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AbstractA weatherable film for lamination to a non-weatherable substrate, including, for example a three-layer film structure including:at least one first surface layer of a weatherable polymer comprising (a) AES, ASA, SAN or mixtures thereof or (b) any of the polymers of (a) blended with PVC, CPE, aliphatic polyurethanes or saturated styrenic block copolymers; said layer having a 1 percent secant modulus of greater than about 150,000 psi;at least one second intermediate layer being a tie layer underlying the weatherable layer, said intermediate tie layer being adjacent to and adhered to the weatherable layer, said intermediate tie layer having a modulus of less than about 150,000 psi; said tie layer adherable to at least a third underlying layer; andat least one third layer underlying the tie layer, said third layer adjacent to and adhered to the tie layer said third layer having a modulus of less than about 150,000 psi. | InventorsApplicationNo. 886659 filed on 05/20/1992US Classes:428/332, Physical dimension specified156/79, Subsequent to assembly of laminae156/196, With permanent bending or reshaping or surface deformation of self sustaining lamina428/461, Next to addition polymer from unsaturated monomers428/462, Including polyene monomers (e.g., butadiene, etc.)428/463, Ester, halide or nitrile of addition polymer428/515, Next to second addition polymer from unsaturated monomers428/516Monoolefin polymerField of Search428/461, Next to addition polymer from unsaturated monomers428/463, Ester, halide or nitrile of addition polymer428/462, Including polyene monomers (e.g., butadiene, etc.)428/460, Next to aldehyde or ketone condensation product428/910, PRODUCT WITH MOLECULAR ORIENTATION428/421, Of fluorinated addition polymer from unsaturated monomers428/422, Addition polymer is perhalogenated428/215, Absolute thicknesses specified428/516, Monoolefin polymer428/515, Next to second addition polymer from unsaturated monomers428/339, Including synthetic resin or polymer layer or component428/335, Up to 3 mils428/332, Physical dimension specified524/413, Transition metal other than Group VIII DNRM (i.e., Sc, Ti, Mn, Cu, Y, Zr, Tc, Hf, Re)524/495, Mixing with carbon, e.g., graphite, etc., having numerical limitations, other than amount, e.g., included herein are particle size, surface area, etc., or composition or product thereof, DNRM524/87, Nitrogen ring directly fused or bridged to a ring system524/547, From reactant-containing atom other than O, N, C, halogen, or hydrogen524/517, Solid polymer from oxygen heterocycle monomer524/505, Solid block or solid block-type copolymer with other solid polymer, SICP or SPFI526/313, From phenol, phenol ether, or inorganic phenolate monomer523/340, Removing material at reduced pressure, e.g., flashing, sublimation, spray drying, etc.156/79, Subsequent to assembly of laminae156/196With permanent bending or reshaping or surface deformation of self sustaining laminaExaminersPrimary: Thibodeau, Paul 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Foreign Patent References
International ClassB32B 027/08 |