Hot-melt pressure sensitive adhesive composition and uses thereof
AssigneeNautilus Solutions, LLC
InventorsCharles Terrell Williams, Edward Ewart La Fleur
Life of this patent
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Abstract
Pressure sensitive macromolecular adhesive polymers and compositions capable of integrating fluoropolymeric properties with a catechol-amine functionality to form an adhesive system that allows bonding between metallic substrates and fluoropolymers are disclosed. Also disclosed are core-shell polymeric particles comprised of a core and a shell comprising a thermoplastic polydopamine polymer that may be prepared as a colloidal suspension and used as a hot-melt pressure sensitive adhesive capable of binding low surface energy materials, such as polyolefins and fluoropolymers, to diverse materials including metals.
Claims27
A pressure sensitive adhesive coating comprising one or more core-shell particles, wherein
- (a) the core is a polymeric particle comprised of one or more polymers or the core is an inorganic particle comprised of one or more non-metallic inorganic materials,
- (b) the shell comprises a thermoplastic polydopamine polymer comprised of dopamine monomers polymerized with one or more carboxylic acids and/or carboxylic acid anhydrides, and
- (c) 0 to 100 percent of the shell polydopamine polymer is grafted onto the core;
- and
- wherein the core-shell particles are substantially free of water or liquids.
A hot-melt pressure sensitive adhesive comprising core-shell polymeric particles having a core particle and a shell of thermoplastic polydopamine polymer, wherein:
- (i) the thermoplastic polydopamine polymer is made by a process comprising contacting monomers of dopamine and/or dopamine analogs with one or more carboxylic acids in the presence of the core particle and a redox initiator in a basic buffer solution, permitting the monomers to undergo a polymerization reaction thereby forming a polydopamine polymer comprising polymerized quinone, semiquinone, semiquinone ester bearing an esterified carboxylic acid, quinol, and/or quinol esters bearing one or more esterified carboxylic acids of the dopamine and/or dopamine analogs;
- and
- (ii) the core particle is comprised of a fluorinated thermoset plastic or fluorinated thermoplastic.
Dependencies are inferred from the claim text.