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US 2020/0048418 A1Published application
A process for preparing a polyarylenesulfone/polyester block copolymer (p)
OwnerAxel Wilms, Arnold Schneller +3inventors
InventorsAxel Wilms, Arnold Schneller, Joseph M. Dennis, Nicholas G. Moon, Timothy E. Long
Life of this patent
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Abstract
The present invention relates to a process for preparing a polyarylenesulfone/polyester block copolymer (P) and to the polyarylenesulfone/polyester block copolymer (P) as such.
Claims15
A process for preparing a polyarylenesulfone/polyester block copolymer (P), comprising the steps:
- ai) converting a reaction mixture (RM1), which comprises the components,
- (A1) at least one polyarylenesulfone polymer (PS1) comprising phenolic hydroxy groups,
- (A2) at least one aliphatic alcohol having a halogen substituent,
- in the presence of at least one aprotic polar solvent, to obtain a reaction mixture (RM2) comprising at least one functionalized polyarylenesulfone polymer (PS2) having terminal hydroxyalkyl groups and the at least one aprotic polar solvent,
- aii) separating the at least one functionalized polyarylenesulfone polymer (PS2) from the reaction mixture (RM2),
- b) converting a reaction mixture (RM3), which comprises
- (B1) the at least one functionalized polyarylenesulfone polymer (PS2) obtained in step aii),
- (B2) at least one aromatic dicarboxy compound,
- (B3) at least one aliphatic dihydroxy compound,
- to obtain a reaction mixture (RM4) comprising the polyarylenesulfone/polyester block copolymer (P).
7 more elements
A process for preparing a functionalized polyarylenesulfone polymer (PS2), which comprises the steps of
- ai) converting a reaction mixture (RM1), which comprises the components,
- (A1) at least one polyarylenesulfone polymer (PS1) comprising phenolic hydroxy groups,
- (A2) at least one aliphatic alcohol having a halogen substituent,
- (A3) at least one halide salt,
- in the presence of at least one aprotic polar solvent, to obtain a reaction mixture (RM2) comprising the at least one functionalized polyarylenesulfone polymer (PS2) having terminal hydroxyalkyl groups and the at least one aprotic polar solvent,
- aii) separating the at least one functionalized polyarylenesulfone polymer (PS2) from the reaction mixture (RM2).
3 more elements
Dependencies are inferred from the claim text.