Polymeric substrate containing mercapto and sulfonic groups

Details Polymeric substrate containing mercapto and sulfonic groups Polymeric substrate containing mercapto and sulfonic groups

1998-04-27

1999-08-17

Henderson, Christopher

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

502400, C08F 836, C08F 1208

Patent

active

059394943

ABSTRACT:
A catalyst useful for the condensation of an aldehyde or ketone starting material with a phenol is an insoluble mercaptosulfonic acid compound. The heterogeneous catalysts comprise catalytically-active species represented by the formula: ##STR1## L is an optional linking group and -- is a bond, which catalytically-active species is attached by the bond -- to an insoluble organic or inorganic support;

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