Disclosed are electret materials with outstanding thermal and charge stability. The electret materials comprise a melt blend of a thermoplastic polymer and one or more compounds selected from the aromatic trisamides. The aromatic trisamides are for example of the formula
The melt blends are subjected to an electret treatment, for example a corona treatment. The electret materials are for example nonwoven polyolefin webs and are employed as filter materials, wipes, absorbent materials, filter masks, acoustic materials, printing substrates, measuring devices or contactless switches. The present electret materials may also comprise a further additive selected from the hindered amine light stabilizers and the hydroxyphenylalkylphosphonic esters or monoesters.
Mono-and multi-layer blown films
申请人:Stoll Klaus
公开号:US20090208718A1
公开(公告)日:2009-08-20
An extruded air cooled blown film having a) a total thickness of 5 to 500 μm, b) a mono-layer structure or 2 to 9 coextruded layers, c) at least one layer L containing a polymer selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, hetero-phasic polypropylene block copolymers, or any mixtures thereof, said polymer having a melt flow rate, according to ASTM D-1238, of 0.1 to 10 dg/min at 230° C. and 2.16 kg, said layer L further containing 0.001 to 2%, relative to the weight of the polymer, of a particular nucleating agent, and optionally d) a Modulus according to EN ISO 527 enhanced by at least 10% versus a reference film without the nucleating agent.
Electret Materials
申请人:Chin Hui
公开号:US20110230109A1
公开(公告)日:2011-09-22
Disclosed are electret materials with outstanding thermal and charge stability. The electret materials comprise a melt blend of a thermoplastic polymer and one or more compounds selected from the aromatic trisamides. The aromatic trisamides are for example of the formula
The melt blends are subjected to an electret treatment, for example a corona treatment. The electret materials are for example nonwoven polyolefin webs and are employed as filter materials, wipes, absorbent materials, filter masks, acoustic materials, printing substrates, measuring devices or contactless switches. The present electret materials may also comprise a further additive selected from the hindered amine light stabilizers and the hydroxyphenylalkylphosphonic esters or monoesters.
POLYPROPYLENE RESIN COMPOSITION
申请人:OOBAYASHI Yoshiaki
公开号:US20110301268A1
公开(公告)日:2011-12-08
A polypropylene resin composition, comprising (A) 51 to 99% by weight of a propylene polymer having a melt flow rate of 10 to 200 g/10 minutes, and containing 0.1 to 40% by weight of an ethylene unit and/or α-olefin unit having 4 to 10 carbon atoms and 60 to 99.9% by weight of a propylene unit, (B) 1 to 49% by weight of an ethylene polymer having density of 0.85 to 0.93 g/cm
3
, and (C) 0.001 to 5 parts by weight of an amide compound as a nucleating agent.
MONO-AND MULTI-LAYER BLOWN FILMS
申请人:BASF SE
公开号:US20130161875A1
公开(公告)日:2013-06-27
An extruded air cooled blown film having
a) a total thickness of 5 to 500 μm,
b) a mono-layer structure or 2 to 9 coextruded layers,
c) at least one layer L containing a polymer selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, hetero-phasic polypropylene block copolymers, or any mixtures thereof, said polymer having a melt flow rate, according to ASTM D-1238, of 0.1 to 10 dg/min at 230° C. and 2.16 kg, said layer L further containing 0.001 to 2%, relative to the weight of the polymer, of a particular nucleating agent, and optionally
d) a Modulus according to EN ISO 527 enhanced by at least 10% versus a reference film without the nucleating agent.