Tert-Butyl peroxybenzoate (TBPB) a chemical compound from the group of peresters. It is often used as a radical initiator in polymerization reactions, such as the production of LDPE from ethylene, and for crosslinking, such as for unsaturated polyester resins.
TBPB is a low volatility ,high purity,liquid, aromatic peroxuester.it is effective as medium of a broad spectrum of monomers e.g .styrene.ethylenn,acrylics.it is also used to cure (copolymerzation) unsaturated resins .
TBPB is a clear light yellow liquid, which is little soluble in water but well in many organic solvents such as ethanol or phthalate.
As peroxo compound, TBPB contains about 8.16 wt% of active oxygen and has a self accelerating decomposition temperature (SADT) of about 60 °C. The SADT is the lowest temperature at which self-accelerating decomposition in the transport packaging can occur within a week, and which should not be exceeded while storage or transportation.[2] TBPB should therefore be stored between minimum 10 °C (below solidification) and maximum 50 °C. Dilution with a high-boiling solvent increases the SADT. The half-life of TBPB, in which 50% of the peroxy ester is decomposed, is 10 hours at 104 °C, one hour at 124 °C and one minute at 165 °C. Amines, metal ions, strong acids and bases, as well as strong reducing and oxidizing agents accelerate the decomposition of TBPB even in low concentrations.[ However, TBPB is one of the safest peresters or organic peroxides in handling. The main decomposition products of tert-butyl peroxybenzoate are carbon dioxide, acetone, methane, tert-butanol, benzoic acid and benzene.
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Jia Chengbing Attends Meeting of China Plastics Machinery Industry Association
On June 9th, the China Plastics Machinery Industry Association convened a chairman meeting in Beijing. The session focused on reviewing the association's work for the second half of the year, conducting its annual inspection, and refining its operational procedures. Attendees engaged in detailed discussions, aligning their thoughts and reaching a consensus on future directions. All members agreed that the association should seize this opportunity to build trust and support from its members by delivering quality services, maintaining self-discipline, and fostering coordination. Together, they aim to promote the association’s progress and the industry’s growth, ultimately transforming the China Plastics Machinery Industry Association into a true home for its members.
Jia Chengbing, Executive Vice President of the China Machinery Industry Federation, attended the meeting and delivered a speech. In his address, he acknowledged the contributions made by the veteran members of the association in shaping its foundation and development. He also pointed out some existing challenges and contradictions within the Press Association Secretariat. Jia emphasized the importance of learning from past experiences and ensuring that the roles of the chairman, deputy director units, and the council are fully implemented according to the association’s bylaws. He stressed that all efforts should be aligned with the broader goals of the service sector and member units, creating a positive and sustainable interaction cycle.
He further highlighted the need to focus on team building, business activities, and financial strength. Ultimately, he reiterated that serving the members and supporting the government remain the core objectives of trade associations. As a bridge between members and the government, the association must excel in industry services, self-regulation, supervision, and coordination. By doing so, it can ensure steady growth and play a meaningful role in revitalizing the equipment manufacturing industry.