United Initiators DHBP-75-PIC 2,5-Dimethyl-2,5-di(tert.butylperoxy)hexane 78-63-7

Product Description::

• DHBP-75-PIC is a white paste containing approximately 72% 2,5-Dimethyl-2,5-di(tert.butylperoxy)hexane to which silica gel has been added to reduce sensitivity.
• This is a bifunctional dialkyl peroxide used primarily as a cross-linking initiator (free radical source) for polymers and for cross-linking silicone rubber at temperatures above 170°C. It is used as a cross-linking initiator (free radical source) for polymers.

Technical data::

• Appearance: white paste
• Purity (GC): approx. 75% w/w
• Active Oxygen (calculated value): approx. 8.11 TP3T w/w
• Desensitizer: Silica gel
• Critical temperature (SADT): approx. 90°C
• Freezing point: below -20°C
• Recommended storage temperature: below 30°C
• Storage stability after delivery date: 3 months
• This product complies with ElektroG (EU Directives: RoHS 2002/95/EG, WEEE 2002/96/EG)
• Half-life: 10 hours/1 hour/1 minute (0.1 m/benzene): 120/142/190°C

appliance::

• Polymer crosslinking: A peroxide crosslinker for many polymers and elastomers, especially silicone rubber (VMQ), but also for polyethylene (LDPE, HDPE), ethylene/vinyl acetate copolymers (EVA or EAM), ethylene/propylene/(diene) rubbers (EPM, EPDM), and fluoroelastomers (FKM).
• Cross-linking temperature: above 170°C. Below 140°C no premature cross-linking (flaming) occurs.
• Usage level: 1-4% as supplied raw material.
• For some inactive polymers, cross-linking efficiency can be improved by the addition of 1-5% synergists such as TAC or EDMA.
• Special advantages: efficient and very versatile. Paste form facilitates mixing and homogenization. Decomposition products are volatile, odorless and do not cause white spots on the vulcanized rubber surface.

statement denying or limiting responsibility: This information and all further technical advice reflects our current knowledge and experience based on in-house testing with local raw materials and is intended to inform you about our products and applications. This information should not be construed as a guarantee of the specific performance of the products described or their suitability for a particular application, nor does it provide complete instructions for use. This information does not provide any warranty for product and shelf-life characteristics, nor does it assume legal liability for the use of the user, including against existing third-party intellectual property rights, in particular patents. We reserve the right to make any changes in accordance with technical progress or further developments. The use and application of our products based on our technical recommendations is beyond our control and is entirely the responsibility of the user. The user is not exempted from the obligation to carry out careful inspections and tests to verify the suitability of the purchased goods for the intended application.