US 9,309,395 B2Granted

Polypropylene composite

AssigneeBorealis AG

InventorsMarkus Hemmeter, Markus Gahleitner, Cornelia Tranninger, Petar Doshev, Michael Jerabek

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Abstract

Fiber reinforced composition comprising (a) a polypropylene random copolymer comprising ethylene and/or C4 to C8 α-olefin (PP-RACO), (b) fibers (F), and (c) a polar modified polypropylene as adhesion promoter (AP), wherein (i) the polypropylene random copolymer comprising ethylene and/or C4 to C8 α-olefin (PP-RACO) heaving a melt flow rate MFR2 (230° C.) measured according to ISO 1133 of at least 5 g/10 min, (ii) the fibers (F) are selected from the group consisting of glass fibers, metal fibers, ceramic fibers and graphite fibers, and (iii) the polymer contained in the reinforced composition forms a continuous phase being the matrix of the fiber reinforced composition.

Claims11

Dependent claims

Fiber reinforced composition consisting essentially of:

(a) a polypropylene random copolymer comprising ethylene and/or C4 to C8 α-olefin (PP-RACO),
(b) fibers (F), and
(c) a polar modified polypropylene as adhesion promoter (AP),
(d) optionally a masterbatch, and
(e) optionally one or more additives,
wherein;
(i) the polypropylene random copolymer comprising ethylene and/or C4 to C8 α-olefin (PP-RACO) having a melt flow rate MFR2 (230 ° C.) measured according to ISO 1133 of at least 5 g/10min,
(ii) the fibers (F) are selected from the group consisting of glass fibers, metal fibers, ceramic fibers and graphite fibers, and
(iii) the complete polymer contained in the reinforced composition forms a continuous phase being the matrix of the fiber reinforced composition.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/421,612Filed 20 Aug 2013
Priority: EP 1218182927 Aug 2012
Published: US 2015/0218355 A16 Aug 2015
Granted: 12 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

C08L 23/14
Homopolymers or copolymers of propene: copolymers of propene
C08L 23/0869
With unsaturated hydrocarbons containing atoms other than carbon or hydrogen: with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated…
C08L 23/142
Copolymers of propene: at least partially crystalline copolymers of propene with other olefins
C08L 51/06
Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds ;…:…