Isopropanol → Sodium styrene sulfonate styrene

HRID 2179836Notes

Reaction equation

HRID 2179836 reaction equation
C(O)(C)C.[CH2:5]=[CH:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.[CH:13]([S:21]([O-:24])(=[O:23])=[O:22])=[CH:14][C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.[Na+:25].Cl.Cl.N(C(C)(C)C(N)=N)=NC(C)(C)C(N)=N>O>[CH2:5]=[CH:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.[CH:13]([S:21]([O-:24])(=[O:22])=[O:23])=[CH:14][C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.[Na+:25]

Participants

6

Reactant 4

HCID 3776IsopropanolHCID 7501StyreneHCID 763442,2'-Azobis(2-methylpropanimidamide) dihydrochlorideHCID 53627496Sodium styrenesulfonate

Product 1

HCID 86658015Sodium styrene sulfonate styrene

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A 1 L four-necked flask was charged with 180 g of isopropyl alcohol (manufactured by Kishida Chemical Co., Ltd.), 370 g of ion exchanged water, 5 g of styrene (manufactured by Kishida Chemical Co., Ltd.), and 45 g of sodium styrene sulfonate (manufactured by Wako Pure Chemical Industries, Ltd.), and 7.2 g of 2,2′-azobis(2-methylpropionamidine)dihydrochloride (V-50, manufactured by Wako Pure Chemical Industries, Ltd.) was added as an initiator. Of this mixture, 101.4 g (20 wt % of the whole reaction liquid) was transferred to a 200 mL dropping funnel, and added dropwise over two hours at 83±2° C., further aged for two hours, and the solvent was thereafter removed under reduced pressure to give styrene/sodium styrene sulfonate copolymer (10/90 mol %) as white powder. The weight-average molecular weight of this copolymer was 7100.

Workup

  1. additionwas added as an initiator
  2. customOf this mixture, 101.4 g (20 wt % of the whole reaction liquid)
  3. additionadded dropwise over two hours at 83±2° C.
  4. customthe solvent was thereafter removed under reduced pressure

Sources & evidence

ORD record
ord-0051e99d0cce4ed7804d0d02831ad135
Source dataset
uspto-grants-2015_06
Patent number
US09070399B2

Reaction notes

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