公开(公告)号：US20040086721A1

公开(公告)日：2004-05-06

申请号：US10619558

申请日：2003-07-16

Applicant: ATOFINA

Inventor： Anthony Bonnet ,  Francois Beaume ,  Karine Loyen ,  Karine Triballier ,  David Silagy

IPC: B32B027/00 ,  C08L027/12

CPC classification number: B32B27/30 ,  B32B27/08 ,  C08L27/16 ,  C08L33/08 ,  C08L33/12 ,  C08L51/003 ,  Y10T428/24975 ,  Y10T428/254 ,  Y10T428/3154 ,  Y10T428/31909 ,  Y10T428/31928 ,  Y10T428/31931 ,  Y10T428/31935 ,  C08L2666/02

Abstract: A composition coextrudable with PVDF comprises in parts by weight: 20 to 40 parts of 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 comprise a layer of the above coextrudable composition 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. 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. The resultant products are generally applied to substrates, e.g. as protective films.