One-part moisture curable hot melt silane functional poly-alpha-olefin sealant composition

1. A moisture curable sealant composition comprising:

silane functional poly-α-olefin polymer;

thermoplastic elastomer comprising a silane terminated block copolymer; and

tackifying agent.

2. A moisture curable sealant composition comprising:

silane functional poly-α-olefin polymer;

thermoplastic elastomer;

tackifying agent; and

poly-1-butene,

the thermoplastic elastomer comprising

a block copolymer selected from the group consisting of styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, and combinations thereof,

an ethylene-propylene copolymer, or

a combination thereof.

3. The moisture curable sealant composition of claim 2 , wherein the tackifying agent comprises a hydrogenated tackifying agent.

4. The composition of claim 2 , wherein the composition comprises from about 10% by weight to about 60% by weight block copolymer selected from the group consisting of styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, and combinations thereof.

5. The composition of claim 2 , further comprising a thermoplastic polymer comprising at least one of ethylene-butene copolymer, ethylene-propylene copolymer, ethylene-hexene copolymer, and ethylene-1-octene copolymer.

6. The composition of claim 2 , wherein the composition comprises from about 10% by weight to about 40% by weight of the thermoplastic elastomer.

7. A moisture curable sealant composition comprising:

silane functional poly-α-olefin polymer;

thermoplastic elastomer;

tackifying agent; and

ethylene vinyl acetate.

8. The sealant composition of claim 7 comprising

from about 5% by weight to about 80% by weight of the silane functional poly-α-olefin polymer,

from at least 10% by weight to about 75% by weight of the thermoplastic elastomer, and

from at least 5% by weight to about 60% by weight of the tackifying agent.