Akzo Nobel N.v.

Akzo Nobel Chemicals International B.v.

Symrise Ag

Nouryon Chemicals International B.v.

Bart Fischer

John Meijer

Andreas Herman Hogt

Anna Gerdine Van De Bovenkamp-Bouwman

Joachim Willem J Van Gendt

Johan Nuysink

Rolf Hendrik Van Den Berg

Paul Albert Iacobucci

Wilhelm Klaas Frijlink

Martinus Catharinus Tammer

Geesje Klasina Spijkerman

Jan Martijn Van Der Schuur

René Gerritsen

Petrus Paulus Waanders

Frans Johannes Hoogesteger

Renaud Charles Joseph Millet

Simon Put

Johannes Isodorus Roes

Maurice Ludovicus Josephina Frijns

Frans-Johannes Hoogesteger

Masterbatch comprising a dimeric and/or trimeric cyclic ketone peroxide dispersed in a polymeric matrix with a porosity, expressed as percentage of voids on the volume of the matrix, of 0.1-80 vol %, wherein said masterbatch comprises, per 100 g of polymeric matrix, 1-30 g dimeric and/or trimeric cyclic ketone peroxide and less than 0.20 g saturated hydrocarbons with 17-51 carbon atoms.

Masterbatch comprising a cyclic ketone peroxide

A composition comprising at least two trimeric cyclic ketone peroxides: a trimeric cyclic methyl ethyl ketone peroxide (3MEK-cp) of formula (I) and at least one peroxide satisfying formula (II) wherein Rthrough Rare independently selected from alkyl and alkoxyalkyl groups, said groups having 2 to 5 carbon atoms, the total number of carbon plus oxygen atoms of R&#x2212;R+Ris in the range 7-15, and the molar ratio of 3MEK-cp to the total amount of peroxides satisfying formula (II) being in the range of from 10:90 to 80:20. 

Cyclic ketone peroxide composition

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 present invention relates to peroxide compositions comprising one or more cyclic ketone peroxides, one or more dialkyl peroxides, and, optionally, one or more conventional phlegmatisers. These compositions are safe and storage stable. In addition, the invention also pertains to the use of such compositions in polymerization and (co)polymer modification processes.

Storage stable cyclic ketone peroxide compositions

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 a method to safely produce, handle and transport packaged organic peroxide formulations comprising a reactive phlegmatiser and to the use of such packaged material in polymerisation and polymer modification processes, particularly the high-pressure (co)polymerisation process of ethylene and/or the suspension (co)polymerisation process of styrene.

Transportable and safely packaged organic peroxide formulations comprising reactive phlegmatisers

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 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.

Extrusion process for enhancing the melt strength of polypropylene

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Leusden, Netherlands

Bart Fischer