| 摘要 |
K-18563/A/CGM 388 Mixtures based on polyamide-polyimide block copolymers Mixtures comprising, based on 100 parts by weight of the mixture, (a) from 50 to 98 parts by weight of a polyamide-polyimide (PA-PI) block copolymer, (b) from 1 to 49 parts by weight of a polyarylene ether having a reduced viscosity of from 0.1 to 2.0 dl/g, measured on a solution of 1 g of polymer in 100 ml of N-methyl-2-pyrrolidone (NMP) at 25.degree.C, and comprising, based on the total amount of structural units present in the polyether resin, from 5 to 100 mol% of a recurring structural unit of the formula Ia ?O - Ar1 - O - Ar2? (Ia) and from 0 to 95 mol% of a recurring structural unit of the formula Ib ?O - Ar3 - O - Ar2? (Ib) in which Ar1 is a carbocyclic-organic radical which is unsubstituted or substituted by one or more C1-C4alkyl groups, C1-C4alkoxy groups or halogen atoms, Ar2 is a carbocyclic-aromatic radical which is unsubstituted or substituted by one or more C1-C4alkyl groups or C1-C4alkoxy groups and contains one or more -CO-, -SO2- or -SO-units as bridging members, or is a cyanophenylene, pyridine or pyrazine radical, and Ar3 is a carbocyclic-aromatic radical which is unsubstituted or substituted by one or more C1-C4alkyl groups, C1-C4alkoxy groups or halogen atoms and is different from Ar1, and (c) from 1 to 40 parts by weight of an epoxy resin containing at least two glycidyl groups in the molecule, and (d) from 0 to 10 parts by weight of a further polymer from the group comprising polyamides, polyimides, polyether-imides, polyester-imides, polyhydantoin and polyparabanic acids, are suitable for the preparation of solvent-resistant coatings and adhesive bonds, in particular for the production of flexible laminates.
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