2 results about "Pyrocatechols" patented technology

This invention relates to a method for preparing and applying a mussel-inspired water-resistant adhesive gel based on polyacrylic acid and catechol-modified epoxidized vegetable oil, belonging to the field of environmentally friendly polymer adhesive materials. This invention utilizes a dense hydrogen bond network and chain entanglement between catechol-modified epoxidized vegetable oil and polyacrylic acid, combining mussel-inspired adhesion with the hydrophobic properties of oleogels, achieving rapid gelation and high cohesive strength. The resulting adhesive exhibits a dry-state bond strength as high as 24.30 MPa and demonstrates excellent durability in humid environments, reaching a strength of 2.83 MPa after 6 months of water immersion. Furthermore, the adhesive can recover approximately 78% of its adhesive force through a re-curing process, and the underwater bond strength further enhances in subsequent cycles, maintaining effective underwater adhesion for over a year. It also exhibits good resistance to harsh environments such as extreme temperatures and solutions.