Hydrochloric Acid → HCID 45049617, compound

HRID 1859366Notes

Reaction equation

HRID 1859366 reaction equation
[C:1]([OH:10])(=[O:9])[C:2]1[C:3](=[CH:5][CH:6]=[CH:7][CH:8]=1)[OH:4].[CH2:11]=[O:12].Cl>O>[C:1]([OH:10])(=[O:9])[C:2]1[C:3](=[CH:5][CH:6]=[CH:7][CH:8]=1)[OH:4].[CH2:11]=[O:12]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 338Salicylic AcidHCID 712Formaldehyde

Product 1

HCID 45049617HCID 45049617, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
95 °C

Procedure

In a reactor fitted with a condenser, addition funnel and a mechanical stirrer, deionized water (300 g) is heated to 95° C. At this temperature, a mixture of powdered salicylic acid (40 g) and boric anhydride (0.2 g) is added. Aqueous formaldehyde (40%, 35 mL), pre-acidified with hydrochloric acid (6.5 mL, 1.19 density), is then added over 15 minutes. During the addition, the reaction temperature is maintained at 90-100° C. The reaction mixture is stirred for 60 minutes at 95° C. and then cooled to room temperature. The resulting polymer precipitate is filtered and dissolved in water (200 mL) containing 50% aqueous sodium hydroxide (26 mL) for performance testing.

Workup

  1. customIn a reactor fitted with a condenser, addition funnel and a mechanical stirrer
  2. additionis added
  3. additionDuring the addition
  4. temperaturecooled to room temperature
  5. filtrationThe resulting polymer precipitate is filtered
  6. dissolutiondissolved in water (200 mL)
  7. additioncontaining 50% aqueous sodium hydroxide (26 mL) for performance testing

Sources & evidence

ORD record
ord-bab2de75af89468693451c9528601ea2
Source dataset
uspto-grants-2003_03
Patent number
US06527959B1

Reaction notes

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