	US 11,667,750 B2
	Process for producing a bio-based polyethylene terephthalate (PET) polymer, entirely from bio-based materials
Jean-Francois Briois, Vittel (FR)
Assigned to Societe des Pruduits Nestle S.A., Vevey (CH)
Filed by SOCIÉTÉ DES PRODUITS NESTLÉ S.A., Vevey (CH)
Filed on Dec. 21, 2020, as Appl. No. 17/128,579.
Application 17/128,579 is a continuation of application No. 16/327,924, granted, now 10,899,876, previously published as PCT/EP2017/071635, filed on Aug. 29, 2017.
Claims priority of application No. 16186906 (EP), filed on Sep. 1, 2016.
Prior Publication US 2021/0108028 A1, Apr. 15, 2021
Int. Cl. C08G 63/183 (2006.01); C08G 63/78 (2006.01)

CPC C08G 63/183 (2013.01) [C08G 63/78 (2013.01)]

19 Claims

1. A process for producing a bio-based polyethylene terephthalate (PET) polymer from terephthalic acid obtained from at least one bio-based material, and at least one ethylene glycol compound obtained from at least one bio-based material, the process comprising:

polymerizing the terephthalic acid and the at least one ethylene glycol compound through an esterification reaction in the presence of isosorbide as a crystallization retarding compound to form the bio-based PET polymer,

wherein the isosorbide is obtained from at least one bio-based material.