Propriétés Physiques
Données de Demi-Vie
Produits de Décomposition: carbon dioxide, tert-butyl alcohol, 3,3,5-trimethylhexanoic acid, methane, acetone, 2,2,4-trimethylpentane
Aliases & Synonyms
- Other names
- TBPMH
- Also supplied under these brand names*
- Trigonox 42 · Luperox 270(Commercial Reference)*
* Brand names are trademarks of their respective owners and are referenced for identification purposes only. LAAP products are not manufactured or endorsed by these companies.
Aperçu
Le TBPMH est un initiateur de polymérisation très efficace principalement utilisé pour la production de polyéthylène basse densité (LDPE) dans les procédés tubulaires et autoclaves. Il est également largement utilisé dans la polymérisation du styrène et de l'acrylonitrile. Dans l'industrie des thermodurcissables, le TBPMH agit comme un agent de durcissement à moyenne température pour les résines polyester insaturées, ce qui le rend adapté aux formulations SMC (Sheet Molding Compound) et BMC (Bulk Molding Compound) nécessitant un contrôle précis du durcissement.
Guide Technique de Sélection
Présentation du Produit
tert-Butyl peroxy-3,5,5-trimethylhexanoate (TBPMH, CAS 13122-18-4) is a medium-temperature peroxyester with 6.95% active oxygen and a 10-hour half-life temperature of 94°C. It is a primary initiator for the production of low-density polyethylene (LDPE) in both tubular and autoclave processes, and is also used in styrene and acrylate polymerization and in unsaturated polyester curing.
Profil de Demi-Vie et de Température
TBPMH's half-life series (135℃ at 0.1 h, 114℃ at 1 h, 94℃ at 10 h) gives a process window of roughly 110-150°C. In LDPE reactors TBPMH is typically used in the mid-section of the initiator cascade, after a faster peroxydicarbonate has started the reaction and before the high-temperature dialkyl peroxide takes over at the peak. The choice of injection point is governed by the 1-hour half-life, which is the point at which the initiator contributes the bulk of its radical flux.
Sélection au Sein de la Même Famille
Within the LAAP peroxyester family, TBPMH (94°C) sits between TBPEH (CAS 3006-82-4, 73°C) and TBPA (CAS 107-71-1, 100°C). Choose TBPMH when the process runs 110-150°C and a liquid initiator with good thermal stability is required. Its branched 3,5,5-trimethylhexanoate group improves solubility in non-polar monomers compared with linear peroxyesters, which is why it is favoured in LDPE and in styrenic systems.
Qualité, REACH et Documentation
TBPMH is a clear liquid, ≥97.0% pure, with a colour specification below 30 Pt-Co. Typical controls are assay, active oxygen, colour and water content. Each batch ships with a CoA; REACH-compliant SDS and a TDS with the half-life table are available.
Conditionnement, MOQ et Délai
Standard packing is 20 kg polyethylene drums, with custom packaging on request. SADT is 55°C with a recommended storage range of -20°C to 25°C, so cold-chain shipping applies. Minimum order quantity starts at 25 kg, and quotations are returned within 24 hours.
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