Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2008-01-29
2008-01-29
Lipman, Bernard (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S314000, C526S204000, C526S217000, C526S220000, C526S328000, C526S328500, C526S329200, C526S329300, C526S346000
Reexamination Certificate
active
07323517
ABSTRACT:
The present invention relates to a composition and process for enhancing the controlled radical polymerization in the presence of nitroxyls and nitroxylethers by adding a chain transfer agent selected from the group consisting of mercaptanes, thioethers and disulfides to the polymerizable mixture. A further subject of the invention is the use of mercaptanes, thioethers and disulfides for increasing rate and yield of controlled radical polymerizations in the presence of a nitroxyl or a nitroxylether.
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Pfaendner Rudolf
Wunderlich Wiebke
Ciba Specialty Chemicals Corp
Lipman Bernard
Stevenson Tyler A.
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