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H Roemmler A G
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H Roemmler A G
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Priority to ES123728ApriorityCriticalpatent/ES123728A1/en
Publication of ES123728A1publicationCriticalpatent/ES123728A1/en
ES123728A1931-08-031931-08-03
Process for the manufacture of condensation products of thiourea or mixtures of thiourea and urea with formic aldehyde.
ExpiredES123728A1
(en)
Process for the manufacture of water-soluble condensation products, consisting of reversible gelatins composed of urea or thiourea or their respective derivatives or mixtures and of formaldehyde in solid form and their solutions.
A process for the manufacture of condensation products of carbamides, thiocarbamides and their derivatives, with aldehyde and, in particular, formaldehyde.