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Title:
MICROPOROUS MATERIALS WITH FIBRILLAR MESH STRUCTURE AND METHODS OF MAKING AND USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2012/174209
Kind Code:
A3
Abstract:
Microporous materials including a melt-processable, semi-crystalline, thermoplastic (co)polymer, wherein the thermoplastic (co)polymer is miscible in a compatible liquid when heated above a melting temperature of the semi-crystalline thermoplastic (co)polymer, further wherein the microporous material is comprised of a plurality of filaments substantially aligned in a first longitudinal direction, and a mesh extending laterally between the filaments, the mesh comprising a network of interconnected pores having a median diameter less than one micrometer. Methods of making and using such microporous materials (e.g. as films, membranes, battery separators, capacitor separators, fluid filtration articles, separation articles, and the like) are also described.

Inventors:
MROZINSKI JAMES S (US)
FREEMYER H TODD (US)
LIN KUAN-YIN (US)
Application Number:
PCT/US2012/042406
Publication Date:
May 10, 2013
Filing Date:
June 14, 2012
Export Citation:
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Assignee:
3M INNOVATIVE PROPERTIES CO (US)
MROZINSKI JAMES S (US)
FREEMYER H TODD (US)
LIN KUAN-YIN (US)
International Classes:
C08J9/00; B01D61/00; C08J5/18; C08J5/22; H01M50/403; H01M50/417; H01M50/426
Foreign References:
US6096213A2000-08-01
US20070196638A12007-08-23
US6632850B22003-10-14
US4726989A1988-02-23
US4867881A1989-09-19
Other References:
See also references of EP 2721097A4
Attorney, Agent or Firm:
BAKER, James, A. et al. (Office of Intellectual Property CounselP.O. Box 3342, Saint Paul MN, US)
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