Patent EP0164766B1 successfully refreshed from Google Patents.
EP0164766B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Structures with multiple polymeric layers comprising a vinyl or vinylidene fluoride polymer layer bonded to a polar polymer layer
Assignee: Solvay SA
•
Filing: 1985-04-10
•
Granted: 1988-06-29
•
Expires: 2005-04-10
Abstract
Abstract Polymeric multilayer structures incorporating a layer made of vinyl fluoride or vinylidene fluoride polymer which is bonded to a polar polymer layer with the use of a vinyl acetate polymer. The polymeric multilayer structures may be in the form of films, sheets, plates, pipes or hollow bodies which can be employed in particular in the field of protection against corrosion or ultraviolet rays.
Inventors
- 👤 Pierre Decroly
- 👤 Claude Dehennau
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 06:51
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/304; B32B27/306; B32B7/00; B32B7/04; B32B7/12; B32B2327/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/3154; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/3158; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
Polymeric multilayer structures comprising a layer made of vinyl fluoride or vinylidene fluoride polymer which is bonded to a polar polymer layer, which are characterized in that the layer made of vinyl fluoride or vinylidene fluoride polymer is bonded to the polar polymer layer by means of a vinyl acetate polymer consisting of a binary copolymer of vinyl acetate and ethylene, containing from 60 to 90 % by weight of vinyl acetate.
Claim 2
Dependent Claim
72 words
Polymeric multilayer structures comprising a layer made of vinyl fluoride or vinylidene fluoride polymer which is bonded to a polar polymer layer, which are characterized in that the layer made of vinyl fluoride or vinylidene fluoride polymer is bonded to the polar polymer layer by means of a vinyl acetate polymer consisting of a binary copolymer of vinyl acetate and ethylene, containing from 60 to 90 % by weight of vinyl acetate.
Claim 3
Dependent Claim
34 words
Polymeric multilayer structures according to Claim 1, characterized in that the vinyl acetate polymer is a binary copolymer of vinyl acetate and ethylene containing from 70 to 85 % by weight of vinyl acetate.
Claim 4
Dependent Claim
24 words
Polymeric multilayer structures according to either of Claims 1 and 2, characterized in that the vinyl acetate polymer is coated with a thermoplastic polymer.
Claim 5
Dependent Claim
50 words
Polymeric multilayer structures according to Claim 3, characterized in that the thermoplastic coating polymer is chosen from vinyl fluoride and vinylidene fluoride polymers and vinyl chloride polymers and and in that it is present in a proportion of at most approximately 10 % by weight of the coated acetate polymer.
Claim 6
Dependent Claim
27 words
Polymeric multilayer structures according to any one of Claims 1 to 4, characterized in that the vinyl fluoride or vinylidene fluoride polymer is a vinylidene fluoride homopolymer.
Claim 7
Dependent Claim
27 words
Polymeric multilayer structures according to any one of Claims 1 to 4, characterized in that the vinyl fluoride or vinylidene fluoride polymer is a vinyl fluoride homopolymer.
Claim 8
Dependent Claim
45 words
Polymeric multilayer structures according to any one of Claims 1 to 6, characterized in that the polar polymer is chosen from polyvinyl chloride, vinylidene chloride copolymers, vinyl alcohol/ethylene copolymers, polyethylene terephthalate, polymethyl methacrylate, aromatic polycarbonates derived from bisphenol A, nylons 6 and 66 and polyurethanes.
Claim 9
Dependent Claim
36 words
Polymeric multilayer structures according to Claim 7, characterized in that the polar polymer is chosen from polyvinyl chloride, vinylidene chloride copolymers and vinyl alcohol/ethylene copolymers containing from approximately 15 to 35 % by weight of ethylene.
Claim 10
Dependent Claim
33 words
Polymeric multilayer structures according to any one of Claims 1 to 8, characterized in that they are produced by assembling by heat reactivation with the use of a solution of vinyl acetate polymer.
Claim 11
Dependent Claim
26 words
Polymeric multilayer structures according to any one of Claims 1 to 8, characterized in that they are produced by assembling using heat lamination, coextrusion or coextrusion-lining.
References Cited (Backward Citations)
EP0132583A2
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.