MODIFIED POLYCARBONATES HAVING IMPROVED SURFACE PROPERTIES
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Abstract
The present invention relates to polycarbonates comprising imide-containing aryl mono- or dihydroxy compounds as chain terminators and, respectively, monomer units, and also to compositions comprising the said polycarbonates, to their use for the production of mouldings, and to mouldings obtainable therefrom.
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Citations
26 Claims
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1-14. -14. (canceled)
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15. A polycarbonate comprising,
A. as a diphenol unit, a compound of the formula (I)
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16. The polycarbonate according to claim 15, wherein:
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AR1 derives from a diphenol selected from the group consisting of hydroquinone, resorcinol, dihydroxybiphenyl, bis(hydroxyphenyl)alkanes, bis(hydroxyphenyl)cycloalkanes, bis(hydroxyphenyl) sulphides, bis(hydroxyphenyl)ethers, bis(hydroxyphenyl) ketones, bis(hydroxyphenyl) sulphones, bis(hydroxyphenyl) sulphoxides, α
,α
-bis(hydroxyphenyl)diisopropylbenzenes, and also their alkylated, ring-alkylated, ring-halogenated compounds, and mixtures thereof;AR2 is a trivalent phenyl or naphthyl, which is optionally substituted by a C1-C10-alkyl, a halogen, or mixtures thereof; and AR3 is a divalent phenyl, which is optionally substituted by a C1-C10-alkyl, a C1-C10-alkyl having one or more hydroxy substituents, a halogen, or a mixture thereof or is a C1-C8-alkyl.
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17. The polycarbonate according to claim 15, wherein
AR1 derives from hydroquinone, bisphenol A or bisphenol TMC; -
AR2 is a trivalent phenyl which is optionally substituted by methyl, ethyl halogen, or mixtures thereof; AR3 is a divalent phenyl which is optionally substituted by methyl, ethyl, hydroxymethyl, hydroxyethyl, halogen, or a mixture thereof, or is ethyl; X is oxygen; R6 is hydrogen; and R1 to R5 independently of one another, are hydrogen or methyl.
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18. The polycarbonate according to claim 15 having a molecular weight (number average) of from 500 to 500 000.
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19. The polycarbonate according to claim 15 having a molecular weight (number average) of from 500 to 5000.
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20. The polycarbonate according to claim 15 having a molecular weight (number average) of from 1000 to 5000.
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21. The polycarbonate according to claim 15 comprising from 0.5 to 8 mol %, based on one mole of the particular diphenol used, of at least one compound of the formula (II) and (III);
- and from 5 to 50 mol %, based on the total number of moles of diphenol used, of the compound of the formula (IV).
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22. A composition comprising the polycarbonate according to claim 15.
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23. A composition according to claim 22, further comprising polycarbonates having a diphenol composed of a compound of the formula (VIII)
HO—- Z—
OH
(VIII)wherein Z represents a moiety of the formula (VIIIa)
- Z—
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24. The composition according to claim 23, wherein the diphenol of the formula (VIII) is selected from the group consisting of bisphenol TMC, bisphenol A, and mixtures thereof.
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25. A molding obtained from the polycarbonate according to claim 15.
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26. A molding obtained from the composition according to claim 22.
Specification