Sodium Hydroxide → HCID 90000775, compound

HRID 1250731Notes

Reaction equation

HRID 1250731 reaction equation
[CH2:1]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=1[S:19]([OH:22])(=[O:21])=[O:20])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH3:12].[OH-].[Na+:24]>O>[CH3:12][CH2:11][CH2:10][CH2:9][CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][CH2:1][C:13]1[C:14]([S:19]([O-:22])(=[O:21])=[O:20])=[CH:15][CH:16]=[CH:17][CH:18]=1.[Na+:24].[CH2:1]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=1[S:19]([OH:22])(=[O:20])=[O:21])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH3:12]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 25457Dodecylbenzenesulphonic acid

Product 1

HCID 90000775HCID 90000775, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
25 °C

Procedure

Subsequently, the aqueous emulsion containing BA polymer (A-1) was kept at 90° C., and thereto were added 2 parts of dodecylbenzenesulfonic acid (DBSA) and 18 parts of pure water to adjust the system to pH 1.2. The emulsion of silicone rubber-forming component (b) was equally divided into four portions, and the portions were added every 1 hour at a time to the above aqueous emulsion. After the completion of the addition, the system was further stirred for 1 hour, cooled to 25° C. and allowed to stand for 20 hours. Thereafter, the system was adjusted to pH 8.9 with sodium hydroxide to finish the polymerization, thus giving an aqueous emulsion (C-1) containing silicone-rubber particles. The polymerization conversion of the silicone rubber-forming component (b) was 87%. The emulsion (C-1) had a solid content of 24%. The results of evaluation about the amount of emulsifier (SDBS+DBSA) used in the preparation of the emulsion (C-1), number average particle size, variation coefficient in particle size distribution and content of toluene-insoluble matter are shown in Table 1.

Workup

  1. additionSubsequently, the aqueous emulsion containing BA polymer (A-1)
  2. customwas kept at 90° C.
  3. additionthe portions were added every 1 hour at a time to the above aqueous emulsion
  4. additionAfter the completion of the addition
  5. waitto stand for 20 hours
  6. customthe polymerization
  7. customthus giving an aqueous emulsion (C-1)

Sources & evidence

ORD record
ord-d356e02566dd456b8ef2e01156d50c96
Source dataset
uspto-grants-2002_01
Patent number
US06339127B1

Reaction notes

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