Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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B01J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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2540/00
Compositional aspects of coordination complexes or ligands in catalyst systems
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B01J2540/40
Non-coordinating groups comprising nitrogen
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B01J2540/44
being derivatives of carboxylic or carbonic acids, e.g. amide (RC(=O)-NR2, RC(=O)-NR-C(=O)R) , nitrile, urea (R2N-C(=O)-NR2) , guanidino (R2N-C(=NR)-NR2) groups
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B01J2540/448

Catalysts for polycarbonate production
11185853 · 2021-11-30 · ·

The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with catalytic activity tethered to a ligand that is coordinated to the active metal center of the complex.

CATALYSTS FOR POLYCARBONATE PRODUCTION
20190193062 · 2019-06-27 ·

The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with catalytic activity tethered to a ligand that is coordinated to the active metal center of the complex.