Deactivation of phosphonium salt catalyst

Details Deactivation of phosphonium salt catalyst Deactivation of phosphonium salt catalyst

1986-04-30

1987-09-08

Nielsen, Earl

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

502164, 528365, 528374, 568 10, 568 11, C08G 5968

Patent

active

046925040

ABSTRACT:
A method is disclosed for deactivating a hydrocarbyl phosphonium salt catalyst of an epoxy resin fusion reaction. The method involves contacting the hydrocarbyl phosphonium salt catalyst with a sulfonic acid, such as p-toluenesulfonic acid or methane sulfonic acid. The method is particularly suited for deactivation of moisture-resistant phosphonium salts such as methylene bis(triphenyl phosphonium halide)s.

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