3m Innovative Properties Company

Michael J Irwin

David J Muir

Kent S Tarbutton

Frank A Brandys

A one-part curable epoxy adhesive composition is provided. The adhesive comprises curable epoxy resin, a latent curative system comprising (a) at least one first curative encapsulated in thermoplastic polymeric microcapsules and (b) a second latent curative admixed in the curable epoxy resin, and sufficient particulate thermoplastic polymeric material to at least partially regionally plasticize the cured epoxy resin wherein up to all of the particulate thermoplastic polymeric material may be provided by the walls of the microcapsules. A method of curing the adhesive by heating the composition is also provided. A joint made by adhering members together with the adhesive composition and a method of making the joint are also provided.

Ambient-temperature-stable, one-part curable epoxy adhesive

An encapsulated breaker slurry composition for reducing the viscosity of a fracturing fluid. The slurry has a flashpoint above,&deg; C., and the liquid of the slurry does not facilitate release of the breaker from the coating. Methods of using the slurry composition are also described.

Encapsulated breaker slurry compositions and methods of use

An encapsulated breaker is enclosed within a hydrolytically degradable polymer coating. Compositions containing this encapsulated breaker, methods of making and methods of use are also described.

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London, Canada

Michael J Irwin