Invention Grant
- Patent Title: Processes for producing polytrimethylene ether glycol and copolymers thereof
- Patent Title (中): 制备聚三亚甲基醚二醇的方法及其共聚物
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Application No.: US12971311Application Date: 2010-12-17
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Publication No.: US08344098B2Publication Date: 2013-01-01
- Inventor: Christian Hoffmann , Scott Christopher Jackson , Edward R. Murphy , Bhuma Rajagopalan
- Applicant: Christian Hoffmann , Scott Christopher Jackson , Edward R. Murphy , Bhuma Rajagopalan
- Applicant Address: US DE Wilmington
- Assignee: E I du Pont de Nemours and Company
- Current Assignee: E I du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C08G65/34
- IPC: C08G65/34
Abstract:
Processes for producing polytrimethylene ether glycol and copolymers thereof are provided wherein, by condensing and recycling at least a portion of the vapor phase produced as the reaction progresses, the yield loss and polymer color are reduced.
Public/Granted literature
- US20110152498A1 PROCESSES FOR PRODUCING POLYTRIMETHYLENE ETHER GLYCOL AND COPOLYMERS THEREOF Public/Granted day:2011-06-23
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