The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2017
Filed:
Dec. 28, 2015
3m Innovative Properties Company, St. Paul, MN (US);
David J. Yarusso, Shoreview, MN (US);
Thu-Van T. Tran, Maplewood, MN (US);
Soyoung Kim, San Jose, CA (US);
Ross E. Behling, Woodbury, MN (US);
Karl E. Benson, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An adhesive composition includes a first acrylic polymer preparable from first components and a second acrylic polymer. The first components comprising i) a branched first alkyl (meth)acrylate having from 4 to 22 carbon atoms, and ii) at least one of acrylic acid and methacrylic acid. The second acrylic polymer is preparable from second components comprising iii) at least one second alkyl (meth)acrylate having from 4 to 22 carbon atoms, iv) a (meth)acrylamide represented by the formula wherein Ris H or methyl, and Rand Reach independently represents H or an alkyl group having from 1 to 8 carbon atoms, or taken together Rand Rmay form a divalent alkylene group having from 4 to 6 carbon atoms, and v) at least one high Tmacromer having a terminal free-radically polymerizable unsaturated group, the high Tmacromer having a Tof at least 45° C. Based on the combined total weight of the at least one first acrylic polymer and the at least one second acrylic polymer, the at least one second acrylic polymer is present at a level of from 5 to 40 percent by weight. Methods of making the adhesive composition are also disclosed.