Method of producing polyether resins using phase transfer catalysts
AssigneeKanegafuchi Kagaku Kogyo Kabushiki Kaisha
InventorsKazuya Yonezawa, Junichi Ishizu, Miyuki Matsuura
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Abstract
A novel polyether resin having the repeating units of the formula: ##STR1## wherein Ar is a divalent aromatic group, and R.sup.1 and R.sup.2 are divalent aliphatic hydrocarbon groups having 1 to 4 carbon atoms, and method of producing same wherein alkylene dihalide and alkali metal salts of bifunctional phenols are reacted in the presence of a phase transfer catalyst. The novel resin may be used, for example, as a film sheet or as an agent for improving the impact strength of polystyrene.
Claims7
A method of manufacturing polymers having the repeating units of the formula:
- ##STR12## which method comprises reacting alkali metal salts of bifunctional phenols of the formula:
- MO--Ar--OM'
- wherein M and M' are alkali metals and Ar is a divalent aromatic group having 6 to 30 carbon atoms, with an alkylene dihalide having the formula:
- ##STR13## wherein X and Y are halogens, and R.sup.1 and R.sup.2 are divalent aliphatic hydrocarbon groups having from 1 to 4 carbon atoms and Ar is a divalent aromatic group having 6 to 30 carbon atoms, in the presence of a phase transfer catalyst.
A method of manufacturing polyether polymers having an intrinsic viscosity of at least 0.1 and having the repeating units of the formula:
- ##STR14## wherein R.sup.1 and R.sup.2 are divalent aliphatic hydrocarbon groups having 1 to 4 carbon atoms and Ar is a divalent aromatic group having 6 to 30 carbon atoms;
- said method comprising the steps of
- (A) dissolving 0.9 to 1.2 mole of bifunctional phenol compound of the formula:
- ##STR15## wherein X is ##STR16## --SO.sub.2 --;
- --CH.sub.2 --;
- --O--;
- or --S--;
- "p" and "q" are each integer 0 or 1;
- in an aqueous solution of caustic soda or caustic potash;
- (B) reacting said mixture of step (A) with 1 mole of alkylene dihalide having the formula:
- ##STR17## wherein X and Y are halogens, and R.sup.1 and R.sup.2 are as stated above, and Ar is as stated above;
- in the presence of 0.001 to 0.20 mole of a phase transfer catalyst selected from the group consisting of oil soluble quaternary ammonium salt, quaternary phosphonium salt;
- crown ether and mixtures thereof;
- and utilizing an organic solvent selected from the group consisting of toluene, xylene, methylene chloride, chlorobenzene and orthodichlorobenzene;
- said reaction being at a temperature of between 0.degree. to 100.degree. C., and for a period of from 5 to 20 hours.
Dependencies are inferred from the claim text.