公开(公告)号：US20230025875A1

公开(公告)日：2023-01-26

申请号：US17780545

申请日：2020-12-03

申请人： BOREALIS AG

发明人： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Joachim Fiebig ,  Henk Van Paridon ,  Wilhelmus Sars ,  Gustaf Tobieson

IPC分类号： D04H3/16 ,  D04H3/007 ,  C08F110/06

摘要： The present invention relates to melt-blown webs having no shots and improved barrier properties, whereby the melt-blown webs are made of a visbroken metallocene-catalyzed propylene homopolymer composition with specified melting temperature Tm, content of 2,1 erythro regiodefects and molecular weight distribution (MWD).

公开(公告)号：US20240301602A1

公开(公告)日：2024-09-12

申请号：US18260506

申请日：2022-01-21

申请人： BOREALIS AG

发明人： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Joachim Fiebig ,  Henk Van Paridon ,  Wilhelmus Sars ,  Gustaf Tobieson ,  Pauli Leskinen

IPC分类号： D04H3/16 ,  B01D39/16 ,  C08F110/06 ,  C08K5/098 ,  C08K5/20 ,  D01F1/10 ,  D01F6/06 ,  D04H1/4291 ,  D06M10/00 ,  D06M101/20

CPC分类号： D04H3/16 ,  B01D39/1623 ,  C08F110/06 ,  C08K5/098 ,  C08K5/20 ,  D01F1/10 ,  D01F6/06 ,  D04H1/4291 ,  D06M10/00 ,  B01D2239/0435 ,  B01D2239/0622 ,  B01D2239/10 ,  C08F2420/10 ,  C08F2810/10 ,  C08K2201/014 ,  D06M2101/20 ,  D06M2200/00 ,  D10B2321/022 ,  D10B2401/04 ,  D10B2505/04

摘要： Electret melt-blown webs made from a polypropylene composition (PC) comprising a propylene homopolymer (HPP) having: a. a melt flow rate MFR2 in the range from 400 to 5000 g/10 min, b. a melting temperature Tm, in the range from 140 to 160° C., and c. a content of 2, 1 erythro regiodefects in the range from 0.01 to 1.5 mol %.

公开(公告)号：US20240084103A1

公开(公告)日：2024-03-14

申请号：US18260504

申请日：2022-01-21

申请人： BOREALIS AG

发明人： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Joachim Fiebig ,  Henk Van Paridon ,  Wilhelmus Sars ,  Gustaf Tobieson ,  Pauli Leskinen

IPC分类号： C08K5/3435 ,  B01D39/16 ,  D01F1/10 ,  D01F6/06 ,  D04H1/4291 ,  D04H1/56 ,  D04H3/16 ,  D06M10/00

CPC分类号： C08K5/3435 ,  B01D39/1623 ,  D01F1/10 ,  D01F6/06 ,  D04H1/4291 ,  D04H1/56 ,  D04H3/16 ,  D06M10/00 ,  D06M2101/20 ,  D10B2321/022 ,  D10B2401/00

摘要： A polypropylene composition (PC) comprising: a. from 95.0 to 99.99 wt.-%, of a polypropylene (PP), preferably a propylene homopolymer (HPP); and b. from 0.01 to 5.0 wt.-%, of a compound according to Formula (I), wherein each R is independently selected from C1 to C6 alkylene, C2 to C6 alkenylene and a single bond, each R′ is independently selected from H and C1 to C6 alkyl, each R″ is independently selected from H and C1 to C22 alkyl, wherein each alkylene, alkenylene and alkyl group may optionally be substituted by deuterium or fluorine, and the two substituents on the central benzene ring may be either positioned in an ortho, meta or para relationship; wherein the polypropylene composition (PC) has an MFR2 of from 400 to 5000 g/10 min and a melting temperature Tm of from 140 to 170° C.

公开(公告)号：US20230001340A1

公开(公告)日：2023-01-05

申请号：US17779240

申请日：2020-12-03

申请人： BOREALIS AG

发明人： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Joachim Fiebig ,  Henk Van Paridon ,  Wilhelmus Sars ,  Gustaf Tobieson

IPC分类号： B01D39/16 ,  D01F6/06 ,  D04H1/56 ,  C08F4/6592 ,  C08F10/06

摘要： The present invention relates to filtration media made from melt-blown fibers having improved barrier properties. The melt-blown fibers in the filtration media of the invention are made of a visbroken metallocene-catalyzed propylene homopolymer composition with specified melting temperature Tm and molecular weight distribution (MWD).