Composition coextrudable with pvdf

Details Composition coextrudable with pvdf Composition coextrudable with pvdf

C - Chemistry, Metallurgy

08

L

C08L 33/12 (2006.01) B29C 47/06 (2006.01) B32B 27/08 (2006.01) B32B 27/30 (2006.01) C08J 5/18 (2006.01) C08L 27/16 (2006.01) C08L 33/08 (2006.01) C08L 51/00 (2006.01)

Patent

CA 2435315

A composition coextrudable with PVDF and comprising: 20 to 40 parts to PVDF; 40 to 60 parts of PMMA; 5 to 18 parts of an acrylic elastomer; 1 to 4 parts of a UV absorber; the total making 100 parts. Coextruded films consisting of: a layer of the above coextrudable composition (also called adhesive layer) directly attached to the latter; and a PVDF-based layer comprising, as main constituents, 50 to 100 parts of PVDF per 50 to 0 parts of PMMA respectively (this layer is also called for simplification "PVDF layer"). The PVDF layer may be in the form of two layers: one placed against the coextrudable layer and comprising, as main constituents, 50 to 90 parts of PVDF per 50 to 10 parts of PMMA respectively; and the other (also called the outer layer) comprising, as main constituents, 75 to 100 parts of PVDF per 25 to 0 parts of PMMA respectively. Substrates coated with this film, the coextrudable (adhesive) composition may be placed against the substrate.

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