Patents Assigned to AB Chem Dimension
  • Mechanical working in the presence of a multi-purpose cooling lubricant
    Patent number: 6989107
    Abstract: A method for the mechanical working of metals and alloys which comprises conducting the mechanical working in the presence of an aqueous cooling lubricant having a pH of 6-10 and containing a phosphate ester of the formula R1(oxyalkylene)nOP(O)(X)(OH)??(I), or (HO)2(O)P-(oxyalkylene)mOP(O)(OH)2??(II), where R1 is an alkyl group with 1-12 carbon atoms, oxyalkylene is a group containing 2-4 carbon atoms, n is a number from 1-20, X is hydroxyl, R1O or R1(oxyalkylene)nO, where R1, oxyalkylene and n have the meanings mentioned above, and m is a number from 4-40, or a salt thereof, and an alkenyl substituted succinic acid of the formula HOOCCH(R2)CH2COOH??(III), where R2 is an alkenyl group with 4-10 carbon atoms, or a salt thereof, or a mixture of any of the compounds I, II and III.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: January 24, 2006
    Assignee: AB Chem Dimension
    Inventor: Rolf Skold
  • Mechanical working in the presence of a metal containing copper or aluminum
    Patent number: 6602833
    Abstract: The present invention is directed to a method for mechanical working of a metal containing copper, aluminum or an alloy thereof. The method is carried out in the presence of an aqueous cooling lubricant containing an alkanol amine. The lubricant is capable of preventing and reducing the corrosion of both metals and iron.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: August 5, 2003
    Assignee: AB Chem Dimension
    Inventor: Rolf Skold
  • Aqueous metal working liquid
    Patent number: 6592775
    Abstract: The present invention relates to an aqueous metalworking liquid, which has the form of a clear solution at 20 ° C., is precipitated at a temperature higher than 20 ° C. and contains: (a) a polypropylene glycol compound containing 6-100 propyleneoxy groups and lacking the presence of hydrocarbons groups having more than 12 carbon atoms, and (b) at least one water-soluble anionic compound, selected from the group consisting of a phosphate ester or an ether carboxylate, the anionic compound containing 1-40 oxyalkylene groups having 2-4 carbon atoms and lacking presence of hydrocarbon groups with more than 12 carbon atoms. The metalworking liquid has excellent lubricating properties and can easily be worked up and reused without leaving troublesome coatings on the metal surfaces.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: July 15, 2003
    Assignee: AB Chem Dimension
    Inventor: Rolf Skold
  • Method for mechanical working in the presence of a cobalt-containing metal
    Patent number: 6432890
    Abstract: The present invention relates to a method for mechanically working of cobalt-containing metals or performing metalworking with a tool made of a metal containing cobalt. The method is carried out in the presence of an aqueous cooling lubricant containing a combination of an alkanolamine, a mono- or diphosphate ester and a mono- or dicarboxylic acid. The combination is capable of reducing both the release of cobalt ions and the corrosion of iron. In addition it also contributes essentially to the lubrication.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: August 13, 2002
    Assignee: AB Chem Dimension
    Inventor: Rolf Skold