Patents Represented by Attorney Albin R. Lindstrom
  • Patent number: 4420416
    Abstract: Unsaturated esters can be prepared from dicarboxylic acids and dibromoneopentyl glycol with improved resin color in a shorter reaction time with minimal corrosion of metallic reaction vessels and with a net energy saving by the process using an aryl sulfonic acid as the esterification catalyst and following completion of the reaction neutralizing the acid catalyst.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: December 13, 1983
    Assignee: The Dow Chemical Company
    Inventors: Eric R. Larsen, Ernest L. Ecker
  • Patent number: 4296227
    Abstract: Polyether resins of the formula XA.sub.m wherein A is of the formula ##STR1## and X, R, R' and R" are specified substituents are disclosed.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: October 20, 1981
    Assignee: The Dow Chemical Company
    Inventors: Harold O. Seeburger, George J. Atchison, Violete L. Stevens
  • Patent number: 4085160
    Abstract: Pre-accelerated vinyl ester resin compositions containing N-phenyl morpholine, for example, have exceptionally good storage stability and exhibit little or no drift in gel time over extended periods of storage. In combination with benzoyl peroxide as a catalyst, the resins cure readily at ambient temperature.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: April 18, 1978
    Assignee: The Dow Chemical Company
    Inventors: Thomas F. Anderson, Arlington L. Hartless
  • Patent number: 4083890
    Abstract: Unsaturated resin compositions, which are curable at elevated temperatures to temperatures below 0.degree. C and which contain a hydroperoxide as the catalyst and a soluble organic vanadium compound as a cure promoter or accelerator, are retarded against gelation without inhibiting the cure by the addition of a ketone peroxide.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: April 11, 1978
    Assignee: The Dow Chemical Company
    Inventors: Stevens S. Drake, Harold E. Rossow
  • Patent number: 4080304
    Abstract: A liquid composition exhibiting reversible solution/emulsion phase transition to provide a relatively constant viscosity/temperature relationship is provided with a hydrocarbon oil and a minor amount of an interpolymer of at least one hydrocarbon monomer and at least one dispersant monomer having an oil soluble pendant moiety wherein the interpolymer is soluble in the oil above a characteristic transition temperature and wherein the dispersant monomer is in sufficient amount to maintain the interpolymer in a stable colloidal dispersion below that transition temperature.
    Type: Grant
    Filed: October 6, 1976
    Date of Patent: March 21, 1978
    Assignee: The Dow Chemical Company
    Inventor: Harry A. Smith
  • Patent number: 4071400
    Abstract: Erosion of soil is inhibited by forming a wind and rain resistant mat thereon by the method whereby a water soluble cellulose ether is dispersed in a latex containing at least 2.0 percent solids of an interpolymer of an alkenyl aromatic monomer, a conjugated diolefin and an unsaturated carboxylic acid and an organo sulfonate; the composition diluted, plant fibers dispersed therein and the so formed dispersion deposited on the soil in the form of a covering layer.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: January 31, 1978
    Assignee: The Dow Chemical Company
    Inventor: Erwin M. Jankowiak
  • Patent number: 4071463
    Abstract: A cleaning formulation for cleaning stubborn stains comprises an aqueous solution of (a) an alkali metal alkyl sulfate wherein the alkyl is a straight chain of from about 6 to 20 carbon atoms, (b) an alkylated diphenyl oxide sulfonic acid alkali metal salt, such as sodium dodecyl diphenyl oxide disulfonate, (c) a branched chain alkyl aryl sulfonate wherein the alkyl group contains from 8 to 18 carbon atoms or (d) mixtures thereof as a detergent with less than one weight percent of sodium hypochlorite and with an amount of an alkaline builder to maintain the pH above about 11.0.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: January 31, 1978
    Assignee: The Dow Chemical Company
    Inventor: Alfred F. Steinhauer
  • Patent number: 4038265
    Abstract: Nonionic water soluble thickening agents are prepared by copolymerizing about 1 to 5 mole percent of a vinyl benzyl ether having the formula ##STR1## and the balance to make 100 mole percent of acrylamide.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: July 26, 1977
    Assignee: The Dow Chemical Company
    Inventors: Syamalarao Evani, Frederick P. Corson
  • Patent number: 4029874
    Abstract: Nonionic water soluble thickening agents are prepared by copolymerizing about 1 to 5 mole percent of a vinyl benzyl ether having the formula ##STR1## and the balance to make 100 mole percent of acrylamide.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: June 14, 1977
    Assignee: The Dow Chemical Company
    Inventors: Syamalarao Evani, Frederick P. Corson
  • Patent number: 4029872
    Abstract: Nonionic water soluble thickening agents are prepared by copolymerizing about 1 to 5 mole percent of a vinyl benzyl ether having the formula ##STR1## and the balance to make 100 mole percent of acrylamide.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: June 14, 1977
    Assignee: The Dow Chemical Company
    Inventors: Syamalarao Evani, Frederick P. Corson
  • Patent number: 4029873
    Abstract: Nonionic water soluble thickening agents are prepared by copolymerizing about 1 to 5 mole percent of a vinyl benzyl ether having the formula ##STR1## and the balance to make 100 mole percent of acrylamide.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: June 14, 1977
    Assignee: The Dow Chemical Company
    Inventors: Syamalarao Evani, Frederick P. Corson
  • Patent number: 4025596
    Abstract: Finely divided mineral solids are pelletized by uniformly blending the solids with a binder consisting essentially of an aqueous film forming latex of a water insoluble polymer after which the blend is shaped and dried. The binder preferably also contains a water dispersible agglutinant, such as wheat flour or bentonite.
    Type: Grant
    Filed: October 3, 1973
    Date of Patent: May 24, 1977
    Assignee: The Dow Chemical Company
    Inventors: Christ F. Parks, Kenneth H. Nimerick
  • Patent number: 4025484
    Abstract: Dispersions of finely divided particulate solids in an organic liquid in which the solids are insoluble are stabilized by the addition of a polymeric dispersant having a degree of polymerization of about 10 to 100. An example of the polymeric dispersant is an interpolymer of styrene, maleic anhydride and a vinyl benzyl ether of ethoxylated nonyl phenol.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: May 24, 1977
    Assignee: The Dow Chemical Company
    Inventors: Syamalarao Evani, Dennis McKeever, Russell J. Raymond
  • Patent number: 3996307
    Abstract: The improvement is obtained by converting at least about ten percent of the aliphatic hydroxyl groups present in the vinyl ester resin to ketal groups by reacting the hydroxyl group with an isopropenyl alkyl ether.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: December 7, 1976
    Assignee: The Dow Chemical Company
    Inventors: Daniel J. Najvar, Jerry M. Hawkins
  • Patent number: 3983167
    Abstract: The monomers of this invention have the formula ##EQU1## where R is H, methyl or phenyl, R.sub.1 is hydrogen or methyl, R.sub.2 is an alkylene radical of 2 to 4 carbons and R.sub.3 is an alkyl of 1 to about 6 carbon atoms or cycloalkyl radical of 3 to about 6 carbons.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: September 28, 1976
    Assignee: The Dow Chemical Company
    Inventors: Daniel J. Najvar, Jerry M. Hawkins
  • Patent number: 3968167
    Abstract: Formaldehyde is reacted with a polythiol to give novel methylol derivatives of the polythiol. The methylol derivatives are useful in curing polyepoxides.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: July 6, 1976
    Assignee: The Dow Chemical Company
    Inventor: Richard A. Hickner
  • Patent number: 3963684
    Abstract: Nonionic water soluble thickening agents are prepared by copolymerizing about 1 to 5 mole percent of a vinyl benzyl ether having the formula ##SPC1##And the balance to make 100 mole percent of acrylamide.
    Type: Grant
    Filed: July 18, 1974
    Date of Patent: June 15, 1976
    Assignee: The Dow Chemical Company
    Inventors: Syamalarao Evani, Frederick P. Corson
  • Patent number: 3962186
    Abstract: Formaldehyde is reacted with a polythiol to give novel methylol derivatives of the polythiol. The methylol derivatives are useful in curing polyepoxides.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: June 8, 1976
    Assignee: The Dow Chemical Company
    Inventor: Richard A. Hickner
  • Patent number: RE28950
    Abstract: Straw mats useful for covering soil to prevent wind and rain erosion are made by randomly distributing straw into a layer and binding the stalks together at their points of contact with at least about 75 pounds per ton of straw of a water resistant adhesive comprising a polymer of an alkenyl aromatic monomer, an open chain conjugated diene and an unsaturated carboxylic monomer blended with a water soluble cellulose ether and with an organo sulfonate.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: August 31, 1976
    Assignee: The Dow Chemical Company
    Inventors: Erwin M. Jankowiak, Gerald H. Brandt
  • Patent number: RE29586
    Abstract: Coatings may be cured by this process below 50.degree. F. and at temperatures as low as -10.degree. F. Suitable coating compositions comprise a solution in an inert organic solvent of (1) a polyaziridinyl adduct having more than one aziridinyl hydroxyalkyl group per molecule and (2) a coreactant which may be a dicarboxylic acid anhydride or a polyfunctional material having more than one anhydride, .[.oxirane.]. .Iadd.glycidyl.Iaddend., thiol, sulfonic acid or carboxylic group per molecule.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: March 21, 1978
    Assignee: The Dow Chemical Company
    Inventors: Thomas R. Merlino, John H. Flickinger, Russell T. McFadden