Autonomic Materials, Inc.

Subramanyam V Kasisomayajula

Gerald O Wilson

Christopher R D Dayton

Aidnel Geister R Navarro

Diana Rodriguez

Angela C Smith

Swapnil Shukla

Christopher R Dayton

Mei-Hsiu Lai

Ryan T Blanchette

Self-healing compositions, method of preparation and uses thereof are disclosed. In an example, a self-healing composition includes a first microcapsule and a second microcapsule. The first microcapsule includes a first polydimethylsiloxane resin, a first silicone fluid, a first functionalized alkoxysilane, and a catalyst capable of catalyzing hydrosilylation reactions, and the second microcapsule includes a second polydimethylsiloxane resin, a second silicone fluid, a second functionalized alkoxysilane, and a hydrogen-terminated dimethyl siloxane resin. In this way, the self-healing composition releases and mixes contents of the first microcapsule and the second microcapsule upon the rupture thereof, imparting a passively initiated repair process to the self-healing composition.

Silicone-based protective formulations

Embodiments provide a self-healing coating formulation comprised of a one component waterborne epoxy-amine adduct resin system and a microencapsulated healing agent. The self-healing coating formulation hardens to a protective material upon application to a substrate. Components in the protective material and microencapsulated healing agent are uniquely synergistic with each other such that, upon degradation of the protective material, microcapsule rupture causes release of the healing agent, whereby components of the healing agent react with components of the protective material to increase adhesion maintenance and corrosion resistance of the protective coating.

One-component waterborne self-healing epoxy formulation

Microencapsulated healing agents that, upon incorporation into a zinc-rich coating or coating system, improve the coating or coating system's ability to maintain its adhesion and corrosion resistance after damage that exposes the underlying substrate. These microencapsulated healing agent formulations are uniquely synergistic with zinc-rich coatings, and/or with zinc particles in a zinc rich coating, improving both adhesion maintenance and corrosion resistance following damage that exposes the substrate.

Zinc-rich coatings and systems with microencapsulated healing agents

Disclosed herein are methods and formulations for the microencapsulation of aminosiloxanes, for example for use as an additive in protective material formulations such as those used in the protection and/or joining of metal substrates. The additives may be used in conjunction with a second reactant that may or may not be similarly microencapsulated for self-healing (and associated corrosion resistance) or delayed cure applications, or they may be used alone or in conjunction with other corrosion inhibitors for protective formulations with improved corrosion resistance on appropriate substrates.

Microencapsulated aminosiloxanes for protective material formulations

Disclosed herein are compositions and methods for increasing microcapsule dispersion in self-healing paint and coating applications, and more particularly for non-covalent functionalization of polymeric microcapsule shell walls for improved dispersion in polymeric material formulations. Some embodiments are methods of forming a microcapsule dispersion, the methods including providing a polymeric material capable of forming a plurality of microcapsules; initiating polymerization of the polymeric material under reaction conditions sufficient to permit formation of the plurality of microcapsules; and adding an ethoxy-functionalized dispersant to the polymeric material before formation of the plurality of microcapsules is complete, thereby forming the microcapsule dispersion.

Growing community of inventors

Champaign, IL, United States of America

Subramanyam V Kasisomayajula