# US 10,369,769 B2 · Vapor-permeable, substantially water-impermeable multilayer article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,769 B2 - Document ID: US10369769B2 - Status: Granted - Kind: B2 - Application number: 13/530,674 - Filed: 2012-06-22 - Published: 2012-12-27 - Granted: 2019-08-06 - Earliest claimed: 2011-06-23 - Assignees: Fiberweb, Inc. - Applicants: Mehdi Afshari - Inventors: Mehdi Afshari - Web page: https://patentgrep.com/patent/US10369769B2 ## CPC - B32B 27/12: next to a fibrous or filamentary layer - B32B 5/022: {Non-woven fabric} - B32B 5/24: one layer being a fibrous or filamentary layer - B32B 27/285: {comprising polyethers} - B32B 27/308: {comprising acrylic (co)polymers} - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - B32B 27/40: comprising polyurethanes - B32B 37/153: {at least one layer is extruded and immediately laminated while in semi-molten state} - B32B 2262/0253: Polyolefin fibres - B32B 2305/20: in the form of a non-woven mat - B32B 2307/7246: Water vapor barrier - B32B 2307/7265: Non-permeable - B32B 2419/00: Buildings or parts thereof - B32B 2419/06: Roofs, roof membranes - Y10T 442/676: Vinyl polymer or copolymer sheet or film [e.g., polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, etc.] - Y10T 442/678: Olefin polymer or copolymer sheet or film [e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.] - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract This disclosure relates to an article (e.g., a vapor-permeable, substantially water-impermeable multilayer article) that can include a nonwoven substrate and a film supported by the nonwoven substrate. The film can include a polyolefin grafted with an anhydride, an acid, or an acrylate. ## Claims ### Claim 1 An article comprising: a nonwoven substrate; and a film supported by the nonwoven substrate, the film comprising a mixture of: a first polymer that comprises a polyolefin grafted with an anhydride, an acid, or an acrylate selected to improve adhesion to the nonwoven substrate; a second polymer that is different from the first polymer, the second polymer being capable of absorbing and desorbing moisture and providing a barrier to aqueous fluids, the second polymer is selected from the group consisting of maleic anhydride block copolymers, glycidyl methacrylate block copolymers, polyether block copolymers, polyurethanes, polyethylene-containing ionomers, and mixtures thereof; wherein the second polymer comprises from 30% by weight to 35% by weight of the film; and from at least about 1% by weight to at most about 10% by weight of a polar compound, the polar compound comprises a polytheramine; wherein the film is a monolithic film. ### Claim 2 (depends on 1) The article of claim 1, wherein the first polymer comprises a polyethylene, a polypropylene, a poly(ethylene-co-vinyl acetate), or a poly(ethylene-co-acrylate). ### Claim 3 (depends on 1) The article of claim 1, wherein the first polymer comprises a low-density polyethylene grafted with an anhydride, a linear low-density polyethylene grafted with an anhydride, a high-density polyethylene grafted with an anhydride, a polypropylene grafted with an anhydride, a poly(ethylene-co-acrylate) grated with an anhydride or an acid, and a poly(ethylene-co-vinyl acetate) grafted with an anhydride, an acid, or an acrylate. ### Claim 4 (depends on 1) The article of claim 1, wherein the film comprises from about 1% by weight to about 20% by weight of the first polymer. ### Claim 5 (depends on 1) The article of claim 1, wherein the second polymer is selected from the group consisting of poly(olefin-co-acrylate-co-maleic anhydride), poly(olefin-co-acrylate-co-glycidyl methacrylate), polyether ester block copolymers, polyether amide block copolymers, poly(ether ester amide) block copolymers, and polyurethanes. ### Claim 6 (depends on 5) The article of claim 5, wherein the second polymer is selected from the group consisting of polyether ester block copolymers, poly(ethylene-co-acrylate-co-maleic anhydride), and poly(ethylene-co-acrylate-co-glycidyl methacrylate). ### Claim 7 (depends on 1) The article of claim 1, wherein the film further comprises a vinyl polymer. ### Claim 8 (depends on 7) The article of claim 7, wherein the vinyl polymer comprises a copolymer formed between a first comonomer and a second comonomer, the first comonomer comprises ethylene, and the second commoner comprises alkyl methacrylate, alkyl acrylate, or vinyl acetate. ### Claim 9 (depends on 8) The article of claim 8, wherein the vinyl polymer comprises a poly(ethylene-co-methyl acrylate), a poly(ethylene-co-vinyl acetate), a poly(ethylene-co-ethyl acrylate), or a poly(ethylene-co-butyl acrylate). ### Claim 10 (depends on 7) The article of claim 7, wherein the film comprises from about 20% by weight to about 50% by weight of the vinyl polymer. ### Claim 11 (depends on 1) The article of claim 1, wherein the nonwoven substrate comprises randomly disposed continuous polymeric fibers, at least some of the fibers being bonded to one another. ### Claim 12 (depends on 1) The article of claim 1, wherein the adhesion between the nonwoven substrate and the film is at least about 200 gram-force/in. ### Claim 13 (depends on 1) A construction material, comprising the article of claim 1. ### Claim 14 (depends on 13) The construction material of claim 13, wherein the construction material is a housewrap or a roofwrap. ### Claim 15 (depends on 1) The article of claim 1, wherein: the adhesion between the nonwoven substrate and the film is at least about 200 gram-force/in. ### Claim 16 (depends on 1) The article of claim 1, wherein the film comprises from about 1.5% by weight to at most about 3% by weight of the polar compound. ### Claim 17 (depends on 1) The article of claim 1, wherein the first polymer comprises a polyolefin grafted with an anhydride. ### Claim 18 (depends on 17) The article of claim 17, wherein the film comprises from about 1.5% by weight to at most about 3% by weight of the polar compound. ### Claim 19 (depends on 1) The article of claim 1, wherein the film comprises a first weight ratio between the first polymer to the polar compound comprising from about 5.6:1 to about 4:1, and wherein a sum of the first polymer, the second polymer, and the polar compound comprises from about 50 to 55% by weight of the film. ### Claim 20 (depends on 19) The article of claim 19, wherein the article has a moisture vapor transmission rate of at least about 8.5 perms. ### Claim 21 (depends on 1) An article of claim 1 further comprising an intermediate film comprising a third polymer comprising polyolefin grafted with an anhydride, an acid, or an acrylate selected to improve adhesion to the nonwoven substrate; wherein the third polymer is the same or different than the first polymer; and the intermediate film being between the nonwoven substrate and the monolithic breathable film; the intermediate film comprises an intermediate-film-thickness, the monolithic breathable film comprises a monolithic-breathable-film-thickness, and a ratio between the monolithic-breathable-film-thickness and the intermediate-film-thickness comprises from about 150:1 to about 50:1; wherein the article comprises a moisture vapor transmission rate from at least about 5 perms to about 20 perms. ### Claim 22 (depends on 21) The article of claim 21, wherein the third polymer comprises a polyethylene, a polypropylene, a poly(ethylene-co-vinyl acetate), or a poly(ethylene-co-acrylate). ### Claim 23 (depends on 21) The article of claim 21, wherein the third polymer comprises a low-density polyethylene grafted with an anhydride, a linear low-density polyethylene grafted with an anhydride, a high-density polyethylene grafted with an anhydride, a polypropylene grafted with an anhydride, a poly(ethylene-co-acrylate) grated with an anhydride or an acid, and a poly(ethylene-co-vinyl acetate) grafted with an anhydride, an acid, or an acrylate. ### Claim 24 (depends on 21) The article of claim 21, wherein the intermediate film comprises about 100% by weight of the third polymer. ### Claim 25 (depends on 21) The article of claim 21, wherein the second polymer is selected from the group consisting of poly(olefin-co-acrylate-co-maleic anhydride), poly(olefin-co-acrylate-co-glycidyl methacrylate), polyether ester block copolymers, polyether amide block copolymers, poly(ether ester amide) block copolymers, and polyurethanes. ### Claim 26 (depends on 25) The article of claim 25, wherein the second polymer is selected from the group consisting of polyether ester block copolymers, poly(ethylene-co-acrylate-co-maleic anhydride), and poly(ethylene-co-acrylate-co-glycidyl methacrylate). ### Claim 27 (depends on 21) The article of claim 21, wherein the monolithic breathable film further comprises a vinyl polymer. ### Claim 28 (depends on 27) The article of claim 27, wherein the vinyl polymer comprises a copolymer formed between a first comonomer and a second comonomer, the first comonomer comprises ethylene, and the second commoner comprises alkyl methacrylate, alkyl acrylate, or vinyl acetate. ### Claim 29 (depends on 28) The article of claim 28, wherein the vinyl polymer comprises a poly(ethylene-co-methyl acrylate), a poly(ethylene-co-vinyl acetate), a poly(ethylene-co-ethyl acrylate), or a poly(ethylene-co-butyl acrylate). ### Claim 30 (depends on 28) The article of claim 28, wherein the monolithic breathable film comprises from about 20% by weight to about 80% by weight of the vinyl polymer. ### Claim 31 (depends on 28) The article of claim 28, wherein the nonwoven substrate comprises randomly disposed continuous polymeric fibers, at least some of the fibers being bonded to one another. ### Claim 32 (depends on 21) The article of claim 21, wherein the article has a hydrostatic head of at least about 55 cm. ### Claim 33 (depends on 21) The article of claim 21, wherein the adhesion between the nonwoven substrate and the intermediate film is at least about 50 gram-force/in. ### Claim 34 (depends on 21) A construction material, comprising the article of claim 21. ### Claim 35 (depends on 34) The construction material of claim 34, wherein the construction material is a housewrap or a roofwrap. ### Claim 36 (depends on 21) The article of claim 21, wherein: the article has a hydrostatic head of at least about 55 cm; and the adhesion between the nonwoven substrate and the intermediate film is at least about 50 gram-force/in.