Patent ID: 11945977
Assignee: BOSTIK, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 1:
2. The hot melt adhesive composition of claim 1, wherein the at least one polymer includes a portion comprising aromatic groups, and wherein at least a first portion of the at least one PECPS is compatible with the portion comprising aromatic groups of the at least one polymer, wherein compatibility between the portion comprising aromatic groups of the at least one polymer and the first portion of PECPS is defined by blends of the first portion of PECPS and the at least one polymer at a range of ratios of 1:49 to 49:1 exhibiting glass transition temperatures that are each within 25° C. of the Tg of the mixture predicted by the Fox equation given below:, 1
    
      Tg
      mixture
    
  
  =
  
    
      
        ω
        PECPS
      
      
        Tg
        PECPS
      
    
    +
    
      
        ω
        
          polymer
          ⁢
          
            
          
          ⁢
          or
          ⁢
          
            
          
          ⁢
          polymer
          ⁢
          
            
          
          ⁢
          segment
        
      
      
        Tg
        
          polymer
          ⁢
          
            
          
          ⁢
          or
          ⁢
          
            
          
          ⁢
          polymer
          ⁢
          
            
          
          ⁢
          segment
        
      
    
  

wherein Tg refers to the glass transition temperature in Kelvin for the PECPS and polymer or polymer segment and ω refers to the mass ratio of the PECPS and polymer or polymer segment of block copolymer where the mass ratio values, ω, are calculated using the sum of mass of the PECPS and polymer or, in the case of block copolymers, the amount of polymer segment present.