Akzo Nobel N.v.

Anna Gerdine Van De Bovenkamp-Bouwman

John Meijer

Andreas Herman Hogt

Joachim Willem J Van Gendt

Frederik Willem Karel Koers

Andreas Petrus Van Swieten

Bart Fischer

Marinus Catharinus Tammer

Bernhard De Vries

Ejaz Ahmed Syed

Bernard De Vries

Johannes Willibrordus A Overkamp

Accelerator solution suitable for forming a redox system with peroxides and having a high storage stability, consisting essentially of (a) more than 1.0 wt % of one or more reducing agents, at least one of them being selected from ascorbic acid and sodium formaldehyde sulphoxylate, (b) one or more metal salts, at least one of them being selected from the group consisting of transition metal salts, lithium salts, and magnesium salts, (c) one or more organic oxygen-containing solvents, (d) optionally one or more stabilisers, and (e) optionally water.

Storage-stable accelerator solution

The invention relates to an accelerator solution comprising a complexing agent selected from the group consisting of complexing agents having a nitrogen atom and a hydroxyl group and bipyridine, a salt of a metal selected from the group consisting of transition metal, magnesium, and lithium, and optionally a solvent, wherein when the complexing agent has a nitrogen atom and a hydroxyl group, the amount of complexing agent in the accelerator solution is at least 5 wt %, based on the total weight of the accelerator solution, the amount of solvent is less than 50 wt %, and the amount of diethylene glycol as solvent is less than 25 wt %, based on the total weight of the accelerator solution.

Accelerator solution

The invention relates to peroxides derivable from The invention further relates to the process to make these peroxides as well as to their use in polymerization, curing, and modification reactions.

Ketone peroxide derivatives, their preparation and use

The invention relates to a preparation process for making peroxy esters and peroxy carbonates, peroxy ester peroxy carbonates, mixed diperoxides, mixed diperoxy esters, and mixed diperoxy carbonates, and to specific monoperoxy esters, monoperoxy carbonates, mixed peroxides, mixed diperoxy esters, mixed diperoxy carbonates, peroxy ester peroxy carbonates, and mixtures thereof. The process involves the reaction of a type-3 ketone peroxide with a reactive carbonyl compound and optional subsequent reaction with an alkyl vinyl ether, acetal, halogen formate, or carboxylic acid anhydride.

Peroxides, their preparation process and use

The invention relates to a process for the preparation of a peracid, perester or diacylperoxide and is characterized in that a mixed anhydride of formula R &lsqb;C(O)OC(O)OR &rsqb; or &lsqb;R C(O)OC(O)O&rsqb; R is contacted with a hydroperoxide of formula R &lsqb;OOH&rsqb; in the presence of a base, wherein R represents a mono-, di-, tri- or tetravalent C -C hydrocarbon group, optionally containing one or more hetero atoms, n is 1-4, R represents a C -C hydrocarbon group, optionally containing one or more hetero atoms, R represents a C -C hydrocarbon group, optionally containing one or more hetero atoms, R represents a di-, tri- or tetravalent C -C hydrocarbon group, optionally containing one or more hetero atoms, p is 2-4, R represents hydrogen or a mono- or divalent C -C tertiary alkyl or C -C acyl group, in which the tertiary alkyl or acyl group may optionally contain one or more hetero atoms, m is 1 or 2, and if R represents hydrogen, m is 1, provided that if the hydroperoxide is an &agr;,&agr;&prime;-dihydroperoxyperoxide, the reaction is not carried out in an inert two-phase solvent system comprising a polar solvent and an apolar solvent. The invention also relates to a hydroxyperacid, hydroxyperester, and hydroxydiacylperoxide obtainable by said process and the use of said hydroxyperoxides.

Process for preparing peroxides using mixed anhydrides

The invention is drawn to compounds of formula (I) which is HOO&mdash;C(R1)(R2)&mdash;OO&mdash;(R1)(R2)&mdash;OO&mdash;(C&boxH;O)&mdash;(O) R3 wherein n is 0 or 1, R1 and R2 are independently selected from the group consisting of H, C -C alkyl, C -C cycloalkyl, C -C aryl, C -C aralkyl, C -C alkaryl which may be optionally substituted or R1 and R2 can form a C -C cycloalkyl group and R3 is selected from C -C alkyl, C -C cycloalkyl, C -C aryl, C -C aralkyl, and C -C alkaryl which can be optionally substituted; a process for the preparation of the peroxy esters or peroxy carbonates of formula (I); and the method of using the compounds as polymer initiators or curing agents.

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Nijkerk, Netherlands

Anna Gerdine Van De Bovenkamp-Bouwman