Claims
- 1. A catalyst system which is particularly useful in synthesizing condensation polymers which is comprised of (1) at least one polymeric agent having bound acid acceptor groups and (2) at least one triphenylphosphine dihalide.
- 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 has a pKa which is within the range of 5 to 12.
- 4. A catalyst system as specified in claim 1 wherein the polymeric agent having bound acid acceptor groups is poly(4-vinylpyridine).
- 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, pyrimidinyl 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 triphenylphosphine dihalide is selected from the group consisting of triphenylphosphine dichloride and triphenylphosphine dibromide.
- 7. A catalyst system as specified in claim 1 wherein the polymeric agent having bound acid acceptor groups is poly(4-vinylpyridine) and wherein the triphenylphosphine dihalide is triphenylphosphine dichloride.
- 8. A catalyst system as specified in claim 4 wherein the triphenylphosphine dihalide is triphenylphosphine dibromide.
- 9. A catalyst system as specified in claim 1 wherein the polymeric agent having bound acid acceptor groups is poly(4-vinylimidazole).
- 10. A catalyst system as specified in claim 1 wherein the polymeric agent having bound acid acceptor groups is poly(2-vinylimidazole).
- 11. A catalyst system as specified in claim 1 wherein the polymeric agent having bound acid acceptor group is poly(5-vinylimidazole).
- 12. A catalyst system as specified in claim 1 wherein the acid acceptor groups in the polymeric agent have the structural formula: ##STR13##
- 13. A catalyst system as specified in claim 12 wherein the triphenylphosphine dihalide is triphenylphosphine dichloride.
Parent Case Info
This is a divisional of application Ser. No. 07/344,160, filed on Apr. 27, 1989, and now U.S. Pat. No. 4,923,839, which is a divisional application of application Ser. No. 07/180,924, filed on Apr. 11, 1988 (now issued as U.S. Pat. No. 4,843,053), which was a divisional application of application Ser. No. 07/011,464, filed on Feb. 5, 1987 (now issued as U.S. Pat. No. 4,804,730).
US Referenced Citations (8)
Non-Patent Literature Citations (1)
Entry |
Shinichiro Kitayama et al, "Synthesis of Aromatic Polyesters by Direct Polycondensation with Triphenylphosphine Dichloride", 1984. |
Divisions (3)
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Number |
Date |
Country |
Parent |
344160 |
Apr 1989 |
|
Parent |
180924 |
Apr 1988 |
|
Parent |
11464 |
Feb 1987 |
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