Abstract: A chemical mechanical polishing pad is provided having a polishing layer; and an endpoint detection window incorporated into the chemical mechanical polishing pad, wherein the endpoint detection window is a plug in place window; wherein the endpoint detection window comprises a reaction product of ingredients, comprising: a window prepolymer, and, a window curative system, comprising: at least 5 wt % of a window difunctional curative; at least 5 wt % of a window amine initiated polyol curative; and, 25 to 90 wt % of a window high molecular weight polyol curative.

Abstract: A chemical mechanical polishing pad is provided containing: a polishing layer; a plug in place endpoint detection window block; a rigid layer; and, a hot melt adhesive bonding the polishing layer to the rigid layer; wherein the polishing layer comprises the reaction product of ingredients, including: a polyfunctional isocyanate; and, a curative package; wherein the curative package contains an amine initiated polyol curative and a high molecular weight polyol curative; wherein the polishing layer exhibits a density of greater than 0.6 g/cm3; a Shore D hardness of 5 to 40; an elongation to break of 100 to 450%; and, a cut rate of 25 to 150 ?m/hr; and, wherein the polishing layer has a polishing surface adapted for polishing the substrate. Also provide are methods of making and using the chemical mechanical polishing pad.

Abstract: A multilayer chemical mechanical polishing pad stack is provided containing: a polishing layer; a rigid layer; and, a hot melt adhesive bonding the polishing layer to the rigid layer; wherein the polishing layer exhibits a density of greater than 0.6 g/cm3; a Shore D hardness of 5 to 40; an elongation to break of 100 to 450%; and, a cut rate of 25 to 150 ?m/hr; and, wherein the polishing layer has a polishing surface adapted for polishing the substrate.

Abstract: A chemical mechanical polishing pad stack is provided containing: a polishing layer; a rigid layer; and, a hot melt adhesive bonding the polishing layer to the rigid layer; wherein the polishing layer comprises the reaction product of ingredients, including: a polyfunctional isocyanate; and, a curative package; wherein the curative package contains an amine initiated polyol curative and a high molecular weight polyol curative; wherein the polishing layer exhibits a density of greater than 0.6 g/cm3; a Shore D hardness of 5 to 40; an elongation to break of 100 to 450%; and, a cut rate of 25 to 150 ?m/hr; and, wherein the polishing layer has a polishing surface adapted for polishing the substrate.

Abstract: A chemical mechanical polishing pad is provided having a polishing layer; and an endpoint detection window incorporated into the chemical mechanical polishing pad, wherein the endpoint detection window is a plug in place window; wherein the endpoint detection window comprises a reaction product of ingredients, comprising: a window prepolymer, and, a window curative system, comprising: at least 5 wt % of a window difunctional curative; at least 5 wt % of a window amine initiated polyol curative; and, 25 to 90 wt % of a window high molecular weight polyol curative.

Abstract: A method of chemical mechanical polishing a substrate is provided, including: providing a substrate; providing a chemical mechanical polishing pad, comprising: a polishing layer having a composition and a polishing surface, wherein the composition of polishing layer is selected to exhibit an initial hydrolytic stability; coupled with a sustained hydrolytic instability; a rigid layer having a top surface and a bottom surface; a hot melt adhesive interposed between the base surface of the polishing layer and the top surface of the rigid layer; wherein the hot melt adhesive bonds the polishing layer to the rigid layer; a pressure sensitive platen adhesive layer having a stack side and a platen side; wherein the stack side of the pressure sensitive platen adhesive layer is adjacent to the bottom surface of the rigid layer; and, creating dynamic contact between the polishing surface and substrate to polish a surface of the substrate.

Abstract: A chemical mechanical polishing pad is provided having a polishing layer; and a window incorporated into the polishing layer; wherein the polishing layer comprises a reaction product of ingredients, including: a polishing layer prepolymer and a polishing layer curative system; wherein the polishing layer curative system includes a polishing layer amine initiated polyol curative, a polishing layer high molecular weight polyol curative and a polishing layer difunctional curative; and, wherein the window comprises a reaction product of ingredients, including: a window prepolymer and a window curative system; wherein the window curative system includes a window difunctional curative, a window amine initiated polyol curative and a window high molecular weight polyol curative; and, wherein the polishing layer exhibits a density of ?0.6 g/cm3; a Shore D hardness of 5 to 40; an elongation to break of 100 to 450%; and, a cut rate of 25 to 150 ?m/hr.

Abstract: A method of chemical mechanical polishing a substrate is provided, including: providing a substrate; providing a chemical mechanical polishing pad, comprising: a polishing layer having a composition and a polishing surface, wherein the composition of polishing layer is selected to exhibit an initial hydrolytic stability; coupled with a sustained hydrolytic instability; a rigid layer having a top surface and a bottom surface; a hot melt adhesive interposed between the base surface of the polishing layer and the top surface of the rigid layer; wherein the hot melt adhesive bonds the polishing layer to the rigid layer; a pressure sensitive platen adhesive layer having a stack side and a platen side; wherein the stack side of the pressure sensitive platen adhesive layer is adjacent to the bottom surface of the rigid layer; and, creating dynamic contact between the polishing surface and substrate to polish a surface of the substrate.

Abstract: A chemical mechanical polishing pad is provided containing: a polishing layer; a rigid layer; and, a hot melt adhesive bonding the polishing layer to the rigid layer; wherein the polishing layer exhibits a specific gravity of greater than 0.6; a Shore D hardness of 60 to 90; an elongation to break of 100 to 300%; and, a unique combination of an initial hydrolytic stability and a sustained hydrolytic instability.

Abstract: A multilayer chemical mechanical polishing pad stack is provided containing: a polishing layer; a rigid layer; and, a hot melt adhesive bonding the polishing layer to the rigid layer; wherein the polishing layer exhibits a density of greater than 0.6 g/cm3; a Shore D hardness of 5 to 40; an elongation to break of 100 to 450%; and, a cut rate of 25 to 150 ?m/hr; and, wherein the polishing layer has a polishing surface adapted for polishing the substrate.

Abstract: A chemical mechanical polishing pad is provided containing: a polishing layer; a plug in place endpoint detection window block; a rigid layer; and, a hot melt adhesive bonding the polishing layer to the rigid layer; wherein the polishing layer comprises the reaction product of ingredients, including: a polyfunctional isocyanate; and, a curative package; wherein the curative package contains an amine initiated polyol curative and a high molecular weight polyol curative; wherein the polishing layer exhibits a density of greater than 0.6 g/cm3; a Shore D hardness of 5 to 40; an elongation to break of 100 to 450%; and, a cut rate of 25 to 150 ?m/hr; and, wherein the polishing layer has a polishing surface adapted for polishing the substrate. Also provide are methods of making and using the chemical mechanical polishing pad.

Abstract: A chemical mechanical polishing pad stack is provided containing: a polishing layer; a rigid layer; and, a hot melt adhesive bonding the polishing layer to the rigid layer; wherein the polishing layer comprises the reaction product of ingredients, including: a polyfunctional isocyanate; and, a curative package; wherein the curative package contains an amine initiated polyol curative and a high molecular weight polyol curative; wherein the polishing layer exhibits a density of greater than 0.6 g/cm3; a Shore D hardness of 5 to 40; an elongation to break of 100 to 450%; and, a cut rate of 25 to 150 ?m/hr; and, wherein the polishing layer has a polishing surface adapted for polishing the substrate.