Abstract: A method of and system for recovering a dielectric fluid used for immersion cooling of electronic devices, the method including filtering the dielectric fluid to remove a first group of solid contaminants; distilling the filtered dielectric fluid in one or more distillation tanks to produce a vaporized dielectric fluid; separating the vaporized dielectric fluid from less volatile contaminants, such that the vaporized dielectric fluid is introduced as a condensate into a circulation tank; circulating the condensate by pumping the condensate from the circulation tank through one or more filters; filtering the circulating condensate through the filter(s) to remove a second group of contaminants; and returning the filtered condensate to the circulation tank.

Abstract: The present invention disclosed a preparation method of parylene AF4, which provides a reactant and a reducing agent with the use of catalyst or exposure to UV light with photo-initiator, to shorten the reaction time as a result of minimized the byproduct(s) formation, and obtain high purity (>99.0%) of parylene AF4 product under high concentrated reaction mixture.

Abstract: An amorphous catalyst support comprising at least a first oxide selected from the group consisting of: silica, germanium oxide, titanium oxide, zirconium oxide or mixtures thereof, preferably silica gel beads or diatomaceous earth; a group 3 metal oxide; and anions in an amount not greater than 10% by weight of the catalyst support; wherein the group 3 metal oxide is incorporated in the first oxide structure at the molecular level. The catalyst support is prepared by (a) mixing the first oxide, with an anhydrous source of the group 3 metal oxide, and water, at a pH above 11, thus forming a suspension, (b) washing the catalyst support with water, (c) separating the catalyst support from the water, and (d) optionally drying and/or calcining the catalyst support. A catalyst based on such a support has improved catalytic properties.

Abstract: The present invention disclosed a preparation method of parylene AF4, which provides a reactant and a reducing agent with the use of catalyst or exposure to UV light with photo-initiator, to shorten the reaction time as a result of minimized the byproduct(s) formation, and obtain high purity (>99.0%) of parylene AF4 product under high concentrated reaction mixture.

Abstract: The invention provides compounds of formula I: or salts thereof as described herein. The invention also provides pharmaceutical compositions comprising a compound of formula I and therapeutic methods for treating cancer.

Abstract: An amorphous catalyst support comprising at least a first oxide selected from the group consisting of: silica, germanium oxide, titanium oxide, zirconium oxide or mixtures thereof, preferably silica gel beads or diatomaceous earth; a group 3 metal oxide; and anions in an amount not greater than 10% by weight of the catalyst support; wherein the group 3 metal oxide is incorporated in the first oxide structure at the molecular level. The catalyst support is prepared by (a) mixing the first oxide, with an anhydrous source of the group 3 metal oxide, and water, at a pH above 11, thus forming a suspension, (b) washing the catalyst support with water, (c) separating the catalyst support from the water, and (d) optionally drying and/or calcining the catalyst support. A catalyst based on such a support has improved catalytic properties.

Abstract: Anthraquinones are described which are antihelminthic and in particular, are useful in compositions for inhibiting Schistosoma sp. in vitro or in vivo. The preferred anthraquinones have the formula: wherein R1, R2, R3, and R4 are each hydrogen, hydroxy, halogen, alkyl, substituted alkyl, alkene, substituted alkene, alkyne, aryl, substituted aryl, cyclic, substituted cyclic, acid group, carbohydrate, or combination thereof, R is a group containing 1 to 12 carbons such as methyl, alkyl, substituted alkyl, aldehyde, hydroxy, hydroxymethyl, acid group, carbohydrate, or combination thereof, and the halogen is I, F, Br, or Cl.

Abstract: Anthraquinones are described which are antihelminthic and in particular, are useful in compositions for inhibiting Schistosoma sp. in vitro or in vivo. The preferred anthraquinones have the formula: wherein R1, R2, R3, and R4 are each hydrogen, hydroxy, halogen, alkyl, substituted alkyl, alkene, substituted alkene, alkyne, aryl, substituted aryl, cyclic, substituted cyclic, acid group, carbohydrate, or combination thereof, R is a group containing 1 to 12 carbons such as methyl, alkyl, substituted alkyl, aldehyde, hydroxy, hydroxymethyl, acid group, carbohydrate, or combination thereof, and the halogen is I, F, Br, or Cl.

Abstract: Anthraquinones are described which have anticancer or antitumor activity and which are useful for inhibiting cancer cells and cells comprising tumors in vitro or in vivo. Preferably, the anthraquinones have the chemical formula: wherein R1 is selected from the group consisting of hydrogen, alkyl, and substituted alkyl; R2 is a group containing 1-12 carbons selected from the group consisting of alkyl, substituted alkyl, aldehyde, hydroxy, hydroxymethyl, acid group, carbohydrate and combinations thereof; and R3 is a group containing 1 to 12 carbons selected from the group consisting of methyl, alkyl, substituted alkyl, aldehyde, hydroxy, hydroxymethyl, acid group, carbohydrate, and combinations thereof.

Abstract: Anthraquinones are described which are antihelminthic and in particular, are useful in compositions for inhibiting Schistosoma sp. in vitro or in vivo. The preferred anthraquinones have the formula: wherein R1, R2, R3, and R4 are each hydrogen, hydroxy, halogen, alkyl, substituted alkyl, alkene, substituted alkene, alkyne, aryl, substituted aryl, cyclic, substituted cyclic, acid group, carbohydrate, or combination thereof, R is a group containing 1 to 12 carbons such as methyl, alkyl, substituted alkyl, aldehyde, hydroxy, hydroxymethyl, acid group, carbohydrate, or combination thereof, and the halogen is I, F, Br, or Cl.

Abstract: Anthraquinones are described which are antihelminthic and in particular, are useful in compositions for inhibiting Schistosoma sp. in vitro or in vivo. The preferred anthraquinones have the formula: wherein R1, R2, R3, and R4 are each hydrogen, hydroxy, halogen, alkyl, substituted alkyl, alkene, substituted alkene, alkyne, aryl, substituted aryl, cyclic, substituted cyclic, acid group, carbohydrate, or combination thereof, R is a group containing 1 to 12 carbons such as methyl, alkyl, substituted alkyl, aldehyde, hydroxy, hydroxymethyl, acid group, carbohydrate, or combination thereof, and the halogen is I, F, Br, or Cl.

Abstract: A cyclic anthraquinone process for producing hydrogen peroxide using at least two differently substituted 2-alkylanthraquinones and/or their tetrahydro derivatives. The working solution to be used contains (i) at least one reaction carrier from the series 2-(4-methyl-3-pentenyl) anthraquinone (IHEAQ), 2-(4-methylpentyl) anthraquinone (IHAQ) and their di- and tetrahydro derivatives such as, in particular 2-(4-methylpentyl)-&bgr;-tetrahydroanthraquinone (THIHAQ), and (ii) at least one reaction carrier from the series of the 2-(C1- to C5)-alkylanthraquinones, especially 2-ethylanthraquinone (EAQ), and their tetrahydro derivatives. The reaction carriers according to (i) make up 5 to 95 molar %, especially 20 to 50 molar % of all reaction carrier. The method is distinguished by greater H2O2 capacity, improved hydrogenation kinetics and lesser susceptibility to disturbances. A method for making THIHAQ is also disclosed.

Abstract: The invention relates to a process for the preparation of substituted anthraquinones represented by the general formula (I): ##STR1## by Diels-Alder reaction between a 1,4-naphthoquinone of general formula (II): ##STR2## and an acyclic diene of formula (III):CH.sub.2 .dbd.CR--CH.dbd.CH--OR.sub.3 (III)followed by an oxidizing deprotection reaction by means of the Jones reagent, in order to obtain the substituted anthraquinone of general formula (I).Application to the preparation of rheins of use in pharmaceuticals.

Abstract: Anthraquinone derivatives are constructed for alkylation of target molecules. The anthraquinone derivative includes an anthraquinone ring system which has been modified by the addition of inducibly reactive substituents at positions on the ring system. The anthraquinone ring system can be selectively activated for alkylation of a target molecule. The substituents may be from 1 to 4 methyl groups, whereupon activation is achieved by a photochemical signal. In an additional alternative embodiment, the inducible reactive substituents may include both methyl groups and substituted methylene groups. In this embodiment, the activation of the anthraquinone derivative is achieved by photochemical and/or reductive signals. Alternatively, the substituents may be from 1 to 8 methyl groups modified to include a reactive group, whereupon activation is achieved by a chemical or enzymatic reductive signal. The anthraquinone derivatives of the invention may be used for non-specific modification of target molecules.

Abstract: Tert-amyl compounds of the general formula I ##STR1## and novel processes for preparing 2-tert-amylbutadiene by dehydrating 3,4,4-trimethylhex-1-en-3-ol at from 100.degree. to 350.degree. C. and from 0.01 to 50 bar on acidic catalysts, its preparation by partially hydrogenating 3,4,4-trimethyl-hex-1-yn-03-ol at from 0.degree. to 50.degree. C. and from 0.01 to 50 bar and its preparation by reacting tert-amyl methyl ketone (3,3-dimethylpentan-2-one) with acetylene in the presence of basic catalysts at from 0.degree. to 60.degree. C. and from 0.01 to 50 bar, and also the preparation of 2-tert-amylanthraquinone by reacting 2-tert-amylbutadiene with 1,4-naphthoquinone at from 20.degree. to 200.degree. C. and from 0.01 to 50 bar to give 2-tert-amyl-1,4,4a,9a-tetrahydroanthraquinone and then oxidizing the latter in the presence of a strong base at from 0.degree. to 50.degree. C. are described.

Abstract: A method for the preparation of a mixture of fused ring quinone type compounds from lignin and lignin-derived substances. The mixture of fused ring quinone compounds has been found useful in the wood pulping process as an accelerator in the degradation and separation of wood lignin from the other principal wood constituents, cellulose and hemicellulose.