Polyarylene ether sulfone comprising naphthalic acid anhydride endgroups
A polyarylene ether sulfone comprising endgroups of formula (I), a process for its manufacture, a molding composition comprising the polyarylene ether sulfone, use of the molding composition and fiber, film or shaped article produced using the molding composition.
1. A polyarylene ether sulfone comprising endgroups of formula I:
2. The polyarylene ether sulfone of claim 1 , comprising at least 15% of the endgroups.
3. The polyarylene ether sulfone of claim 1 , comprising from 25% to 90% of the endgroups.
4. The polyarylene ether sulfone of claim 1 , further comprising repeat units of formula II:
wherein
t and q are independently 0 or 1 or 2 or 3,
Q, T and Y are independently a chemical bond or group selected from the group consisting of —O—, —S—, —SO2-, S═O, C═O, —N═N—, and —CRaRb—, where wherein Ra and Rb are independently a hydrogen atom, a C1-C12-alkyl, C1-C12-alkoxy, or C6-C18-aryl group, and wherein at least one of Q, T, and Y is —SO2-, and
Ar and Ar1 are independently an arylene group having from 6 to 18 carbon atoms.
5. The polyarylene ether sulfone of claim 1 , further comprising at least one of formula:
as repeat units.
6. A process for manufacturing a polyarylene ether sulfone comprising endgroups of formula I:
the process comprising:
reacting a polyarylene ether sulfone comprising phenolate endgroups with 4-chloro-1,8-naphthalic acid anhydride.
7. A process for manufacturing a polyarylene ether sulfone comprising endgroups of formula I
the process comprising:
reacting polyarylene ether sulfone forming monomers with 4-chloro-1,8-naphthalic acid anhydride.
8. A molding composition comprising the polyarylene ether sulfone of claim 1 .
9. A fiber, film or shaped article comprising the molding composition of claim 8 .