Claims
- 1. A method for making a fusible, rod-like graft copolymer having repeating units of the formula:
- ----(--Z--Ar--).sub.a -- --(--Z--Ar'--).sub.b --
- wherein a ranges from about 0.75 to 0.97 and b is 1-a; wherein Z is ##STR13## wherein X is --O-- or --S--; wherein Ar is ##STR14## wherein R is a monovalent aromatic radical, and R' and R" are individually selected from the group consisting of hydrogen, a monovalent aromatic radical, a monovalent aliphatic radical, a monovalent cycloaliphatic radical, and a monovalent heterocyclic radical;
- wherein Ar' is ##STR15## and wherein Y is a poly(etherketone) having repeating units of the formula ##STR16## wherein P is a divalent phenylene or substituted phenylene moiety and c is an integer having a value of 1 to 4, which comprises the steps of dissolving an aromatic, para-oriented polymer having repeating units of the formula: ##STR17## wherein Z, Ar, Ar', a and b are as defined previously, wherein Y is --H, in a mixture of methanesulfonicacid and phosphorus pentoxide, adding a phenoxybenzoic acid to the reaction mixture, stirring the mixture at about room temperature for about 2 to 48 hours, raising the reaction temperature, stirring the reaction mixture at about 130.degree. C. for about 8 to 96 hours, and recovering said copolymer.
- 2. The method of claim 1 wherein the quantity of phenoxybenzoic acid is about 1 to 10 moles per mole of polymer.
- 3. A method for preparing a fusible, rod-like graft copolymer having repeating units of the formula: ##STR18## wherein a ranges from about 0.75 to 0.97 and b is 1-a; wherein Z is ##STR19## wherein X is --O-- or --S--; wherein Ar is ##STR20## wherein R is a monovalent aromatic radical, and R' and R" are individually selected from the group consisting of hydrogen, a monovalent aromatic radical, a monovalent aliphatic radical, a monovalent cycloaliphatic radical, and a monovalent heterocyclic radical;
- wherein Ar' is ##STR21## and wherein Y is a poly(etheretherketone) having repeating units of the formula ##STR22## wherein P is a divalent phenylene or substituted phenylene moiety, d is an integer having a value of 1 to 4 and e is an integer having a value of 2 to 5, which comprises the steps of dissolving an aromatic, para-oriented polymer having repeating units of the formula: ##STR23## wherein Z, Ar, Ar', a and b are as defined previously, wherein Y is --H, in a mixture of methanesulfonicacid and phosphorus pentoxide, adding a mixture of an aromatic ether and an aromatic ether dibenzoic acid to the reaction mixture, stirring the mixture at about room temperature for about 2 to 48 hours, raising the reaction temperature, stirring the reaction mixture at about 130.degree. C. for about 8 to 96 hours, and recovering said copolymer.
- 4. The method of claim 3 wherein the combined quantity of aromatic ether and aromatic ether dibenzoic acid is about 1 to 5 moles per mole of polymer.
Parent Case Info
This is a division of application Ser. No. 07/602,521, filed Oct. 24, 1990, now abandoned.
RIGHTS OF THE GOVERNMENT
The invention described herein may be manufactured and used by or for the Government of the United States for all governmental purposes without the payment of any royalty.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
8907617 |
Aug 1989 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
602521 |
Oct 1990 |
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