Transketalized compositions, synthesis, and applications

Abstract

The present disclosure relates to the preparation of ketal compounds from polyols and oxocarboxylates, and uses thereof.

1 - 62 . (canceled) 
     
     
         63 . A compound comprising at least one repeat unit corresponding to structure IV: 
       
         
           
           
               
               
           
         
       
       wherein
 R 1  is a divalent linear, branched, or cyclic alkyl, a linear, branched, or cyclic alkenyl, alkynyl, aryl, or alkaryl moiety, wherein R 1  is the same or different for each occurrence; 
 R 2  is a covalent bond or a linear or branched alkyl group wherein R 2  is the same or different for each occurrence; 
 R 3  is hydrogen, a linear, branched, or cyclic alkyl wherein R 3  is the same or different for each occurrence; 
 R 4  is a covalent bond, methylene, or alkylmethylene, wherein a covalent bond indicates a 5-membered ring and a methylene or alkylmethylene indicates a 6-membered ring, wherein R 4  is the same or different for each occurrence; 
 R 5  is a covalent bond, methylene, ethylene, hydroxymethylene, —CH 2 —O—CH 2 —, or a polymeric moiety wherein R 5  is the same or different for each occurrence; 
 R 6  and R 7  are independently linear, branched, or cyclic alkyl groups; 
 R 8  and R 9  are independently hydrogen, a linear, branched, or cyclic alkyl, a linear, branched, or cyclic alkenyl, alkynyl, aryl, alkaryl, or a polymeric moiety; 
 Z and Z′ are independently O or NR where R is hydrogen or an alkyl group having between 1 and 6 carbon atoms; 
 α is an integer of at least 1 and defines a ketal unit, wherein α ketal units are disposed contiguously to R 5 , R 8 , R 9 , or a combination thereof; and 
 δ is an integer of at least 1. 
 
     
     
         64 . The compound of claim  69  wherein α is 1, all R 2  are —CH 2 CH 2 —, all R 3  are CH 3 —, R 8  and R 9  are hydrogen, and all R 4  and R 5  are covalent bonds. 
     
     
         65 . The compound of claim  69  wherein one or more Z or Z′ are NH and the compound is a polyamide, a copolyamide, or a poly(ester amide). 
     
     
         66 . The compound of claim  69  wherein all Z and Z′ are O and the compound further comprises ester, isocyanate, urethane, carbonate, polymerized allyl, polymerized epoxy, polymerized acrylate, or polymerized methacrylate groups or a combination of one or more thereof. 
     
     
         67 . The compound of claim  69  wherein R 6  and R 7  are chosen from the group consisting of methyl, ethyl, and isobutyl.