Copolymerization of formaldehyde and cyclic ethers using initiators based upon tetraphenyl borates
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United States of America Patent
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Jun 6, 2000
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N/A
app pub date -
Oct 21, 1998
filing date -
Oct 24, 1997
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Expired
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Abstract
This invention concerns a process for the copolymerization of formaldehyde with cyclic ethers, the process comprising combining in a hydrocarbon solvent a cyclic ether, a cationic initiator comprising an anion formed from tetraphenyl borate derivatives, and mixtures thereof, and a cation, and anhydrous formaldehyde. These initiators provide high activity, high cyclic ether incorporation rates, and stability while minimizing the production of by-products.
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