Dispersions containing living radicals

Details Dispersions containing living radicals Dispersions containing living radicals

2005-01-11

2005-01-11

Choi, Ling-Siu (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S089000, C526S227000, C526S219600, C526S348000, C526S201000, C526S217000, C526S922000

Reexamination Certificate

active

06841636

ABSTRACT:
The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.

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XP-002242651, Bo Wang, Yadunandan Dar, Linhuo Shi, Gerard T. Caneba; Polymerization Control Through the Free Radical Retrograde-Precipitation Polymerization Process, Journal of Applied Polymer Science, John Wiley and Sons Inc. New York, US , vol. 71, No. 5, 1999 pp. 761-774.

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