Shear-resistant pressure-sensitive adhesive with high tack
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United States of America Patent
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Dec 5, 2017
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Nov 19, 2014
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Dec 18, 2013
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Abstract
Crosslinked pressure-sensitive adhesives (PSAs) based on polymers of branched macromolecules each comprising a main chain and one or more sidechains pendent to the main chain, the constitutional units thereof originating from a) X wt % of one or more acrylic and/or methacrylic esters, with 80<=X<=99.5; b) Y wt % of radically copolymerizable monomers having at least one acid function, with 0.5<=Y<=15; c) Z wt % of vinyl compounds, with 0<=Z<=5, at least one sidechain pendent to the main chain having a number-average molar mass >=1000 g/mol, and the respective amounts of constitutional units originating from a), b) and c) can be the same in each case or differ by not more than 1%, and where a), b) and c) may in each case be the same or different monomers, have detachment properties which can be set independently of one another.
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