Chemical name TERT-BUTYL METHACRYLATE, (TBMA)
Chemical formula

C8 H14 O2

Concentration

min. 99.0 %

Inhibitor 200 ± 20 ppm MEHQ
CAS Number 585-07-09
EINECS # 209-548-7
HS code 29161400
Chemical name TERT-BUTYL METHACRYLATE, (TBMA)
HS code 29161400
Chemical formula

C8 H14 O2

Concentration

min. 99.0 %

Inhibitor 200 ± 20 ppm MEHQ
CAS Number 585-07-09
EINECS # 209-548-7

tert-Butyl Methacrylate (TBMA)

tert-Butyl Methacrylate (TBMA) is an ester of Methacrylic acid and is used as a raw material component in the synthesis of polymers. The ester is a functional monomer consisting of a methacrylate group with a characteristic high reactivity and a cyclic hydrophobic group. It forms homopolymers and copolymers which can be obtained with acrylic acid and its salts, amides, and esters, as well as methacrylates, acrylonitrile, maleic esters, butadiene, and other monomers.

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

The introduction of tert-Butyl Methacrylate (TBMA) in polymers provides them with: 

  • Hydrophobicity
  • Chemical resistance
  • Scratch resistance
  • Weatherability
  • High (Tg) glass transition temperature
  • Flame retardancy
  • High solids
  • Heat resistance
  • Hardness
  • Adhesion

Characteristics: 

  • tert-Butyl Methacrylate 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.

The areas of applications:

  • tert-Butyl Methacrylate (TBMA) can be used in emulsion polymerization similar to other well-known acrylates like Butyl Methacrylate 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 tert-Butyl Methacrylate (TBMA) (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.

It is applied in the production of: 

  • Coatings and Inks
  • Plastics
  • Personal care
  • Adhesives
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Physical Properties:

  • Purity
    min. 99.0 %
  • Acid Value
    max. 0.1 %
  • Water content
    max. 0.05 %
  • Color APHA
    max. 10
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Chemical Properties:

  • Appearance
    clear, colorless
  • Physical form
    liquid
  • Odor
    n/a
  • Molecular weight
    142.2 g/mol
  • Polymer Tg
    117 °C
  • Tg
    105 °C
  • Density
    0.875 g/cm3 at 20 °C
  • Boiling Point
    136 °C
  • Freezing Point
    – 48 °C
  • Flash point
    n/a
  • Melting Point
    -48 °C
  • Viscosity
    0.97 mPa · s at 20 °C
  • Vapor Point
    7.0 mbar at 18.5 °C
  • pH
    n/a

In order to prevent polymerization, tert-Butyl Methacrylate (TBMA) 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, the storage stability of one year can be expected upon delivery. In order to minimize the likelihood of over storage, 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.

Storage & Handling:

In order to prevent polymerization, tert-Butyl Methacrylate (TBMA) 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, the storage stability of one year can be expected upon delivery. In order to minimize the likelihood of over storage, 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.

Safety

A Safety Data Sheet has been compiled for tert-Butyl Methacrylate (TBMA) that contains up-to-date information on questions relevant to safety.

Note

The data contained in this publication are based on our current knowledge and experience. In view of the many factors that may affect the processing and application of our product, these data do not relieve processors from carrying out their own investigations and tests; neither do these data imply any guarantee of certain properties, nor the suitability of the product for a specific purpose. Any descriptions, drawings, photographs, data, proportions, weights, etc. given herein may change without prior information and do not constitute the agreed contractual quality of the product. It is the responsibility of the recipient of our products to ensure that any proprietary rights and existing laws and legislation are observed.

It can be purchased in bulk or packed in drums or IBC.

Delivery conditions

It can be purchased in bulk or packed in drums or IBC.