D - Textiles – Paper – 06 – N
Patent
D - Textiles, Paper
06
N
117/126, 117/153
D06N 7/00 (2006.01) D06N 3/04 (2006.01)
Patent
CA 1264618
ABSTRACT A novel composite comprises a substrate having a coating matrix including an initial layer of a perfluoro- polymer and an overcoat comprising a fluoroelastomer, a fluoroplastic, a fluoroelastomer/fluoroplastic blend, or a combination thereof. The perfluoropolymer in the initial layer may be a perfluoroplastic, a perfluoroelastomer, or blends thereof. In a separate embodiment, the novel compo- site includes a substrate coated solely with one or more layers of perfluoroelastomer alone or as a blend with a per- fluoroplastic. Where the substrate is not susceptible to hydrogen fluoride corrosion, the composite may include solely one or more layers of a blend of a fluoroelastomer and a hydrogen-containing perfluoroplastic. Cross-linking accele- rators may be used to cross-link one or more of the resins contained in the coating layers. Each composite may be top- coated with a layer or layers of a fluoroplastic, fluoro- elastomer, and/or a blend thereof. The composite is flexible, exhibits good matrix cohesion and possesses substantial adhesion of the matrix to the material acting as the rein- forcement or substrate. A method for making such a com- posite comprises the unique deployment of a perfluoropolymer directly onto the substrate in a relatively small amount sufficient to protect the substrate from chemical corrosion without impairing flexibility, followed by the application of the overcoat layer.
452005
Effenberger John A.
Keese Frank M.
Chemfab Corporation
G. Ronald Bell & Associates
LandOfFree
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