Styrene → Prop-2-enenitrile--ethenylbenzene (1/1)

HRID 1979021Notes

Reaction equation

HRID 1979021 reaction equation
C(OC(=O)C=C)CCC.[CH2:10]=[CH:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.[C:18](#[N:21])[CH:19]=[CH2:20]>C(C(C)=O)C>[C:18](#[N:21])[CH:19]=[CH2:20].[CH2:10]=[CH:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1

Participants

5

Reactant 3

HCID 7501Styrene2×HCID 7855Acrylonitrile2×HCID 8846Butyl Acrylate3×

Product 1

HCID 62696Prop-2-enenitrile--ethenylbenzene (1/1)

Reagents, catalysts & solvents 1

HCID 6569Methyl Ethyl KetoneSolvent

Procedure

The butylacrylate rubber grafted with styrene and acrylonitrile (BA-g-SAN) was prepared by polymerizing butyl acrylate to form a polybutylacrylate rubber using conventional emulsion polymerization. The rubber was crosslinked during polymerization such that the swelling index of the rubber in methyl ethyl ketone at 25° C. was about 10. The rubber was grafted by polymerizing a 70/30 weight ratio of styrene and acrylonitrile (120 parts total) in the presence of 100 parts of the rubber. The resulting grafted rubber had a weight average particle size diameter (Dw) of about 0.2 microns with a range of from about 0.08 to about 0.4 microns. The grafted rubber contained about 45% by weight of butyl acrylate and about 55S by weight of styrene acrylonitrile copolymer (SAN) present as grafted polymer and as free ungrafted matrix copolymer formed during the graft polymerization procedure.

Workup

  1. customto form a polybutylacrylate rubber
  2. customemulsion polymerization

Sources & evidence

ORD record
ord-9728ddf717d54cc8acbe47609f0896f9
Source dataset
uspto-grants-2001_05
Patent number
US06239221B1

Reaction notes

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