Weatherable styrenic film structures with intermediate tie layer and laminates thereof
Patent 5334450 Issued on August 2, 1994. Estimated Expiration Date: 
May 20, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 20, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3173893 3368916 3473996 3804705 3860551 Method of producing polymer compositions based on chlorinated polyethylene Impact-resistant thermoplastic composition based on graft copolymer Film for heat sealing and process of heat sealing Film for heat sealing and process of heat sealing Polymer composition 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 polymerExaminersPrimary: Thibodeau, Paul J.Assistant: Abraham, David Foreign Patent References
International ClassB32B 027/08AbstractA 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.Field of SearchNext to addition polymer from unsaturated monomersEster, halide or nitrile of addition polymer Including polyene monomers (e.g., butadiene, etc.) Next to aldehyde or ketone condensation product PRODUCT WITH MOLECULAR ORIENTATION Of fluorinated addition polymer from unsaturated monomers Addition polymer is perhalogenated Absolute thicknesses specified Monoolefin polymer Next to second addition polymer from unsaturated monomers Including synthetic resin or polymer layer or component Up to 3 mils Physical dimension specified Transition metal other than Group VIII DNRM (i.e., Sc, Ti, Mn, Cu, Y, Zr, Tc, Hf, Re) 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, DNRM Nitrogen ring directly fused or bridged to a ring system From reactant-containing atom other than O, N, C, halogen, or hydrogen Solid polymer from oxygen heterocycle monomer Solid block or solid block-type copolymer with other solid polymer, SICP or SPFI From phenol, phenol ether, or inorganic phenolate monomer Removing material at reduced pressure, e.g., flashing, sublimation, spray drying, etc. Subsequent to assembly of laminae With permanent bending or reshaping or surface deformation of self sustaining lamina | |
