The Dow Chemical Company

Dow Global Technolgoies LLC

Larry W Mobley

James K Jennings

Robert B Turner

Randall C Jenkines

John L Nafziger

Kenneth W Skaggs

Mark A Snyder

Vivian R Hofmeister

Debkumar Bhattacharjee

Ralph D Priester, Jr

Weijun Zhou

Stefan Ultsch

Laura A Grier

Paul L Neill

Barbara Bonavoglia

Don H Kelley

Ramki Subramanian

Roger Moore

Peter Heydasch

A synthetic leather is made by a impregnating a non-woven or woven textile with an aqueous polyurethane dispersion comprised of a nonionizable polyurethane and an external stabilizing surfactant. The impregnated textile is then exposed to water containing a coagulant for a coagulation time sufficient to coagulate the dispersion. The method may be used to form a synthetic leather having excellent wet ply adhesion and may contain an insoluble multivalent cation organic acid.

Process to make synthetic leather and synthetic leather made therefrom

The present invention is a continuous process for preparing formulations useful for making filled polymer carpet backings. The present invention particularly incorporates polyisocyanate as a reactive diluent in a continuous process for preparing filled polyurethane polymers. Use of the present invention allows production of carpet backings that incorporate high loadings of filler materials.

Preparation of filled reactive polyurethane carpet backing formulations

Polyurethane foam backed textiles, particularly polyurethane backed carpets can be prepared using a formulation including a dialkyltin sulfide catalyst. Use of the dialkyltin sulfide catalyst allows for a delayed gellation without substantially increasing the time from gellation to cure. The delay in gellation provides for improved handling and backing quality.

Catalyst for polyurethane carpet backings and carpets prepared therewith

Novel catalyst compositions comprising complexes of tin(IV) salts and amine compounds are used to prepare polyurethanes, polyureas, polycarbodiimides and polyisocyanurates. The complexes, which preferably employ primary amines, allow delay of gelation until they dissociate under certain reaction conditions. The complexes can be prepared neat or in situ in an active hydrogen containing formulation component. The complexes serve to delay gelation of the formulation because they can be prepared to be relatively stable to moisture and will predictably dissociate upon heating, either as a result of the exothermic nature of the reaction being catalyzed or with application of an external heat source. The catalyst compositions are particularly useful for preparation of carpet underlay and in other applications requiring significant delay prior to gelation.

Process for preparation of polyurethanes utilizing novel catalysts

A polyurethane adhesive is prepared from a reaction mixture containing small amounts of chain extender material and a high equivalent weight of a polyol and a monoalcohol. An article adhered to a substrate using this adhesive is firmly affixed to the substrate, yet can be removed without leaving residual adhesive on the substrate. In addition, this adhesive can be washed and reused if desired.

Removable polyurethane adhesive

This invention is an active hydrogen-containing composition comprising a relatively high equivalent weight active hydrogen-containing material and an inert, particulate filler which is stabilized with a stabilizer composition comprising

Stabilizers for filled polyol compositions

This invention is a polyurethane composition useful for backing textiles comprising the catalyzed reaction product of a polyurethane-forming composition which comprises:

Process for preparing polyurethane-backed textiles

Flexible polyurethane foams having improved flame resistance and 'guide factor' are prepared by reacting a copolymer polyahl, isocyanate-terminated prepolymer containing a cotrimer of MDI and a blowing agent.

Flexible polyurethane foams prepared from cotrimers of alkylene-bridged

Trimerized isocyanates having improved solubility in polyisocyanates are prepared by reacting a polyisocyanate with a low equivalent weight polyol to form a first prepolymer, forming a cotrimer from said first prepolymer by reaction of same with diphenylmethane diisocyanate or polymeric derivatives thereof, and forming a second isocyanate terminated prepolymer by reacting said cotrimer with a second low equivalent weight polyol. The resulting cotrimer can be diluted in a polyisocyanate and used to prepare polymers, particularly polyurethane foams, having excellent properties.

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Cohutta, GA, United States of America

Larry W Mobley