Chemistry of inorganic compounds – Boron or compound thereof – Oxygen containing
Reexamination Certificate
2007-04-24
2007-04-24
McKane, Joseph K. (Department: 1626)
Chemistry of inorganic compounds
Boron or compound thereof
Oxygen containing
C423S592100, C423S179000
Reexamination Certificate
active
10467838
ABSTRACT:
Methods are described for the production of hydrogen-bis(chelato)borates of the general formula H[BL1L2] and of alkali metal-bis(chelato)borates of the general formula M[BL1L2] whereM=Li, Na, K, Rb, CsL1=—OC(O)—(CR1R2)n—C(O)O— or —OC(O)—(CR3R4)—O—where n=0 or 1,R1, R2, R3, R4independently of one another denote H, alkyl, aryl or silyl,L2=—OC(O)—(CR5R6)n—C(O)O— or —OC(O)—(CR7R8)—O—where n=0 or 1,R5, R6, R7, R8independently of one another denote H, alkyl, aryl or silyl,wherein the respective raw materials are mixed in solid form without the addition of solvents and are reacted. Lithium-bis(oxalato)borate, lithium-bis(malonato)borate, caesium-bis-(oxalato)borate, caesium-bis-(malonato)borate and the mixed salts lithium(lactato,oxalato)borate and lithium(glycolato,oxalato)borate for example may be produced in this way.
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Lischka Uwe
Panitz Jan-Christoph
Schade Klaus
Wietelmann Ulrich
Chemetall GmbH
Fulbright & Jaworski L.L.P.
McKane Joseph K.
Shiao Robert
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