3M Innovative Properties Company

Stephen Richard Hartshorn

Larry R Krepski

Douglas Eugene Weiss

Yi He

Clayton Allen George

Diane R Wolk

Yifan Zhang

Mark W Nelson

Paul D Driscoll

Morgan J Tamsky

A functionalized polymer is disclosed that comprises the reaction product of a polymer having one or more pendant reactive functional groups and a color changing indictor having a co-reactive functional group. The co-reactive functional group of the color changing is able to react with the reactive functional group of the polymer to form a covalent bond. Therefore, the color changing indicator is pendant from the polymer. The color changing indicator maintains its ability to produce a visually discernable color change in the presence of an associated stimulus.

Functional polymer with a pendant color changing indicator

Curable mechanical fasteners of the invention comprise a fastening surface comprising a curable material, wherein the fastening surface is capable of being repeatedly attached and unattached to a complementary fastening surface, and when attached to the complementary fastening surface and cured, the curable mechanical fastener is capable of becoming permanently attached to the complementary fastening surface. The curable mechanical fastener may also further comprise the complementary fastening surface.

Curable mechanical fasteners

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Saint Paul, MN, United States of America

Stephen Richard Hartshorn