Radially multi-branched polymer and porous film using the same

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

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Details

C525S472000, C528S230000, C528S247000, C528S265000, C528S271000, C528S397000

Reexamination Certificate

active

07910664

ABSTRACT:
Disclosed is a novel radially multi-branched polymer. The radially multi-branched polymer includes a central molecule to which side-branches are bonded in at least three positions and has an average molecular weight of 500 to 100,000, the side-branch being selected from the group consisting of a polyalkylene oxide, a polyacrylate, a polyester, a polyamide and derivatives thereof. The radially multi-branched polymer is used for manufacturing a low dielectric insulating film to provide a low dielectric insulating film having easily controllable micropores.

REFERENCES:
patent: 4351924 (1982-09-01), Andrews et al.
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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