Exxonmobil Chemical Patents Inc.

Chad E Bernard

Patrick Brant

Peijun Jiang

Charles Lewis Sims

David Raymond Johnsrud

Disclosed herein are adhesives comprising a copolymer comprising at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one Cto Calpha-olefin. The copolymer has a molecular weight of less than 100,000 and a heat of fusion between about 10 and about 70 J/g. An adhesive containing the copolymer preferably exhibits at least 50% fiber tear at &#x2212;18&#xb0; C. and at least 50% fiber tear at +25&#xb0; C. using Inland paper board as a substrate; a viscosity of less than 50,000 mPa sec at 190&#xb0; C., a set time of less than 4 seconds and a toughness of at least 3.4 megajoule/m.

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Baytown, TX, United States of America

Chad E Bernard