The Dow Chemical Company

Noble Manufacturing Company

Dupont Dow Elastomers Inc.

James R Bethea

Samuel A Ogoe

Oliver C Ainsworth

John W Muskopf

Edwin J Wilson

David W Liou

Craig L Werling

John W Cocup

Yunwa Wilson Cheung

Brian W Walther

Martin J Guest

Deepak R Parikh

Stephen R Betso

Laura Bauerle Weaver

Larry Alan Meiske

Robert R Turley

John J Gathers

John O Bieser

Edwin R Feig

Henry George Heck

Joseph L Allison

Stephen R Ellebracht

Clifton T Knight

S Douglas Stain, Jr

David R Flores

Robert G Bryan, Jr

Michael Francis Martin

Rheology-modified thermoplastic elastomer compositions are prepared by peroxide modification of a melt blend of an ethylene/&agr;-olefin polymer or a diene-modified ethylene/&agr;-olefin polymer and a high melting polymer such as polypropylene or a propylene/&agr;-olefin copolymer. The resulting compositions have an elastomeric phase, a non-elastomeric phase and certain physical properties that exceed those of a like composition that is not rheology-modified. The compositions can be used to make a variety of articles of manufacture via conventional procedures.

Rheology-modified thermoplastic elastomer compositions and articles fabricated therefrom

The subject invention is directed to a polyethylene composition comprising from about 5 to about 70 weight percent of a homogeneous ethylene/&agr;-olefin interpolymer, from about 30 to about 95 weight percent of at least one filler, and from about 0.1 weight percent to less than about 10 weight percent of at least one functionalized polyethylene. The polyethylene compositions of the present invention exhibit high tensile strength, high indentation resistance and filler holding capacity, and are especially useful for floor tile and sheeting applications.

Filled polyethylene compositions

Artificial latexes that are film forming at room temperature can be prepared from a copolymer of ethylene and a C.sub.3 -C.sub.20 .alpha.-olefin. The copolymer is characterized by having a polydispersity index not greater than 2.5; random distribution of comonomer units along the polymer backbone; and a homogeneity index of at least 75. The copolymer preferably contains no polar substituents, which are generally necessary to make useful latexes from polyethylene.

Aqueous dispersions of linear olefin copolymers

Properties of interpolymers of .alpha.-olefin/vinylidene aromatic monomer are enhanced with plasticizers selected from phthalate esters, trimellitate esters, benzoates, aliphatic diesters, epoxy compounds, phosphate esters, glutarates, polymeric plasticizers (polyesters of glycols and aliphatic dicarboxylic acids) and oils. These plasticized interpolymers are useful in a wide range of applications including films, sheet, adhesives, sealants and molded parts.

Plasticizied .alpha.-olefin/vinylidene aromatic monomer of hindered

A blend of polycarbonate and chlorinated polyethylene which has a desirable balance of impact and ignition resistance properties.

Blends of polycarbonate and chlorinated polyethylene

The present invention concerns a polymeric composition formed from a vinylidene chloride interpolymer; an olefinic wax and oil and, in one embodiment, a salt of an acid; and in another embodiment, a polyolefin containing up to a minor amount of oxygen, said polyolefin being capable of lowering the frictional coefficient and the mechanical energy to extrude of the polymeric composition.

Extrudable polymeric compositions

A modular coextrusion feedblock suitable for use in conjunction with melt processing vinyl polymers without excessive extruder head pressure is provided. The feedblock is designed for rapid disassembly and reassembly to minimize downtime.

Low pressure drop, modular coextrusion feedblock

An arrangement and method for tiling bath enclosures, shower stalls, and the like, comprises providing a sheet of imperforate, substantially waterproof material with a dry, solvent-based film adhesive formed on the exterior side of the sheet. The interior side of the sheet is adhered to those substrate walls to be tiled, and the tile adhesive is applied over the film adhesive on the exterior side of the sheet. The tile adhesive includes a solvent which partially dissolves the film adhesive, and a cross-linking agent which securely bonds the adhesives to each other and the waterproof sheet. Ceramic tiles are pressed into the wet adhesive, and are fixedly anchored in place as the adhesive cures, such that the waterproof sheet forms a barrier between the tiles and the substrate walls which is substantially impervious to moisture.

Tiling arrangement

An arrangement and method for tiling bath enclosures, shower stalls, and the like, comprises providing a sheet of imperforate, substantially waterproof material with a dry, solvent-based film adhesive formed on the exterior side of the sheet. The interior side of the sheet is adhered to those substrate walls to be tiled, and tile adhesive is applied over the film adhesive on the exterior side of the sheet. The tile adhesive includes a solvent which partially dissolves the film adhesive, and a crosslinking agent which securely bonds the adhesives to each other and the waterproof sheet. Ceramic tiles are pressed into the wet adhesive, and are fixedly anchored in place as the adhesive cures, such that the waterproof sheet forms a barrier between the tiles and the substrate walls which is substantially impervious to moisture.

Tiling arrangement and method

Chlorinated olefin polymer compositions having unexpectedly high tensile impact strength values and resistance to ignition and burning are composed essentially of an admixture of (1) a normally solid, linear olefin polymer having a bulk density of from about 22 to about 36 pounds/cubic foot with the individual particles thereof being predominantly in the range of at least 300 to about 800 microns in size, the olefin polymer having from about 1 to about 20 percent by weight of chemically combined chlorine substantially heterogeneously distributed along the outer surfaces of the polymer particles; such chlorine being introduced in the substantial absence of oxygen and at temperatures not substantially exceeding about 90.degree. C. while the olefin polymer particles are maintained in a fluidized bed state; and (2) from about 0.1 to about 10 percent based on polymer weight of antimony trioxide, and, optionally, up to about 5 percent based on polymer weight of certain bromine containing compounds.

Chlorinated olefin polymer compositions stabilized with antimony trioxide

Growing community of inventors

Baton Rouge, LA, United States of America

James R Bethea