Polymerization process
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United States of America Patent
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Jan 29, 2019
Grant Date -
Aug 17, 2017
app pub date -
Aug 12, 2015
filing date -
Aug 14, 2014
priority date (Note) -
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Abstract
Provided is a method of forming a polymer, comprising (a) providing a reaction mixture comprising (i) one or more vinyl monomers, (ii) one or more pH-sensitive inhibition systems, (iii) one or more initiators, and (iv) water; (b) establishing conditions in said reaction mixture such that a free radical polymerization of said vinyl monomer occurs at a location, and (c) after steps (a) and (b) and prior to completion of said free radical polymerization, changing the pH of said reaction mixture to increase the rate of generation of said free radical polymerization at the location of said free radical polymerization.
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