Patent ID: 11932731
Assignee: SUMITOMO CHEMICAL COMPANY LIMITED
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 10:
11. The aromatic polysulfone resin according to claim 1, which comprises at least one repeating unit (I) selected from the group consisting of a repeating unit represented by chemical formula (Ia) shown below, a repeating unit represented by chemical formula (Ib) shown below, a repeating unit represented by chemical formula (Ic) shown below and a repeating unit represented by chemical formula (Id) shown below, and
a repeating unit (II) represented by chemical formula (II) shown below;, wherein 1 represents an integer of 0 or greater, each of m1, m2, m3 and m4 represents a number of 0 or greater, wherein m1+m2+m3+m4=m>0, and hydrogen atoms in phenylene groups in formula (Ia) to formula (Id) may be each independently substituted with an alkyl group, an aryl group or a halogen atom;, wherein n represents a number greater than 0, and hydrogen atoms in the phenylene groups in the formula may be each independently substituted with an alkyl group, an aryl group or a halogen atom; and
wherein a ratio between the molar content (m) of the repeating unit (I) and the molar content (n) of the repeating unit (II) is within a range from 1:450 to 1:200.