Hydrochloric Acid → Resorcinol-formaldehyde resin

HRID 2238345Notes

Reaction equation

HRID 2238345 reaction equation
[Cl-].[Ca+2].[Cl-].[C:4]1([CH:11]=[CH:10][CH:9]=[C:7]([OH:8])[CH:6]=1)[OH:5].Cl.[CH2:13]=[O:14]>C(C(C)=O)C.O>[C:4]1([CH:11]=[CH:10][CH:9]=[C:7]([OH:8])[CH:6]=1)[OH:5].[CH2:13]=[O:14]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 712FormaldehydeHCID 5054ResorcinolHCID 5284359Calcium Chloride

Product 1

HCID 159980Resorcinol-formaldehyde resin

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6569Methyl Ethyl KetoneSolvent

Conditions

Temperature
50 °C

Procedure

After 133 kg of water, 85 kg of calcium chloride, and 111 kg of resorcinol were placed in a 500 L acid-resistant reaction vessel and dissolved at 50° C., 45 kg of methyl ethyl ketone and 0.45 kg of 35% hydrochloric acid were charged into the reaction vessel. While the reaction system was maintained at 50° C., 53 kg of 37% formalin was added dropwise over a period of 30 minutes and, after the completion of the dropwise addition, the mixture was further stirred for 30 minutes to cause a liquid-liquid heterogeneous reaction to proceed. While maintaining the temperature of the reaction system, it was allowed to stand and separate into two layers, and then an underlying aqueous phase was drawn off. The organic phase was diluted with 200 kg of methyl ethyl ketone and then 100 kg of water was added thereto. Furthermore, while maintaining the same temperature, the reaction system was stirred for 30 minutes and, after allowing to stand, separated into two layers and then the aqueous layer was drawn off to obtain a methyl ethyl ketone solution of a resorcinol-formalin resin.

Workup

  1. dissolutiondissolved at 50° C.
  2. additionafter the completion of the dropwise addition
  3. customa liquid-liquid heterogeneous reaction
  4. temperatureWhile maintaining the temperature of the reaction system, it
  5. customseparate into two layers
  6. additionThe organic phase was diluted with 200 kg of methyl ethyl ketone
  7. addition100 kg of water was added
  8. temperatureFurthermore, while maintaining the same temperature
  9. stirringthe reaction system was stirred for 30 minutes
  10. customseparated into two layers

Sources & evidence

ORD record
ord-1677074d336b48ca9eb878313206aec8
Source dataset
uspto-grants-2010_05
Patent number
US07718752B2

Reaction notes

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