Invention Grant
- Patent Title: Process for purification of vinyl acetate for use in polymerization in the presence of ethylene
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Application No.: US16471201Application Date: 2017-12-19
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Publication No.: US11059770B2Publication Date: 2021-07-13
- Inventor: Dihogenes Adriano Pozzer , Olavo Martins Junior , Alessandra Coelho Silva Lucas , Iuri Freytag
- Applicant: Braskem S.A.
- Applicant Address: BR Camacari
- Assignee: Braskem S.A.
- Current Assignee: Braskem S.A.
- Current Assignee Address: BR Camacari
- Agency: Duane Morris LLP
- International Application: PCT/IB2017/001679 WO 20171219
- International Announcement: WO2018/115961 WO 20180628
- Main IPC: C07C67/56
- IPC: C07C67/56 ; C08F6/00 ; B01J20/34 ; C08F218/08 ; C07C69/15
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.
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