Patent US5270192A successfully refreshed from Google Patents.
Patent EP0035399A2 successfully refreshed from Google Patents.
EP0035399A2
Expired / Lapsed
EP
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Adhesives suitable for application to skin
Assignee: Smith and Nephew PLC
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Filing: 1981-03-02
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Granted: —
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Expires: 2001-03-02
Abstract
Abstract An adhesive polyacrylate which has a K value of 90 to 110 and contains 16% to 62% of n-butyl acrylate residues, 80% to 34% of 2-ethylhexyl acrylate residues and 4% to 10% acrylec acid residues, solutions thereof, surgical adhesive sheet materials coated therewith and their preparation are described.
Inventors
- 👤 Roger Francis Peck
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 21:55
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C08; C08L; C08L2666/00; C08L2666/28; C08L2666/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
36 words
An adhesive polyacrylate which has a K value of 90 to 110 and contains 16% to 62% of n-butyl acylate residues, 80% to 34% of 2-ethylhexyl acrylate residues and 4% to 10% of acrylic acid residues.
Claim 2
Dependent Claim
36 words
An adhesive polyacrylate which has a K value of 90 to 110 and contains 16% to 62% of n-butyl acylate residues, 80% to 34% of 2-ethylhexyl acrylate residues and 4% to 10% of acrylic acid residues.
Claim 3
Dependent Claim
33 words
An adhesive polyacrylate as claimed in claim 1 which contains 34% to 62% of n-butyl acrylate residues, 62% to 34% of 2 ethylhexyl acrylate resiues and 4% to 8% of acrylic acid residues.
Claim 4
Dependent Claim
32 words
An adhesive polyacrylate as claimed in claim 2 which contains 45% to 55% of n-butyl acrylate residues, 45% to 55% of 2-ethylhexyl acrylate residues and 5% to 7% of acrylic acid residues.
Claim 5
Dependent Claim
23 words
An adhesive polyacrylate as claimed in claim 3 which contains 47% n-butyl acrylate residues, 47% 2-ethylhexyl acrylate residues and 6% acrylic acid residues.
Claim 6
Dependent Claim
26 words
A solution in acetone or ethyl acetate of an adhesive polyacrylate as defined in claim 1 wherein the solution contains 20% to 45% of adhesive polyacrylate
Claim 7
Dependent Claim
26 words
A solution as claimed in claim 5 wherein the solvent is acetone and solution contains 30% to 40% of adhesive polyacrylate as defined in claim 3.
Claim 8
Dependent Claim
21 words
A surgical adhesive sheet material wherein the adhesive comprises an adhesive polyacrylate as defined in any of claims 1 to 4.
Claim 9
Dependent Claim
30 words
A moisture vapour transmitting sheet material as claimed in claim 7 in which the adhesive is a continuous coating of weight 15 g/m 2 to 240 g /m 2 .
Claim 10
Dependent Claim
23 words
A material as claimed in claim 8 wherein the moisture vapour transmission rate is not less than 300g/m2/24hrs/100% to 10% relative humidity difference.
Claim 11
Dependent Claim
57 words
A process for the preparation of an adhesive polyacrylate as defined in any of claims 1 to 4 which process comprises copolymerising a mixture of n-butyl acrylate, 2-ethylhexyl acrylate and acrylic acid in the proportions defined in any of claims 1 to 4 by free radical polymerisation in an organic solvent and thereafter optionally removing the solvent.
Claim 12
Dependent Claim
23 words
A process for the preparation of a material as claimed in claim 7 which process comprises applying an adhesive polyacrylate to a substrate.
References Cited (Backward Citations)
No citation records indexed.
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