What is BIPB 96?

Quick answer: A strong printing-ink formulation is usually the one that keeps process stability and final print quality in balance, rather than over-optimizing only one part of the press behavior.

The vulcanizing agent BIBP belongs to the peroxide class cross-linking agent, in the vulcanization process for free radical cross-linking, high cross-linking density of rubber products, cross-linking process does not emit irritating odor to the environment without pollution. Suitable for vulcanization methods are: molded vulcanization, steam tank vulcanization, high temperature continuous vulcanization.

Vulcanizing agent BIBP
BIPB is called odorless DCP, in addition to the similarity in structure, there is an important reason, that is, almost can use DCP where it can be replaced by BIPB, BIPB instead of DCP rubber performance, including hardness, breaking strength, elongation, tear strength and oil resistance, aging coefficient, etc., basically the same, and compression deformation at high temperatures, BIPB is better than DCP.

But BIPB has a significant disadvantage, that is, the price is too much higher than DCP, which is the biggest factor limiting the widespread use of BIPB. The use of BIPB in Europe is much higher than DCP, and with the strengthening of domestic producers and consumers’ awareness of environmental protection, the demand for domestic BIPB is now increasing.

Another big disadvantage of BIPB is that when using BIPB as EPDM cross-linking agent, it is easy to appear the phenomenon of spraying crystal (note that it is spraying crystal, not spraying frost), the light will go up bright crystal, while DCP will not. This is due to the decomposition products of BIPB and EPDM poor compatibility and spray out. If your products are exported to foreign countries, especially in Europe, you can rest assured that customers will know that you use a good vulcanizing agent and gladly accept. If you want to solve this spray crystal phenomenon, there are two main methods.

1. adding PEG4000 to the formulation.

2. reduce the amount of BIPB at the same time to add part of the double two five, equivalent to reduce the decomposition products of BIPB, without affecting the cross-linking efficiency.

These two programs are successful examples, of course, there are also manufacturers of EPDM with BIPB cross-linking agent does not appear spray crystal phenomenon, perhaps because of a number of additives to limit the crystal spray, the specific why is not known.

Thermoplastic rubber TPV also has the use of BIPB as a cross-linking agent, but with the automotive industry’s increasingly high odor requirements, that is, after the use of BIPB, odor is not necessarily to meet the requirements, but also need further processing, such as the use of chemical / physical adsorption, de volatile, drying and other process means to reduce odor.Contact Us Now!

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A practical formulation view of printing and ink-processing topics

Ink performance problems are often multi-variable problems. Teams generally move faster when they screen transfer, flow, drying or curing, and substrate hold together instead of changing one raw material at a time without a clear decision frame.

• Define the real process bottleneck: poor transfer, drying problems, skinning, and color instability often need different corrective routes.
• Check viscosity inside the print process: an ink that looks fine in the container can behave very differently on the machine.
• Review substrate compatibility: paper, film, metalized surfaces, and laminates often require different balance points.
• Use post-print checks as part of selection: scratch resistance, tape adhesion, lamination behavior, and storage stability are usually as important as the fresh-print appearance.

Recommended product references

• CHLUMIAF 094: A balanced defoamer reference for waterborne coatings and many general foam-control screens.
• CHLUMIAF 3037: A stronger process-defoaming option when persistent foam survives harsher conditions.
• CHLUMIWE 3280: A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.
• CHLUMIWE 3071: Useful when organosilicone wetting support is needed in a broad application screen.

FAQ for buyers and formulators

Why do many ink problems require more than one formulation change?
Because flow, transfer, drying, adhesion, and appearance interact, so improving one of them can sometimes worsen another if the full system is not reviewed together.

Should rheology be judged only by a single viscosity number?
Not usually. Printability also depends on transfer behavior, temperature, shear history, and how the ink behaves on the actual press.