Hydrogen Peroxide → Adipate acetate

HRID 353006

Reaction equation

HRID 353006 reaction equation
[OH-].[Na+].OO.[C:5]1(=[O:13])[O:12][C:10](=[O:11])[CH2:9][CH2:8][CH2:7][CH2:6]1.[C:14]([O:17]C(=O)C)(=[O:16])[CH3:15].S(=O)(=O)(O)O>O>[C:5]([O-:12])(=[O:13])[CH2:6][CH2:7][CH2:8][CH2:9][C:10]([O-:16])=[O:11].[C:14]([O-:17])(=[O:16])[CH3:15]

Participants

7

Reactant 5

HCID 784Hydrogen PeroxideHCID 1118Sulfuric AcidHCID 7918Acetic Anhydride3×HCID 14798Sodium Hydroxide2×HCID 567658Adipic anhydride

Product 1

HCID 18627148Adipate acetate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

The adipate/acetate of amylopectin potato starch was prepared using a 1:20 mixture. 810 gram dry starch was suspended in water to 39% suspension. The pH was adjusted to 8.5 with a 4.4% (w/w) sodium hydroxide solution and 1.3 ml of 30% of H2O2 solution were added. Then 6 g of 1:20 adipic anhydride reagent was added drop wise keeping the pH at 8.5 with a 4.4% (w/w) sodium hydroxide solution. Afterwards 41 grams of acetic anhydride was added drop wise to a pH 8.5. The acetic anhydride reaction was performed in approx. 1.5 hours. After the acetic anhydride dosage the suspension was stirred for 10 minutes at pH 8.5. Then the suspension was neutralised with sulphuric acid to pH 5.5 and the final product was dewatered, washed and dried using methods known to the art.

Workup

  1. additionwere added
  2. washwashed
  3. customdried

Sources & evidence

ORD record
ord-98ce9fa095b24ca291c483f835c38b0b
Source dataset
uspto-grants-2004_06
Patent number
US06749880B1

Linked notes

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