Process for condensing at least one epoxide on at least one cycl

Details Process for condensing at least one epoxide on at least one cycl Process for condensing at least one epoxide on at least one cycl

1989-12-07

1991-03-05

Nielsen, Earl

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528365, C08G 6342, C08G 6358

Patent

active

049979108

ABSTRACT:
The invention relates to a process for condensing at least one epoxide on at least one cyclic anhydride of a dicarboxylic acid in the presence of a catalyst consisting of at least one titanium peroxidic complex of the peroxo type of the A form ##STR1## Said process allows to obtain a perfectly alternate polyester.

REFERENCES:
patent: 3337511 (1967-08-01), Matsuura et al.
patent: 4116944 (1978-09-01), Hill et al.
patent: 4125524 (1978-11-01), Hill et al.
patent: 4526957 (1985-07-01), Matz
patent: 4565845 (1986-01-01), Inoue et al.
Mimoun, H. et al., "Novel Unusually Stable Peroxotitanium (IV) Compounds, Molecular and Crystal Structure of Peroxobis(Picolinato)(Hexamethylphosphoric Triamide)Titanium(IV)", Inorg. Chem., vol. 21, pp. 1303-1306 (1982).

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