The Dow Chemical Company

Dow Global Technolgoies LLC

James E Pate, Iii

Christian Piechocki

Stephen F Hahn

Richard Allen Lundgard

Robert J Donald

James J Jakubowski

Nanette E Lutenske

Rajen M Patel

Jerry E White

Michael N Mang

Robert A Kirchhoff

Dale C Schmidt

Gary D Parsons

Ralph D Priester, Jr

Ronald R Pelletier

Calvin P Esneault

Jerry L Hahnfeld

James Peters

Wayne R Willkomm

Peter T Keillor, Iii

Laura M Phipps

Ira Thumma

Werner A Lidy

Peter Thompson Iii Keillor

Flexible hydrogenated block copolymers can be successfully used in a variety of applications including films, profiles, sheets, coatings, injection molded articles, blow or rotational molded articles and pultruded articles.

Compositions comprising hydrogenated block copolymers and end-use applications thereof

Compositions comprising hydrogenated block copolymers can be successfully used in a variety of applications including films, profiles, sheets, pultruded articles, fibers, coated articles, injection molded articles and blow or rotational molded articles.

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.

Dispersion of a preformed polymer in a polyol

Stable aqueous dispersions or emulsions can be prepared by merging into a mechanical disperser a stream of a molten or liquid disperse phase with a stream of a molten or liquid continuous phase to form a dispersion or emulsion. The molten or liquid disperse phase stream contains a polymer that is preferably a solid at room temperature, but molten at some advanced temperature. The polymer is formed in a molten state or formed and melted by a continuous reaction process such as an extrusion process, including melt extrusion or compound extrusion. It has been discovered that low polydisperse submicron sized dispersion can be prepared by the method of the present invention.

Continuous process of extruding and mechanically dispersing a polymeric resin in an aqueous or non-aqueous medium

An epoxy resin containing a low temperature nonionic surfactant having a molecular weight of less than 7,000 Daltons, a high temperature nonionic surfactant having a molecular weight of greater than 7,000 Daltons, and an anionic surfactant, can be used to prepare an aqueous dispersion of the epoxy resin that has unusually low particle size and unusually long shelf-stability. The dispersion is preferably prepared by way of a high internal phase ratio emulsion.

Epoxy resins and stable aqueous dispersions thereof

The present invention is a composition comprising either: a) a high internal phase ratio emulsion having water as a continuous phase and a thermoplastic hydroxy-functional polyether as a disperse phase; or b) a stable aqueous dispersion of the thermoplastic hydroxy-functional polyether. The composition of the present invention addresses a need in the art by providing a thermoplastic coating that exhibits an excellent barrier to oxygen and carbon dioxide, but which barrier properties are not adversely affected by contact with water. The composition is particularly useful in the paper packaging industry where biodegradability and resistance to spoilage of food is desirable.

High internal phase ratio emulsions and stable aqueous dispersions of

A polyurethane/urea/thiourea latex having a narrow molecular weight polydispersity and sub-micron particle size can be prepared by first preparing a high internal phase ratio (HIPR) emulsion of a polyurethane/urea/thiourea prepolymer, then contacting the emulsion with a chain-extending reagent under such conditions to form the polymer latex.

Continuous process for preparing a polyurethane latex

The present invention is a method of preparing a high internal phase ratio emulsion without phase inversion comprising the steps of:

Process for preparing high internal phase ratio emulsions and latexes

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Sanford, MI, United States of America

James E Pate, Iii