst's chemical structure and solubility parameters.