TRANSKETALIZED COMPOSITIONS, SYNTHESIS, AND APPLICATIONS
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.