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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.:

US 10240013 B1

PDFFull Text
Date of Patent:
Mar. 26, 2019

Filed:

Dec. 14, 2009

Microporous material from ethylene-chlorotrifluoroethylene copolymer and method for making same

Applicants:

James S. Mrozinski, Oakdale, MN (US);

Randall P. Swenson, River Falls, WI (US);

Karl-dieter Weilandt, Woodbury, MN (US);

Jonathan F. Hester, Hudson, WI (US);

Inventors:

James S. Mrozinski, Oakdale, MN (US);

Randall P. Swenson, River Falls, WI (US);

Karl-Dieter Weilandt, Woodbury, MN (US);

Jonathan F. Hester, Hudson, WI (US);

Assignee:

3M INNOVATIVE PROPERTIES COMPANY, Saint Paul, MN (US);

Attorney:

Gregory D. Allen

Primary Examiner:

David Browe

Int. Cl.
CPC ...
A01N 25/08 (2006.01); C08J 5/18 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 71/76 (2006.01); B29C 67/20 (2006.01); B32B 5/18 (2006.01); B32B 5/02 (2006.01); B32B 15/08 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); B29C 47/00 (2006.01); B01D 71/26 (2006.01); B01D 71/32 (2006.01); B29C 47/88 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B01D 67/002 (2013.01); B01D 69/02 (2013.01); B01D 71/76 (2013.01); B29C 47/0021 (2013.01); B29C 67/20 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 5/026 (2013.01); B32B 5/18 (2013.01); B32B 15/08 (2013.01); B32B 27/065 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 27/322 (2013.01); B01D 71/26 (2013.01); B01D 71/32 (2013.01); B01D 2323/42 (2013.01); B01D 2325/02 (2013.01); B01D 2325/48 (2013.01); B29C 47/8845 (2013.01); B29C 47/8895 (2013.01); B32B 2250/04 (2013.01); B32B 2255/26 (2013.01); B32B 2307/21 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/518 (2013.01); B32B 2307/704 (2013.01); B32B 2307/7145 (2013.01); B32B 2307/734 (2013.01); B32B 2457/10 (2013.01); C08J 2327/02 (2013.01); C08J 2327/04 (2013.01); C08J 2327/12 (2013.01); Y10T 428/249978 (2015.04); Y10T 442/3366 (2015.04); Y10T 442/469 (2015.04); Y10T 442/652 (2015.04);
Abstract

Microporous material having a spherulitic matrix made from ethylene chlorotrifluoroethylene copolymer has a plurality of pores having an average pore size greater than about 0.01 micrometer. The material is made by thermally induced phase separation (TIPS) process that includes melt mixing ethylene chlorotrifluoroethylene copolymer, diluent and nucleating agent to provide a melt mixed composition; shaping the melt mixed composition; cooling the shaped melt mixed composition to induce phase separation of the ethylene chlorotrifluoroethylene copolymer to provide a phase separated material; and stretching the phase separated material to provide the microporous material. The microporous material may be incorporated into articles and the articles may include one, two or more layers of microporous material.

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