Dispersions containing living radicals

Details Dispersions containing living radicals Dispersions containing living radicals

2008-05-20

2008-05-20

Choi, Ling-Sui (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S220000, C526S219000, C526S219600, C526S227000

Reexamination Certificate

active

07375175

ABSTRACT:
A dispersion of polymer particles, the particle containing, on average, one or more living radicals each, the radicals not being chemically protected. Further disclosed is 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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Wang, B. et al.: 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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