Claims
- 1. A thermoplastic injection-moldable composition comprising 10 to 99.8%, by weight of the composition, of a polyamidimide condensation product, prepared at a temperature of from 0.degree. to 400.degree. C., from a mixture consisting essentially of a diisocyanate, a polycarboxylic acid anhydride and a lactam or a first polyamide, where the diisocyanate is a diisocyanate derived from isophorone; toluene diisocyanate; m-phenylenediisocyanate; 4,4'-diisocyanatodiphenylmethane; 4,4'-diisocyanatodiphenylether; naphthylene-1,5-diisocyanate; p-phenylenediisocyanate; 4,4'-diisocyanato-diphenyl-dimethylmethane; 4,4'-diisocyanatodicyclohexylmethane; an aliphatic diisocyanate containing two to twelve carbon atoms or mixtures thereof and 0.2 to 90%, by weight of the composition, of a second polyamide.
- 2. A thermoplastic injection-moldable composition according to claim 1, wherein the polyamidimide condensation product is present in an amount of from 92 to 99.8%, by weight of the composition, and the second polyamide is present in the amount of from 0.2 to 8%, by weight of the composition.
- 3. A thermoplastic injection-moldable composition according to claim 1, wherein the polycarboxylic acid anhydride is a trimellitic acid anhydride.
- 4. A thermoplastic injection-moldable composition according to claim 1 wherein the polyamidimide condensation product is prepared in a solvent for the polyamidimide condensation product.
- 5. A thermoplastic injection-moldable composition in accordance with claim 1 prepared by introducing the polyamidimide in the solid state and the second polyamide in the solid state in an extruder and then mixing in a solvent-free molten state.
- 6. A thermoplastic injection-moldable composition in accordance with claim 1 prepared by first mixing a solution of the polyamidimide with a solution of the second polyamide in an extruder and then evaporating the solvent in the extruder or precipitating the molding composition with a precipitating agent.
- 7. A thermoplastic injection-moldable composition in accordance with claim 6, wherein the evaporation occurs in the extruder at a temperature from 240.degree. to 400.degree. C.
- 8. A thermoplastic injection-moldable composition in accordance with claim 6, wherein the evaporation occurs in the extruder at a temperature from 280.degree. to 340.degree. C.
- 9. A thermoplastic injection-moldable composition in accordance with claim 6, wherein the evaporation occurs under vacuum.
- 10. A thermoplastic injection-moldable composition in accordance with claim 6, wherein the composition is after-condensed.
- 11. A method for preparing the thermoplastic injection-moldable composition in accordance with claim 1 by first introducing the polyamidimide in a solid state and a second polyamide in a solid state in an extruder and then mixing in a solvent-free molten state.
- 12. A method for preparing a thermoplastic injection-moldable composition in accordance with claim 1 by first mixing a solution of the polyamidimide with a solution of a second polyamide in an extruder, then evaporating the solvent in the extruder or precipitating the molding composition with a precipitating agent.
- 13. A method in accordance with claim 12, wherein the evaporation occurs in the extruder at a temperature from 240.degree. to 400.degree. C.
- 14. A method in accordance with claim 12, wherein the evaporation occurs in the extruder at a temperature from 280.degree. to 340.degree. C.
- 15. A method in accordance with claim 12, wherein the evaporation occurs under vacuum.
- 16. A method in accordance with claims 11, wherein the composition is after-condensed.
- 17. In an improved method for forming molding parts from a thermoplastic molding material, the improvement which comprises using the thermoplastic injection-moldable composition recited in claim 1 as the molding material.
- 18. In an improved method for forming molding parts from a thermoplastic molding material, the improvement which comprises using the thermoplastic injection-moldable composition recited in claim 2 as the molding material.
- 19. In an improved method for forming molding parts from a thermoplastic molding material, the improvement which comprises using the thermoplastic injection-moldable molding composition recited in claim 3 as the molding material.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3431859 |
Aug 1984 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 766,501 filed Aug. 19, 1985, now abandoned.
Foreign Referenced Citations (3)
Number |
Date |
Country |
0097434 |
Jan 1984 |
EPX |
8206027 |
Dec 1982 |
FRX |
2039931 |
Aug 1980 |
GBX |
Continuations (1)
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Number |
Date |
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Parent |
766501 |
Aug 1985 |
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