Motor-vehicle top
AssigneeParat Beteiligungs GmbH
InventorChristian Kornexl
Life of this patent
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Abstract
The invention relates, among other aspects, to a motor-vehicle top (10) comprising a flexible cover layer (11) that provides an outer face of the top with a cutout provided therein, and at least one window is provided in the cutout, particularly a rear window (12), a circumferential edge region of the cover layer being connected to an outer window edge by a polyurethane bead (13), and wherein the polyurethane bead is synthesized by reacting an isocyanate component with a polyol component, the polyol component comprising at least the following constituents: a) polyols, herein polyetherols and/or polyesterols; b) a propellant; c) a lead-free catalyst.
Claims22
A method of making a flexibly configured motor-vehicle convertible top comprising a flexible cover layer forming an outer face of the convertible top and having a cutout that holds at least one window, a circumferential inner edge of the flexible cover layer around the cutout being connected to an outer window edge by a polyurethane bead that is synthesized in a polyaddition reaction by reacting an isocyanate component with a polyol component, comprising the steps of:
- a) providing a flexible cover layer with a cutout therein in a mold;
- b) providing at least one window in the cutout;
- c) incorporating a polyurethane sealing compound made of two components, namely an isocyanate component and a polyol component in the form of a polyether polyol or a polyester polyol, into the mold in an intermediate space between a circumferential edge region of the flexible cover layer and an outer window edge, wherein the polyol component comprises at least the following constituents:
- a) polyetherols or polyesterols;
- b) a propellant;
- c) a lead-free catalyst;
- d) reacting the two components in a polyaddition reaction at a temperature below 110° C. to form a polyurethane bead which provides a durable, mechanically secure and leak-proof connection between the circumferential edge region of the flexible cover layer and the at least one window;
- and
- e) removing the convertible top that was formed from the mold.
A flexibly configured motor-vehicle convertible top comprising a flexible cover layer forming an outer face of the convertible top and having a cutout that holds at least one window, a circumferential inner edge of the flexible cover layer around the cutout being connected to an outer window edge by a polyurethane bead that is synthesized in a polyaddition reaction by reacting an isocyanate component with a polyol component, the polyol component comprising at least the following constituents:
- a) a polyol in the form of a polyether polyol or a polyester polyol;
- b) a propellant;
- c) a lead-free catalyst, wherein the polyurethane bead provides a durable, mechanically secure and leak-proof connection between the circumferential edge region of the flexible cover layer and the at least one window;
- and
- d) pigments that produce the effect that the color of the synthesized polyurethane bead is approximately the corresponding color of the outer face of the convertible top, or matches it.
A flexibly configured motor-vehicle convertible top comprising a flexible cover layer forming an outer face of the convertible top and having a cutout that holds at least one window, a circumferential inner edge of the flexible cover layer around the cutout being connected to an outer window edge by a polyurethane bead that is synthesized in a polyaddition reaction by reacting an isocyanate component with a polyol component, the polyol component comprising at least the following constituents:
- a) a polyol in the form of a polyether polyol or a polyester polyol;
- b) a propellant;
- and
- c) a lead-free catalyst, wherein the polyurethane bead provides a durable, mechanically secure and leak-proof connection between the circumferential edge region of the flexible cover layer and the at least one window.
Dependencies are inferred from the claim text.