Trisstannoxanes useful for polymerizing macrocyclic poly(alkylen

Details Trisstannoxanes useful for polymerizing macrocyclic poly(alkylen Trisstannoxanes useful for polymerizing macrocyclic poly(alkylen

1994-06-20

1995-01-31

Acquah, Samuel A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549210, 549212, C07F 722

Patent

active

053860373

ABSTRACT:
Novel trisstannoxanes are prepared by the reaction of a dialkyltin oxide with a trihydroxy compound such as 1,1,1-tris(hydroxymethyl)propane. They may be employed as catalysts for the preparation of branched polyesters from macrocyclic polyester oligomers. They are less susceptible than previously known catalysts to the presence of acidic impurities in the oligomer compositions.

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patent: 5231161 (1993-07-01), Brunelle et al.
patent: 5321117 (1994-06-01), Brunelle et al.
Liu et al., Polymer Preprints, Am. Chem. Soc., 33(1), 1111-1112 (1993).

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