EP0417946A2
Expired / Lapsed
EP
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Polymeric film
Assignee: Imperial Chemical Industries Ltd
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Filing: 1990-08-31
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Granted: —
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Expires: 2010-08-31
Abstract
Abstract A flame-retardant film comprises a polymeric substrate having a receptive layer to which is bonded a retardant layer comprising a flame-retardant agent consisting essentially of a halogenated epoxy resin. A modifying layer, such as a slip coat or an adhesive barrier layer, is preferably applied to the retardant layer. The film exhibits improved adhesion to inks and photo-curable varnishes and is of utility in the electrical field.
Inventors
- 👤 Kelvin Patrick Adkins
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:00
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/38; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/036; C; C08; C08J; C08J7/00; C08J7/04; C08J7/043; C08J7/046; C08J7/05; C08J2463/00; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/012; H05K2203/00; H05K2203/12; H05K2203/122
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
A flame-retardant film comprising a polymeric substrate having a flame-retardant layer on a surface thereof characterised in that at least one surface of the substrate comprises a receptive layer and, on the at least one receptive layer, a retardant layer comprising a flame-retardant agent consisting essentially of a halogenated epoxy resin.
Claim 2
Dependent Claim
51 words
A flame-retardant film comprising a polymeric substrate having a flame-retardant layer on a surface thereof characterised in that at least one surface of the substrate comprises a receptive layer and, on the at least one receptive layer, a retardant layer comprising a flame-retardant agent consisting essentially of a halogenated epoxy resin.
Claim 3
Dependent Claim
19 words
A film according to claim 1 wherein the flame-retardant agent comprises a polymeric glycidyl ether of brominated bisphenol b.
Claim 4
Dependent Claim
18 words
A film according to either of claims 1 and 2 wherein the retardant layer comprises a polymeric wax.
Claim 5
Dependent Claim
19 words
A film according to any one of the preceding claims wherein the retardant layer comprises a compatible flex-promoting resin.
Claim 6
Dependent Claim
25 words
A film according to any one of the preceding claims wherein the receptive layer is formed by treatment with a medium comprising a halogenated phenol.
Claim 7
Dependent Claim
26 words
A film according to any one of the preceding claims additionally comprising a modifier layer on a surface of the flame-retardant layer remote from the substrate.
Claim 8
Dependent Claim
14 words
A film according to claim 6 wherein the modifier layer comprises a slip coat.
Claim 9
Dependent Claim
15 words
A film according to claim 6 wherein the modifier layer comprises an adhesion-promoting barrier layer.
Claim 10
Dependent Claim
21 words
A film according to claim 8 wherein the modifier layer comprises a blend of a cellulosic resin and an epoxy resin.
Claim 11
Independent Claim
47 words
A method of producing a flame-retardant film characterised by forming a polymeric substrate, treating at least one surface of the substrate to form a receptive layer thereon, and forming on the receptive layer a retardant layer comprising a flame-retardant agent consisting essentially of a halogenated epoxy resin.
Claim 12
Independent Claim
47 words
A method of producing a flame-retardant film characterised by forming a polymeric substrate, treating at least one surface of the substrate to form a receptive layer thereon, and forming on the receptive layer a retardant layer comprising a flame-retardant agent consisting essentially of a halogenated epoxy resin.
References Cited (Backward Citations)
No citation records indexed.
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