water-borne polyolefin dispersion coatings, and methods for preparing

摘要

waterborne polyolefin dispersion coatings, and methods for preparing. The present invention provides aqueous polyolefin dispersion compositions for use in metal coatings, such as tin coatings, comprising one or more polyolefin base polymer, one or more at least partially neutralized olefinic stabilizing agents having an (an) acid number of. 80 to 250, preferably a polyolefin stabilizing agent, such as an olefin-carboxylic acid copolymer or a mixture of two of these polymers, an optional coupling agent, having an acid number (an) of 10 to 70 and an index of fusion of 500 to 5,000,000 grams of polymer fusion passing in 10 minutes through a syringe or cylinder heated to 190 ° C with a 2.16 kg loaded plunger, preferably a polymer, and a prevented phenolic antioxidant containing a bond. of dispersed ester in the polyolefin dispersion composition. The hindered phenolic antioxidant containing an ester bond may be a base mixture with a polyolefin base polymer, polyolefin stabilizing agent or a coupling agent which is a polymer, a mixture fused to the remaining polyolefin composition and then dispersed with aqueous medium. and a neutralizing agent to form the aqueous dispersion.