Melamine → Melamine cyanurate

HRID 2058407Notes

Reaction equation

[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[NH:10]1[C:17](=[O:18])[NH:16][C:14](=[O:15])[NH:13][C:11]1=[O:12]>>[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[NH:10]1[C:17](=[O:18])[NH:16][C:14](=[O:15])[NH:13][C:11]1=[O:12]

Participants

Reactant 2

HCID 7955Melamine

HCID 7956Cyanuric acid

Product 1

HCID 93198Melamine cyanurate

Procedure

Mixtures of melamine and cyanuric acid in molar ratios of 2.0:1.0 (Example 17), 1.5:1.0 (Example 18), 1.2:1.0 (Example 19), and 1.0:1.3 (Example 20) were prepared. Each mixture was added to an aqueous monomer solution for forming a polyamide Ny 66/6=90/10 so that the weight of melamine-cyanuric acid mixture may become 6% by weight based on the polyamide composition to be formed. Polymerization of the resulting mixture was carried out in a manner similar to that in Example 1. As shown in Table 6, if the melamine-cyanuric acid mixture is not an equimolar one, the formed polyamide could not reach a polymerization degree suitable for practical use of the composition. The composition of Example 17 was evaluated as a plastic molding material.

Workup

additionEach mixture was added to an aqueous monomer solution

Sources & evidence

ORD record: ord-3c7df36cef4448bda8b904badee5d916
Source dataset: uspto-grants-1982_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04317766

Reaction notes

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