Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-01-18
2005-01-18
Zalukaeva, Tatyana (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S223000, C526S219600, C526S320000, C526S317100, C526S329000, C526S329700, C524S555000
Reexamination Certificate
active
06844406
ABSTRACT:
The present invention provides novel low molecular weight, high functionality number, polymers. The polymers may be made, for example, by heating (preferably, to a temperature of between about 130° C. and 180° C.) one or more ethylenically unsaturated monomers in the presence of a substantially aprotic solvent system; and maintaining the temperature for a time sufficient to polymerize the monomers to a preferred monomer to polymer conversion percentage of at least about 95 percent by weight. In a presently preferred embodiment, the polymer has a weight average molecular weight between about 900 and 7,000 Dalton and a functionality number of at least 100. The process is also preferably substantially free of chain transfer agents.
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Mallen Thomas R.
Mazza John H.
Niederst Jeffrey
Fish & Richardson P.C. P.A.
Valspar Sourcing Inc.
Zalukaeva Tatyana
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