Invention Grant
US08592623B2 Method for producing polyester polyols having low amounts of dioxane waste
有权
制备少量二恶烷废物的聚酯多元醇的方法
- Patent Title: Method for producing polyester polyols having low amounts of dioxane waste
- Patent Title (中): 制备少量二恶烷废物的聚酯多元醇的方法
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Application No.: US13127300Application Date: 2009-11-03
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Publication No.: US08592623B2Publication Date: 2013-11-26
- Inventor: Rolf Roers , Hartmut Nefzger , Erika Bauer , Johannes Van De Braak , Torsten Heinemann , Jürgen Schloβmacher
- Applicant: Rolf Roers , Hartmut Nefzger , Erika Bauer , Johannes Van De Braak , Torsten Heinemann , Jürgen Schloβmacher
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agent Robert S. Klemz; Lyndanne M. Whalen
- Priority: DE102008056148 20081106
- International Application: PCT/EP2009/007852 WO 20091103
- International Announcement: WO2010/051962 WO 20100514
- Main IPC: C08G63/20
- IPC: C08G63/20 ; C07C69/54
Abstract:
Polyester polyols are produced from at least one carboxylic acid hydride and diethylene glycol by a process in which the formation of 1,4-dioxane is suppressed. These polyester polyols are useful for producing polyurethane (PUR) and polyisocyanurate (PIR) foams and metal composite elements containing these PUR or PIR foams.
Public/Granted literature
- US20110236671A1 METHOD FOR PRODUCING POLYESTER POLYOLS HAVING LOW AMOUNTS OF DIOXANE WASTE Public/Granted day:2011-09-29
Information query
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