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:
Feb. 24, 2026
Filed:
Apr. 13, 2021
3m Innovative Properties Company, St. Paul, MN (US);
Rajdeep S. Kalgutkar, Woodbury, MN (US);
David T. Amos, St. Paul, MN (US);
Ignatius A. Kadoma, Cottage Grove, MN (US);
Joseph A Severance, Lake Elmo, MN (US);
Jilliann M. Nelson, Maplewood, MN (US);
Annabelle Watts, Minneapolis, MN (US);
Jonathan J. Anderson, New Brighton, MN (US);
Kimberly C. M. Schultz, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Branched amorphous polyamide (co)polymers having a backbone formed by reacting a reaction mixture including at least 25 mol % of a di-amine selected from a secondary di-amine, a branched di-amine, or a combination thereof; and an aliphatic acid blend including a branched aliphatic dimer acid and a branched aliphatic trimer acid. The molar equivalent ratio of the di¬ amine to the aliphatic acid blend is 0.9-1.1. Preferably, the branched amorphous polyamide (co)polymer is not telechelic. The branched amorphous polyamide (co)polymer preferably exhibits one or more of a shear modulus of from 10,000 to 500,000 Pa at 70° C., a complex viscosity of greater than 1,000,000 mPa*s at 70° C., a glass transition temperature of less than 25° C., or a number average molecular weight of greater than 10,000 Da. Biodegradable and/or compostable adhesive articles including the branched amorphous polyamide (co)polymer also are disclosed.