Styrene → Lytron 810

HRID 2082108Notes

Reaction equation

HRID 2082108 reaction equation
[C:1]1(=[O:7])[O:6][C:4](=[O:5])[CH:3]=[CH:2]1.[CH2:8]=[CH:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1>C1(C)C=CC=CC=1>[CH2:8]=[CH:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.[C:4]1(=[O:5])[O:6][C:1](=[O:7])[CH:2]=[CH:3]1

Participants

4

Reactant 2

HCID 7501Styrene2×HCID 7923Maleic Anhydride2×

Product 1

HCID 62707Lytron 810

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A copolymer of 50 mol-% of maleic acid anhydride and 50 mol-% of styrene is prepared by introducing 98 parts by weight of maleic acid anhydride in 400 parts by weight of toluene into a reactor at a temperature of 60° to 70° C. After initiation with 0.7 parts by weight of azoisobutyric acid nitrile, 104 parts by weight of styrene are added within 3 hours at 60° to 70° C. The polymer obtained from the polymerisation precipitates in the reactor and may be filtered off after completed polymerisation and washed. The polymer contains 48.5% by weight of maleic acid anhydride units and has a Staudinger Index in acetone of [μ]=0.22 dl/g.

Workup

  1. customThe polymer obtained from the polymerisation
  2. customprecipitates in the reactor
  3. filtrationmay be filtered off
  4. custompolymerisation
  5. washwashed

Sources & evidence

ORD record
ord-c7bb44704f424cd2bf9ac220332f50c7
Source dataset
uspto-grants-1993_02
Patent number
US05187231

Reaction notes

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