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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 8999867 B1

PDFFull Text
Date of Patent:
Apr. 07, 2015

Filed:

Jan. 19, 2011

Melt blown fiber

Applicants:

Henk Van Paridon, Averbode, BE;

Bert Broeders, Beringen, BE;

Wilhelmus Henricus Adolf Sars, Tilburg, NL;

Joachim Fiebig, St. Marien, AT;

Nina Ackermans, Tessenderlo, BE;

Inventors:

Henk Van Paridon, Averbode, BE;

Bert Broeders, Beringen, BE;

Wilhelmus henricus Adolf Sars, Tilburg, NL;

Joachim Fiebig, St. Marien, AT;

Nina Ackermans, Tessenderlo, BE;

Assignee:

Borealis AG, Vienna, AT;

Attorney:

Warn Partners, P.C.

Primary Examiner:

Jeremy R Pierce

Int. Cl.
CPC ...
D04H 1/56 (2006.01); D04H 3/00 (2012.01); D02G 3/00 (2006.01); D01D 5/08 (2006.01); D01F 6/30 (2006.01); D01D 5/098 (2006.01); D04H 3/007 (2012.01); D04H 3/16 (2006.01); C08F 210/06 (2006.01);
U.S. Cl.
CPC ...
D01F 6/30 (2013.01); D01D 5/0985 (2013.01); D04H 1/56 (2013.01); D04H 3/007 (2013.01); D04H 3/16 (2013.01); C08F 210/06 (2013.01);
Abstract

Melt-blown fiber having an average diameter of not more than 5.0 μm, said fiber comprises at least 85 wt.-% of a propylene copolymer, wherein •said melt blown fiber and/or said propylene copolymer has/have a melt flow rate MFR(230° C.) measured according to ISO 1133 of at least 200 g/10 min, •said propylene copolymer has a comonomer content of 0.5 to 5.5 wt.-%, the comonmers are ethylene and/or at least one Cto Cα-olefin selected from the group consisting of 1-butene, 1-pentene, 1-hexene, 1-heptene, and 1-octene, •the propylene copolymer has <2,1> regiodefects of not more than 0.4 mol.-% determined byC-spectroscopy, and •said melt blown fiber and/or said propylene copolymer fulfill(s) the equation (1). wherein Tm [° C.] is the melting temperature [given in ° C.] of melt blown fiber said and/or of said propylene copolymer measured according to ISO 11357-3, C2 [wt %] is the amount [given in weight percentage] of comonomers within said melt blown fiber and/or within said propylene copolymer determined with Fourier transform infrared spectroscopy (FTIR).

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