# US 12,006,692 B2 · Fully-adhered roof system adhered and seamed with a common adhesive

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- Number: US 12,006,692 B2
- Document ID: US12006692B2
- Status: Granted
- Kind: B2
- Application number: 18/192,567
- Filed: 2023-03-29
- Published: 2023-07-27
- Granted: 2024-06-11
- Earliest claimed: 2016-03-25
- Assignees: Holcim Technology Ltd
- Applicants: Holcim Technology Ltd
- Inventors: Jiansheng Tang; Michael J. Hubbard; Joseph Kalwara; Carl E. Watkins, Jr.; Brian Alexander; Todd D. Taykowski; Joseph R. Carr
- Web page: https://patentgrep.com/patent/US12006692B2

## CPC

- B32B 25/04: comprising rubber as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/043; next to a bituminous or tarry layer B32B11/044; next to a water setting substance layer B32B13/042; next to a metal layer B32B15/06; next to a glass layer B32B17/063; next to a layer formed of natural mineral fibres or particles B32B19/043; next to a wood layer B32B21/045; next to a cellulosic plastic layer B32B23/046)}
- E04D 5/148: {fastening by gluing}
- B32B 3/04: characterised by {at least one} layer folded at the edge, e.g. over another layer {; characterised by at least one layer enveloping or enclosing a material}
- B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12}
- B32B 5/022: {Non-woven fabric}
- B32B 5/028: {Net structure, e.g. spaced apart filaments bonded at the crossing points}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 7/05: the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection (using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14)
- B32B 7/06: permitting easy separation
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 13/12: of synthetic resin
- B32B 13/14: next to a fibrous or filamentary layer
- B32B 15/082: comprising vinyl resins; comprising acrylic resins
- B32B 15/085: comprising polyolefins
- B32B 15/14: next to a fibrous or filamentary layer
- B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)}
- B32B 19/04: next to another layer of {the same or of} a {different material (next to a glass layer B32B17/067)}
- B32B 19/041: {of metal}
- B32B 19/042: {of wood}
- B32B 19/045: {of synthetic resin}
- B32B 19/046: {of paper or cardboard}
- B32B 19/06: next to a fibrous or filamentary layer
- B32B 21/08: of synthetic resin
- B32B 21/10: Next to a fibrous or filamentary layer
- B32B 25/042: {of natural rubber or synthetic rubber}
- B32B 25/08: of synthetic resin
- B32B 25/14: comprising {synthetic rubber copolymers (B32B25/18 and B32B25/20 take precedence)}
- B32B 27/08: of synthetic resin
- B32B 27/10: of paper or cardboard
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/30: comprising vinyl {(co)polymers; comprising acrylic (co)polymers}
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- B32B 27/36: comprising polyesters
- B32B 29/02: next to a fibrous or filamentary layer
- B32B 37/12: characterised by using adhesives
- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J 7/203: {characterised by the structure of the release feature on the carrier layer}
- C09J 7/22: Plastics; Metallised plastics
- C09J 7/29: Laminated material (metallised plastics C09J7/22)
- C09J 7/385: {Acrylic polymers}
- C09J 7/403: {characterised by the structure of the release feature}
- C09J 133/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof
- E04D 5/06: by making use of plastics
- E04D 5/10: by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
- E04D 5/142: {along the edge of the flexible material}
- B32B 2037/1253: {curable adhesive}
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/12: on paper layer
- B32B 2255/20: Inorganic coating
- B32B 2255/26: Polymeric coating
- B32B 2307/542: Shear strength
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/732: Dimensional properties
- B32B 2307/738: Thermoformability
- B32B 2307/748: Releasability
- B32B 2419/06: Roofs, roof membranes
- C09J 2203/346: for building applications e.g. wrap foil
- C09J 2301/122: the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
- C09J 2301/302: the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
- C09J 2301/414: presence of a copolymer
- C09J 2423/166: in the substrate
- C09J 2433/00: Presence of (meth)acrylic polymer
- Y02B 10/20: Solar thermal
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- E04D: ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F13/00)
- 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)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

A roof system comprising a roof substrate, a first membrane including first and second opposed planar surfaces, and a second membrane including opposed first and second planar surfaces, where said second membrane is adhered to said roof substrate through an adhesive disposed on said roof-substrate contacting portion of the first membrane, and where said second membrane is adhered to said first membrane through said adhesive disposed on a lap portion of said second membrane.

## Claims

### Claim 1

A roofing membrane composite comprising:
(i) a roofing membrane panel having opposed first and second planar surfaces and first and second lateral edges, said first planar surface including a roof-substrate contacting portion and a lap portion adjacent to one of said first and second lateral edges;
(ii) a layer of UV-cured pressure-sensitive adhesive disposed on said roof-substrate contacting portion and said lap portion, where the layer of UV-cured pressure-sensitive adhesive is disposed on the entirety of the roof-substrate contacting portion from the first lateral edge to the second lateral edge, the UV-cured pressure-sensitive adhesive including a UV-cured polyacrylate having a gel content, as determined by THF extraction after boiling in THF after four hours, of at least 50% by weight, and where the polyacrylate, prior to UV curing, has a Tg of less than −20° C. and a number average molecular weight of from about 100 to about 350 kg/mol, and where the degree of cure of said UV-cured pressure-sensitive adhesive varies by no more than 10% between said roof-substrate contacting portion and said lap portion; and
(iii) a release member removable affixed to said UV-cured adhesive in both said roof-substrate contacting portion and said lap portion, where said UV-cured adhesive disposed on said roof-substrate portion and said lap portion is substantially homogeneous.

### Claim 2 (depends on 1)

The membrane of claim 1, where said release member includes a perforation that allows said release member to be divided between said roof-substrate contacting portion and said lap portion.

### Claim 3 (depends on 1)

The membrane of claim 1, where the degree of cure of said UV-cured adhesive varies by no more than 1% between said roof-substrate contacting portion and said lap portion.

### Claim 4 (depends on 1)

The membrane of claim 1, where the UV-cured adhesive is a UV-cured polyacrylate, and where said UV-cured polyacrylate, prior to being cured, includes one or more units defined by the formula:
where each R1 is individually hydrogen or a hydrocarbyl group and each R2 is individually a hydrocarbyl group.

### Claim 5 (depends on 1)

The method of claim 1, where the layer of UV-cured pressure-sensitive adhesive includes a UV-cured polyacrylate having a gel content, as determined by THF extraction after boiling in THF after four hours, of at least 60% by weight.

### Claim 6 (depends on 1)

The method of claim 1, where the layer of UV-cured pressure-sensitive adhesive includes a UV-cured polyacrylate having a gel content, as determined by THF extraction after boiling in THF after four hours, of from about 50% to about 90%.

### Claim 7 (depends on 1)

The method of claim 1, where the layer of UV-cured pressure-sensitive adhesive includes a UV-cured polyacrylate having a gel content, as determined by THF extraction after boiling in THF after four hours, of from about 60% to about 80%.

### Claim 8 (depends on 1)

The method of claim 1, where the layer of UV-cured pressure-sensitive adhesive is characterized by a peel strength when adhered to the adjacent membrane, as determined by ASTM D-1876-08, of at least 3.6 lbf/in.

### Claim 9 (depends on 1)

The method of claim 1, where the layer of UV-cured pressure-sensitive adhesive is characterized by a peel strength when adhered to the adjacent membrane, as determined by ASTM D-1876-08, of at least 8.0 lbf/in.

### Claim 10 (depends on 1)

The method of claim 1, where the layer of UV-cured pressure-sensitive adhesive is characterized by a peel strength when adhered to the adjacent membrane, as determined by ASTM D-1876-08, of at least 15 lbf/in.

### Claim 11 (depends on 1)

The method of claim 1, where the roofing membrane panel is a thermoplastic membrane panel.

### Claim 12 (depends on 1)

The method of claim 1, where the roofing membrane panel is an EPDM membrane panel.