Claims
- 1. A catalyst system which is particularly useful in synthesizing condensation polymers which is comprised of (1) at least one polymeric agent having pendant diphenylphosphine groups and a bound acid acceptor group and (2) at least one halogenated organic compound.
- 2. A catalyst system as specified in claim 1 wherein said acid acceptor has a pKa of at least 5.
- 3. A catalyst system as specified in claim 2 wherein said acid acceptor is an organic base.
- 4. A catalyst system as specified in claim 3 wherein said organic base has a pKa which is within the range of 5 to 12.
- 5. A catalyst system as specified in claim 1 wherein the acid acceptor group is selected from the group consisting of pyrrolyl groups, imidazolyl groups, pyrazolyl groups, pyridyl groups, pyrazinyl groups, pyimidinyl groups, pyridazinyl groups, indolizinyl groups, isoindolyl groups, cinnolinyl groups, pteridinyl groups, carbazolyl groups, phenanthridinyl groups, acridinyl groups, and phenanthrolinyl groups.
- 6. A catalyst system as specified in claim 1 wherein the polymeric agent having pendant diphenylphosphine groups and bound acid acceptor groups is prepared by polymerizing vinyldiphenylphosphine and 4-vinylpyridine.
- 7. A catalyst system as specified in claim 1 wherein the halogenated organic compound contains at least one carbon atom which has at least 2 halogen atoms bonded directly to it.
- 8. A catalyst system as specified in claim 1 wherein the halogenated organic compound contains at least one carbon atom which has at least 3 halogen atoms bonded directly to it.
- 9. A catalyst system as specified in claim 1 wherein the halogenated organic compound is selected from the group consisting of carbon tetrachloride and carbon tetrabromide.
- 10. A catalyst system as specified in claim 1 wherein the pendant diphenylphosphine groups and bound acid acceptor groups are present in approximately equal molar amounts.
Parent Case Info
This is a division of application Ser. No. 011,464, filed on Feb. 5, 1987, now U.S. Pat. No. 4,804,730.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4258206 |
Pittman et al. |
Mar 1981 |
|
4266085 |
Kim et al. |
May 1981 |
|
4526884 |
Tsou et al. |
Jul 1985 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
11464 |
Feb 1987 |
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