POLYMERIC MATERIALS
First Claim
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1. A polymeric material having a repeat unit of formula where p represents 0 or 1, said polymeric material having a melt viscosity (MV) measured in kNsm−
- 2 and a Melt Flow Index (MFI), wherein;
(a) when p represents 1, the actual log10 MFI of said polymeric material is greater than the Expected Value for the log10 MFI calculated using the formula;
Expected Value (EV)=−
3.2218x+2.3327 wherein x represents the MV in kNsm−
2 of said polymeric material;
or(b) when p represents 0, the actual log10 MFI of said polymeric material is greater than the Expected Value for the log10 MFI calculated using the formula;
Expected Value (EV)=−
2.539y+2.4299 wherein y represents the MV in kNsm−
2 of said polymeric material.
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Abstract
Polyaryletherketones and a method for producing the same are described wherein, for a given melt viscosity, the melt flow index is higher than expected. Such polymers may be used in situations where relative high flow is desirable.
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Citations
22 Claims
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1. A polymeric material having a repeat unit of formula
where p represents 0 or 1, said polymeric material having a melt viscosity (MV) measured in kNsm− - 2 and a Melt Flow Index (MFI), wherein;
(a) when p represents 1, the actual log10 MFI of said polymeric material is greater than the Expected Value for the log10 MFI calculated using the formula; Expected Value (EV)=−
3.2218x+2.3327 wherein x represents the MV in kNsm−
2 of said polymeric material;
or(b) when p represents 0, the actual log10 MFI of said polymeric material is greater than the Expected Value for the log10 MFI calculated using the formula; Expected Value (EV)=−
2.539y+2.4299 wherein y represents the MV in kNsm−
2 of said polymeric material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 22)
- 2 and a Melt Flow Index (MFI), wherein;
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13. A process for the preparation of a polymeric material which includes phenyl moieties, ketone moieties and ether moieties in the polymeric backbone of said polymeric material, said process comprising selecting at least one monomer having a moiety of formula
wherein Ph represents a phenyl moiety and wherein said at least one monomer has a purity of at least 99.7 area %.
Specification