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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.:

US 10221327 B1

PDFFull Text
Date of Patent:
Mar. 05, 2019

Filed:

Mar. 09, 2016

Water borne polyolefin dispersion coatings, and methods of making

Applicant:

Dow Global Technologies Llc, Midland, MI (US);

Inventors:

Ray E. Drumright, Midland, MI (US);

Bernhard Kainz, Lauf, DE;

Richard A. Lundgard, Midland, MI (US);

Cynthia Stants, Coleman, MI (US);

Houxiang Tang, Midland, MI (US);

Jeffrey Wilbur, Midland, MI (US);

Assignee:

Dow Global Technologies LLC, Midland, MI (US);

Attorneys:

Karl E. Stauss

Cantor Colburn LLP

Primary Examiner:

Robert S Loewe

Int. Cl.
CPC ...
C09D 5/00 (2006.01); C09D 123/12 (2006.01); C08L 23/08 (2006.01); C08L 23/14 (2006.01); C09D 123/08 (2006.01); C09D 123/10 (2006.01); C09J 123/08 (2006.01); C09J 123/10 (2006.01); C08L 51/06 (2006.01); C09D 7/48 (2018.01); C09D 7/65 (2018.01); C08K 5/134 (2006.01);
U.S. Cl.
CPC ...
C09D 123/12 (2013.01); C08L 23/0815 (2013.01); C08L 23/142 (2013.01); C08L 51/06 (2013.01); C09D 5/00 (2013.01); C09D 7/48 (2018.01); C09D 7/65 (2018.01); C09D 123/0815 (2013.01); C09D 123/10 (2013.01); C09J 123/0815 (2013.01); C09J 123/10 (2013.01); C08K 5/1345 (2013.01); C08L 2201/08 (2013.01); C08L 2201/54 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01);
Abstract

The present invention provides aqueous polyolefin dispersion compositions for use in metal coatings, such as can coatings, comprising one or more polyolefin base polymer, one or more at least partially neutralized olefinic stabilizing agent having an acid number (AN) of from 80 to 250, preferably, a polyolefin stabilizing agent, such as an olefin-carboxylic acid copolymer or a blend of two such polymers, an optional coupling agent having an acid number (AN) of from 10 to 70 and a melt index of from 500 to 5,000,000 grams of polymer melt passing in 10 minutes through a heated syringe or cylinder at 190° C. with a plunger loaded with 2.16 kg, preferably, a polymer, and a hindered phenolic antioxidant containing an ester linkage dispersed in the polyolefin dispersion composition. The hindered phenolic antioxidant containing an ester linkage can be masterbatched with a polyolefin base polymer, polyolefin stabilizing agent or a coupling agent which is a polymer, melt mixed with the remaining polyolefin composition and then dispersed with aqueous media and a neutralizing agent to form the aqueous dispersion.

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