Formaldehyde → Formaldehyde melamine silicate

HRID 258529

Reaction equation

[Si:1]([OH:5])([OH:4])([OH:3])[OH:2].[N:6]1[C:13]([NH2:14])=[N:12][C:10]([NH2:11])=[N:9][C:7]=1[NH2:8].[CH2:15]=[O:16]>>[Si:1]([OH:5])([OH:4])([OH:3])[OH:2].[N:6]1[C:13]([NH2:14])=[N:12][C:10]([NH2:11])=[N:9][C:7]=1[NH2:8].[CH2:15]=[O:16]

Participants

Reactant 2

HCID 712Formaldehyde

HCID 69385141Melamine silicate2×

Product 1

HCID 131710831Formaldehyde melamine silicate

Procedure

Moist silicic acid gel containing about 1 mol of slicon dioxide and one mol of malamine are mixed, sodium carbonate is added until the pH is 8 to 10.5, then heated to 70° to 260° C. for 20 to 90 minutes, while agitating, thereby producing fine granules of melamine silicate. The said melamine silicate is added to about 2 mols of aqueous formaldehyde, heated to 70° to 150° for 30 to 120 minutes, while agitating, and the melamine silicate goes into solution. On further heating, a white, soft, granular resin, poly (formaldehyde melamine silicate) is produced.

Workup

temperatureheated to 70° to 150° for 30 to 120 minutes

Sources & evidence

ORD record: ord-89934f10abb4433ab4c9dd043a27f527
Source dataset: uspto-grants-1977_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04033935

Linked notes

Loading…