Claims
- 1. In a gas phase process for catalytically polymerizing carbon monoxide and at least one olefinically unsaturated hydrocarbon in the presence of a catalyst comprising a compound of a Group VIII metal, an anion of a non-hydrohalogenic acid having a pK.sub.a of less than about six, and a polydentate ligand to form a polyketone, wherein the improvement comprises polymerizing the carbon monoxide and hydrocarbon in the presence of an amount of liquid, non-polymerizable diluent which is effective in increasing the amount of polyketone formed and hydrogen is added while polymerizing the carbon monoxide and hydrocarbon to reduce the molecular weight and increase the bulk density and thermal stability of the polyketone.
- 2. A process as claimed in claim 1 wherein the catalyst is placed on a high surface area support.
- 3. A process as claimed in claim 1 wherein the diluent is acetone.
- 4. A process as claimed in claim 2 wherein the diluent is acetone.
- 5. A polyketone, formed by the process of claim 1, which has a bulk density of above about 0.60 g/ml.
- 6. A polyketone, formed by the process of claim 4, which has a bulk density of above about 0.60 g/ml.
Parent Case Info
This is a division of application Ser. No. 07/898,627 filed Jun. 15, 1992, now abandoned.
US Referenced Citations (15)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0248483 |
Jan 1991 |
EPX |
0443687 |
Aug 1991 |
EPX |
0506168 |
Sep 1992 |
EPX |
0520584 |
Dec 1992 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
898627 |
Jun 1992 |
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