Alpha-Methylstyrene → Ethenylbenzene--(prop-1-en-2-yl)benzene (1/1)

HRID 1200197Notes

Reaction equation

HRID 1200197 reaction equation
[CH3:1][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:3].[CH2:10]=[CH:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1>>[CH3:3][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:1].[CH2:10]=[CH:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1

Participants

3

Reactant 2

HCID 7407Alpha-MethylstyreneHCID 7501Styrene

Product 1

HCID 165735Ethenylbenzene--(prop-1-en-2-yl)benzene (1/1)

Procedure

A 50:50 weight ratio copolymer of alpha-methylstyrene and styrene is made by means of continuous anionic polymerization so as to have a 195,000 Mw and a Mw /Mn of 2.2. 2884.1 grams of the anionically polymerized copolymer are dried mixed with 941.1 grams of the grafted rubber/ungrafted rubber mixture from Example 2. The mixture is fed to a Baker Perkins MP mixer compounding line. The compounding section is operated at 400 rpm and the extruder is run at 110 rpm. The melt temperatures are 203°, 207°, 203° and 211° C. in zone 1, zone 2, the extruder and the die, respectively. The compounding line is fed at a rate of about 20 pounds per hour of polymer-rubber blend.

Workup

  1. custom2884.1 grams of the anionically polymerized copolymer are dried
  2. additionmixed with 941.1 grams of the grafted rubber/ungrafted rubber mixture from Example 2
  3. customare 203°, 207°, 203° and 211° C. in zone 1, zone 2

Sources & evidence

ORD record
ord-56cbeb86ab3b42d390b1edb433e7fda8
Source dataset
uspto-grants-1990_02
Patent number
US04904730

Reaction notes

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