Polymerization with living characteristics

Details Polymerization with living characteristics Polymerization with living characteristics

Filed on

2007-05-25

Date issued

2010-02-23

Examiner

Lipman, Bernard (Department: 1796)

Patent Class

Synthetic resins or natural rubbers -- part of the class 520 ser

SubClass

Synthetic resins

SubSubClass

Polymers from only ethylenic monomers or processes of...

Other Related Categories

C526S213000, C526S215000, C526S216000, C526S219000, C526S220000, C526S222000

Type

Reexamination Certificate

Status

active

Patent number

07666962

Description

ABSTRACT:
This invention concerns a free radical polymerization process, selected chain transfer agents employed in the process and polymers made thereby, in which the process comprises preparing polymer of general Formula (A) and Formula (B) comprising contacting: (i) a monomer selected from the group consisting of vinyl monomers (of structure CH2=CUV), maleic anhydride, N-alkylmaleimide, N-arylmaleimide, dialkyl fumarate and cyclopolymerizable monomers; (ii) a thiocarbonylthio compound selected from Formula (C) and Formula (D) having a chain transfer constant greater than about 0.1; and (iii) free radicals produced from a free radical source; the polymer of Formula (A) being made by contacting (i), (ii) C and (iii) and that of Formula (B) by contacting (i), (ii) D, and (iii); and (iv) controlling the polydispersity of the polymer being formed by varying the ratio of the number of molecules of (ii) to the number of molecules of (iii); wherein Q, R, U, V, Z, Z′, m, p and q am as defined in the text.

REFERENCES:
patent: 2396997 (1946-03-01), Fryling
patent: 0348166 (1989-12-01), None
patent: 04198303 (1992-07-01), None
patent: WO 92/13903 (1992-08-01), None
patent: WO 93/22351 (1993-11-01), None
patent: WO 93/22355 (1993-11-01), None
patent: WO 96/15157 (1996-05-01), None
Quirk & Lee (Polymer International) 27, 359 (1992).
Moad et al., Comprehensive Polymer Science, Pergamon, London, Wvol. 3, p. 141 (1989).
Greszta et al., Macromolecules 27, 638 (1994).
Rizzardo et al., Macromol Symp. 98, 101 (1995).
Cacioli et al., Copolymerization of ω-Unsaturated Oligo(Methyl) Methacrylate): New Macromonomers, J. Macromol Sci-Chem A23, 839 (1986).
Moad & Solomon, The Chemistry of Free Radical Polymerization, Pergamon, London 1995, pp. 53-95.
Greenley, Polymer Handbook 3rdEdition, Wiley, NY 1989 p. ll/53.
Muller et al., Macromolecules 1995, 28, 4326.
Jensen et al., Acta Chem. Scand., 15, 1087-1096 (1961).
O'Driscoll et al., Eur. Polym. J. 25(7/8) 829 (1989).
Szwarc, Living Polymers and Mechanisms of Anionic Polymerization, 1983.
Moebius et al., Beschleuniger fur Cyanacryliatklebstoffe, Plaste Und Kautschuk, vol. 39, No. 4, 1994, pp. 122-123—XP002046219.
Delfanne et al., Polythioamide and Poly(1,3,4-thiadiazole) Synthesis from Dimethyl Tetrathioterephthalate Macromolecules, vol. 22, 1989, pp. 2589-2592—XP002046220.
Chemical Abstracts 116: 130 869—XP002046221, 1994.

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