Formaldehyde → Benzoguanamine formaldehyde

HRID 990968

Reaction equation

HRID 990968 reaction equation
[CH:1]1[CH:2]=[CH:3][C:4]([C:7]2[N:8]=[C:9]([NH2:14])[N:10]=[C:11]([NH2:13])[N:12]=2)=[CH:5][CH:6]=1.C=O.[C:17](=O)([O-])[O-:18].[Na+].[Na+]>O>[CH:1]1[CH:6]=[CH:5][C:4]([C:7]2[N:8]=[C:9]([NH2:14])[N:10]=[C:11]([NH2:13])[N:12]=2)=[CH:3][CH:2]=1.[CH2:17]=[O:18]

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 7064BenzoguanamineHCID 10340Sodium Carbonate

Product 1

HCID 172081Benzoguanamine formaldehyde

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
90 °C

Procedure

A 4-necked flask equipped with a stirrer, a reflux condenser and a thermocouple was charged with 150 parts of benzoguanamine, 50 parts of paraformaldehyde (formaldehyde content 95%) and 120 parts of water. The pH of the mixture was adjusted to 8.5 with a 10% aqueous solution of sodium carbonate. While agitating this mixture, its temperature was raised to 90° C., and its reaction was carried out for 5 hours to obtain an aqueous liquid of a soluble and fusible benzoguanamine-formaldehyde prepolymer. The prepolymer thus obtained is cooled to 50° C. and rapidly mixed with 100 part of acetone which has also been warmed to 500° C. The product is mixed with 3.0 parts of fluorescent dye Solvent Yellow 135 at temperature 40-50° C.

Workup

  1. customA 4-necked flask equipped with a stirrer, a reflux condenser
  2. customits reaction

Sources & evidence

ORD record
ord-0fa91092043949bd85af7eead31be5f9
Source dataset
uspto-grants-2002_10
Patent number
US06462128B1

Linked notes

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