Abstract: A system for cooling a hermetic motor includes a motor cooling refrigerant flow path configured to direct refrigerant from a condenser disposed along a refrigerant loop to a hermetic motor, and from the hermetic motor back to the refrigerant loop, and a housing of the hermetic motor disposed along the motor cooling refrigerant flow path and configured to receive the refrigerant from the condenser, wherein the housing of the hermetic motor comprises an annulus surrounding at least a portion of a stator of the hermetic motor, and wherein the annulus comprises a plurality of openings configured to direct refrigerant toward the stator and into a cavity of the housing of the hermetic motor.

Abstract: The invention relates to the use of a liquid, containing 0.1 to 100% of an amine or several amines of formula H2N—CH2(CHR2)x—(OCH2(CHR3)y)z—OR1, where R1=C1 to C6 alkyl, R2=H or CH3, R3=H or CH3, x=0 to 3, y=0 to 3, z=0 to 10 and 0 to 99.9% of any further solvent including piperazine and/or water for separating acid gas components from technical gases.

Abstract: The invention relates to a method for producing alkylene glycol diethers by reacting a linear or cyclic ether with an alkylene oxide in the presence of a Lewis acid. The method is characterized in that the Lewis acid is a mixture of 1 part by weight of HBF4 and/or BF3 and 0.1 to 10 parts by weight of H2SO4, HNO3 and/or H3PO4. The new catalyst system allows to reduce undesired by-products such as e.g. dioxan or dimethyltriethylene glycol, and to increase the quantity of valuable substances such as dimethyl glycol and dimethyl diglycol.

Abstract: The invention relates to the use of a liquid, containing 0.1 to 100% of an amine or several amines of formula H2N—CH2(CHR2)x—(OCH2(CHR3)y)z—OR1, where R1?C1 to C6 alkyl, R2?H or CH3, R3?H or CH3, x=0 to 3, y=0 to 3, z=0 to 10 and 0 to 99.9% of any further solvent including piperazine and/or water for separating acid gas components from technical gases.

Abstract: The invention relates to the use of an absorption liquid for purifying gases from gaseous acidic contaminants, the absorption liquid comprising A) 0.1 to 100% by weight of one or more amines of the formula I where R1 is H, C1-C6-alkyl, an aromatic radical having 6 to 18 carbon atoms or a radical of the formula 2 R2 is H, C1-C6-alkyl, an aromatic radical having 6 to 18 carbon atoms or a radical of the formula 3 R3 is C1-C6-alkyl or an aromatic radical having 6 to 18 carbon atoms R4 is H or CH3 R5 is H or CH3 x is a number from 0 to 3 y is a number from 0 to 3 z is an integer between 1 and 30, and also, if appropriate, B) 0 to 99.9% by weight of water, and/or C) 0 to 99.9% by weight of any desired solvent.

Abstract: The present invention provides a process for converting free hydroxyl groups of polyoxyalkylene glycols and/or polyoxyalkylene glycol monoethers by reacting at least one polyoxyalkylene glycol or at least one polyoxyalkylene glycol monoether with a base, and then alkylating or acylating it with a halohydrocarbon or acid halide in the presence of a reducing agent, the alkylation or acylation reaction being performed in the presence of atmospheric oxygen.

Abstract: The invention provides a process for preparing polyoxyalkylene glycol monoethers and/or diethers by reacting an alkoxide with an alkylating agent, which comprises adding water and block polymers which are obtainable from a compound which comprises from 1 to 30 carbon atoms and from 1 to 25 hydroxyl groups, amino groups or both by its blockwise alkoxylation with at least 2 different blocks of in each case from 1 to 200 mol of C2- to C4-alkylene oxide to the mixture of alkoxide, alkylating agent and polyoxyalkylene glycol ether which has formed.

Abstract: The invention provides a process for preparing polyoxyalkylene glycol monoethers and/or diethers by reacting an alkoxide with an alkylating agent, which comprises adding water and a compound of the formula 1 in which R2 is a straight-chain or branched C1- to C20-alkyl radical, p is from 1 to 75, X is one 1,2-alkylene group or different 1,2-alkylene groups having from 2 to 4 carbon atoms, and k is from 1 to 200 to the mixture of alkoxide, alkylating agent and polyoxyalkylene glycol ether which has formed.

Abstract: The invention provides a process for preparing polyoxyalkylene glycol monoethers and/or diethers by reacting an alkoxide with an alkylating agent, which comprises adding water and oligo- or polyethyleneimines which have been alkoxylated with from 1 to 100 C2- to C4-alkylene oxide groups or a mixture of such alkylene oxide groups per free NH group to the mixture of alkoxide, alkylating agent and polyoxyalkylene glycol ether which has formed.

Abstract: The invention provides a process for preparing alkylene glycol diethers of the formula (I) by converting compounds of the formula (II) in which R1 is hydrogen or C1— to C3-alkyl, R2 is hydrogen, CH3 or CH2—CH3 and n is from 5 to 500 in the liquid phase at temperatures between 170 and 300° C. in the presence of a Raney nickel catalyst which, based on the total weight of the catalyst, contains from 0.1 to 10% by weight of one or more other metals selected from transition groups I, VI and VII of the Periodic Table of the Elements.

Abstract: The invention relates to a method for producing alkylene glycol diethers by reacting a linear or cyclic ether with an alkylene oxide in the presence of a Lewis acid. The invention is characterized in that the reaction is continuously carried out in a micro reactor.

Abstract: The invention relates to a process for preparing alkylene glycols by hydration of alkylene oxides in the presence of polyalkylene glycol dialkyl ethers of the formula R1—O—[—(CH2CH2O)m(CH(CH3)CH2)—O]n—R2 in which m=0-100, n=0-100, where n+m is at least equal to 1, R1 is a C1- to C6-alkyl radical, R2 is a C1- to C6-alkyl radical, where R2 may be different from R1, with the proviso that for at least 50 mol % of the polyalkylene glycol dialkyl ether m+n is greater than or equal to 11.

Abstract: The invention provides a process for preparing alkylene glycol diethers of the formula (I) by reacting compounds of the formula (II) in which R1 is hydrogen or C1- to C3-alkyl, R2 is hydrogen, CH3 or CH2CH3, and n is from 1 to 4, in the liquid phase in the presence of catalysts at temperatures between 170 and 300° C., and continuously distilling off the compounds of the formula (I).

Abstract: The invention relates to the use of an absorption liquid for purifying gases from gaseous acidic contaminants, the absorption liquid comprising A) 0.1 to 100% by weight of one or more amines of the formula I where R1 is H, C1-C6-alkyl, an aromatic radical having 6 to 18 carbon atoms or a radical of the formula 2 R2 is H, C1-C6-alkyl, an aromatic radical having 6 to 18 carbon atoms or a radical of the formula 3 R3 is C1-C6-alkyl or an aromatic radical having 6 to 18 carbon atoms R4 is H or CH3 R5 is H or CH3 x is a number from 0 to 3 y is a number from 0 to 3 z is an integer between 1 and 30, and also, if appropriate, B) 0 to 99.9% by weight of water, and/or C) 0 to 99.9% by weight of any desired solvent.

Abstract: The invention relates to a process for preparing alkylene glycol diethers of the formula (I) by reacting compounds of the formula (II) in which R1 is hydrogen or C1 to C3 alkyl, R2 is hydrogen, CH3 or CH2—CH3 and n is from 5 to 500, in the liquid phase in the presence of Raney nickel at temperatures between 170 and 300° C.

Abstract: The present invention provides new coordinative catalysts for the polymerization of alkylene oxides.

Abstract: The present invention provides new coordinative catalysts for the polymerization of alkylene oxides.