Radially multi-branched polymer and porous film using the same

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

Reexamination Certificate

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Details

C521S087000, C525S398000, C525S472000, C528S230000, C528S247000, C528S265000

Reexamination Certificate

active

10960040

ABSTRACT:
Described is a radially multi-branched polymer represented by the following formula (I): ABi (I), which includes a central molecule (A) to which side-branches (B) are bonded in at least three positions (i≧3). Also described are methods for preparing a multi-branched polymer as well as a porous insulating film including a multi-branched polymer.

REFERENCES:
patent: 5886110 (1999-03-01), Gozzini et al.
patent: 2151637 (1985-07-01), None
patent: 7-242722 (1995-09-01), None
patent: 10-2002-0080196 (2002-10-01), None
patent: WO-95/06081 (1995-03-01), None
patent: WO-99/21935 (1999-05-01), None
Nrita et al., “Living Polymerization of methyl methacrylate by novel samarium based trifunctional initiator”, Polymer Bulletin, 45, 231-36, 2000.

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