Adhesive composition
The present disclosure provides a composition. The composition contains (A) an ethylene/α-olefin copolymer containing (i) ethylene and (ii) from 20 wt % to 35 wt % C 6 -C 8 α-olefin comonomer, the ethylene/α-olefin copolymer having a density from 0.880 g/cc to 0.895 g/cc, a melt viscosity, at 177° C., from 4,000 mPa·s to 20,000 mPa·s, and a glass transition temperature from −55° C. to −20° C.; (B) a tackifier, and (C) a wax.
1. A composition comprising:
(A) from 35 wt % to 45 wt % of a random ethylene/α-olefin copolymer consisting of (i) ethylene and (ii) from 20 wt % to 35 wt % C 6 -C 8 α-olefin comonomer, the ethylene/α-olefin copolymer having
a density from 0.880 g/cc to 0.895 g/cc;
a melt viscosity, at 177° C., from 12,000 mPa·s to 20,000 mPa·s;
a glass transition temperature from −55° C. to −20° C.;
(B) from 35 wt % to 45 wt % of a tackifier;
(C) from 15 wt % to 25 wt % of a wax selected from the group consisting of an ethylene-based wax having a melt viscosity at 135° C. less than or equal to 100 mPa·s, a propylene-based wax having a melt viscosity at 170° C. less than or equal to 100 mPa·s, and combinations thereof; and
wherein (A), (B), and (C) are the only polymeric components present in the composition; and
the composition has
(i) a set time of less than 3 seconds; and
(ii) a fiber tear greater than 90% at a temperature range from −20° C. to 60° C.
2. The composition of claim 1 , wherein the ethylene/α-olefin copolymer has a melting temperature from 77° C. to 83° C.
3. The composition of claim 2 , wherein the α-olefin comonomer is hexene.
4. The composition of claim 3 , wherein the tackifier is a hydrogenated hydrocarbon resin.
5. The composition of claim 1 , wherein the composition has a heat stress greater than 60° C.
6. An article comprising at least one component formed from the composition of claim 1 .
7. The composition of claim 1 , wherein the ethylene/α-olefin copolymer has a crystallization temperature from 60° C. to 65° C.
8. The composition of claim 1 , wherein the composition comprises an antioxidant.
9. A composition comprising:
(A) from 35 wt % to 45 wt % of a single olefin-based polymer that is a random olefin-based polymer having a melt viscosity, at 177° C., from 12,000 mPa·s to 20,000 mPa·s that is an ethylene/α-olefin copolymer consisting of (i) ethylene and (ii) from 20 wt % to 25 wt % C 6 -C 8 α-olefin comonomer, the ethylene/α-olefin copolymer having
a density from 0.880 g/cc to 0.895 g/cc;
a glass transition temperature from −55° C. to −20° C.;
(B) from 35 wt % to 45 wt % of a tackifier; and
(C) from 15 wt % to 25 wt % of a wax selected from the group consisting of an ethylene-based wax having a melt viscosity at 135° C. less than or equal to 100 mPa·s, a propylene-based wax having a melt viscosity at 170° C. less than or equal to 100 mPa·s, and combinations thereof.
10. The composition of claim 9 wherein (A), (B), and (C) are the only polymeric components present in the composition.
11. The composition of claim 10 , wherein the composition comprises an antioxidant.
12. The composition of claim 1 wherein the composition is of void of rosin ester.
13. The composition of claim 11 wherein the composition is of void of rosin ester.