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Bromination of Propargyl Methacrylate Polymers and Products Produced Thereby
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posted on 2016-06-07, 00:00 authored by Gaetano Francis D'AlelioThe process disclosed herein is the bromination of polymers of propargyl methacrylate and the brominated products produced thereby. Propargyl methacrylate has a terminal acetylenic group which upon bromination gives anethylenic dibromo derivative which is hydrolytically stable. In comparison the derivative obtained upon dibromination of a polymer of allyl methacrylate gives dibromopropyl methacrylate repeating units whereas the dibromonation of propargyl methacrylate gives dibromoallyl methacrylate repeating units. In view of the ethylenic group in the dibromoallyl radical, the bromine atoms are very resistant to hydrolysis whereas the bromine in the dibromopropyl radical is much more susceptible to hydrolysis. Moreover, the bromination of a terminal acetylenic group proceeds with much greater facility and more thoroughly under milder conditions than is the case when the acetylenic group is a non-terminal acetylenic such as 2-butyn-1-yl acrylate or methacrylate.
History
Patent Number
US 3562231 B2Other Application
740,862Inventor
Gaetano Francis D'AlelioInventor from Local Institution
Gaetano Frank D'AlelioAssignee
Geigy Chemical CorporationDate Modified
2016-06-07Language
- English
Claims
9Publisher
United States Patent and Trademark OfficeCooperative Patent Classification Codes
C08F 8/20 (20130101); C08F 8/20 (20130101); C08F 246/00 (20130101)Contributor
Gaetano Frank D'AlelioInternational Patent Classification Codes
C08F 8/00 (20060101); C08F 8/20 (20060101)US Patent Classification Codes
525/328.1; 525/356; 526/173; 526/285; 526/75; 560/225;Usage metrics
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