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

HRID 1076435Notes

Reaction equation

HRID 1076435 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(C1C=CC=CC=1C=C)=C.C([O-])(=O)CCCCCCC/C=C\CCCCCCCC.[K+].[O-]O.C(C1C=CC=CC=1C(C)C)(C)C.C(S([O-])=O)O.[Na+].S([O-])[O-].C=O.[Na+].[Na+]>[Fe].O>[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

10

Reactant 7

HCID 7501StyreneHCID 78451,3-ButadieneHCID 666661,2-DiethenylbenzeneHCID 21225536CID 21225536HCID 23665571Potassium OleateHCID 23689980Sodium Formaldehyde SulfoxylateHCID 57376481Diisopropyl benzene hydroperoxide

Product 1

HCID 62697Benzene, ethenyl-, polymer with 1,3-butadiene

Reagents, catalysts & solvents 2

HCID 23925IronCatalystHCID 962WaterSolvent

Procedure

Into a stainless steel autoclave of 10-liter capacity having an agitator, there were charged 48 parts by weight of butadiene, 12 parts by weight of styrene, 0.2 part by weight of divinyl benzene, and 200 parts by weight of water containing therein 0.9 part by weight of potassium oleate as an emulsifier, 0.12 part by weight of diisopropyl benzene hydroperoxide, and a very small amount of redox assistants such as Rongalite (a trademark for sodium formaldehyde sulfoxylate), iron, and so forth, after which the emulsion-polymerization was conducted at a temperature of 45°C for 17 hours to obtain a rubber latex of butadiene-styrene copolymer.

Sources & evidence

ORD record
ord-ca4dc48e43a3452ba433d3fe7e580b4e
Source dataset
uspto-grants-1976_05
Patent number
US03956424

Reaction notes

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