Polyarylene ether sulfones
US10301432B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2013 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2381/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the manufacturing of a poly(arylether sulfone)polymer comprising reacting in a solvent mixture comprising a polar aprotic solvent and in the presence of an alkali metal carbonate, a monomer mixture which contains: at least one 1,4:3,6-dianhydrohexitol selected from the group consisting of isosorbide (1), isomannide (2) and isoidide (3); at least one dihaloaryl compound of formula (S): X—Ar1—SO2—[Ar2—(T-Ar3)n—SO2]m—Ar4—X formula (S) wherein n and m, equal to or different from each other, are independently zero or an integer of 1 to 5; X and X′, equal to or different from each other, are halogens selected from F, Cl, Br, I; each of Ar1, Ar2, Ar3 and Ar4 equal to or different from each other and at each occurrence, is an aromatic moiety, T is a bond or a divalent group optionally comprising one or more than one heteroatom; optionally, at least one dihydroxyl compound different from the diol (AA); optionally, at least one dihaloaryl compound different from the dihalo (BB); and optionally, at least one hydroxyl-halo compound [hydro-halo (A′B′)]; being understood that the overall amount of halo-groups and hydroxyl-groups of the monomers of the monomer mixture is substantia…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.