Oxathiazaphospholidine free radical control agent

Details Oxathiazaphospholidine free radical control agent Oxathiazaphospholidine free radical control agent

2005-01-18

2008-03-18

Shiao, Rei-tsang (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

Reexamination Certificate

active

07345186

ABSTRACT:
This invention discloses a process for producing a polymer by controlled polymerization which comprises polymerizing at least one monomer in the presence of a free radical controi agent of the stxuctural formula: (Z)-(R1)n, wherein n represents an integer from 1 to about 6; wherein Z represents an aromatic or aliphatic moiety containing from 1 to about 20 carbon atoms; wherein R1represents a moiety of the structural formula:wherein R2represents a moiety selected from the group consisting of alkyl groups, alkenyl groups, alkynyl groups, aryl groups. heteroaryl groups, and alkaryl groups; wherein the alky groups, alkenyl groups, alkynyl groups, aryl groups, heteroaryl groups, and alkaryl groups can be substituted, unsubstituted, linear, branched or cyclic; and wherein Ar represents a p-alkoxyphenyl group having an alkoxy moiety that contains from 1 to 8 carbon atoms.

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Bonnet et al,Macromol. Rapid Commun., 2004, 25, 873-877.
Dubau-Assibat et al, J. Org. Chem, 1995, 60, 3904-3906.

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