Formaldehyde → Resorcinol-formaldehyde resin

HRID 1159352Notes

Reaction equation

HRID 1159352 reaction equation
[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].C=O.[C:11]([O-])([O-])=[O:12].[Na+].[Na+]>O>[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].[CH2:11]=[O:12]

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 5054ResorcinolHCID 10340Sodium Carbonate

Product 1

HCID 159980Resorcinol-formaldehyde resin

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

22 g of resorcinol, 20 ml of formaldehyde solution (37% by volume in water), 0.014 g of Na2CO3 and 82 ml of H2O are stirred at room temperature to give a resorcinol/formaldehyde sol and subsequently aged for 5 days. E-Spheres™ hollow spheres having grain sizes of from 20 to 200 μm were mixed with the aged RF sol in a proportion of 30% by volume in a mixer and dried at 40° C. with exclusion of air. The measured thermal conductivity had a value of 0.27 Wm−1K−1.

Sources & evidence

ORD record
ord-e8a50d5660b7477b96c76b25f33669f8
Source dataset
uspto-grants-2010_10
Patent number
US07812059B2

Reaction notes

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