Polyolefin-based adhesive resins

Abstract

A method for producing polyolefin-based adhesive resins having improved physical and optical properties and the improved adhesive-resins thereby produced, eliminates at least one reheating and melting of polyolefin polymer, comprises polymerizing a monomer composition of at least one olefin, mixing the polymerization product without pelletizing the polyolefin polymer with at least one graft polymer or copolymer in a heated mixing device at a temperature above the melting point of the components, and recovering the resulting polyolefin-based adhesive resin.

1 - 25 . (canceled)  
   
   
       26 . A polyolefin-based adhesive resin produced by the method comprising: 
 a. polymerizing a monomer composition of at least one olefin;    b. mixing with shear mixing, while minimizing cross-linking, at least 50% by weight based on the polyolefin-based adhesive resin of the polymerization product following polymerization without first pelletizing the polyolefin with at least one graft polymer or copolymer containing from about 0.1 to about 3% by weight of polar monomer in a heated mixing device at a temperature above the melting point of the components; and    c. recovering the resulting polyolefin-based adhesive resin.    
   
   
       27 . A polyolefin-based adhesive resin produced by the method comprising: 
 a. polymerizing a monomer composition selected from the group consisting of an olefin having from 2 to 8 carbon atoms, a mixture of an olefin having from 2 to 8 carbon atoms, with a second, different olefin having from 2 to 8 carbon atoms, a mixture of said olefin with at least one other unsaturated aliphatic hydrocarbon, a mixture of said olefin having from 2 to 8 carbon atoms with a second, different olefin having from 2 to 8 carbon atoms and at least one other unsaturated aliphatic hydrocarbon, a mixture of said olefin with at least one ethylenically unsaturated ester or acid, and mixtures thereof;    b. mixing with shear mixing, while minimizing cross-linking, at least 50% by weight based on the polyolefin-based adhesive resin of the polymerization product following polymerization without first pelletizing with at least one graft polymer or copolymer containing from about 0.1 to about 3% by weight of a polar monomer in a heated mixing device at a temperature above the melting point of the components; and    c. recovering the resulting polyolefin-based adhesive resin.    
   
   
       28 . A polyolefin-based adhesive resin produced according to by the method comprising: 
 a. polymerizing a monomer composition comprising a mixture of more than 50% by weight ethylene gas and less than 50% by weight butene gas;    b. mixing with shear mixing, while minimizing cross-linking, at least 50% by weight based on the polvolefin-based adhesive resin of the polymerization product following polymerization without first pelletizing with at least one graft polymer of at least one polymerizable ethylenically unsaturated carboxylic acid or acid derivative, wherein the at least one graft polymer contains from about 0.1 to about 3% bV weight of a polar monomer, in a heated mixing device at a temperature above the melting point of the components; and    c. recovering the resulting polyolefin-based adhesive resin.    
   
   
       29 . A structure comprising a substrate having the polyolefin-based adhesive of  claim 26  bonded to a side thereof.  
   
   
       30 . A structure comprising a substrate selected from the group consisting of polyolefins, polyamides, polyvinyl alcohol, ethylene vinyl alcohol copolymer, metals, glass, wood, and paper having the polyolefin-based adhesive resin of  claim 26  bonded to a side thereof.  
   
   
       31 - 32 . (canceled)  
   
   
       33 . A structure comprising a substrate having the polyolefin-based adhesive resin of  claim 27  bonded to a side thereof.  
   
   
       34 . A structure comprising a substrate selected from the group consisting of polyolefins, polyamides, polyvinyl alcohol, ethylene vinyl alcohol copolymer, metals, glass, wood, and paper having the polyolefin-based adhesive resin of  claim 27  bonded to a side thereof.  
   
   
       35 - 36 . (canceled)  
   
   
       37 . A structure comprising a substrate having the polyolefin-based adhesive resin to of  claim 28  bonded to a side thereof.  
   
   
       38 . A structure comprising a substrate selected from the group consisting of polyolefins, polyamides, polyvinyl alcohol, ethylene vinyl alcohol copolymer, metals, glass, wood, and paper having the polyolefin-based adhesive resin of  claim 28  bonded to a side thereof.  
   
   
       39 - 43 . (canceled)