METHOD FOR DECREASING THE CONCENTRATION OF A METAL IN A MONOMER COMPOSITION COMPRISING BIS(BENZOYL)BENZENE
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Abstract
Disclosed are methods of decreasing the concentration of a metal in a monomer composition including a bis(benzoyl)benzene, bis(benzoyl)benzene monomer compositions having a low total metal concentration, di-ketone polymers made from low metal bis(benzoyl)benzene monomers, and polymer compositions and shaped articles including the di-ketone polymers. It was surprisingly found that di-ketone polymers made by nucleophilic substitution of low metal bis(benzoyl)benzene monomers exhibit greater crystallinity, as compared with di-ketone polymers made with conventional monomers.
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33 Claims
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1-15. -15:
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16. A method for decreasing the concentration of a metal in a monomer composition comprising:
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b) recrystallizing the monomer composition in a first solvent (Solvent A), wherein; the first solvent (Solvent A) includes at least 10 wt. % of an aprotic solvent having a dielectric constant greater than 30, relative to the total weight of the first solvent (Solvent A), and the first solvent (Solvent A) includes less than 1 wt. % of inorganic salts relative to the total weight of the first solvent (Solvent A), and the monomer composition comprises a compound of formula; - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31)
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26. A monomer composition comprising:
a compound of formula; - View Dependent Claims (33)
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28. A di-ketone polymer synthesized by nucleophilic substitution of monomers including bis(benzoyl)benzene monomers,
wherein at least 80 mol % of the bis(benzoyl)benzene monomers are low metal monomers.
Specification