US4062451A
Expired / Lapsed
US
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Laminated structures comprising films of silane crosslinked acrylate interpolymers having water barrier properties
Assignee: Johnson and Johnson
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Filing: 1975-12-29
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Granted: 1977-12-13
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Expires: 1995-12-29
Abstract
Abstract Polymeric compositions having desirable film-forming characteristics and water-barrier properties at substantially neutral pH's and yet solubilizable and thus disposable at substantially non-neutral pH's comprise a silane crosslinked interpolymer of an alkyl acrylate and a monomer interpolymerizable therewith such as, in the preferred alkaline labile embodiment, acrylic acid. The silane crosslinking monomer is preferably 3-(trimethoxysilyl)-propyl methacrylate or 3-(trimethoxysilyl)-propyl acrylate. The resultant pH-sensitive polymeric compositions in film form, are laminated to other dispersible materials to produce a variety of products which are completely disposable at selected non-neutral pH's.
Inventors
- 👤 Robert J. Gander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/04; B32B21/08; A; A61; A61F; A61F5/00; A61F5/44; A61F5/4401; A61F13/00; A61F13/15; A61F13/15203; A61F13/15211; B32B27/00; B32B27/12; B32B3/00; B32B3/02; B32B3/04; B32B5/00; B32B5/22; B32B5/24; B32B5/28; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; A61F13/53; A61F13/534; A61F13/539; A61F2013/15008; A61F2013/15048; A61F2013/15227; A61F2013/530131; A61F2013/53445; A61F2013/5395; A61G; A61G9/00; A61G9/003; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2555/00; B32B2555/02; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/24; Y10T428/24777; Y10T428/26; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/675
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
261 words
A laminated structure comprising a film of a film-forming polymeric composition having water-barrier properties at neutral pH's in the range of between about 4.5 and about 8.5 and solubilizable at a pH substantially outside said neutral pH range, said composition comprising a silane-crosslinked interpolymer of about 0.5 to 5 parts by weight of a first monomer selected from the group consisting of the alkyl acrylates wherein the alkyl group has from one to eight carbon atoms, and about 1 part by weight of a second monomer selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, tert.-butylaminoethyl acrylate and tert.-butylaminoethyl methacrylate, and about 0.9 to 1.5% by weight, based on the combined weight of said first and second monomers, of a crosslinking monomer selected from the group consisting of the silane monomers having the structural formula: ##STR2## wherein: R is selected from the group consisting of CH 3 --, CH 3 CH 2 --, CH 3 CH 2 O--; R 1 and R 2 are each selected from the group consisting of CH 3 -- and CH 3 CH 2 --; R 3 is selected from the group consisting of H, CH 3 -- and CH 3 CH 2 --; and n is 0 or a positive integer not greater than 8; said film having a thickness in the range of about 1 to 20 mils and being laminated at least on one side of a water dispersible non-woven fiber web having low wet strength.
Claim 2
Dependent Claim
261 words
A laminated structure comprising a film of a film-forming polymeric composition having water-barrier properties at neutral pH's in the range of between about 4.5 and about 8.5 and solubilizable at a pH substantially outside said neutral pH range, said composition comprising a silane-crosslinked interpolymer of about 0.5 to 5 parts by weight of a first monomer selected from the group consisting of the alkyl acrylates wherein the alkyl group has from one to eight carbon atoms, and about 1 part by weight of a second monomer selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, tert.-butylaminoethyl acrylate and tert.-butylaminoethyl methacrylate, and about 0.9 to 1.5% by weight, based on the combined weight of said first and second monomers, of a crosslinking monomer selected from the group consisting of the silane monomers having the structural formula: ##STR2## wherein: R is selected from the group consisting of CH 3 --, CH 3 CH 2 --, CH 3 CH 2 O--; R 1 and R 2 are each selected from the group consisting of CH 3 -- and CH 3 CH 2 --; R 3 is selected from the group consisting of H, CH 3 -- and CH 3 CH 2 --; and n is 0 or a positive integer not greater than 8; said film having a thickness in the range of about 1 to 20 mils and being laminated at least on one side of a water dispersible non-woven fiber web having low wet strength.
Claim 3
Dependent Claim
29 words
The laminated structure of claim 1 wherein said first monomer is ethyl acrylate and said silane monomer is selected from the group consisting of 3-(trimethoxysilyl)-propyl methacrylate and 3-(trimethoxysilyl)-propyl acrylate.
Claim 4
Dependent Claim
30 words
The laminated structure of claim 2 wherein said second monomer is selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride and itaconic acid.
Claim 5
Dependent Claim
30 words
The laminated structure of claim 2 wherein said second monomer is selected from the group consisting of dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, tert.-butylaminoethyl acrylate and tert.-butylaminoethyl methacrylate.
Claim 6
Dependent Claim
13 words
The laminated structure of claim 3 wherein said second monomer is acrylic acid.
Claim 7
Dependent Claim
13 words
The laminated structure of claim 4 wherein said second monomer is dimethylaminoethyl methacrylate.
Claim 8
Dependent Claim
17 words
The laminated structure of claim 6 wherein said polymeric composition further comprises a tack-diminishing quantity of N-isopropylacrylamide.
Claim 9
Dependent Claim
29 words
The laminated structure of claim 1 wherein said polymeric composition further comprises about 1 to 20% by weight, based on the weight of said interpolymer, of a humectant-type plasticizer.
Claim 10
Dependent Claim
29 words
The laminated structure of claim 8 wherein said humectant-type plasticizer is selected from the group consisting of glycerin, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol and tripropylene glycol.
Claim 11
Dependent Claim
31 words
The laminated structure of claim 1 wherein said polymeric composition further comprises about 1 to 20% by weight, based on the weight of said interpolymer, of a plasticizer having release-agent properties.
Claim 12
Dependent Claim
23 words
The laminated structure of claim 10 wherein said plasticizer is selected from the group consisting of lauric acid, myristic acid and palmitic acid.
Claim 13
Dependent Claim
208 words
The laminated structure of claim 1 wherein said polymeric composition has water-barrier properties at pH's below about 8.5 and is solubilizable at pH's above about 9, said composition comprising a silane-crosslinked interpolymer of about 1.5 to 4 parts by weight of a first monomer selected from the group consisting of the alkyl acrylates wherein the alkyl group has from one to eight carbon atoms, and about 1 part by weight of a second monomer selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride and itaconic acid, and about 0.9 to 1.5% by weight, based on the combined weight of said first and second monomers, of a crosslinking monomer selected from the group consisting of the silane monomers having the structural formula: ##STR3## wherein: R is selected from the group consisting of CH 3 --, CH 3 CH 2 --, CH 3 O-- and CH 3 CH 2 O--; R 1 and R 2 are each selected from the group consisting of CH 3 -- and CH 3 CH 2 --; R 3 is selected from the group consisting of H, CH 3 -- and CH 3 CH 2 --; and n is 0 or a positive integer not greater than 8.
Claim 14
Dependent Claim
12 words
The laminated structure of claim 1 wherein said web comprises cellulosic fibers.
Claim 15
Dependent Claim
40 words
The laminated structure of claim 1 in the form of a vessel, for retaining fluids having neutral pH's in the range of about 4.5 to 8.5, the web portion of the structure being disposed on the exterior of said vessel.
Claim 16
Dependent Claim
271 words
The laminated structure of claim 1, further comprising, on the side of said film opposite said low wet strength web, and heat sealed at least to peripheral portions of said film, a moisture permeable, water-dispersible, non-woven fabric comprising a web of overlapping, intersecting fibers bonded together with a polymeric composition having water-barrier properties at neutral pH's in the range of between about 4.5 and about 8.5 and solubilizable at a pH substantially outside said neutral pH range, said composition comprising a silane-crosslinked interpolymer of about 0.5 to 5 parts by weight of a first monomer selected from the group consisting of the alkyl acrylates wherein the alkyl group has from one to eight carbon atoms, and about 1 part by weight of a second monomer selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, tert.-butylaminoethyl acrylate and tert.-butylaminoethyl methacrylate, and about 0.9 to 1.5% by weight, based on the combined weight of said first and second monomers, of a crosslinking monomer selected from the group consisting of the silane monomers having the structural formula: ##STR4## wherein: R is selected from the group consisting of CH 3 --, CH 3 CH 2 --, CH 3 O-- and CH 3 CH 2 O--; R 1 and R 2 are each selected from the group consisting of CH 3 -- and CH 3 CH 2 --; R 3 is selected from the group consisting of H, CH 3 -- and CH 3 CH 2 --; and n is 0 or a positive integer not greater than 8.
Claim 17
Dependent Claim
27 words
The laminated structure of claim 15 further comprising an absorbent matrix of non-woven fibers sandwiched between said film and said moisture permeable, water-dispersible, polymer bonded, non-woven fabric.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |