Akzo Nobel N.v.

Akzo N.v.

E.i. Dupont De Nemours and Company

Symrise Ag

Himont Incorporated

Kayaku Akzo Corporation

John Meijer

Andreas Herman Hogt

Anna Gerdine Van De Bovenkamp-Bouwman

Jernej Jelenic

Bart Fischer

Luc L Vertommen

Joachim Willem J Van Gendt

Reinder Torenbeek

Andreas Petrus Van Swieten

Peter Hope

Bernard Jean Maillard

Hans Westmijze

René Gerritsen

Rolf H Van Den Berg

Johannes W Overkamp

Gerrit Bekendam

Leonie Arina Stigter

Bernhard De Vries

Petrus Johannes Alferink

Andreas J Nollet

Anthony J DeNicola, Jr

Paul Albert Iacobucci

Frederik Willem Karel Koers

Johannes P Verlaan

Wasil Maslow

Johan Nuysink

Eltjo Boelema

Marinus Catharinus Tammer

Charles Manuel Navarro

Leonardus Bernardus Gerhardus Maria Nijhof

Rolf Hendrik Van Den Berg

Takumi Fukumura

Haimo Tonnaer

Ejaz Ahmed Syed

Johannes Jacobus De Groot

Folkert Petrus Cuperus

Roelof Van De Worp

Caroline C Wei-Berk

Rene Gerritsen

Johannes T P Derksen

Gerardus F H Kramer

Herman Evert Roelofs

The invention relates to a process for preparing saturated or unsaturated lactones. This process involves reacting a bicyclic compound or a monocyclic compound with hydrogen peroxide in the presence of a first acid having a pKof 3 or less and a first organic solvent, thereby forming a hydroperoxide. The obtained mixture comprising the hydroperoxide is subsequently metered to a mixture of a second organic solvent and a dissociation-enhancing catalyst, optionally comprising a second organic acid. The invention also pertains to a process of preparing the hydroperoxide.

Process for preparing unsaturated lactones

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 pertains to an aqueous composition having a pH of 3 or less and comprising the following ingredients, based on the total weight of the composition: a) 0.05-40 wt % of a polymeric thickener having &#x2014;COOR groups, wherein R is independently chosen from H, OH, and a carbon-containing group, and b) 0.05-60 wt % of hydrogen peroxide, wherein the active oxygen content attributable to ingredient a) is at least 0.02 wt %, based on the total weight of the composition, with the proviso that (co)polymers prepared from (meth)acrylate monomers are absent.

Aqueous hydrogen peroxide-containing composition and its use for cleaning surfaces

Process to prepare a trioxepane compound of the following formula (I) comprising less than 3.5 wt % of dialkyl peroxide based on the total amount of peroxides, said process comprising the steps of reacting a glycol compound of the formula RCHOH&#x2014;CH&#x2014;C(CH)OH with hydrogen peroxide in the presence of an acid to form a glycol hydroperoxide, purifying the glycol hydroperoxide, reacting the purified glycol hydroperoxide with a ketone or aldehyde of the formula RRCO in the presence of an acid to form the trioxepane compound, and purifying the trioxepane compound, wherein R, R, and Rare independently selected from hydrogen and a substituted or unsubstituted hydrocarbyl group, with the proviso that if Rand Rare both methyl groups, Ris not hydrogen. Initiator compositions comprising the so-prepared trioxepane compound are characterized by a high safe processing temperature in combination with a good crosslink efficiency.

Process for preparing trioxepane composition and use thereof in crosslinking polymers

The present invention relates to a cyclic ketone peroxide formulation comprising one or more crystallizing cyclic ketone peroxides, one or more co-crystallizing compounds which solidify in said cyclic ketone peroxide formulation at a temperature above the crystallization temperature of the crystallizing cyclic ketone peroxide, and, optionally, one or more conventional phlegmatizers (diluents). These formulations show improved safety and storage stability compared to conventional cyclic ketone peroxide formulations. The invention also pertains to the use of these formulations in (co)polymerization and (co)polymer modification processes.

Cyclic ketone peroxide formulations

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

Use of trioxepans in the process to make high-solid acrylic, styrenic, and LDPE-type resins

The invention relates to curing process wherein specific unsaturated diacyl-peroxides and/or unsaturated acylperoxycarbonates are used. These peroxides were found to be pre-eminently suited to the curing of silicone rubbers and polyester resins. Their use does not lead to blooming, bad smell and/or discoloration of the cured product, while allowing low residual monomer levels to be obtained at processing temperatures below the temperature used in conventional processes wherein peroxyesters are used.

Use of unsaturated diacyl or acylcarbonate peroxides in cross-linking processes

Trioxepan compounds

Use of trioxepans in ignition improved fuels

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.

The invention relates to a process for the preparation of a tertiary perester by contacting an acyl compound with a tertiary hydroperoxide in the presence of an enzyme catalyst. The acyl compound has the formula R,&lsqb;C(O)OR,&rsqb;,, wherein R,is a linear or branched, saturated or unsaturated C,-C,group, optionally containing one or more hetero atoms, R,represents hydrogen or has the same meaning as described for R,, and n is 1-5, or a polyalcohol ester of R,C(O)OH, wherein R,has the same meaning as described above. The tertiary hydroperoxide has the formula &lsqb;HOOCR,R,&rsqb;,R,, wherein R,represents either a methyl or an ethyl group, R,has the same meaning as described for R,, and m is 1-5.

Process for the preparation of a tertiary perester

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Deventer, Netherlands

John Meijer