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Title:
PROCESS FOR PURIFICATION OF VINYL ACETATE FOR USE IN POLYMERIZATION IN THE PRESENCE OF ETHYLENE
Document Type and Number:
WIPO Patent Application WO/2018/115961
Kind Code:
A3
Abstract:
Process for purification of unreacted vinyl acetate monomers comprising the steps of preliminarily loading an adsorbent agent bed with a mixture comprising an inert gas and fresh vinyl acetate; and feeding said adsorbent agent bed with unreacted vinyl acetate monomers to remove acetic acid.

Inventors:
POZZER DIHOGENES (BR)
JUNIOR OLAVO (BR)
LUCAS ALESSANDRA COELHO (BR)
FREYTAG IURI (BR)
Application Number:
PCT/IB2017/001679
Publication Date:
September 27, 2018
Filing Date:
December 19, 2017
Export Citation:
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Assignee:
BRASKEM SA (BR)
International Classes:
C07B61/00; C07C5/333; C07C11/04
Foreign References:
US20050215733A12005-09-29
US4379940A1983-04-12
US3080433A1963-03-05
US3509115A1970-04-28
US4091200A1978-05-23
US20110275852A12011-11-10
Other References:
DE LUCAS ET AL.: "Removal of Acetic Acid by Adsorption from an Ethylene Recycle Stream in the Ethylene-Vinyl Acetate Copolymerization Process", SEPARATION SCIENCE AND TECHNOLOGY, vol. 34, no. 3, 22 February 1999 (1999-02-22), pages 525 - 543, XP055539928
DE LUCAS ET AL.: "Removal of Acetic Acid by Absorption from Stream Recycle Ethylene in the Ethylene and Vinyl Acetate Copolymers Process", SEPARATION SCIENCE AND TECHNOLOGY, vol. 27, no. 10, 1992, pages 1197 - 1210
Attorney, Agent or Firm:
KASZNAR LEONARDOS PROPRIEDADE INTELECTUAL (BR)
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