Gunnable adhesive composition for use in construction membrane applications

1. A gunnable adhesive composition, which hardens to an adhesive product, where the gunnable adhesive composition comprises:

I) a component selected from a mixture and a reaction product, or a combination thereof of ingredients a) and b), where

ingredient a) is a silicone resin, which contains monofunctional units represented by R 1 3 SiO 1/2 and tetrafunctional units represented by SiO 4/2 , R 1 represents a substituted or unsubstituted monovalent hydrocarbon group and

ingredient b) is an organopolysiloxane comprising difunctional units of the formula R 2 R 3 SiO and terminal units of the formula R 4 a X 1 3-a SiG where R 2 is an alkoxy group or a monovalent unsubstituted or substituted hydrocarbon group; R 3 is a unsubstituted or substituted monovalent hydrocarbon group; R 4 is aminoalkyl or R 1 group; X 1 is a hydrolysable group; G is an oxygen atom or a divalent group linking the silicon atom of the terminal unit with another silicon atom and a is 0 or 1,

where the silicone resin and the organopolysiloxane are added in amounts to provide a ratio of the amount of silicone resin relative to the sum of the amounts of said resin in the organopolysiloxane (R/P ratio) ranging from 58% to 64%,

II) a filler,

III) a solvent,

optionally

IV) a silane crosslinker, and

optionally

V) a catalyst

where the gunnable adhesive composition has

a slump ranging from 0 mm to 5 mm at a temperature ranging from 0° C. to 100° C. as measured by ASTM C639, and

an extrusion capability with a minimum of 10 mL/min as measured by ASTM C1183; and

where the adhesive product has

a movement capability per ASTM C719 ranging from +/−5% to +/−50%,

a peak peel strength to low surface energy substrates and structural substrates of at least 5 pli (875.7 Nm −1 ) as measured by ASTM C794 as modified.

2. The gunnable adhesive composition of claim 1 , where ingredient a) has a weight average molecular weight greater than 3,000, and ingredient b) has a viscosity ranging from 0.02 Pa·s to 100 Pa·s at 25° C.

3. The gunnable adhesive composition of claim 1 further comprising an ingredient selected from: an adhesion promoter, a plasticizer, and a rheology modifier.

4. The gunnable adhesive composition of claim 1 where the catalyst is present.

5. A method of making the gunnable adhesive in accordance with claim 1 by mixing the ingredients present in a continuous, semi-continuous or batch process.

6. A method in accordance with claim 5 comprising a continuous method where ingredient IV) is present, and the method comprises:

1) feeding ingredients I), II), and III) to a continuous mixing device while removing ingredient III);

2) adding ingredient IV); and

optionally

3) adding additional solvent; and

optionally

4) adding ingredient V).

7. A method in accordance with claim 5 comprising a semi continuous method, where ingredient IV) is present and the method comprises:

1) premixing ingredients I), II), and III);

2) feeding the product of step 1) to a continuous mixing device while removing ingredient III);

3) adding ingredient IV); and

optionally

4) adding additional solvent; and

optionally

5) adding ingredient V).

8. A method in accordance with claim 5 comprising a batch method where the method comprises:

1) mixing ingredients I), II), III), and IV), while removing ingredient III); and

2) adding additional solvent.

9. A method in accordance with claim 5 comprising a batch method where the method comprises:

1) mixing ingredients I), II), III), and IV).

10. A method for adhering a construction membrane to a structure, where the method comprises:

i) applying a gunnable adhesive composition in accordance with claim 1 to the construction membrane and/or the structure,

ii) hardening the gunnable adhesive composition to form an adhesive product; and

iii) adhering the construction membrane to the structure through the adhesive product;

with the proviso that the method is primerless and free of surface treatment.

11. A method comprising:

i) applying a gunnable adhesive composition in accordance with claim 1 to a construction membrane,

ii) hardening the gunnable adhesive composition to form an adhesive product, and

iii) adhering the construction membrane to a second construction membrane through the adhesive product;

with the proviso that the method is primerless and free of surface treatment.

12. The method of claim 10 , where step ii) is performed before or during step iii).

13. The method of claim 10 , where

ingredient a) has a number average molecular weight greater than 3,000, and

ingredient b) has a viscosity ranging from 0.02 Pa·s to 100 Pa·s at 25° C.

14. The method of claim 10 , where the gunnable adhesive composition further comprises an ingredient selected from: a propellant, an adhesion promoter, a plasticizer, and a rheology modifier.

15. The method of claim 10 , where step i) is performed at ambient temperature.

16. A barrier comprising:

I) a building wrap, and

II) a film of a gunnable adhesive composition on a surface of the building wrap, where the gunnable adhesive composition is in accordance with claim 1 .

17. The barrier of claim 16 , where

ingredient a) has a number average molecular weight greater than 3,000, and

ingredient b) has a viscosity ranging from 0.02 Pa·s to 100 Pa·s at 25° C.

18. The barrier of claim 16 , where the gunnable adhesive composition further comprises an ingredient selected from: a propellant, an adhesion promoter, a plasticizer, and a rheology modifier.

19. The barrier of claim 16 , where the building wrap comprises a polyolefin, a halogenated polyolefin, or a combination thereof.

20. A structure comprising the barrier of claim 16 adhered to a surface of the structure.

21. The structure of claim 20 , where the barrier is selected from a sill wrap, a wall barrier sheet, a flooring barrier and an exterior insulation finishing system.

22. A building comprising:

I) a structure,

II) a film of an adhesive product, where the adhesive product is prepared by hardening a gunnable adhesive composition in accordance with claim 1 , and

III) a building wrap adhered to the structure through the adhesive product.

23. The building of claim 22 , where

ingredient a) has a weight average molecular weight greater than 3,000, and

ingredient b) has a viscosity ranging from 0.02 Pa·s to 100 Pa·s at 25° C.

24. The building of claim 22 , where the gunnable adhesive composition further comprises an ingredient selected from: an adhesion promoter, a plasticizer, and a rheology modifier.

25. The building of claim 22 , where the building wrap comprises a polyolefin, a halogenated polyolefin, or a combination thereof.

26. A method comprising:

i) applying a gunnable adhesive composition to a low surface energy substrate and/or a structural substrate, where the gunnable adhesive composition comprises

I) a component selected from a mixture and a reaction product, or a combination thereof of ingredients a) and b), where

ingredient a) is a silicone resin, which contains monofunctional units represented by R 1 3 SiO 1/2 and tetrafunctional units represented by SiO 4/2 , R 1 represents a substituted or unsubstituted monovalent hydrocarbon group and

ingredient b) is an organopolysiloxane comprising difunctional units of the formula R 2 R 3 SiO and terminal units of the formula R 4 a X 1 3-a SiG where R 2 is an alkoxy group or a monovalent unsubstituted or substituted hydrocarbon group; R 3 is a unsubstituted or substituted monovalent hydrocarbon group; R 4 is aminoalkyl or R 1 group; X 1 is a hydrolysable group; G is an oxygen atom or a divalent group linking the silicon atom of the terminal unit with another silicon atom and a is 0 or 1,

where the silicone resin and the organopolysiloxane are added in amounts to provide a ratio of the amount of silicone resin relative to the sum of the amounts of said resin in the organopolysiloxane (R/P ratio) ranging from 58% to 64%,

II) a filler,

III) a solvent,

optionally

IV) a silane crosslinker, and

optionally

V) a catalyst

where the gunnable adhesive composition has

a slump ranging from 0 mm to 5 mm at a temperature ranging from 0° C. to 100° C. as measured by ASTM C639, and

an extrusion capability with a minimum of 10 mL/min as measured by ASTM C1183;

ii) hardening the gunnable adhesive composition to form an adhesive product, where the adhesive product has

a movement capability per ASTM C719 ranging from +/−5% to +/−50%,

a peak peel strength to low surface energy substrates and structural substrates of at least 5 pli (875.7 Nm −1 ) as measured by ASTM C794 as modified;

thereby adhering the adhesive product to the low surface energy substrate and the structural substrate.

27. A method comprising:

i) applying a gunnable adhesive composition in a gap between a low surface energy substrate and a structural substrate, where the gunnable adhesive composition comprises

I) a component selected from a mixture and a reaction product, or a combination thereof of ingredients a) and b), where

ingredient a) is a silicone resin, which contains monofunctional units represented by R 1 3 SiO 1/2 and tetrafunctional units represented by SiO 4/2 , R 1 represents a substituted or unsubstituted monovalent hydrocarbon group and

ingredient b) is an organopolysiloxane comprising difunctional units of the formula R 2 R 3 SiO and terminal units of the formula R 4 a X 1 3-a SiG where R 2 is an alkoxy group or a monovalent unsubstituted or substituted hydrocarbon group; R 3 is a unsubstituted or substituted monovalent hydrocarbon group; R 4 is aminoalkyl or R 1 group; X 1 is a hydrolysable group; G is an oxygen atom or a divalent group linking the silicon atom of the terminal unit with another silicon atom and a is 0 or 1,

where the silicone resin and the organopolysiloxane are added in amounts to provide a ratio of the amount of silicone resin relative to the sum of the amounts of said resin in the organopolysiloxane (R/P ratio) ranging from 58% to 64%,

II) a filler,

III) a solvent,

optionally

IV) a silane crosslinker, and

optionally

V) a catalyst where the gunnable adhesive composition has

a slump ranging from 0 mm to 5 mm at a temperature ranging from 0° C. to 100° C. as measured by ASTM C639, and

an extrusion capability with a minimum of 10 mL/min as measured by ASTM C1183; and

ii) hardening the gunnable adhesive composition to form an adhesive product, where the adhesive product has

a movement capability per ASTM C719 ranging from +/−5% to +/−50%, and

a peak peel strength to low surface energy substrates and structural substrates of at least 5 pli (875.7 Nm −1 ) as measured by ASTM C794 as modified.

28. A method in accordance with claim 26 wherein the gunnable adhesive composition comprises:

a silane crosslinker.