# US 11,111,420 B2 · Waterborne bonding adhesive formulation for sheet membrane incorporating a solid plasticizer

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- Number: US 11,111,420 B2
- Document ID: US11111420B2
- Status: Granted
- Kind: B2
- Application number: 16/261,135
- Filed: 2019-01-29
- Published: 2019-08-01
- Granted: 2021-09-07
- Earliest claimed: 2018-01-30
- Assignees: Illinois Tool Works Inc.
- Applicants: Illinois Tool Works Inc.
- Inventors: Patrick Collins; Michael N. Atwater; Frederick P. Walnut; Keith D. Begin; Todd Pankey
- Web page: https://patentgrep.com/patent/US11111420B2

## CPC

- C09J 123/0853: {Vinylacetate}
- C08G 18/0819: {containing anionic or anionogenic groups}
- C08G 18/0823: {containing carboxylate salt groups or groups forming them}
- C08G 18/0828: {containing sulfonate groups or groups forming them}
- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J 131/04: Homopolymers or copolymers of vinyl acetate
- C09J 175/04: Polyurethanes
- B32B 2419/06: Roofs, roof membranes
- C08K 5/06: Ethers; Acetals; Ketals; Ortho-esters
- C08K 5/151: having one oxygen atom in the ring
- C08K 5/17: Amines; Quaternary ammonium compounds
- C08L 2205/03: containing three or more polymers in a blend
- C08L 2205/035: containing four or more polymers in a blend
- C09J 2301/414: presence of a copolymer
- C09J 2423/04: Presence of homo or copolymers of ethene
- C09J 2431/00: Presence of polyvinyl acetate
- C09J 2475/00: Presence of polyurethane
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

An adhesive formulation is provided that is a waterborne bonding adhesive for adhering sheet membranes that may incorporate a solid plasticizer. The formulation is fast-curing and develops bond strength rapidly after application to a substrate as the adhesive dries, when the sheet membrane is mated to the substrate. The fast-curing characteristic is important to ensure the membrane is not displaced from the surface in windy exterior applications. The adhesive is formulated to form the bond between sheet membranes to substrates that illustratively include, steel, wood, concrete, roof boards, insulation, and fiberglass mat roof boards.

## Claims

### Claim 1

A method of bonding a sheet membrane to an exterior substrate comprising:
applying an adhesive formulation to at least one of the sheet membrane or the exterior substrate while said adhesive formulation is wet, said adhesive formulation comprising:
a polyurethane dispersion (PUD);
(vinyl acetate/ethylene) copolymer (VAE);
an alkanolamine;
a tackifying resin;
an ether; and
water, wherein the formulation has a pH of from 7.0 to 12.5; and
bringing the sheet membrane and the exterior substrate into contact with said adhesive formulation therebetween during construction outdoors, while said adhesive formulation is wet, to bond simultaneously to the sheet membrane and the exterior substrate upon cure of said adhesive formulation, wherein said adhesive formulation builds strength as the water evaporates thereby facilitating adhesion of the sheet membrane to the exterior substrate, the exterior substrate being steel, wood, concrete, a roof board, insulation, or a fiberglass mat roof board.

### Claim 2 (depends on 1)

The method of claim 1 wherein the applying is by roller, brush, or spray.

### Claim 3 (depends on 1)

The method of claim 1 wherein the sheet membrane is plain-backed or fleece-backed.

### Claim 4 (depends on 1)

The method of claim 1 wherein the applying is to only one of the sheet membrane and the substrate, and the sheet membrane and the substrate are mated together and bonded immediately.