Modified polyolefin resin compositions

A method for preparing a modified polyolefin resin comprising reacting a polyolefin resin with an epoxy group-containing acrylamide monomer represented by the following general formula I:

• H.sub.2 C.dbd.CR--CO--NH--CH.sub.2 --Ar (I)
• wherein Ar represents an aromatic hydrocarbon group having 6 to 24 carbon atoms which is substituted with at least one glycidyloxy group and R represents a hydrogen atom or a methyl group in the presence of a free-radical initiator in an extruder.

A thermoplastic resin composition comprising 5 to 95% by weight of a modified polyolefin resin obtained by reacting a polyolefin resin with an epoxy group-containing acrylamide monomer represented by general formula I:

• H.sub.2 C.dbd.CR--CO--NH--CH.sub.2 --Ar (I)
• wherein Ar represents an aromatic hydrocarbon group having 6 to 24 carbon atoms which is substituted with at least one glycidyloxy group and R represents a hydrogen atom or a methyl group in the presence of a free-radical initiator and 95 to 5% by weight of another thermoplastic resin.

A filler-reinforced polyolefin resin composition comprising 100 parts by weight of a modified polyolefin resin obtained by reacting a polyolefin resin with an epoxy group-containing acrylamide monomer represented by general formula I:

• H.sub.2 C.dbd.CR--CO--NH--CH.sub.2 --Ar (I)
• wherein Ar represents an aromatic hydrocarbon group having 6 to 24 carbon atoms which is substituted with at least one glycidyloxy group and R represents a hydrogen atom or a methyl group in the presence of a free-radical initiator and 3 to 300 parts by weight of a filler.

A modified polyolefin resin composition obtained by melting and kneading (A) 10 to 90% by weight of a polyolefin resin, (B) 90 to 10% by weight of another thermoplastic resin;

• and 0.01 to 20 parts by weight of an epoxy group-containing acrylamide monomer represented by general formula I:
• H.sub.2 C.dbd.CR--CO--NH--CH.sub.2 --Ar (I)
• wherein Ar represents an aromatic hydrocarbon group having 6 to 24 carbon atoms which is substituted with at least one glycidyloxy group and R represents a hydrogen atom or a methyl group and 0.005 to 5 parts by weight of a free-radical initiator, respectively per 100 parts by weight of the sum of the above components (A) and (B).

A filler-reinforced polyolefin resin composition obtained by melting and kneading 100 parts by weight of a polyolefin resin, 0.01 to 20 parts by weight of an epoxy group-containing acrylamide monomer represented by general formula I:

• H.sub.2 C.dbd.CR--CO--NH--CH.sub.2 --Ar (I)
• wherein Ar represents an aromatic hydrocarbon group having 6 to 24 carbon atoms which is substituted with at least one glycidyloxy group and R represents a hydrogen atom or a methyl group 0.005 to 5 parts by weight of a free-radical initiator and 3 to 300 parts by weight of a filler.