3m Innovative Properties Company

Xiao Gao

Kathleen S Shafer

Cyrus A Anderson

Sheng Ye

Thomas Q Chastek

James M Nelson

Matthew J Schmid

Provided are methods and associated compositions directed to a structural bonding adhesive. The structural bonding adhesive is made by mixing a curable composition comprising a mixture of a first curable resin and a second curable resin to provide an uncured adhesive. The uncured adhesive is irradiated by a first actinic light source to polymerize the first curable resin without polymerizing the second curable resin to provide a partially cured adhesive. The partially cured adhesive is a pressure-sensitive adhesive that displays cold flow creep recovery under ambient conditions and is capable of being fully cured by irradiating the partially cured adhesive using a second actinic light source that is different from the first actinic light source to polymerize the second curable resin.

Dual stage structural bonding adhesive

Methods of bonding together substrates that do not require use of primers, mixing, fixturing, or autoclaving. These methods can include the steps of disposing an adhesive layer on a bonding surface of either substrate, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing one substrate so as to be bonded to the other substrate by the adhesive layer; and allowing the adhesive layer to cure.

Methods of bonding substrates together

Methods of bonding hardware to glass and other substrates are provided that do not require use of primers, mixing, fixturing, or autoclaving. These methods include the steps of disposing an adhesive layer on a bonding surface of either the hardware or the vehicular glass, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing the hardware so as to be bonded to the vehicular glass by the adhesive layer; and allowing the adhesive layer to cure.

Growing community of inventors

Woodbury, MN, United States of America

Xiao Gao