Patent ID: 9725558
Date: 2017-08-08
CPC Classifications: C08G

Claim:
1. A process to prepare a cyclic polyester oligomer composition comprising a cyclic polyester oligomer having furanic units, wherein the process comprises: a step of either: (I) reacting a monomer component C 1 or D 1 in the presence of an optional catalyst and/or optional organic base in a ring closing oligomerization step under conditions of a reaction temperature and reaction time sufficient to yield a cyclic polyester oligomer having furanic units and of structure Y 1 , wherein the monomer component C 1 comprises the structure and wherein each of the groups A is an optionally-substituted linear, branched or cyclic alkyl, phenyl, aryl, or alkylaryl, and wherein l is an integer from 1 to 100, and wherein R R=optionally substituted linear, branched or cyclic alkyl, phenyl, aryl or alkylaryl, R wherein the monomer component D and wherein A is an optionally-substituted linear, branched or cyclic alkyl, phenyl, aryl, or alkylaryl, and wherein each of the groups X is an OH, a halogen, or an optionally-substituted alkyloxy, phenoxy, or aryloxy, and wherein the groups X are not OH when A is n-butyl, and wherein the structure Y wherein m is an integer from 1 to 20, OR (II) reacting a monomer component C 2 or D 2 in the presence of an optional catalyst and/or optional organic base in a ring closing oligomerization step under conditions of a reaction temperature and reaction time sufficient to yield a cyclic polyester oligomer having furanic units and of structure Y 2 , wherein the monomer component C 2 comprises the structure and wherein each of the groups B is an optionally-substituted linear, branched or cyclic alkyl, phenyl, aryl, or alkylaryl, wherein l is an integer as defined above, and wherein n′ is an integer from 1 to 20, and wherein R R=optionally substituted linear, branched or cyclic alkyl, phenyl, aryl or alkylaryl, R the monomer component D and wherein each of the groups X is an OH, a halogen, or an optionally-substituted alkyloxy, phenoxy, or aryloxy, each of the groups B is an optionally-substituted linear, branched or cyclic alkyl, phenyl, aryl, or alkylaryl, and n′ is an integer as defined above, and wherein the structure Y wherein each of the groups B is an optionally-substituted linear, branched or cyclic alkyl, phenyl, aryl, or alkylaryl, n′ is an integer as defined above, and m is an integer from 1 to 20, AND