Eastman Chemical Company

Eastman-kodak Company

Other

Larry Keith Johnson

Max Allen Weaver

Jason Clay Pearson

Phillip Michael Cook

Gerry Foust Rhodes

Michael John Cyr

Jos Simon De Wit

Slaton E Fry

Paul J Greene

Allen J Blankenship

David W Magouyrk

Robert J Eubanks

Disclosed are thermally-stable, anthraquinone colorant compounds (dyes) which contain one or more vinyl groups which render the compounds copolymerizable with reactive vinyl monomers to produce colored, polymeric compositions such as acrylate and methacrylate polymeric materials. The compounds possess good fastness (stability) to ultraviolet (UV) light, good solubility in vinyl monomers, good color strength and excellent thermal stability. Also disclosed are (1) coating composition comprising (i) one or more polymerizable vinyl compounds, (ii) one or more of the dye compounds described above, and (iii) a photoinitiator and (2) polymeric materials, i.e., polymers derived from one or more acrylic acid esters, one or more methacrylic acid esters, one or more other polymerizable vinyl compounds or mixtures of any two or more thereof, having copolymerized therein one or more of the anthraquinone colorant compounds.

Thermally stable, anthraquinone colorants containing copolymerizable vinyl groups

A constant-head soil permeameter for determining hydraulic conductivity of earthen materials is inserted into a borehole at the desired test depth. A calibrated reservoir, disposed on the ground surface, is attached thereto with a suitable length of hose. Water is added to the calibrated reservoir and allowed to flow freely into the borehole until an equilibrium level is reached in the borehole and inside the soil permeameter. The water flowing to the permeameter is throttled by buoyant float pressure that is greatly increased by a single lever, lever-lever, or lever-link-lever valve control assembly which provides considerable versatility and mechanical advantage, thereby allowing more constant head control and much greater depths of testing than previously attained by known permeameters. A filtered vent system, backflow check valve, and seals restrict entry of soil particles and debris, thereby minimizing cleaning and maintenance of the invention. The soil permeability is determined by solving appropriate mathematical equations which utilize the equilibrium height of water, rate of water flow, and dimensions of the borehole as input parameters.

Constant-head soil permeameter for determining the hydraulic conductivity of earthen materials at a wide range of depths

Disclosed are thermally-stable, colored, photopolymerizable compounds containing a vinyl group which are capable of being copolymerized with reactive vinyl monomers to produce colored compositions such as polyacrylates, polymethacrylates, polystyrene, etc. The compounds exhibit good thermal stability, fastness (stability) to UV-light, good solubility in the reactive monomers and good color strength.

Colorants containing copolymerizable vinyl groups and sulfonamide linkages

A constant-head soil permeameter for determining hydraulic conductivity of earthen materials is inserted into a borehole at the desired test depth. A calibrated reservoir, disposed on the ground surface, is attached thereto with a suitable length of hose. Water is added to the calibrated reservoir and allowed to flow freely into the borehole until an equilibrium level is reached in the borehole and inside the soil permeameter. The water flowing to the permeameter is throttled by buoyant float pressure that is greatly increased by a lever-and-link valve control assembly which provides considerable mechanical advantage, thereby allowing better constant head control and much greater depths of testing than previously attained by known permeameters. A filtered vent system, backflow check valve, and seals restrict entry of soil particles and debris, thereby minimizing cleaning and maintenance of the invention. The soil permeability is determined by solving appropriate mathematical equations which utilize the equilibrium height of water, rate of water flow, and dimensions of the borehole as input parameters.

Constant-head soil permeameter for determining the hydraulic conductivity of earthen materials

Provided are certain novel fluid ternary glycol mixtures. Also provided is an improved process for preparing polyesters comprised of residues of the glycols which comprise the fluid ternary glycol/water mixtures.

Ternary mixtures of glycols and water that retain fluidity at ambient

Chemically-modified, chlorinated, hydroxyimidized polyolefins having improved properties of solvent and/or humidity resistance and method for preparation thereof are disclosed. The novel materials prepared in accordance with the present invention are useful, for example, as primers for use with polymeric substrates.

Modified chlorinated polyolefins

A process for preparing a substituted 4-hydroxymethyl-1-phenyl-3-pyrazolidinone of the formula ##STR1## wherein R.sup.1 is alkyl and R.sup.2 is selected from the group consisting of halogen, alkoxy, nitro, alkyl, and aryl, comprising reacting a cyclic sulfite of the formula ##STR2## wherein R.sup.1 is as described above and X is halide, with an aromatic hydrazine of the formula ##STR3## wherein R.sup.2 is as described above, in the presence of a basic catalyst and a solvent.

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Kingsport, TN, United States of America

Larry Keith Johnson