Invention Grant
US08481606B2 Process for the production of polyester polyols with low volumes of dioxane waste
失效
用于生产低体积二恶烷废物的聚酯多元醇的方法
- Patent Title: Process for the production of polyester polyols with low volumes of dioxane waste
- Patent Title (中): 用于生产低体积二恶烷废物的聚酯多元醇的方法
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Application No.: US13127293Application Date: 2009-10-24
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Publication No.: US08481606B2Publication Date: 2013-07-09
- Inventor: Hartmut Nefzger , Erika Bauer , Johannes Van de Braak , Jürgen Schloβmacher
- Applicant: Hartmut Nefzger , Erika Bauer , Johannes Van de Braak , Jürgen Schloβmacher
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agent N. Denise Brown
- Priority: DE102008056147 20081106
- International Application: PCT/EP2009/007626 WO 20091024
- International Announcement: WO2010/051917 WO 20100514
- Main IPC: C08J9/04
- IPC: C08J9/04 ; C08G18/42 ; C07C69/003 ; C07C69/00 ; C07C67/08
Abstract:
The invention relates to the production and use of polyester polyols, formed from at least one carboxylic acid anhydride and ethylene glycol, wherein a specialized reaction control substantially suppresses the formation of 1,4-dioxane from diethylene glycol.
Public/Granted literature
- US20110237697A1 PROCESS FOR THE PRODUCTION OF POLYESTER POLYOLS WITH LOW VOLUMES OF DIOXANE WASTE Public/Granted day:2011-09-29
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