Du Pont VAZO® the initiator with no oxygen, stops polymer

Nov 7, 2010 - Advertisements that appeared within the print issues of Chem. Eng. News have been included in the C&EN Archives to provide a ...
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Du Pont VAZO no oxygen, stops

the initiator with polymer discoloration The answer is in the radical. DuPont VAZO® polymerization initiators, unlike organic peroxide, contain no oxygen atoms. Therefore, there is no oxygen­ ated residue. The free electron of the radical is on the carbon atom, so that radicals are less active. This means less hydrogen abstraction, branching, cross-linking and gel formation. The end result: polymers that are more linear and optically clearer. Pick the right VAZO® for your plastics and resins R&D. Whether your interest is in making polymers for new products or for improving existing ones, if it involves pigmented or dyed sys­ tems, or systems susceptible to hydrogen abstraction, one of these four VAZO® types is right for you:

Call 800-341-4004 for literature and a free sample. For immediate response, call 800-341-4004, or mail the coupon below, for our properties and applications literature. Once you've reviewed it, we're prepared to send you a sample of the VAZO® type that's right for your plastics and resins R&D. DuPont Company, Room X40289, Wilmington, DE19898.

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VAZO® Type General Benefits 8 8

High-temperature polymerization; easily stored.

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High solubility; low toxicity.

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Lower cost per pound than any thermally activated organic perox­ ide in its temperature range.

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Please send me free literature discussing VAZO® polymerization initiators.

Low-temperature polymerization; low solubility in water.

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This computer-generated display of VAZO® 88 was developed by DuPont research using X-ray crystallography and color molecular graphics.

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