UV resistant, clear, moisture curable silane functional polyolefin-based compositions, articles including the same, and methods of using the same
View Patent ↗A moisture curable composition that includes a silage functional polyolefin, a first thermoplastic polymer that includes a thermoplastic elastomer selected from the group consisting of block copolymer selected from the group consisting of styrene-ethylene-butylene-styrene block copolymer, styrene-ethylene-propylene-styrene block copolymer, and combinations thereof, the block copolymer including no greater than 30 mole % styrene, saturated ethylene alphaolefin copolymer, butyl rubber, and combinations thereof, and polybutene having a number average molecular weight less than 5000, the composition being clear and resistant to ultraviolet light.
1. A moisture curable composition comprising:
a silane functional polyolefin;
a first thermoplastic polymer comprising a thermoplastic elastomer selected from the group consisting of
block copolymer selected from the group consisting of styrene-ethylene-butylene-styrene block copolymer, styrene-ethylene-propylene-styrene block copolymer, and combinations thereof, the block copolymer comprising no greater than 30 mole % styrene,
saturated ethylene alphaolefin elastomer, and
combinations thereof; and
polybutene having a number average molecular weight less than 5000,
the composition being transparent or translucent and resistant to ultraviolet light.
2. The composition of claim 1 further comprising a second thermoplastic polymer different from the first thermoplastic polymer and the silane functional polyolefin, the second thermoplastic polymer being a solid at room temperature and being derived from alphaolefin monomers.
3. The composition of claim 2 , further comprising a hydrogenated tackifying agent.
4. The composition of claim 1 , further comprising a hydrogenated tackifying agent.
5. The composition of claim 2 , wherein the second thermoplastic polymer comprises at least one of butene-1 copolymer, butylene-propylene copolymer, and ethylene-octene copolymer.
6. The composition of claim 1 , wherein the polybutene is a homopolymer and the composition comprises from about 10% by weight to about 35% by weight polybutene homopolymer.
7. The composition of claim 1 further comprising from about 5% by weight to about 20% by weight of a second thermoplastic polymer different from the first thermoplastic polymer and the silane functional polyolefin, the second thermoplastic polymer being solid at room temperature.
8. The composition of claim 2 , wherein the polybutene is a homopolymer and the composition comprises
from about 5% by weight to about 20% by weight of the block copolymer,
from about 5% by weight to about 20% by weight of the second thermoplastic polymer, and
from about 10% by weight to about 35% by weight polybutene homopolymer.
9. The composition of claim 1 , wherein the composition, when in the form of a 0.01 inch thick cured film, has a transmittance of at least 75%.
10. The composition of claim 1 , wherein the composition, when in the form of a 0.01 inch thick cured film, has a Gardner color of no greater than 4 after 2000 hours of continuous exposure to ultraviolet light having a wavelength from 340 nanometer to 360 nanometer.
11. The composition of claim 1 , wherein the composition is foamed.
12. The composition of claim 1 , wherein the composition comprises styrene-ethylene-butene-styrene block copolymer.
13. The composition of claim 1 , wherein the composition comprises a block copolymer and the block copolymer comprises no greater than 20 mole % styrene.
14. A method of making a glass assembly, the method comprising:
contacting at least one of a first substrate and a second substrate with the composition of claim 4 , the first substrate comprising at least one of polymer, wood, metal, and glass, and the second substrate comprising glass; and
contacting the other of the first substrate and the second substrate with the composition.
15. The method of claim 14 , wherein the first substrate comprises at least one of a window frame and an insulating glass unit comprising at least two panes of glass separated by a spacer.
16. The method of claim 15 further comprising foaming the composition.
17. A back bedding method comprising:
applying the composition of claim 4 to at least one of a pane of glass and a frame; and
contacting the composition with the other of the pane of glass and the frame.
18. A glass assembly comprising:
a first pane of glass;
a substrate; and
the composition of claim 1 in contact with the first pane of glass and the substrate.
19. A foam gasket comprising:
a moisture cured composition derived from the composition of claim 1 ,
the gasket being transparent or translucent.
20. The gasket of claim 19 having a Gardner color of no greater than 4 after 2000 hours of constant exposure to ultraviolet light having a wavelength from 340 nanometer to 360 nanometer.
21. A foam gasket comprising:
a moisture cured composition derived from the composition of claim 1 , the gasket being at least one of transparent and translucent.
22. The gasket of claim 21 having a Gardner color of no greater than 4 after 2000 hours of constant exposure to ultraviolet light having a wavelength from 340 nanometer to 360 nanometer.
23. A moisture vapor barrier comprising the composition of claim 1 .
24. A sealant comprising the composition of claim 1 .
25. A moisture vapor barrier comprising:
a cured composition derived from the composition of claim 1 .
26. A sealant comprising:
a cured composition derived from the composition of claim 1 .
27. A moisture curable composition comprising:
a silane functional polyolefin;
a first thermoplastic polymer comprising a thermoplastic elastomer selected from the group consisting of
block copolymer selected from the group consisting of styrene-ethylene-butylene-styrene block copolymer, styrene-ethylene-propylene-styrene block copolymer, and combinations thereof, the block copolymer comprising no greater than 30 mole % styrene,
saturated ethylene alphaolefin elastomer, and
combinations thereof;
from about 5% by weight to about 20% by weight of the block copolymer;
from about 10% by weight to about 35% by weight polybutene homopolymer having a number average molecular weight less than 5000; and
from about 5% by weight to about 20% by weight of a second thermoplastic polymer that is different from the first thermoplastic polymer, the second thermoplastic polymer being a solid at room temperature and being derived from alphaolefin monomers,
the composition being transparent or translucent and resistant to ultraviolet light.
28. A foamed moisture curable composition comprising:
a silane functional polyolefin;
a first thermoplastic polymer comprising a thermoplastic elastomer selected from the group consisting of
block copolymer selected from the group consisting of styrene-ethylene-butylene-styrene block copolymer, styrene-ethylene-propylene-styrene block copolymer, and combinations thereof, the block copolymer comprising no greater than 30 mole % styrene,
saturated ethylene alphaolefin elastomer, and
combinations thereof; and
polybutene having a number average molecular weight less than 5000,
the composition being transparent or translucent, resistant to ultraviolet light and in the form of a foam.
29. The composition of claim 27 , wherein the block copolymer comprises styrene-ethylene-butene-styrene block copolymer.
30. The composition of claim 27 further comprising a hydrogenated tackifying agent.
31. The composition of claim 27 , wherein the second thermoplastic polymer comprises at least one of butene-1 copolymer, butylene-propylene copolymer, and ethylene-octene copolymer.
32. The composition of claim 27 , wherein the composition, when in the form of a 0.01 inch thick cured film, has a transmittance of at least 75%.
33. The composition of claim 27 , wherein the composition, when in the form of a 0.01 inch thick cured film, has a Gardner color of no greater than 4 after 2000 hours of continuous exposure to ultraviolet light having a wavelength from 340 nanometer to 360 nanometer.