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RohMax Additives GmbH Patents
Assignee:
RohMax Additives GmbH
Address:
Darmstadt, DE
No. of patents:
19
Patents:




Patent Number Title Of Patent Date Issued
7560420 Oil composition for lubricating an EGR equipped diesel engine and an EGR equipped diesel engine July 14, 2009
The present invention is directed to a lubricating oil composition, a diesel engine comprising a lubricating oil composition, and a method of lubricating a diesel engine provided with an exhaust gas recirculation system, comprising lubricating said engine with a lubricating oil compo
7553673 Quality control of a functional fluid June 30, 2009
The present invention describes use of use of a metal compound to control the quality of a functional fluid. Additionally, the present invention concerns a method for controlling the quality of a functional fluid comprising the steps of: adding a metal compound to a component of a lu
7470381 Functional fluid and the use thereof December 30, 2008
The present invention concerns a functional fluid comprising A) 1 to 99% by weight based on the total weight of the functional fluid of alkyl(meth)acrylate polymers obtainable by polymerizing a mixture of olefinically unsaturated monomers and B) 1 to 99% by weight based on the total
7452932 Highly stable polymer dispersions and method for the production thereof November 18, 2008
The present invention relates to a polymer dispersion having high stability, comprising A) at least one dispersed polyolefin, B) at least one dispersing component, C) mineral oil and D) at least one compound comprising (oligo)oxyalkyl groups.
7429555 Lubricating grease with high water resistance September 30, 2008
The present invention relates to lubricating greases comprising at least one thickening agent and at least one lubricating oil, wherein the lubricating grease contains at least one polymeric structure improver that can be obtained by polymerization of monomer compositions, which are
7250458 Stable polymer dispersions and method for the production thereof July 31, 2007
The present invention relates to a stable polymer dispersion comprising A) at least one dispersed polyolefin, B) at least one dispersing component, C) at least one ester and D) at least one ether comprising (oligo)oxyalkyl groups, the weight ratio of ester C) to ether D) being in the
6841695 Process for preparing dithioesters January 11, 2005
The present invention relates to a process for preparing dithioesters in which a dithiocarboxylic acid and/or a dithiocarboxylic salt is reacted with a vinyl compound and/or an alkyl compound which includes a leaving group, the reaction being carried out in a biphasic system in which one
6712991 Method of making a copolymer useful as viscosity index improving additive for hydraulic fluid March 30, 2004
A method for making a viscosity index improving copolymer includes heating a reaction mixture including from about 55 weight percent to about 99.5 weight percent of a first monomer selected from the group consisting of (C.sub.8 -C.sub.15)alkyl (meth)acrylates and mixtures thereof, from a
6689844 Process for synthesis of polymer compositions with reduced halogen content, polymer composition February 10, 2004
Polymer compositions with reduced living halogen content are used as additive to lubricating oils and are prepared by polymerizing at least one ethylenically unsaturated monomer using a) at least one initiator containing a transferable halogen and b) one or more metal catalysts conta
6639029 Process for continuous synthesis of polymer compositions as well as use of same October 28, 2003
The present invention relates to a process for synthesis of polymer compositions, wherein ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable atom or group of atoms and of one or more catalysts comprising at least one transition metal in
6610802 Process for synthesis of polymer compositions, polymer compositionS obtainable by the process, a August 26, 2003
The present invention relates to a process for synthesis of polymer compositions with reduced catalyst content, wherein ethylenically unsaturated monomers containing less than 0.5 wt % of ethylenically unsaturated monomers with at least one carboxylic group, sulfonic acid group and/o
6610801 Processes for synthesis of polymer compositions August 26, 2003
The present invention relates to processes for synthesis of poly(meth)acrylate compositions, wherein ethylenically unsaturated monomers are transformed to polymers by means of initiators containing a transferable group of atoms and of one or more catalysts comprising at least one tra
6458750 Engine oil composition with reduced deposit-formation tendency October 1, 2002
The invention relates to engine oil compositions with reduced deposit-formation tendency which contain between 0.05 and 10% by weight, in relation to the total weight of the engine oil composition, of an alkyl alkoxylate of formula (I), in which R 1 , R 2 and R 3 independently are hy
6458749 Method for improving low-temperature fluidity of lubricating oils using high-and-low-molecular w October 1, 2002
A method for improving the low temperature fluidity of lubricating oil compositions based on addition to lubricating oils of a mixture of selected high molecular weight and low molecular weight alkyl (meth)acrylate copolymers is disclosed. Combinations of low molecular weight alkyl (
6409778 Additive for biodiesel and biofuel oils June 25, 2002
The invention relates to a copolymer consisting of the following monomer components: a) 48-98 wt. % of compounds of formula (I), b) 2-30 wt. % of one or several oxygen-containing methacrylates of formula (II) and c) 0-30 wt. % of a methacrylate of formula (III) of styrol, the quantities
6403746 Method for preparation of a composition that contains polymer ester compounds with long-chain al June 11, 2002
This invention concerns a method for preparation of poly(meth)acrylate composition, in which ethylenically unsaturated monomers are polymerized by means of initiators that have a transferable atomic group, and one or more catalysts that include at least one transition metal, in the prese
6403745 Gradient copolymers, as well as a method for their preparation and their use June 11, 2002
This invention concerns gradient copolymers, that are obtainable by polymerizing a mixture of olefinically unsaturated monomers that consist ofa) 0 to 40% by weight of one or more ethylenically unsaturated ester compounds of formula (I) ##STR1##where R is hydrogen or methyl, R.sup.1
6391996 Copolymers obtainable by the ATRP method and a method for their preparation and their use May 21, 2002
This invention concerns copolymers, which are obtainable by ATRP methods, where a mixture of ethylenically unsaturated monomers consisting ofa) 0 to 40% by weight of one or more ethylenically unsaturated ester compounds of formula (I) ##STR1##where R is hydrogen or methyl, R.sup.1 means
6348554 Method for preparation of a liquid polymer composition and use of this composition February 19, 2002
The invention concerns a method for preparation of a liquid polymer composition, where ethylenically unsaturated monomers are polymerized by means of initiators that have a transferable atomic group, and one or more catalysts that contain at least one transition metal, in the presence of

 
 
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