COMPOSITION, METHOD OF USE, AND STRUCTURAL BARRIER SYSTEM

• US 20110072747A1
• Filed: 04/29/2010
• Published: 03/31/2011
• Est. Priority Date: 12/06/2007
• Status: Active Grant

• Current Assignee: Building Envelope Innovations, LLC
• Original Assignee: Building Envelope Innovations, LLC
• Inventors: Tatley, Ronald D., Schneider, Thomas J.
• Granted Patent: US 8,413,387 B2
• Time in Patent Office: Days
• US Class Current: 52/309.1
• CPC Class Codes: C08K 3/26 Carbonates; Bicarbonates
• CPC Class Codes: C08K 5/57 Organo-tin compounds
• CPC Class Codes: C09D 171/00 Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain based on polyacetals C09D159/00; based on epoxy resins C09D163/00; based on polythioether-ethers C09D181/02; based on polyethersulfones C09D181/06; Coating compositions based on derivatives of such polymers
• CPC Class Codes: E04G 21/14 Conveying or assembling building elements roofing E04D; finishing work E04F
• CPC Class Codes: E06B 1/56 Fastening frames to the border of openings or to similar contiguous frames E06B1/003 takes precedence
• CPC Class Codes: E06B 1/62 Tightening or covering joints between the border of openings and the frame or between contiguous framesE06B1/34 takes precedence
• CPC Class Codes: E06B 2001/628 Separate flexible joint covering strips; Flashings

Abstract

An environmental barrier composition and method of use for forming a structural barrier system to seal structural openings such as doors and windows is provided. The composition includes a liquid rosin that is silyl-terminated polyether, a filler material, and a curing catalyst. The method includes applying the composition to a prepared through-hole in combination with flashing material at least along a bottom surface of the through-hole and installation of a window or door into the prepared through-hole to form a barrier system in which a continuous film can be easily inspected, is waterproof, meet air barrier requirements of ASTM E2178, has elastomeric properties, allows substrate expansion, contraction, and movement, does not shrink or lose volume as it cures, and cures rapidly with sufficient adhesion to transition flashing to incorporate into a designed drainage plane and allow integration of a continuous air barrier system where the barrier is at least semi-vapor-permeable.

Claims

1. A coating composition comprising:

a liquid resin;

a filler material;

a curing catalyst, wherein the liquid resin is a silyl-terminated polyether.

2. The coating composition of claim 1 wherein the silyl-terminated polyether is polypropylene oxide capped at respective termini by a silyl group represented by:

—

SiR¹_t(OR²)_3-t, wherein, t is 0, 1 or 2, R¹ and R² are the same or different and independently an alkyl group.

3. The coating composition of claim 2 wherein the silyl group is dimethoxymethylsilyl.

4. The coating composition of claim 1 wherein the filler material is calcium carbonate.

5. The coating composition of claim 1 wherein the curing catalyst is an organotin compound.

6. The coating composition of claim 1, further comprising one or more light stabilizers.

7. The coating composition of claim 6 wherein the one or more light stabilizers are hydroxyphenylbenzotriazole, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, or a combination thereof

8. The coating composition of claim 1, further comprising an adhesion promoter.

9. The coating composition of claim 8 wherein the adhesion promoter is an alkoxysilane.

10. The coating composition of claim 1, further comprising a dehydrator.

11. The coating composition of claim 10 wherein the dehydrator is vinyltrimethoxysilane.

12. The coating composition of claim 1, further comprising a plasticizer.

13. The coating composition of claim 12 wherein the plasticizer is diisodecyl phthalate.

14. The coating composition of claim 1, further comprising one or more pigments.

15-16. -16. (canceled)

17. A method of forming a structural barrier system for a through-hole in a wall, comprising:

applying a liquid flashing membrane material to a prepared surface, the material comprising a liquid rosin, a filler material, and a curing catalyst, wherein the liquid rosin is a silyl-terminated polyether; and

applying a sheet of flashing to a selected area in the through-hole and at least partially on the liquid-applied flashing material.

18. The method of claim 17, further comprising installing a window or door unit in the through-hole after the material has cured.

19. A structural barrier system, comprising:

a liquid-applied flashing membrane applied to a through-hole formed in a structural member, the liquid-applied flashing material comprising a liquid rosin, a filler material, and a curing catalyst, wherein the liquid rosin is a silyl-terminated polyether;

a sheet of flashing applied partially over the material and to a bottom surface of the through-hole and to extend horizontally on each side of the through-hole on exterior sheathing; and

a window or door unit applied to the through-hole over the flashing and the cured liquid-applied flashing material.

20. The system of claim 19 wherein the liquid-applied flashing material is approximately 12 mil thickness.

21. The system of claim 20 wherein the liquid-applied flashing material comprises a red iron oxide pigment of sufficient amount to make the liquid-applied flashing material transparent until approximately 12 mil thickness after which it becomes opaque, regardless of its cured or uncured state.