Invention Grant
- Patent Title: Processes for producing random polytrimethylene ether ester
- Patent Title (中): 制备无规聚三亚甲基醚酯的方法
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Application No.: US11950181Application Date: 2007-12-04
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Publication No.: US07645853B2Publication Date: 2010-01-12
- Inventor: Howard C. Ng , Hari Babu Sunkara
- Applicant: Howard C. Ng , Hari Babu Sunkara
- 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
- Agent Gail D. Tanzer
- Main IPC: C08G63/02
- IPC: C08G63/02 ; C08G61/00 ; C08G65/34 ; C07C41/09 ; C07C43/11
Abstract:
Processes for preparing random polytrimethylene ether ester are provided. The processes include contacting 1,3-propanediol with a suitable polymerization catalyst, wherein the 1,3-propanediol comprises about 10 microg/g or less peroxide compounds, based on the weight of 1,3-propanediol, and about 100 microg/g or less carbonyl compounds based on the weight of the 1,3-propanediol.
Public/Granted literature
- US20080177024A1 PROCESSES FOR PRODUCING RANDOM POLYTRIMETHYLENE ETHER ESTER Public/Granted day:2008-07-24
Information query
