Claims
- 1. A method of making polyetherimide oligomers comprising the step of:
- condensing a mixture of about 2m+2 moles of nitrophthalic anhydride of the formula: ##STR44## with about m+1 moles of diamine, about m moles of dialcohol, and about 2 moles of A--OH, wherein ##STR45## n=1 or 2; m=an integer greater than or equal to 1;
- E=allyl or methallyl;
- R=a trivalent C.sub.(6-13) aromatic organic radical;
- R.sub.1 =any of lower alkyl, lower alkoxy, aryl, or substituted aryl; ##STR46## j=0, 1, or 2; and G=--CH.sub.2 --, --O--, --S--, or --SO.sub.2 --.
- 2. The polyetherimide oligomer that is the product of the process of claim 1.
- 3. A method for making polyetherimide oligomers comprising the step of:
- condensing about 2m+2 moles of nitrophthalic anhydride with about m+1 moles of dialcohol, about m moles of diamine, and about 2 moles of A--NH.sub.2, wherein: ##STR47## n=1 or 2; m=an integer greater than or equal to 1;
- E=allyl or methallyl;
- R.sub.1 =any of lower alkyl, lower alkoxy, aryl, or substituted aryl; ##STR48## j=0, 1, or 2; and G=--CH.sub.2 --, --O--, --S--, or --SO.sub.2 --.
- 4. The polyetherimide oligomer that is the product of the process of claim 3.
- 5. A method for making polyetherimide oligomers comprising the step of:
- condensing about 2m moles of nitrophthalic anhydride with about m+1 moles of dialcohol, about m moles of diamine, and about 2 moles of A--NO.sub.2, wherein: ##STR49## n=1 or 2; m=an integer greater than or equal to 1;
- E=allyl or methallyl;
- R.sub.1 =any of lower alkyl, lower alkoxy, aryl, or substituted aryl; ##STR50## j=0, 1, or 2; and G=--CH.sub.2 --, --O--, --S--, or --SO.sub.2 --.
- 6. The polyetherimide oligomer that is the product of the process of claim 5.
- 7. A polyetherimide oligomer, comprising the product of the process of reacting a dialcohol and a nitro-terminated end cap, the dialcohol having the formula: ##STR51## wherein n is an integer of from about 3 to about 12;
- --O--T< is selected from the group consisting of: ##STR52## wherein R.sup.2 is hydrogen, lower alkyl or lower alkoxy;
- Z is a member of the group consisting of: ##STR53## and divalent organic radicals of the general formula: ##STR54## wherein Y is a member selected from the group consisting of divalent radicals of the formula:
- --C.sub.y H.sub.2y --, --CO--, --SO.sub.2 --, --O--, and --S--
- where q is 0 or 1, and y is a whole number from 1 to 5; and
- R and R.sub.1 are divalent organic radicals independently selected from the group consisting of aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2-8) alkylene terminated polydiorganosiloxane, and divalent radicals included by the formula: ##STR55## where Q is a member selected from the group consisting of:
- --O--, --CO--, --SO.sub.2 --, and --C.sub.x H.sub.2x --
- where x is a whole number from 1 to 5 inclusive; and
- the nitro-terminated end cap having the formula A--NO.sub.2 wherein A is selected from the group consisting of: ##STR56## n is 1 or 2; Z is ##STR57## E is allyl or methallyl; R.sub.1 is any of lower alkyl, lower alkoxy, aryl, or substituted aryl;
- j is 0, 1, or 2;
- G is --CH.sub.2 --, --O--, --S--, or --SO.sub.2 --; and
- Me is methyl.
- 8. A blend comprising the oligomer of claim 7 and a compatible polyetherimide polymer.
- 9. A prepreg comprising the blend of claim 8 and a reinforcing additive in fiber or particulate form.
- 10. A composite comprising the cured oligomer of claim 7.
- 11. A composite comprising the cured blend of claim 8.
- 12. A prepreg comprising the oligomer of claim 7 and a reinforcing additive in fiber or particulate form.
Parent Case Info
The present application is a divisional application based upon U.S. patent application Ser. No. 07/213,966, filed Jul. 1, 1988, which now U.S. Pat. No. 4,981,922 is a divisional application based upon U.S. patent application Ser. No. 07/016,703, filed Feb. 20, 1987, now U.S. Pat. No. 4,851,495.
US Referenced Citations (26)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2002378 |
Feb 1979 |
GBX |
8101855 |
Jul 1981 |
WOX |
Non-Patent Literature Citations (2)
Entry |
K. L. Mittal, (Ed.), Polyimides, vol. 2, pp. 1039-1047. |
Kwiatkowski et al., Thermosetting Diphenyl Sulfone-Based Malcimides, Journal Of Polymer Science, vol. 13, pp. 961-972 (1975). |
Divisions (2)
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Number |
Date |
Country |
Parent |
213966 |
Jul 1988 |
|
Parent |
16703 |
Feb 1987 |
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