Hot-melt adhesive composition
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United States of America Patent
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May 15, 2018
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N/A
app pub date -
Oct 20, 2014
filing date -
Oct 25, 2013
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Abstract
Provided are an adhesive composition suitable for a hot-melt adhesive which has a low tack and which after adhering to an adherend and through heat treatment comes to have sufficient adhesive force; and an adhesive product using the adhesive composition. The hot-melt adhesive composition includes an acrylic block copolymer (I) having at least one polymer block (A) including methacrylic acid ester units and at least one polymer block (B) including acrylic acid ester units, wherein the acrylic acid ester units constituting the polymer block (B) contain an acrylic acid ester (1) represented by CH2═CH—COOR1 (1) (wherein R1 is an organic group having 1 to 3 carbon atoms) and an acrylic acid ester (2) represented by CH2═CH—COOR2 (2) (wherein R2 is an organic group having 4 to 12 carbon atoms), and a mass ratio (1)/(2) of the acrylic acid ester (1) to the acrylic acid ester (2) is 90/10 to 25/75.
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