Bromination of Propargyl Methacrylate Polymers and Products Produced Thereby



The 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.


Attribute NameValues
  • Bromination of Propargyl Methacrylate Polymers and Products Produced Thereby

Patent Number
  • US 3562231 B2

  • Gaetano Francis D'Alelio

Inventor From Local Institution
  • Gaetano Frank D'Alelio

Other Application
  • 740,862

  • 9

Classification (US Patent)
  • 525/328.1; 525/356; 526/173; 526/285; 526/75; 560/225;

Cooperative Patent Classification codes
  • C08F 8/20 (20130101); C08F 8/20 (20130101); C08F 246/00 (20130101)

International Patent Classification codes
  • C08F 8/00 (20060101); C08F 8/20 (20060101)

  • eng

Date Issued
  • 1971-02-09

  • United States Patent and Trademark Office

  • Geigy Chemical Corporation

Record Visibility Public
Content License
Departments and Units
Member of


Collections Featuring this Patent
Notre Dame Patents


Please Note: You may encounter a delay before a download begins. Large or infrequently accessed files can take several minutes to retrieve from our archival storage system.