Styrene → Benzene, ethenyl-, polymer with 1,3-butadiene

HRID 972304Notes

Reaction equation

HRID 972304 reaction equation
[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:5]=[CH:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.C=CC>C([Al](CC)CC)C.ClC(Cl)(Cl)C(C(Cl)(Cl)Cl)=O.C1(C)C=CC=CC=1>[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:5]=[CH:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1

Participants

7

Reactant 3

HCID 7501StyreneHCID 78451,3-ButadieneHCID 8252Propylene

Product 1

HCID 62697Benzene, ethenyl-, polymer with 1,3-butadieneYield 48%

Reagents, catalysts & solvents 3

HCID 8303HexachloroacetoneCatalystHCID 16682930TriethylaluminumCatalystHCID 1140TolueneSolvent4×

Procedure

In a one liter stainless steel autoclave, in which the temperature is elevated up to 45° C, there are charged a toluene solution of triethylaluminum (3 ml; 3 mmol) and a toluene solution of hexachloroacetone (1.8 ml; 1.8 mmol) while stirring, and anhydrous toluene (400 ml), butadiene (42 g), styrene (56 g), propylene (32 g) and a toluene solution of nickel octylate (1.5 ml; 0.3 mmol) are added thereto. The mixture is reacted at 45° C for 5 hours to execute the polymerization. The stop of the polymerization and the treatment of the reaction mixture are executed as in Example 7 to give liquid butadiene-styrene copolymer (40.8 g) having a viscosity of 102 cp (determined at 30° C by a viscosimeter of E type). The content of styrene in the copolymer is 20.5% by weight.

Workup

  1. customis elevated up to 45° C
  2. customThe mixture is reacted at 45° C for 5 hours
  3. customthe polymerization
  4. customThe stop of the polymerization

Sources & evidence

ORD record
ord-dd38825af2154943acc0f448042142f9
Source dataset
uspto-grants-1977_10
Patent number
US04052473

Reaction notes

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