Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Patent
1989-05-25
1992-04-14
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
562 45, 562 83, 562 91, 562113, 562125, 564 82, 502164, C07C30300, C07C30700, B01J 3100
Patent
active
051050064
ABSTRACT:
The invention is a novel phosphonium salt, useful as an initiator or catalyst in the reaction of oxirane groups in an epoxy resin with aromatic carbonate and/or ester linkages in monomeric, oligomeric, or polymeric carbonates, esters, or estercarbonates.
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Clark Janet Pauline
Siegel Alan
The Dow Chemical Company
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