Claims
- 1. A composition comprising secondary amine-terminated aromatic oligomers having the formula
- R.sup.1 --NH--A.sup.1 --ZA.sup.2 ZA.sup.3 ].sub.n ZA.sup.2 Z--A.sup.1 --NHR.sup.1 (I),
- wherein:
- R.sup.1 is C.sub.1-4 alkyl or phenyl;
- each of A.sup.1 , A.sup.2 and A.sup.3 is independently an aromatic radical, with A.sup.1 and A.sup.3 being divalent and A.sup.2 being divalent or tetravalent;
- Z is a bridging radical containing at least one non-carbon linking atom; and
- n is from 0 to about 20.
- 2. A composition according to claim 1 wherein A.sup.1 is p-phenylene or m-phenylene, Z is oxygen or has the formula ##STR9## and A.sup.2 has one of the formulas ##STR10## wherein Q is a single bond or a divalent bridging group.
- 3. A composition according to claim 2 wherein R.sup.1 is methyl or phenyl.
- 4. A composition according to claim 3 wherein Z has formula VIII, A.sup.2 has formula IV and Q is --CH.sub.2 --, --C.sub.2 H.sub.4 --, --C(CH.sub.3).sub.2 --, --C(CF.sub.3).sub.2 --, --O--, ##STR11## --S.sub.x --, --SO.sub.2 --, --OR.sup.2 --O--, --S--R.sup.2 --S-- or --SO.sub.2 R.sup.2 --SO.sub.2 --, wherein x is 1 or 2 and R.sup.2 is a divalent aliphatic or aromatic radical.
- 5. A composition according to claim 4 wherein Q is --O--R.sup.2 --O-- and R.sup.2 has one of the formulas ##STR12## wherein each R.sup.3 is independently hydrogen of methyl; R.sup.4 is a single bond, a straight chain or branched alkylene radical containing 1-5 carbon atoms, --O--, --S--, --SO.sub.2 --, ##STR13## or --C(CF.sub.3).sub.2 --; and each X is independently hydrogen or halogen.
- 6. A composition according to claim 5 wherein A.sup.3 is m-phenylene, R.sup.2 has formula VII, R.sup.4 is isopropylidene and each X is hydrogen.
- 7. A composition according to claim 3 wherein Z is oxygen and A.sup.3 is the bis(4-phenylene)propane radical.
- 8. A composition according to claim 7 wherein A.sup.2 has formula II.
- 9. A composition according to claim 7 wherein A.sup.2 has formula III.
Parent Case Info
This application is a division of application Ser. No. 877,623 filed June 23, 1986, now U.S. Pat. No. 4,695,612 issued Sept. 22, 1987.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4611048 |
Peters |
Sep 1986 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
877623 |
Jun 1986 |
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