Cross-linked aliphatic polyketones

A process for producing a molding, comprising the steps of

• i) providing a mixture comprising at least one aliphatic polyketone and at least one crosslinker,
• ii) producing a molding from the mixture obtained in step i), and
• iii) thermally treating the molding at a temperature at which the aliphatic polyketone becomes crosslinked, and
• where the crosslinker is selected from
• di(aminophenyl) compounds in which the two aminophenyl rings are joined to one another via an aliphatic group which has a carbocyclic radical,
• diamine compounds selected from compounds of the formulae (I), (II) and (III),
• wherein
• R1, R2, R3 and R4 independently of one another are selected from hydrogen, halogen, nitro, cyano, hydroxyl, amino, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C6-C14 aryl, where the alkyl group, alkenyl group and alkynyl group are unsubstituted or substituted by Ra and where the aryl group is unsubstituted or substituted by Rb,
• R5, R6, R7, R8, R9, R10, R11 and R12 independently of one another are selected from hydrogen, halogen, nitro, cyano, hydroxyl, amino, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C6-C14 aryl, where the alkyl group, alkenyl group and alkynyl group are unsubstituted or substituted by Ra and where the aryl group is unsubstituted or substituted by Rb,
• R13, R14, R15, R16, R17 and R18 independently of one another are selected from hydrogen, halogen, nitro, cyano, hydroxyl, amino, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C6-C14 aryl, where the alkyl group, alkenyl group and alkynyl group are unsubstituted or substituted by Ra and where the aryl group is unsubstituted or substituted by Rb,
• X is selected from a bond, oxygen, sulfur, carbonyl, sulfonyl, sulfoxide, C1-C6 alkylene, C2-C6 alkenylene and phenylene,
• Ra is selected from halogen, nitro, cyano, hydroxyl, carboxyl, amino, C6-C12 aryl, where the aryl group is unsubstituted or substituted by Rc,
• Rb is selected from halogen, nitro, cyano, amino, C1-C4 alkyl and C1-C4 haloalkyl,
• Rc is selected from halogen, nitro, cyano, C1-C4 alkyl and C1-C4 haloalkyl,
• oligomers/polymers which have at least two amide groups,
• saturated alicyclic compounds which have at least two primary amine groups, and oligomers/polymers which comprise them in incorporated form, and
• mixtures thereof
• wherein the crosslinker is a saturated alicyclic compound which has at least two primary amino groups, selected from aminized dimer fatty acids, polymers which comprise aminated dimer fatty acids in copolymerized form, and mixtures thereof.