Patent ID: 11951591
Assignee: SK ENPULSE CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A polishing pad comprising a polishing layer having a value of 0.6 to 1 as calculated by the following Equation 1,
wherein the polishing layer has a value of 0.6 to 1 as calculated by the following Equation 2,
wherein the polishing layer comprises a cured product of a composition for producing a polishing layer containing a urethane-based prepolymer and a curing agent, and
wherein the curing agent is contained in an amount of 21 to 27 parts by weight based on 100 parts by weight of the urethane-based prepolymer:, 0.1
       H
      
      +
      
       0.3
       M
      
      +
      
       0.6
       E
      
     
     100
    
   
   
    
     [
     
      Equation
      ⁢
         
      1
     
     ], 0.1
       H
      
      +
      
       0.2
       M
      
      +
      
       0.7
       E
      
     
     100
    
   
   
    
     [
     
      Equation
      ⁢
         
      2
     
     ]
    
   
  
 

wherein:
H is a surface hardness (shore D) of a polishing surface of the polishing layer;
M is an elastic modulus (N/mm2) of the polishing layer; and
E is an elongation (%) of the polishing layer.