RU93010526A - METHOD FOR ISOLATION AND PURIFICATION OF 1,3-DIOXOLANE - Google Patents

METHOD FOR ISOLATION AND PURIFICATION OF 1,3-DIOXOLANE

Info

Publication number
RU93010526A
RU93010526A RU93010526/04A RU93010526A RU93010526A RU 93010526 A RU93010526 A RU 93010526A RU 93010526/04 A RU93010526/04 A RU 93010526/04A RU 93010526 A RU93010526 A RU 93010526A RU 93010526 A RU93010526 A RU 93010526A
Authority
RU
Russia
Prior art keywords
dioxolane
isolation
purification
ethylene glycol
increase
Prior art date
Application number
RU93010526/04A
Other languages
Russian (ru)
Other versions
RU2039054C1 (en
Inventor
А.Л. Балашов
С.М. Данов
Г.А. Чубаров
Т.А. Авдошина
Original Assignee
Нижегородский государственный технический университет
Filing date
Publication date
Application filed by Нижегородский государственный технический университет filed Critical Нижегородский государственный технический университет
Priority to RU93010526A priority Critical patent/RU2039054C1/en
Priority claimed from RU93010526A external-priority patent/RU2039054C1/en
Application granted granted Critical
Publication of RU2039054C1 publication Critical patent/RU2039054C1/en
Publication of RU93010526A publication Critical patent/RU93010526A/en

Links

Claims (1)

Изобретение относится к способам выделения и очистки 1,3-диоксолана из водных растворов, образующихся при взаимодействии этиленгликоля с формальдегидом (триоксан, параформ, формалин). С целью увеличения выхода, упрощения технологического процесса за счет исключения стадии щелочной промывки из процесса осушки 1,3-диоксолана и повышения экологической чистоты технологии разделение азеотропной смеси 1,3-диоксолан-вода проводят экстрактивной ректификацией с использованием в качестве экстрагента этиленгликоля. Предлагаемое изобретение может быть использовано для получения 1,3-диоксолана, применяющегося в производстве полимеров и сополимеров.The invention relates to methods for the isolation and purification of 1,3-dioxolane from aqueous solutions resulting from the interaction of ethylene glycol with formaldehyde (trioxane, paraform, formalin). In order to increase the yield, simplify the process by eliminating the alkaline washing step from the drying process of 1,3-dioxolane and increase the environmental cleanliness of the technology, the separation of the azeotropic 1,3-dioxolane-water mixture is carried out by extractive distillation using ethylene glycol as an extractant. The present invention can be used to obtain 1,3-dioxolane used in the manufacture of polymers and copolymers.
RU93010526A 1993-03-01 1993-03-01 Process for recovering and cleaning 1,3-dioxolanes RU2039054C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93010526A RU2039054C1 (en) 1993-03-01 1993-03-01 Process for recovering and cleaning 1,3-dioxolanes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93010526A RU2039054C1 (en) 1993-03-01 1993-03-01 Process for recovering and cleaning 1,3-dioxolanes

Publications (2)

Publication Number Publication Date
RU2039054C1 RU2039054C1 (en) 1995-07-09
RU93010526A true RU93010526A (en) 1997-01-10

Family

ID=20137905

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93010526A RU2039054C1 (en) 1993-03-01 1993-03-01 Process for recovering and cleaning 1,3-dioxolanes

Country Status (1)

Country Link
RU (1) RU2039054C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115260147A (en) * 2022-08-22 2022-11-01 凯瑞环保科技股份有限公司 Process device and method for synthesizing dioxolane by using extractive catalytic distillation

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