Back to results
US 2017/0321031 A1Published application
Polyarylethersulfone copolymers
AssigneeBASF SE
InventorsMartin WEBER, Christian MALETZKO, Thomas WEISS, Joerg ERBES, Bastiaan Bram Pieter STAAL
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for preparing polyarylethersulfone-polyalkylene oxide block copolymers (PPC) comprising the polycondensation of a reaction mixture (RG) comprising the components: (A1) at least one aromatic dihalogen compound, (B1) at least one aromatic dihydroxyl compound, (B2) at least one polyalkylene oxide having at least two hydroxyl groups, (C) at least one aprotic polar solvent and (D) at least one metal carbonate, where the reaction mixture (RG) does not comprise any substance which forms an azeotrope with water.
Claims13
1-10. (canceled)
11:
- A polyarylethersulfone-polyalkylene oxide block copolymer, obtained by a method according to comprising:
- polycondensing a reaction mixture comprising:
- (A1) an aromatic dihalogen compound,
- (B1) an aromatic dihydroxyl compound,
- (B2) a polyalkylene oxide comprising at least two hydroxyl groups,
- (C) an aprotic polar solvent, and
- (D) a metal carbonate,
- wherein the reaction mixture does not comprise any substance which forms an azeotrope with water.
5 more elements
12:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, which has a weight average molecular weight of 10 000 to 150 000 g/mol.
13:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, which has a polydispersity of 2.0 to ≦4.
14:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein component (A1) comprises at least 50% by weight of at least one aromatic dihalosulfone compound selected from the group consisting of 4,4′-dichlorodiphenyl sulfone and 4,4′-difluorodiphenyl sulfone, based on a total weight of component (A1) in the reaction mixture.
15:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein component (B1) comprises at least 50% by weight of an aromatic dihydroxyl compound selected from the group consisting of 4,4′-dihydroxybiphenyl and 4,4′-dihydroxydiphenyl sulfone, based on a total weight of component (B1) in the reaction mixture.
16:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein component (B2) comprises at least 50% by weight of a polyalkylene oxide which is obtained by polymerisation of ethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, 1,2-pentene oxide, 2,3-pentene oxide or a mixture thereof, based on a total weight of component (B2) in the reaction mixture.
17:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein the reaction mixture comprises N-methyl-2-pyrrolidone as component (C).
18:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein the reaction mixture comprises potassium carbonate as component (D).
19:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein component (A1) is 4,4′-dichlorodiphenyl sulfone, component (B1) is 4,4′-dihydroxydiphenyl sulfone and component (B2) is a polyethylene glycol.
20:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein the reaction mixture comprises 0.7 to 0.995 mol of component (B1) and 0.005 to 0.3 mol of component (B2) per one mole of component (A1).
21:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein the polyarylethersulfone-polyalkylene oxide block copolymer has a polydispersity of ≦4, wherein the polydispersing is defined as a quotient of a weight average molecular weight MW and a number average molecular weight Mn.
22:
- The polyarylethersulfone-polyalkylene oxide block copolymer according to claim 11, wherein at least 85% by weight of component (B2) present in the reaction mixture are incorporated into the polyarylethersulfone-polyalkylene oxide block copolymer.