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tert-Butyl Acrylate (TBA)

Chemical name TERT-BUTYL ACRYLATE, (TBA)
Chemical formula

C7H12O

CAS # 1663-39-4
EINECS # 216-768-7
Inhibitor (MEHQ) 15 ± 5 ppm
Chemical name TERT-BUTYL ACRYLATE, (TBA)
Chemical formula

C7H12O

CAS # 1663-39-4
EINECS # 216-768-7
Inhibitor (MEHQ) 15 ± 5 ppm

tert-Butyl Acrylate (TBA)

tert-Butyl Acrylate (TBA) is an ester of Acrylic acid and is used as a raw material component in the synthesis of polymers. The ester is a monofunctional monomer with a characteristic high reactivity of acrylates and a bulky hydrophobic moiety. It forms homopolymers and copolymers which can be obtained from acrylic acid and its salts, amides, and esters, etc.

tert-Butyl Acrylate (TBA) is a very useful starting material for chemical syntheses because it readily undergoes addition reactions with a wide variety of organic and inorganic compounds.

Features & Benefits: 

  • Chemical resistance
  • Hydrophobicity
  • Hardness
  • Scratch resistance
  • Adhesion
  • Heat resistance
  • High solids
  • Weatherability

Characteristics: 

  • tert-Butyl Acrylate moiety affords high hydrophobicity close to the polymer backbone.
  • High glass transition temperature (Tg 50°C) increases the hardness of polymer.
  • Selective heat and chemical resistance allow polymer modification in the processing of the final application.

Applications: 

  • Coatings and inks
  • Plastic
  • Paper
  • Adhesives

tert-Butyl Acrylate can be used in emulsion polymerization similar to other well-known acrylates like Butyl Acrylate or Methylmethacrylate. As the hydrolytic stability under harsh acidic conditions is reduced for tert-Butyl Acrylate (elimination of iso-butylene), it is recommended to use for the polymerization a pH range of 3-4 (controlled via puffer or alkaline substances like ammonia or bicarbonate). With a higher share of TBA (as a substitute of MMA) in the polymer, we observe an increased tendency of cross-linking. Most probably due to the higher backbone crosslinking tendency of acrylates compared to methacrylates(radical transfer to polymer chain/backbone). Best results concerning particle size distribution were achieved by using a polymer seed, either as a ready polymer dispersion (e.g. polystyrene) or as an in-situ polymer seed.

1
1
Physical Properties:
  • Purity
    ≥ 99.0 %
  • Acid Value
    ≤ 0.1 %
  • Water content
    ≤ 0.04
  • Color APHA (max)
    10
1
Chemical Properties:
  • Molecular weight [Mw g/mol]
    128.2
  • Polymer Tg [Tg °C]
    44
  • Tg [°C]
    50
  • Boiling Point [Bp °C]
    119
  • Melting Point [Mp °C]
    –69
  • Vapor Point [Vp mbar at °C]
    20 at 23
In order to prevent polymerization, tert-Butyl Acrylate (TBA) must always be stored under air, and never under inert gases. The presence of oxygen is required for the stabilizer to function effectively. It has to contain a stabilizer and the storage temperature must not exceed 35 °C. Under these conditions, a storage stability of one year can be expected upon delivery. In order to minimize the likelihood of overstorage, the storage procedure should strictly follow the “first-in-first-out” principle. For extended storage periods over 4 weeks it is advisable to replenish the dissolved oxygen content. The preferred construction material for tanks and pipes is stainless steel. Carbon steel is also acceptable, although the formation of rust may be a problem with product quality (color). Iron(III)-ions have been shown to be a weak polymerization initiator. If carbon steel is to be used, special procedures should be used to prepare the tank for use. Storage tanks, pumps and pipes should be earthed.
Additional information In order to prevent polymerization, tert-Butyl Acrylate (TBA) must always be stored under air, and never under inert gases. The presence of oxygen is required for the stabilizer to function effectively. It has to contain a stabilizer and the storage temperature must not exceed 35 °C. Under these conditions, a storage stability of one year can be expected upon delivery. In order to minimize the likelihood of overstorage, the storage procedure should strictly follow the “first-in-first-out” principle. For extended storage periods over 4 weeks it is advisable to replenish the dissolved oxygen content. The preferred construction material for tanks and pipes is stainless steel. Carbon steel is also acceptable, although the formation of rust may be a problem with product quality (color). Iron(III)-ions have been shown to be a weak polymerization initiator. If carbon steel is to be used, special procedures should be used to prepare the tank for use. Storage tanks, pumps and pipes should be earthed.
It can be purchased in bulk or packed in drums or IBC and delivered to the final destination.
Delivery conditions It can be purchased in bulk or packed in drums or IBC and delivered to the final destination.