Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Reexamination Certificate
2005-12-13
2005-12-13
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
C524S088000, C525S242000, C526S072000, C528S483000, C528S491000, C528S497000, C528S498000, C528S503000
Reexamination Certificate
active
06974858
ABSTRACT:
Provided herein is a process of fractionating ferroelectric, preferably vinylidene fluoride polymers using a solvent having at least one polarizable functional group, and a precipitant. The composition of the fractionated ferroelectric polymers is selected so as to adjust the properties of a ferroelectric film made from the polymers. Films formed using the fractionated vinylidene fluoride polymers have improved properties, particularly with respect to roughness and crystal domain size, and suitability for use in data processing devices.
REFERENCES:
patent: 2002/0161074 (2002-10-01), Zhang et al.
Bu Lujia
O'Connell Kathleen M.
Spear-Alfonso Kathleen B.
Szmanda Charles R.
Boykin Terressa
Corless Peter F.
Edwards & Angell LLP
Frickey Darryl P.
Rohm and Haas Electronic Materials LLC
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