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:
Jun. 29, 2021
Filed:
Mar. 10, 2017
3m Innovative Properties Company, St. Paul, MN (US);
Michael W. Kobe, Lake Elmo, MN (US);
Michael S. Wendland, North St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Composite granules that contain a binder and a polymeric sorbent material for capturing aldehydes such as formaldehyde are provided. Additionally, methods of making the composite granules, methods of using the composite granules to capture aldehydes, and compositions formed by reacting the composite granules with aldehydes are provided. The polymeric sorbent material included in the composite granules is a reaction product of a divinylbenzene/maleic anhydride precursor polymeric material with a nitrogen-containing compound. This reaction results in the formation of nitrogen-containing groups that are covalently attached to the polymeric sorbent. Aldehydes can react with the nitrogen-containing groups.