Continuous process for manufacturing substantially fully methyla

Details Continuous process for manufacturing substantially fully methyla Continuous process for manufacturing substantially fully methyla

1977-11-17

1981-10-06

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25170

Patent

active

042936926

ABSTRACT:
The manufacture of a substantially fully methylated, substantially fully methylolated melamine composition is carried out by a continuous process in which the methylolation of melamine is conducted in two stages, the first stage being effected at an acidic pH and the second stage being effected at an alkaline pH. The reaction mixture is then concentrated and reacted with methanol after which all of the unreacted volatiles and precipitated salts are removed to provide the product composition.

REFERENCES:
patent: 2645625 (1953-07-01), Bonzagni
patent: 3488350 (1970-01-01), Donaldson
patent: 3824232 (1974-07-01), Pusch et al.

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