The Dow Chemical Company

Dow Global Technolgoies LLC

Other

Kyung W Suh

Daniel D Imeokparia

Creston D Shmidt

William Gerald Stobby

Andrew N Paquet

Francis P McCullough, Jr

Chung P Park

Bruce A Malone

Martin H Tusim

Arnold M Bartz

Martin K Hitchcock

Ken Franklin

R Vernon Snelgrove

Christopher P Christenson

Johan A Thoen

Chung Poo Park

Chau Van Vo

Martin C Cornell

Alan E Platt

Burton D Brubaker

Timothy W Rhoads

Takao Kadota

Jerry L Severson

Thomas E Wessel

Michael J Ennis

Michio Yamada

David C Krueger

Burch E Zehner

Mehmet Demirors

Bharat Indu Chaudhary

Duane B Priddy, Sr

John Bernard Horstman

Wenbin Liang

Robert A Kirchhoff

Mark Alan Barger

David M Hall

Seema V Karande

H James Harwood

Robert L Sammler

Harvey C Tung

Richard F Fibiger

Chai-Jing Chou

Jin Zhao

Steven R Mitchell

Jitka H Solc

Richard E Skochdopole

Yohannes Chonde

Charles R Amos, Jr

Kevin R Hughes

James G Kennedy

George A Mackey

Joseph A Schomaker

Masayuki Wakabayashi

Creston D Schmidt

Creston D Shimdt

Daniel D Imeopkaria

Malcolm E Leduc

Graydon Wayne Killingbeck

Manuel S Ratafia

Jonathan R Jones

Richard L Hurps

John M Kennedy

An improved process for making a structural foamed polymer, a multilayer polymer film, sheet or tube, a pultrusion polymer profile, a compression molded extruded fiber reinforced polymer pre-form, a strand foamed polymer and a SCORIM formed polymer article. The improvement includes the step of dispersing a multi-layered silicate material with the polymer so that the polymer has dispersed therein single layers of silicate material, double layers of silicate material, triple layers of silicate material, four layers of silicate material, five layers of silicate material and more than five layers of silicate material, the volume percent of the one, two, three, four and five layers of silicate material greater than the volume percent of the more then five layers of silicate material. In each of the above embodiments an important benefit of the instant invention is the orientation of the plane of the layers of silicate material. Preferably, most of the layers of silicate material have substantially the same orientation within thirty degrees of angle. Such orientation improves the properties of the product and provides a practical way to make larger products. The amount of multi-layered silicate material used is preferably between one and twenty percent.

Nanocomposite articles and process for making

Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proximate to large cells. The resulting multimodal foams have particular utility as thermal insulating materials.

Water-free preparation process for multimodal thermoplastic polymer foam and foam therefrom

Disclosed are cyclic phosphate esters of fumarate- or maleic acids suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compounds to impart flame resistant properties to the resultant copolymers.

Phosphorous-containing monomers and flame retardant high impact monovinylidene aromatic polymer compositions derived therefrom

The present invention relates to a foam, a process for preparing the foam and an article containing the foam. The foam contains a coupled propylene polymer and has a density in of from 9.6 to 801 kg/m and has either a foamability factor of more than 1.8 to less than 2.8 and an open cell content less than 20 percent, or a foamability factor of at least 2.8 and less than 15 and an open cell content of less than 50 percent. The process includes heating a coupled propylene polymer having a melt flow rate from 0.2 to 20 g/10 min and a melt strength of at least 39 cN to a molten state to produce a molten polymer material and mixing said molten polymer material with a blowing agent under conditions to produce a foamed material having a density in the range of from 9.6 to 801 kg/m .

Propylene polymer foams

A process for making a polymer foam sheet, which comprises (i) extruding through an annular extrusion die a foamable composition comprising at least one polypropylene polymer and at least one blowing agent, at a pressure, temperature, and extrusion rate sufficient to prevent foaming of the composition prior to exiting the die, under conditions sufficient to form a foam tube having a density of at least 16 kg/m,and no greater than 200 kg/m,, an open cell content of less than 70 percent, a circumference of at least 1 meter, and a foam thickness of at least 2 mm and no greater than 25 mm, wherein the blowing agent is used in an amount of from 0.2 to 4.5 moles per kg of polymer, (ii) allowing the foam to cool to a temperature below the melt temperature of the polypropylene, and (iii) cutting the tube of foam along its radius to form a foam sheet, wherein at least 70 percent by weight of the polymer in such sheet is a polypropylene having a melt strength in the range of from 25 to 60 cN when measured at 190&deg; C.

Method of forming a thermoformable polypropylene foam sheet

Disclosed is an extruded, dimensionally stable, closed cell alkenyl aromatic polymer foam. The foam comprises an alkenyl aromatic polymer material greater than 50 percent by weight of alkenyl aromatic monomeric units. The foam has a density of about 16 to about 64 kilograms per cubic meter. The foam has a thickness in cross section of 15 millimeters or more. The foam has a blowing agent composition comprising a primary blowing agent of about 70 to about 95 weight percent 1,1,2,2-tetrafluoroethane and a secondary blowing agent comprising about 30 to about 5 weight percent based upon the total moles of the blowing agent composition. The secondary blowing agent being selected from the group consisting essentially of 1,1,1,2-tetrafluoroethane, carbon dioxide, nitrogen, argon, and water. Further disclosed is a process for making the foam.

Foams comprising HFC-134 and a low solubility co-blowing agent and a process for making

An energy absorbing article having a direction in which impact resistance is desired is formed of extruded thermoplastic foam exhibit anisotropic compressive strength. The extrusion direction of the thermoplastic foam is aligned substantially parallel with the direction in which impact resistance is desired to provide an energy absorbing article exhibiting a high ratio of compressive strength to weight.

Energy absorbing articles of extruded thermoplastic foams

Foamed polymeric materials exhibiting improved heat resistant properties and improved mechanical properties, as compared with known foamed styrene polymer materials, are obtained by expanding a polymer blend including a syndiotactic styrene polymer and an amount of an amorphous polymeric material which will impart enhanced heat resistant properties to the blend.

High temperature syndiotactic styrene polymer foam

The present invention pertains to a multilayer foamed flooring and wall product. The inventive product is a resilient cushion foam flooring and wall product that is free of polyvinyl chloride (PVC), plasticizers and heavy metal stabilizer. The product is made of a multilayer top layer which is integrated with a latex or polyolefin polymer foam back layer. The product has particular utility in the heterogeneous flooring market and can be prepared using ordinary PVC melt processing equipment.

PVC-free foamed flooring and wall coverings

Disclosed is an extruded, open-cell microcellular alkenyl aromatic polymer foam useful in insulating applications. The foam has an open cell content of about 70 percent or more. The foam has an average cell size of about 70 micrometers or less. The foam is particularly useful in evacuated or vacuum insulation panels. Further disclosed is a process for making the open-cell foam. Further disclosed is a fabricated foam article.

Extruded, open-cell microcellular alkenyl aromatic polymer forms,

Extruded, open-cell microcellular alkenyl aromatic polymer foams,

Disclosed is an evacuated and unevacuated microcellular foam containing an infrared attenuating agent (IAA). The evacuated foam has an average cell size of about 70 micrometers or less. The unevacuated foam has an average cell size of 1.0 micrometers or less. The IAA provide a greater proportional reduction in foam thermal conductivity in these foams than in foams of larger cell size. Further disclosed is a method of using the foams.

Microcellular foams containing an infrared attenuating agent and a

Non-linear styrenic polymer-based foams

Extruded, open-cell foam and process for making

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Granville, OH, United States of America

Kyung W Suh