The present invention provides a process for preparing a stable dispersion of a preformed polymer in a polyol in a single mixer. A preformed polymer is mixed under sufficient heat and shear to reduce its particle size to a desired size in the presence of a polyol. The present invention also provides stable dispersions of polymers in polyols and polyurethane formulations containing stable dispersions made by the process of the present invention.
Polyurethane Latexes, Processes For Preparing Them And Polymers Prepared Therewith
Rick Tabor - Missouri City TX, US Douglas Moore - Clute TX, US James Jakubowski - Midland MI, US Wayne Willkomm - Lake Jackson TX, US Ruben Solis - Richwood TX, US
International Classification:
C08K003/00
US Classification:
524/839000
Abstract:
Disclosed are stable aqueous polyurethane latexes prepared from prepolymer formulations including a polyisocyanate component and polyol component, wherein from 5 to 40 percent of the weight of the polyol component is ethylene oxide in the form of ethylene oxide applied as an end cap onto a propylene oxide or higher oxyalkylene polyoxyalkylene polyol, and no more than 45 percent of the weight of polyol component is ethylene oxide. These latexes are prepared without the use of organic solvents.
Thixotropic Mixtures Of Liquid Polyesters And Polymer-Treated Fillers
A filled resin composition having thixotropic properties is prepared by blending (a) a liquid polyester resin, and (b) a solid filler (such as calcium carbonate), which has been treated with an effective amount of a polymer prepared from (1) an addition polymerizable organic monomer which does not contain an acid group and (2) an addition polymerizable acid. The preferred polymer is ethylene/acrylic acid.
Polyurethane Foams Prepared From Mechanically Frothed Polyurethane Dispersions
Michael Y. Gribble - Wollerau, CH Rick L. Tabor - Lake Jackson TX James J. Jakubowski - Midland MI Alan K. Schrock - Lake Jackson TX Paulus C. J. M. Van Bellegem - Philippine, NL James G. Kennedy - Hulst, NL
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
C08J 900
US Classification:
521133
Abstract:
The present invention is polyurethane dispersion composition that can be mechanically frothed to yield a foam that has good resiliency. Frothed foams of the present invention can be useful in cushioned flooring applications such as attached cushion broadloom, carpet tiles, carpet underlay, or vinyl flooring. Frothed foams of the present invention can also be useful as coatings for various textiles and for diapers.
Treatment Of Carbon Fibers To Decrease Electrical Hazards Of Conductive Fiber Fragment Release
James J. Jakubowski - Midland MI Ravanasamudram V. Subramanian - Pullman WA
Assignee:
Washington State University Research Foundation - Pullman WA
International Classification:
C25D 1312
US Classification:
204181R
Abstract:
Carbon fibers are electrocoated by electrodeposition or electropolymerization to facilitate the formation of char, a nonconductive residue or fiber clumps when the coated fibers within a composite are subsequently exposed to fire. Coating materials or precursors are phosphorus compounds, titanates, polyimides, polyquinoxalines, nitriles, or boric acid.
Carrier Particle For The Froth Flotation Of Fine Ores
Wilfred C. Meyer - Midland MI James J. Jakubowski - Midland MI
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
B03D 114
US Classification:
209166
Abstract:
This invention is a froth flotation process for beneficiating finely sized mineral matter from a finely sized mineral ore pulp comprising floating the finely sized mineral ore pulp in a frothing aqueous medium comprising a collector and a carrier particle in an effective amount for beneficiating the finely sized mineral matter by flotation, wherein the carrier particles are adapted for selectively floating the finely sized mineral matter. The carrier particles of this invention should have a particle size and a density which are suitable for selectively beneficiating the finely sized mineral ore particles by froth flotation and have a surface treated with a condensation product, or acid derivative of a condensation product, of an alkanolamine with a fatty acid, a fatty acid ester, a dibasic fatty acid or a tribasic fatty acid, in a sufficient amount to render the carrier particle sufficiently hydrophobic to float in the frothing aqueous medium.
Insecticidal Compositions And Process For Preparation Thereof
Lisa J. Rheaume - Midland MI Julia A. Gegner - Eugene OR James J. Jakubowski - Midland MI Daniel H. Haigh - Sanford MI James Peters - Midland MI
Assignee:
DowElanco - Indianapolis IN
International Classification:
A01N 6300 A01N 2500 A01N 2534 C12N 120
US Classification:
424 931
Abstract:
The invention concerns certain insecticidal compositions of ingestible insecticides selected from the group consisting of DNA viruses, RNA viruses and bacteria of the order Bacillus such as, for example, Bacillus thuringiensis var. israelensis entrapped by a suitable charged polymer. The invention also concerns a process for the preparation of and the use of such insecticidal compositions.
Halogenated Polar Polymer Treatment Of Inorganic Fillers
James J. Jakubowski - Midland MI Victor E. Meyer - Midland MI Ronald R. Pelletier - Midland MI
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
B05D 700
US Classification:
428404
Abstract:
Filler particles useful for filling organic resins such as polyethylene are produced by mixing a filler, such as calcium carbonate, with a halogenated polar polymer such as a halogenated ethylene/acrylic acid copolymer. The fillers of the invention impart improved physical properties such as tensile, flexural and impact strength to organic resins.