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US 4,291,145 AGranted
Antimony halide-organic phosphate ester cationic polymerization catalysts
AssigneeMinnesota Mining and Manufacturing Company
InventorsRobert J. Balchunis, Stephen W. Bany
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Abstract
The complex formed between a pentavalent antimony halide and an organic phosphate ester has been found to be an effective catalyst for cationic polymerization reactions.
Claims5
A method for polymerizing a cationically polymerizable organic monomer comprising the steps:
- (a) providing a latent polymerizable composition consisting of a solution of said organic monomer in a polar organic solvent and an effective amount of an antimony pentahalide-organic phosphate ester complex catalyst of the formula:
- ##STR16## wherein:
- R.sup.1 is independently selected from alkyl groups of 1 to 18 carbon atoms,
- (b) removing said solvent to form a residue, and
- (c) heating the resulting residue to a temperature in the range of 50.degree. to 150.degree. C. to effect curing of said organic monomer.
2 more elements
Dependencies are inferred from the claim text.