Akzo N.v.

Johannes P Verlaan

Wilhelmus M Beijleveld

John Meijer

Andreas Herman Hogt

Leonardus B Nijhoe

Novel organic peroxides of the general formula ##STR1## wherein p=0 or 1 and n=1, 2, 3 or 4 are described. These peroxides are excellently suitable for use in the preparation of epoxide groups-containing (co)polymers. Also described are shaped objects obtained by using (co)polymers thus modified.

Organic peroxides and their use in the preparation of epoxide

Organic peroxides having at least one carbon-carbon double bond, e.g. 2-t-amylperoxy-4,6-diallyloxy-1,3,5-triazine, and the use of such organic peroxides as cross-linking agents for polymers are disclosed. The organic peroxides of the current invention allow polymer cross-linking at elevated temperatures. The disclosed organic peroxides are especially useful in processes for cross-linking polymers and co-polymers of ethylene.

Triazine peroxides

This disclosure relates to a process for cross-linking polymers, e.g. polyethylene, or degrading polymers, e.g. polypropylene, using peroxides having at least one carbon-carbon double bond in the molecule, e.g. 1-(t-butyl peroxy isopropyl)-3-isopropenylbenzene. Incorporation of the peroxides into the polymer may be carried out at relatively high temperatures without the risk of premature decomposition of the peroxide, thus allowing easy processability of the polymer mass prior to cross-linking or degradation. The polymeric end products obtained are odorless and do not display blooming.

Process for cross-linking or degrading polymers and shaped articles

A composition is disclosed which is especially suitable for use in the pretreatment of polymers that have to be cross-linked with a radical forming cross-linking agent. The resulting shaped, cross-linked products display excellent surface properties. The composition contains a finely divided, film forming polymer, e.g. polyethylene, a finely divided rubber filler, e.g. silanized clay, and an organic peroxide, e.g. dicumyl peroxide.

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Deventer, Netherlands

Johannes P Verlaan