Azobisisobutyronitrile → 2-Methylbuta-1,3-diene;styrene

HRID 568327Notes

Reaction equation

HRID 568327 reaction equation
[C:1](O[CH2:7][CH2:8][CH2:9][CH3:10])(=O)[C:2](C)=C.[C:11](O)(=O)[CH:12]=[CH2:13].N([C:23]([CH3:27])([CH3:26])C#N)=NC(C)(C)C#N>C(OCC)(=O)C>[CH2:7]=[CH:8][C:9](=[CH2:10])[CH3:11].[CH2:13]=[CH:12][C:11]1[CH:26]=[CH:23][CH:27]=[CH:2][CH:1]=1

Participants

5

Reactant 3

HCID 6547Azobisisobutyronitrile2×HCID 6581Acrylic AcidHCID 7354Butyl Methacrylate

Product 1

HCID 1599892-Methylbuta-1,3-diene;styrene

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

In a glass reaction bottle was placed 19.0 g butyl methacrylate, 1.0 g acrylic acid, 30 g of ethyl acetate, and 0.06 g of 2,2'-azobis(isobutyronitrile) free radical initiator available under the trade designation "VAZO" 64 from the E. I. DuPont Company. The reaction bottle was purged with nitrogen and sealed. It was placed in a 55° C. bath and tumbled therein for 60 hours to produce a polymer which had an inherent viscosity of 0.58 dl/g. The resulting polymer solution was diluted with 50 g ethyl acetate and knife coated onto a 37 micrometer polyester film to provide a dry coating thickness of 10 micrometers. The coated film was equilibrated for 16 hours and thereafter tested under constant temperature and humidity. Test results for adhesion of an acrylic PSA (Tape A) and a tackified styrene isoprene block copolymer PSA (Tape B) are shown in Table IV.

Workup

  1. customIn a glass reaction bottle
  2. customThe reaction bottle was purged with nitrogen
  3. customsealed
  4. customwas placed in a 55° C.
  5. customfor 60 hours to produce a polymer which
  6. customto provide a dry coating thickness of 10 micrometers

Sources & evidence

ORD record
ord-b32000d5639b4a2fb50ca85e85731ea3
Source dataset
uspto-grants-1988_03
Patent number
US04728571

Reaction notes

Loading…