The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2005
Filed:
Feb. 27, 2004
Lujia Bu, Shrewsbury, MA (US);
Charles R. Szmanda, Westborough, MA (US);
Kathleen B. Spear-alfonso, Hudson, MA (US);
Kathleen M. O'connell, Cumberland, RI (US);
Lujia Bu, Shrewsbury, MA (US);
Charles R. Szmanda, Westborough, MA (US);
Kathleen B. Spear-Alfonso, Hudson, MA (US);
Kathleen M. O'Connell, Cumberland, RI (US);
Rohm and Haas Electronic Materials LLC, Marlborough, MA (US);
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.