Polyolefin composite material, method for producing same, and formed product thereof

A polyolefin composite material comprising:

• a polyolefin-based resin;
• an onium-modified low molecular weight polyolefin-based resin having a number average molecular weight of 1000 to 30,000 and consisting of molecules containing an organic onium group as a functional group;
• and
• a layered clay mineral, wherein
• the organic onium group is a group formed by binding together
• at least one group selected from the group consisting of an organic ammonium group, an organic phosphonium group, and an organic sulfonium group, which has a hydrocarbon group having 15 or less carbon atoms as an organic group, and
• at least one group selected from the group consisting of a maleimido group, an amido group, a sulfonamido group, a sulfido group, an amino group, an ester group, and a thioester group.

A polyolefin composite material comprising:

• a polyolefin-based resin;
• an onium-modified low molecular weight polyolefin-based resin having a number average molecular weight of 1000 to 30,000 and consisting of molecules containing an ornanic onium group as a functional group;
• and
• a layered clay mineral, wherein
• the onium-modified low molecular weight polyolefin-based resin is at least one compound selected from the group consisting of onium-modified low molecular weight polypropylene represented by the following general formula (1):
• and onium-modified low molecular weight polypropylene represented by the following general formula (2):
• where R1 to R3 may be the same or different, and each represent a group selected from the group consisting of an alkyl group, an alkenyl group, a cycloalkyl group, a cycloalkenyl group, a phenyl group, an aralkyl group, and an alkyiphenyl group, each having 1 to 15 carbon atoms, X represents a group selected from the group consisting of an alkylene group, an alkylidene group, a cycloalkylene group, and a cycloalkylidene group, each having 2 to 15 carbon atoms, Q represents an atom selected from the group consisting of a nitrogen atom and a phosphorus atom, Z− represents a counter anion, and PP represents a low molecular weight polyolefin-based resin.