Polyketone polymerization catalyst
Provided are a novel polyketone polymerization catalyst and a method of preparing a ligand, which can reduce production costs and can enable commercial mass synthesis by using ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine) as a ligand constituting the polykeytone polymerization catalyst, the ligand having a simple structure and a small molecular weight while having high activity.
1. A polyketone polymerization catalyst, consisting of:
(A) a metal ion;
(B) ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine) represented by following Formula 1 as a ligand; and
(C) an acid, wherein a molar ratio of component (A) and component (B) to component (C) is 1:7 to 1:20
2. The polyketone polymerization catalyst of claim 1 , wherein the metal ion of (A) is composed of a compound of Ni and Cu.
3. The polyketone polymerization catalyst of claim 1 , wherein the acid of (C) is an inorganic acid having a pKa of 4 or less.
4. The polyketone polymerization catalyst of claim 3 , wherein the acid of (C) is a perchloric acid, a sulfuric acid, a nitric acid, a phosphoric acid, a heteropoly acid, tetrafluorobroic acid, a hexafluorophosphoric acid, or a fluorosilicic acid.
5. The polyketone polymerization catalyst of claim 1 , wherein the acid of (C) is a boron compound.
6. The polyketone polymerization catalyst of claim 5 , wherein the acid of (C) is trispentafluorophenyl borane or trisphenylcarbeniumtetrakis (pentafluorophenyl) borate.