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RATE ENHANCED POLYMERIZATION PROCESSES

IP.com Disclosure Number: IPCOM000027306D
Original Publication Date: 1996-Feb-29
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 70K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a rate enhanced free radical moderated polymerization process for the preparation of thermoplastic resin or resins comprising: heating a mixture comprised of a free radical initiator, a stable free radical agent, at least one polymerizable monomer compound, and a sulfonic acid salt polymerization rate enhancing compound, to form a thermoplastic resin or resins with a high monomer to polymer conversion and a narrow polydispersity .

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XEROX DISCLOSURE JOURNAL

Proposed Classification

US. C1.430/110 Int. C1. G03g 09/097

RATE ENHANCED POLYMERIZATION PROCESSES Peter G. Ode11
Richard P.N. Veregin Y
Gordon K. Hamer
Michael K. Georges

Disclosed is a rate enhanced free radical moderated polymerization process for the preparation of thermoplastic resin or resins comprising: heating a mixture comprised of a free radical initiator, a stable free radical agent, at least one polymerizable monomer compound, and a sulfonic acid salt polymerization rate enhancing compound, to form a thermoplastic resin or resins with a high monomer to polymer conversion and a narrow polydispersity .

A preferred sulfonic acid salt rate enhancing compound is 2-fluoro-l- methylpyridinium p-toluenesulfonate of the formula ( I ) where OTs- is a toluene sulfonate ion.

F 0 tH3 0

The polymerization reactions were carried out in a 100 mL round bottom flask equipped with mechanical stirrer, condenser, and argon inlet/outlet at 125"C, and molecular weights were determined by GPC and conversions by TGA. The reactants, for example, styrene, benzoyl peroxide, TEMPO, and rate enhancing salt additive ( I ), produced a benzoyl peroxide (BPO) initiated, TEMPO terminated, polystyrene resin with narrow polydispersity and high monomer to polymer conversion in about 2 to 24 hours. In the absence of the rate enhancing compound, the polymerization required from about 50 to greater than 60 hours to achieve comparable conversion results.

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