Claims
- 1. A process for preparing a linear alternating polymer having the general formula ##STR7## wherein Z is at least one moiety selected from SO.sub.2 or CO, G is the moiety of at least one ethylenically unsaturated hydrocarbon of at least 2 carbon atoms polymerized through the ethylenic unsaturation, n is an integer of at least 1, and m is an integer of zero or greater, which process comprises contacting sulfur dioxide, ethylene, with or without carbon monoxide, and with or without at least one ethylenically unsaturated hydrocarbon of at least 3 carbon atoms, in the presence of a catalyst obtained from (1) a compound of a Group VIII metal selected from palladium, cobalt and nickel, (2) a bidentate ligand of the general formula ##STR8## wherein each M is a Group Va element selected from the group consisting of phosphorus, arsenic, and antimony, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 independently are hydrocarbon or substituted hydrocarbon wherein the substituents are polar, R is a divalent organic bridging group of at least two carbon atoms, and (3) an anion of a non-hydrohalogenic acid having a pKa of less than 6, under conditions effective to prepare a linear alternating polymer.
- 2. The process of claim 1 wherein the ethylenically unsaturated hydrocarbon compound is at least one of ethylene or propylene.
- 3. The process of claim 2 wherein the acid is selected from the group consisting of sulfonic acids having a pKa of less than 2 and carboxylic acids having a pKa of less than 2.
- 4. The process of claim 3 wherein the acid is selected from the group consisting of para-toluenesulfonic acid and trifluoroacetic acid.
- 5. The process of claim 3 wherein M is phosphorus.
- 6. The process of claim 5 wherein the Group VIII metal is palladium.
- 7. The process of claim 6 wherein the palladium compound is a palladium salt of a carboxylic acid.
- 8. The process of claim 5 wherein R is a bridging group of three carbon atoms and R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are selected from the group consisting of phenyl and substituted phenyl.
- 9. The process of claim 1 wherein the bidentate ligand is selected from the group consisting of 1,3-bis(diphenylphosphine)propane and 2-methyl-2-(methyldiphenylphosphine)-1,3-bis(diphenylphosphine)propane.
- 10. The process of claim 6 wherein Z is CO and G is ethylene.
- 11. The process of claim 6 wherein Z is SO.sub.2 and G is propylene.
- 12. The process of claim 1 wherein m is 0.
- 13. The process of claim 9 wherein contacting temperature is from about 20.degree. to about 200.degree. C. and contacting pressure is from about 1 to about 200 bar.
- 14. A process for preparing a linear alternating polymer having units of sulfur dioxide, ethylene, and carbon monoxide, which process comprises contacting sulfur dioxide, ethylene, and carbon monoxide in the presence of a catalyst obtained from (1) a palladium compound, (2) a bidentate ligand of the general formula ##STR9## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 independently are hydrocarbon or substituted hydrocarbon wherein the substituents are polar, R is a divalent organic bridging group of at least two carbon atoms, and (3) an anion of a nonhydrohalogenic acid having a pKa of less than 2, under conditions effective to prepare a linear alternating polymer.
- 15. The process of claim 14 wherein the acid is para-toluenesulfonic acid.
- 16. The process of claim 15 wherein the bidentate ligand is selected from the group consisting of 1,3-bis(diphenylphosphine)propane and 2-methyl-2-(methyldiphenylphosphine)-1,3-bis(diphenylphosphine)propane.
- 17. A process for preparing a linear alternating polymer having units of sulfur dioxide, ethylene, and propylene, which process comprises contacting sulfur dioxide, ethylene, and propylene in the presence of a catalyst obtained from (1) a palladium compound, (2) a bidentate ligand selected from 1,3-bis(diphenylphosphine)propane and 2-methyl-2-(methyldiphenylphosphine)-1,3-bis(diphenylphosphine)propane, and (3) an anion of an oxygen containing acid having a pKa of less than 2, under conditions effective to prepare a linear alternating polymer.
- 18. The process of claim 17 wherein the acid is trifluoroacetic acid and the bidentate ligand is 1,3-bis(diphenylphosphine)propane.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8502817 |
Oct 1985 |
NLX |
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CROSS REFERENCE TO RELATED CASE APPLICATIONS
This is a continuation-in-part of application Ser. No. 918,422, filed Oct. 14, 1986, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (2)
Number |
Date |
Country |
220765 |
May 1987 |
EPX |
2058074 |
Apr 1981 |
GBX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
918422 |
Oct 1986 |
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