Dow Global Technolgoies LLC

Ling Zhang-Watson

Yi Jin

Wanfu Ma

Santosh S Bawiskar

Allan Walter Mclennaghan

Kyle D Anderson

Olaf Henschke

A composition comprising an acid and/or anhydride grafted ethylene/alpha-olefin interpolymer that comprises the following properties: A) number of grafts per polymer chain&#x2265;1.80, and B) melt viscosity (at 177&#xb0; C.)&#x2264;50,000 mPa&#xb7;s.

Functionalized ethylene/alpha-olefin interpolymers with high graft levels

The present disclosure provides a composition. In an embodiment a composition is provided and includes: (A) a propylene-based interpolymer having the following: (i) a density from 0.850 g/cc to 0.900 g/cc; and (ii) a melt viscosity, at 177&#xb0; C., less than, or equal to, 10, 000 mPa&#xb7;s.; and (B) a rosin ester containing the following: (i) greater than, or equal to, 75 mol % aliphatic carbon, based on total moles of carbon in the rosin ester; and (ii) less than, or equal to, 3.0 mol % ester group carbon, based on total moles of carbon in the rosin ester.

Adhesive composition

The present disclosure provides a composition. In an embodiment an adhesive composition is provided and includes (A) a propylene-based interpolymer having a density from 0.850 g/cc to 0.900 g/cc; (B) an ethylene-based polymer composition having a melt viscosity at 140&#xb0; C. from 10 mPa*s to 1,000 mPa*s; and (C) a tackifier. The composition has a molecular weight distribution ratio from 1.00 to 1.40, wherein the molecular weight distribution ratio is the molecular weight distribution of the propylene-based interpolymer of component (A) compared to the molecular weight distribution of the ethylene-based polymer composition of component (B). The composition has a density ratio from 0.93 to 1.30, wherein the density ratio is the density of the propylene-based interpolymer of component (A) compared to the density of the ethylene-based polymer composition of component (B).

A functionalized ethylene-based polymer dissolved in an appropriate solvent and applied to a nonpolar surface can change the surface polarity/characteristics of the nonpolar surface. This change to the surface polarity/characteristics of the nonpolar surface allows adhesion of materials, such as paint, to surfaces such as polypropylene, polyethylene and polyolefin elastomers.

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Missouri City, TX, United States of America

Ling Zhang-Watson