Patent ID: 7601771

Claim:
A polymer composition, which comprises a polymer component comprising at least one at least semicrystalline polymer having no ionic groups, and 0.1 to 30% by weight of at least one ionic liquid, as plasticizer, wherein the semicrystalline polymer is a thermoplastically processable polymer selected from the group consisting of (co)polyamides, (co)polyesters, polyurethanes, polyphenylene ethers, polyolefins, (co)polyetheramides, polyaramides, polyether(ether)ketones, and polyetheresteramides, and the ionic liquid is a salt having a cation of the following structures: where R1, R2, R3, R4, R5, and R6 are identical or different, and are hydrogen, a linear or branched aliphatic hydrocarbon radical having from 1 to 20 carbon atoms, a cycloaliphatic hydrocarbon radical having from 5 to 30 carbon atoms, an aromatic hydrocarbon radical having from 6 to 30 carbon atoms, an alkylaryl radical having from 7 to 40 carbon atoms, a linear or branched aliphatic hydrocarbon radical having from 2 to 20 carbon atoms and having interruption by one or more heteroatoms (oxygen, NH, NCH 3 ), or are a linear or branched aliphatic hydrocarbon radical having from 2 to 20 carbon atoms and having interruption by one or more functionalities, selected from the group —O—C(O)—, —(O)C—O—, NH—C(O)—, —(O)C—NH, —(CH 3 )N—C(O)—, —(O)C—N(CH 3 )—, —S(O) 2 —O—, —O—S(O) 2 —, —S(O) 2 —NH—, —NH—S(O) 2 —, —S(O) 2 —N(CH 3 )—, —N(CH 3 )—S(O) 2 —,or are a linear or branched aliphatic hydrocarbon radical having from 1 to 20 carbon atoms, terminally functionalized by —OH, —NH 2 , or —N(H)CH 3 , or are a polyether of formula —(R 7 —O) n —R 8 , having block or random structure, where R 7 is a linear or branched hydrocarbon radical having from 2 to 4 carbon atoms, n=from 1 to 30, and R 8 is hydrogen, a linear or branched aliphatic hydrocarbon radical having from 1 to 20 carbon atoms, a cycloaliphatic hydrocarbon radical having from 5 to 30 carbon atoms, an aromatic hydrocarbon radical having from 6 to 30 carbon atoms, an alkylaryl radical having from 7 to 40 carbon atoms, or a —C(O)—R 9 radical, where R 9 is a linear or branched aliphatic hydrocarbon radical having from 1 to 20 carbon atoms, a cycloaliphatic hydrocarbon radical having from 5 to 30 carbon atoms, an aromatic hydrocarbon radical having from 6 to 30 carbon atoms, an alkylaryl radical having from 7 to 40 carbon atoms; and having an anion selected from the group consisting of halide, phosphate, halophosphates, alkylated phosphates, nitrate, sulfate, hydrogensulfate, alkyl sulfates, aryl sulfates, perfluorinated alkyl sulfates, perfluorinated aryl sulfates, sulfonate, alkylsulfonates, arylsulfonates, perfluorinated alkyl- and arylsulfonates, perchlorate, tetrachloroaluminate, tetrafluoroborate, alkylated borates, tosylate, saccharinate, alkyl carboxylates, and bis(perfluoroalkylsulfonyl)amide anions.