Lightweight, durable plumbing fixture fabricated from a delamination-resistant multilayer polymeric composite
AssigneeAmerican Standard Inc.
InventorsPeter U. Graefe, Karl T. Kuszaj
Life of this patent
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Abstract
A light weight, durable plumbing fixture, e.g., a bathtub, sink, shower receptor, etc., is fabricated from a multilayer polymer composite structure of high impact strength and delamination resistance. The composite possesses a relatively thin polymeric cosmetic, or finish, layer, e.g., of acrylic resin, chemically bonded to a relatively thick, reinforced, cross-linked, isocyanate-modified thermosetting polyester or polyether dense foam resin substrate layer.
Claims17
A plumbing fixture constructed from a cured polymeric composite having good resistance to delamination which comprises:
- (a) a relatively thin polymeric cosmetic layer which, prior to the curing of a substrate layer in mutual contact therewith, possesses a chemically reactive first functionality on at least the surface thereof to be bonded to the substrate layer;
- and,
- (b) said substrate layer includes a relatively thick, reinforced, cross-linked isocynate-modified thermosetting unsaturated mixture of polyester and polyether dense foam resin which said substrate layer, prior to curing, possesses a chemically reactive second functionality such that upon curing while in mutual contact with a surface of the cosmetic layer, the substrate layer becomes bonded to the cosmetic layer through chemical linkages formed by reaction of said first and second functionalities.
A plumbing fixture constructed from a cured polymeric composite having good resistance to delamination which comprises:
- (a) a relatively thin cosmetic layer fabricated from an acrylic resin which, prior to the curing of a substrate layer in mutual contact therewith, possesses a free hydroxyl group-containing component on at least the surface thereof to be bonded to the substrate layer;
- and,
- (b) said substrate layer includes a relatively thick, reinforced, cross-linked, isocyanate-modified contacting thermosetting unsaturated mixture of polyester and polyether dense foam which said substrate layer prior to curing, possesses a free isocyanate group-containing component such that upon curing while in mutual contact with the cosmetic layer, the substrate layer becomes bonded to the cosmetic layer through urethane linkages formed by reaction of free hydroxyl groups of the cosmetic layer with free isocyanate groups of the substrate layer.
Dependencies are inferred from the claim text.