Aqueous pigment dispersion
Patent Information
- Application Number
- DE602018091659
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2018-07-27
- Publication Date
- 2026-06-03
- Estimated Expiration
- 2038-07-27
AI Technical Summary
Pigment water dispersions suffer from issues such as mold growth and bacterial propagation over time, and existing technologies fail to provide adequate storage stability, particularly under high-temperature conditions, despite using crosslinked polymers with high acid values.
A pigment water dispersion containing a crosslinked polymer with an acid value of 70-300 mgKOH/g, combined with a formaldehyde-releasing compound, enhances storage stability by promoting charge repulsion between polymer particles through the plasticizing effect of formaldehyde, preventing aggregation.
The dispersion maintains excellent storage stability even under high-temperature conditions for extended periods, ensuring the pigment remains stable and dispersed effectively.