Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1982-04-05
1983-06-21
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
252182, 528104, C08G 5962, C08G 5968
Patent
active
043895204
ABSTRACT:
Advancement catalysts selected from the group consisting of formylmethylenetriphenylphosphorane and its phosphonium halide salt precursors, e.g., formylmethyltriphenylphosphonium chloride, confer high reactivity and selectivity on epoxy resin advancement reactions. Advanced epoxy resins are useful in the perparation of coatings of high quality.
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Ciba-Geigy Corporation
Hall Luther A. R.
Nielsen Earl A.
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