摘要:
The invention relates to a method for efficiently and safely producing organic peroxides, preferably dialkyl peroxides, peroxycarboxylic acids, peroxycarboxylic esters, diacyl peroxides, peroxycarbonate esters, peroxydicarbonates, ketone peroxides, and perketals with the aid of at least one static micromixer. Also disclosed is a device for carrying out the inventive method.
摘要:
The present invention relates to a process for the continuous preparation of selected organic peroxides using plate exchangers having a high heat exchange capacity.
摘要:
The invention relates to a method for efficiently and safely producing organic peroxides, preferably dialkyl peroxides, peroxycarboxylic acids, peroxycarboxylic esters, diacyl peroxides, peroxycarbonate esters, peroxydicarbonates, ketone peroxides, and perketals with the aid of at least one static micromixer. Also disclosed is a device for carrying out the inventive method.
摘要:
The present invention relates to a process for the continuous preparation of selected organic peroxides using plate exchangers having a high heat exchange capacity.
摘要:
High-purity fluorinated peroxides are prepared in a simplified process in which carbonyl fluoride is reacted with a hypofluorite to produce a gaseous reaction product which is essentially free of unreacted hypofluorite; unreacted carbonyl fluoride and by productsare removed from the gaseous reaction product under gas phase conditions; and then the fluorinated peroxideis collected in gas phase.
摘要:
The invention relates to peroxide compositions comprising a reactive diluent for the peroxide, wherein the diluent is either a component containing one or more vinyl ether group(s) and having a monomeric structure according to formula 1, (A-CH=CH-O)n-R, or is a suitable resinous compound comprising, in a covalently built-in manner, a component containing one or more vinyl ether group(s). In the formula A represents hydrogen or an alkyl group with 1-3 C atoms, and individual A groups may be different; R either represents an aliphatic group, optionally branched, with 1-20 C atoms, etc. or represents a polyethylene or polypropylene glycol with 2 to 120 glycol units, etc. and n is 1,2,3 or 4. The resinous compounds comprising, in a covalently built-in manner, a component containing one or more vinyl ether group(s) are obtained by reaction of: a) a first compound (the HVE-compound) containing at least one hydroxyl group and at least one vinyl ether group, and b) a second compound (the D/HIC-compound), being an isocyanate, reacting with formation of one or more urethane group(s), and c) a third compound (the G/P/HP-compound) chosen from the groups of (1) C2-6 glycols, (2) C5-20 polyols having 2-5 hydroxyl groups and (3) hydroxyl terminated polyester compounds, not being alkyd resins, having 1-5 free hydroxyl groups and from 2-50 monomeric ester units (the G/P/HP-compound), or mixtures thereof. The invention also relates to the preparation of such compositions and to the use of such reactive diluents for peroxides in radically curing of unsaturated polyester resins for structural applications.
摘要:
The present invention relates to a new class of peroxides and to a process for the preparation of these peroxides having general formula (I), wherein n=1 or 2, R1, R2, R4, R5 and R6 are independently selected from the group comprising hydrogen, C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl, and C7-C20 alkaryl, or R1 and R2 form a C3-C12 cycloalkyl group, which groups may include linear or branched alkyl moieties; and each of R1, R2, R4, R5 and R6 may optionally be substituted with one or more groups selected from hydroxy, alkoxy, linear or branched alkyl, aryloxy, halogen, ester, carboxy, nitrile, and amido, and R1 and R2 may form a ring, and R3 is independently selected from the group comprising C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl, and C7-C20 alkaryl, which groups may include linear or branched alkyl moieties; and R3 may optionally be substituted with one or more groups selected from hydroxy, alkoxy, linear or branched alkyl, aryloxy, halogen, ester, carboxy, nitrile, and amido, and any pair of the optionally substituted R3, R4, R5, and R6 may form a ring, comprising the reaction of the corresponding ketone peroxide with general formula (II), wherein n, R1, and R2 have the identified meaning, with an alkyl vinyl ether with general formula (IIIa) or with an acetal with general formula (IIIb), wherein R3, R4, R5, and R6 have the identified meaning, in the presence of a catalyst, to the use of these peroxides as polymerization initiator, curing for unsaturated polyester, and/or modifying agent, and to formulations comprising these peroxides and a carrier or diluent.
摘要:
The invention relates to peroxide compositions comprising a reactive diluent for the peroxide, wherein the diluent is a component containing one or more vinyl ether group(s) and having a monomeric structure according to formula 1, (A-CH=CH-O) n -R, or being covalently built-in into a suitable resinous compound. In the formula
A represents hydrogen or an alkyl group with 1-3 C atoms, and individual A groups may be different R either represents an aliphatic group, optionally branched, with 1-20 C atoms, etc. or represents a polyethylene or polypropylene glycol with 2 to 10 glycol units, etc. and n is 1, 2, 3 or 4.
The components with one or more vinyl ether group(s) covalently built-in into a suitable resinous compound are obtained by reaction of:
a) a first compound (the HVE-compound) containing at least one hydroxyl group and at least one vinyl ether group, and b) a second compound (the D/HIC-compound), being an isocyanate, reacting with formation of one or more urethane group(s), and c) a third compound (the G/P/HP-compound) chosen from the groups of (1) C 2-6 glycols, (2) C 5-20 polyols having 2-5 hydroxyl groups and (3) hydroxyl terminated polyester compounds, not being alkyd resins, having 1-5 free hydroxyl groups and from 2-50 monomeric ester units (the G/P/HP-compound), or mixtures thereof.
The invention also relates to the preparation of such compositions and to the use of such reactive diluents for peroxides in radically curing of unsaturated polyester resins for structural applications.
摘要:
The invention relates to a peroxide solution of organic peroxide in an organic solvent, comprising at least one peroxide in a solvent, the solvent consisting of a hydrophobic alcohol wherein the main carbonated chain having the alcohol function comprises at least six carbon atoms, characterised in that it also comprises a second, hydrophilic alcohol solvent representing a maximum of 15% wt. % of the solution. The invention also relates to a thermohardenable composition comprising said solution, and to a method and a use relating to said composition.