Multi-layer polishing pad material for CMP
   
   

The invention is directed to a multi-layer polishing pad for chemical-mechanical polishing comprising a polishing layer and a bottom layer, wherein the polishing layer and bottom layer are joined together without the use of an adhesive. The invention is also directed to a polishing pad comprising an optically transmissive multi-layer polishing pad material, wherein the layers of the polishing pad material are joined together without the use of an adhesive.

 
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