Patents by Inventor Rainer Hoefer

Rainer Hoefer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4981893
    Abstract: Compounds corresponding to the following formulaR.sub.1 --(CH.sub.2).sub.m --O--(CH.sub.2 CH.sub.2).sub.n --R.sub.2in which R.sub.1 is the phenyl radical or a phenyl radical which is substituted by linear or branched alkyl radicals containing a total of from 1 to 18 carbon atoms, R.sub.2 is a C.sub.4 -C.sub.8 alkyl radical, m=0 or 1 and n=3 to 30, are used as dispersants with foam-inhibiting properties in aqueous polymer dispersions and latices.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: January 1, 1991
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Karl-Heinz Schmid, Adolf Asbeck, Uwe Held
  • Patent number: 4977207
    Abstract: A leveler coating composition comprising a water-dilutable polyurethane aqueous dispersion having a solids content of 10-50% by weight and a viscosity of 10-50,000 mPa.s; a process for manufacturing the coating; and a method for using it in automotive finishes.
    Type: Grant
    Filed: February 11, 1988
    Date of Patent: December 11, 1990
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Roland Gruetzmacher, Wolfgang Gress, Ulrich Nagorny
  • Patent number: 4826944
    Abstract: Reactive resin systems suitable for cast-molding polyurethanes comprise reactive isocyanates and chain extenders for the isocyanates comprising polyol addition products of C.sub.1 -C.sub.8 alcohols and epoxidized triglyceride oils: if desired, the polyol addition products used have been alkoxylated with C.sub.2 -C.sub.4 -alkylene oxides.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: May 2, 1989
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Bert Gruber, Alfred Meffert, Roland Gruetzmacher
  • Patent number: 4797222
    Abstract: A foam inhibitor mixture of compounds corresponding to the following formulae: ##STR1## in which R represents a glycerol residue, trimethylol ethane residue, trimethylol propane residue or a polyglycerol residue having a degree of polymerization x of from 2 to 6 and the indices y=(x-z+2), z=(x-y+2), a=1 to 15, b=50 to 250, c=1 to 15, d=50 to 250 and e=1 to 15, with the proviso that the sums (a+c+e)=2 to 20, (b+d)=50 to 250 and (c+e)=1 to 15 and y has a value of at least 1; R.sup.1 represents a straight-chain or branched-chain alkyl or alkenyl radical containing from 8 to 20 C-atoms or an aromatic alkyl radical containing from 12 to 20 C-atoms, R.sup.2 represents an alkyl radical containing from 3 to 8 C-atoms and n is a number of from 4 to 30. The mixture preferably contains from 99 to 70% by weight of the block polymer (I) and from 1 to 30% by weight of the emulsifier (II).
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: January 10, 1989
    Assignee: Henkel Kommaditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Karl H. Schmid, Adolf Asbeck, Uwe Held
  • Patent number: 4792582
    Abstract: A method for emulsifying, emulsion-stabilizing, and/or foam-inhibiting an aqueous polymer dispersion or latex by incorporating therein a polyglycol ether; and a polymer dispersion or latex composition containing such polyglycol ether.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: December 20, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Alfred Meffert, Robert Piorr, Bernd Wegemund, Uwe Held
  • Patent number: 4772670
    Abstract: Use of, and composition containing the reaction products of primary 2-alkyl-1-alkanols containing from 12 to 36 carbon atoms with ethylene oxide and/or propylene oxide as emulsifiers or co-emulsifiers in the emulsion polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: September 20, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Bernd Wegemund, Horst-Juergen Krause
  • Patent number: 4745231
    Abstract: Block polymers usable as defoamers have the following formula ##STR1## in which R represents a glycerol or polyglycerol function having a degree of polymerization x of from 1 to 6 and the indices y is equal to (x-z+2), z is equal to (x-y+2), a is equal to 1 to 15, b is equal to 50 to 200 c is equal to 1 to 15, d is equal to 20 to 150 and e is equal to 1 to 15, with the proviso that the sums (a+c+e) is equal to 2 to 20, (b+d) is equal to 50 to 250 and (c+e) is equal to 1 to 15, and y has a value of at least 1.The block polymers are prepared by reaction of glycerol or polyglycerol having a degree of polymerization x with ethylene oxide, then with propylene oxide and, finally, again with ethylene oxide, preferably in the presence of alkaline etherification catalysts.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: May 17, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Fritz Lange, Rainer Hoefer, Karl-Heinz Schmid, Adolf Asbeck, Klaus Herrmann
  • Patent number: 4689366
    Abstract: Surface-active tertiary alkylamines comprising ethoxylated adducts of the reaction product of long-chain olefin oxides with ammonia or amines are useful in the emulsion polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: August 25, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Rainer Hoefer
  • Patent number: 4657999
    Abstract: The use of alkyl glycosides of C.sub.8 -C.sub.22 alkanols and reducing sugars, in which one sugar chain containing on average from 1 to 10 sugar residues attached to one another by glycoside bonds is present for every alkyl group, as co-emulsifiers or emulsifiers in the emulsion polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: April 14, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Karl-Heinz Schmid, Bernd Wegemund
  • Patent number: 4623695
    Abstract: Low-viscosity acrylate hydrosols based on (meth)-acrylic acid esters and other monomers, such as styrene, methyl styrene, acrylonitrile, vinyl acetate and/or vinyl chloride, which are produced in the presence of a special mixed emulsifier of an alkyl phenol ether sulfate and an .alpha.-sulfocarboxylic acid and/or an ester thereof with a C.sub.1 to C.sub.4 -alcohol.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: November 18, 1986
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Karl-Heinz Schmid, Karl-Heinz Ackermann
  • Patent number: 4549002
    Abstract: An improved process for the emulsion polymerization of ethylenically unsaturated monomers in an aqueous emulsion, using as the primary emulsifier an ethoxylated C.sub.8-25 aliphatic vicinal diol.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: October 22, 1985
    Assignee: Henkel KGaA
    Inventors: Rainer Hoefer, Alfred Meffert, Bernd Wegemund
  • Patent number: 4529762
    Abstract: Compositions and processes for the aqueous emulsion polymerization of ethylenically unsaturated monomers using mixed emulsifiers containing(a) about 99.5 to about 10 parts by weight of an .alpha.-sulfocarboxylic acid alkyl ester containing from 8 to 24 carbon atoms in the carboxylic acid portion and from 1 to 4 carbon atoms in the alcohol portion, and(b) from about 0.5 to about 90 parts by weight of an .alpha.-sulfocarboxylic acid containing from 8 to 24 carbon atoms, and if desired,other anionic and/or non-anionic emulsifiers and/or protective colloids; the mixed emulsifier optionally being completely or partly present in salt form.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: July 16, 1985
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Karl Schmid, Bernd Wegemund, Bernhard Bartnick