Patent ID: 11873372
Assignee: SK MICROWORKS CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 5:
6. The polyamide-imide film of claim 1, which has a modulus (MO1b) at room temperature of 5 GPa or more and a dMO value defined in the following Equation 1b of 1% to 8%:, dMO
          ⁢
          
            
          
          ⁢
          
            (
            %
            )
          
        
        =
        
          
            
              
              
                
                  MO
                  ⁢
                  
                    
                  
                  ⁢
                  2
                  ⁢
                  b
                
                -
                
                  MO
                  ⁢
                  
                    
                  
                  ⁢
                  1
                  ⁢
                  b
                
              
              
            
            
              MO
              ⁢
              
                
              
              ⁢
              1
              ⁢
              b
            
          
          ×
          100
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          1
          ⁢
          b
        
        ]
      
    
  

in Equation 1b, MO1b refers to the modulus of the film at room temperature, and MO2b refers to the modulus of the film measured at −20° C.