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. 28, 2012
Filed:
Nov. 09, 2009
Wayne W. Fan, Cottage Grove, MN (US);
Dong-wei Zhu, Shoreview, MN (US);
Qin Zhu, Shanghai, CN;
Jeffry L. Jacobs, Hastings, MN (US);
Mary Lou Morris, White Bear Lake, MN (US);
Kathleen R. Reynolds, Roseville, MN (US);
Uyen N. Tang, Huntington Beach, CA (US);
Wayne W. Fan, Cottage Grove, MN (US);
Dong-Wei Zhu, Shoreview, MN (US);
Qin Zhu, Shanghai, CN;
Jeffry L. Jacobs, Hastings, MN (US);
Mary Lou Morris, White Bear Lake, MN (US);
Kathleen R. Reynolds, Roseville, MN (US);
Uyen N. Tang, Huntington Beach, CA (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The present application is directed to an article comprising a dusty surface and a coating on the dusty surface comprising a coating polymer having a Tg less −20° C. and a method of reducing dust. In some embodiments, the polymer has a Tg less than −30° C., and in specific embodiments, the polymer has a Tg less than −45° C. The dusty surface may be, for example, crushed stone, coal, iron ore, gravel, sand or other aggregates (e.g. a roofing granule,) or a soil surface. Generally, the coating polymer comprises a polyacrylate, polyurethane, synthetic and natural rubber, silicone and other organic polymers. In specific embodiments, the coating polymer comprises an acrylic emulsion polymer.