Pelletized brominated anionic styrenic polymers and their...

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter

Reexamination Certificate

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C525S333300, C525S333400, C525S356000, C526S293000

Reexamination Certificate

active

08067088

ABSTRACT:
Despite the frangibility of additive-free granules of brominated anionic styrenic polymer, pellets of unadulterated brominated anionic styrenic polymer are provided having 50 wt % or more bromine content, in which 70 wt % or more of the pellets are retained on a US No. 40 sieve and no more than 30 wt % are retained on a US No. 5 sieve. These pellets contain no binding agent and they do not break apart or revert to small particles and finely divided powder, typically called “fines” when subjected to ordinary handling. More specifically, no more than about 5 wt %, preferably no more than about 3 wt %, and more preferably no more than about 1 wt % of these pellets as formed and packaged are fines or dusts that can pass through a US No. 40 sieve.

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