Polymer-related chemicals

Azo polymerization initiators

An azo polymerization initiator is a compound having an azo group (R-N=N-R'), which decomposes with heat and/or light, and forms carbon radical. The formed carbon radical is excellent in reactivity, and progresses polymerization and halogenation reactions of different types of vinyl monomers.

Water soluble Azo initiatorswater soluble

VA-086water soluble

CAS RN® : 61551-69-7

  • Potential for introducing a hydroxyl into the terminus of polymer
  • 10 Hour half-life decomposition temperature: 86℃
Structural formula of VA-086 View

V-50water soluble

CAS RN® : 2997-92-4

  • Used for superabsorbent polymer and flocculants
  • 10 Hour half-life decomposition temperature: 56℃(in water)
Structural formula of V-50 View

VA-044water soluble

CAS RN® : 27776-21-2

  • Non-nitrile water-soluble azo initiator having low decomposition temperature
  • 10 Hour half-life decomposition temperature: 44℃(in water)
Structural formula of VA-044 View

V-501water soluble

CAS RN® : 2638-94-0

  • Non-halogen water-soluble azo initiator
  • 10 Hour half-life decomposition temperature: 63℃ (DMF)
Structural formula of V-501 View

VA-061water soluble

CAS RN® : 20858-12-2

  • Soluble in acidic aqueous solution, potential for aqueous polymerization of non-halogen using organic acid like acetic acid.
  • 10 Hour half-life decomposition temperature: 61℃(at about 45℃ in acidic aqueous solution)
Structural formula of VA-061 View

VA-057water soluble

CAS RN® : 1400693-47-1

  • Potential for introducing carboxyl group into terminal of polymer
  • Zwitterionic structure
  • Can be used in a wide pH range(pH 3 to 9)
  • 10 Hour half-life decomposition temperature: 57℃
Structural formula of VA-057 View

Oil soluble Azo intiatorsoil soluble

V-601oil soluble

CAS RN® : 2589-57-3

  • Non-nitrile azo initiator as an alternative to AIBN
  • With equivalent polymerization activity of AIBN. Efficiency of polymerization rises in alcohol solvents
  • 10 Hour half-life decomposition temperature: 66℃
Structural formula of V-601 View

V-70oil soluble

CAS RN® : 15545-97-8

  • With highest polymerization activity among azo initiators available in Wako
  • 10 Hour half-life decomposition temperature: 30℃
Structural formula of V-70 View

V-40oil soluble

CAS RN® : 2094-98-6

  • Oil-soluble azo initiator having high decomposition temperature
  • 10 Hour half-life decomposition temperature: 88℃
Structural formula of V-40 View

AIBNoil soluble

CAS RN® : 78-67-1

  • The most common azo initiator
  • 10 Hour half-life decomposition temperature: 65℃
Structural formula of AIBN View

V-65oil soluble

CAS RN® : 4419-11-8

  • Employed in various polymerizations for general purposes
  • 10 Hour half-life decomposition temperature: 51℃
  • Oil-soluble azo initiator having low decomposition temperature
Structural formula of V-65 View

V-59oil soluble

CAS RN® : 13472-08-7

  • Freely soluble in various organic solvents
  • 10 Hour half-life decomposition temperature: 68℃
Structural formula of V-59 View

VAm-110oil soluble

CAS RN® : 195520-32-2

  • Non-nitrile azo initiator having high decomposition temperature
  • 10 Hour half-life decomposition temperature: 110℃
Structural formula of VAm-110 View

VR-110oil soluble

CAS RN® : 39198-34-0

  • Generates polymerization active species consisting only of hydrocarbons
  • 10 Hour half-life decomposition temperature: 110℃(in diphenyl ether)
Structural formula of VR-110 View

Macro Azo initiators

VPS-1001N

VPS-1001N includes a polydimethylsiloxane (silicone) unit in the initiator structure. Block copolymers polymerized using VPS-1001N with vinyl monomers can result in desirable polymer features such as heat resistance, water repellency, lubrication, mold releasing, biocompatibility and gas permeability in resin materials blended with other polymers.

Structural formula of VPS-1001N View

VPE-0201

VPE-0201 includes a polyethyleneglycol (PEG) unit in the initiator structure. Block copolymers radically polymerized using VPE-0201 with vinyl monomers can result in desirable polymer features such as hydrophilicity, dispersibility, antistatic properties and anti-tarnish properties in resin materials blending with other polymers.

Structural formula of VPE-0201 View

Initiators HP grade (metal management products)

V-65HPoil soluble

CAS RN® : 4419-11-8

Structural formula of V-65HP View

AIBN-HPoil soluble

CAS RN® : 78-67-1

Structural formula of AIBN-HP View

V-601HPoil soluble

CAS RN® : 2589-57-3

V-601HP View

Here, you can calculate the ‘residue rate’, ‘decomposition reaction time’, and ‘temperature during the decomposition reaction’ of azo polymerization initiators.

Image of Azo Residue Rate Calculation Tool