A process to prepare a cyclic oligomer and a cyclic oligomer obtainable thereby and a process to polymerize it
Номер патента: MY194932A
Опубликовано: 23-12-2022
Автор(ы): Giuseppe Storti, Jan-Georg Rosenboom, Liborio Ivano Costa, Massimo Morbidelli, Peter Joachim Fleckenstein
Принадлежит: SULZER MANAGEMENT AG
Опубликовано: 23-12-2022
Автор(ы): Giuseppe Storti, Jan-Georg Rosenboom, Liborio Ivano Costa, Massimo Morbidelli, Peter Joachim Fleckenstein
Принадлежит: SULZER MANAGEMENT AG
Реферат: A process to prepare a (iv) cyclic polyester oligomer composition comprising a cyclic polyester oligomer having furanic units and two to five repeat units is disclosed. The process comprises the steps of: (a) reacting a monomer composition comprising: (i) a bifunctional furan-derivative and (ii) a diol in an linear oligomerization step to produce a (iii) linear oligomer composition comprising a linear oligomer species, (b) reacting the (iii) linear oligomer composition in a distillation-assisted cyclization (DA-C) step to form a (iv) cyclic polyester oligomer composition and a (v) dial byproduct, wherein the (v) diol byproduct is removed by evaporation in the distillation- assisted cyclization (DA-C) step. (Fig. 9)
Method of producing a cyclic oligomer, a cyclic oligomer obtained by this method, as well as a method for polymerisation thereof
Номер патента: RU2767861C2. Автор: Либорио Ивано КОСТА,Петер Йоахим ФЛЕКЕНШТАЙН,Ян-Георг РОЗЕНБОМ,Джузеппе СТОРТИ,Массимо Морбиделли. Владелец: Зульцер Менеджмент Аг. Дата публикации: 2022-03-22.