Blue Filament Law PLLC
Adhesive compositions with repair-rework ability
An adhesive composition is provided that includes a block copolymer present at greater than or equal to 30 total weight percent of the adhesive system comprising a high glass transition temperature in subunits Y and Y′, each of the subunits Y and Y′ having a high glass transition temperature of from 70° C. to 130° C. with a low glass transition temperature subunit Z having a low glass transition temperature of from −100° C. to 10° C. intermediate between said high glass transition temperature acrylate subunits to define a structure Y-Z-Y′. The triblock copolymer is dissolved in a monomer curable under free radical. A free radical initiator of a peroxide or a hydroperoxide are present in combination with a sulfonyl chloride, dihydropyridine and copper or vanadium salt. By heating the cured adhesive at or above 70° C., the adhesive is amenable to being removed, repaired, or reworked.
Illinois Tool Works, Inc.
B C C C B B C C C B C B B C C B B C B B C
B32B C09J C09J C09J B32B B32B C09J C08F C08K B32B C09J B32B B32B C08F C09J B32B B32B C09J B32B B32B C09J
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Welkin Daniel K. Peter A. Camus Frank
Li Doe Carbutt Weng Zhao