Bayer Corporation

Miles Inc.

Mobay Corporation

Mobay Chemical Corporation

Bayer Materialscience, LLC

Other

Bayer Aktiengesellschaft

Bayer Polymers LLC

Bayer Corporaton

Peter H Markusch

James W Rosthauser

Ashok M Sarpeshkar

Robert L Cline

Richard S Pantone

Ralf Guether

Robin E Tirpak

Edward P Squiller

Terry A Potter

William E Slack

Karl W Haider

Jeffrey F Dormish

Arthur W Mason

Robson M Mafoti

Charles S Gracik

Peter D Schmitt

Jeffrey A Dodge

George A Hudson, Deceased

Michael C Beatty

Wolfgang D Wenzel

Rick L Adkins

LeRoy Payne

Mark W Witman

Robert P Yeater

Kenneth P Yonek

James Y Chung

Patricia B Jacobs

Stephen D Seneker

Kenneth L Dunlap

Hans-Joachim Kogelnik

Hans Georg Schmelzer

Rick V Starcher

John J Lindsey

Robert G Kelso

Heber D Layton

Norbert J Adam

John W Frink

Joseph Sanders

Tom L Sekelik

Corrine M Gilbert

William Cibulas

William G Crabtree

W Tracy Estabrook

Donald MacNaughtan, Jr

Jack W Hausser

A M Sarpeshkar

Marylyn Donaldson

By Richard White, Administrator

David J Prepelka

Bonnie L Lawson

Clarence D Ferrell

Michael A Joseph

Thomas L Sekelik

James A Thompson

A polyurethane-forming reaction mixture characterized by its ability to be adjusted with respect to its viscosity in response to changing temperature and humidity conditions is achieved with a mixture that includes a liquid polyisocyanate having an isocyanate group content of at least 10% by weight, an isocyanate-reactive component which includes at least one high molecular weight polyol, a urethane catalyst and from 0.2 to 5 parts by weight per 100 parts by weight of isocyanate reactive component of a viscosity adjusting component. The viscosity adjusting component is preferably a diamine, a polyamine and/or an amine-terminated polyol. This reaction mixture is particularly useful for producing polyurethane geotextile composite materials useful as liners for ditches and canals.

Polyurethane-forming composition with adjustable mix viscosity, geotextile composites prepared therefrom and a process for producing such composites

Seams are sealed and surface defects are repaired in a polyurethane/geotextile composite applied over concrete, an earthen canal or a ditch with a non-sagging polyurethane composition. This non-sagging polyurethane composition is a reaction product of a polyisocyanate, a high molecular weight polyhydroxyl compound, and a compound containing at least two amino groups. A low molecular weight diol or triol, a catalyst and a filler are optionally included in the polyurethane-forming reaction mixture.

Process for patching canals and ditches with a non-sagging polyurethane composition

This invention relates to syntactic foams comprising the reaction product of a liquid diphenylmethane diisocyanate component, with an isocyanate-reactive component, a filler having a density of less than 1 g/cm 3, and at least one organo-metallic catalyst. This invention also relates to the use of these syntactic foams for insulating pipes.

Syntactic foams with improved water resistance, long pot life and short demolding times

A water-resistant polyurethane geotextile composite suitable for use as a liner is made by impregnating a geotextile with a water-resistant polyurethane and allowing the polyurethane impregnated in the geotextile to cure. The water-resistant polyurethane composition is a reaction product of (a) a liquid polyisocyanate having an isocyanate content of at least 10% by weight, (b) an isocyanate-reactive component which includes (1) 20-90% by weight castor oil having a water content of less than 0.5% by weight, and (2) a polyether polyol in which at least 70% by weight of the alkylene oxide is propylene oxide, and (c) a urethane catalyst. Low molecular weight diols and triols and fillers may optionally be included.

Polyurethane geotextile composite liner with improved water resistance and a process for the production thereof

This invention relates to fertilizer encapsulation with polyurethanes wherein the isocyanate-reactive composition contains sulfur. The process of the present invention comprises applying a polyisocyanate composition to fertilizer particles, applying an isocyanate-reactive composition which contains sulfur to the polyisocyanate coated fertilizer particles, or applying an isocyanate-reactive composition which contains sulfur to fertilizer particles and then applying a polyisocyanate composition to the isocyanate-reactive coated fertilizer particles, and repeating these steps as necessary to form sulfur containing polyurethane encapsulated fertilizer particles.

Fertilizer encapsulation using sulfur containing polyols

A surface of a canal, ditch or pipe is lined with a polyurethane/geofabric composite. A non-sagging polyurethane composition is applied to the canal, ditch or pipe surface, a geofabric is contacted with that surface in a manner such that the geofabric becomes impregnated with the non-sagging polyurethane composition which cures to form a polyurethane/geofabric composite. The non-sagging polyurethane is a reaction product of a polyisocyanate, a high molecular weight polyhydroxyl compound and a compound having at least 2 amino groups. A low molecular weight diol or triol, filler and catalyst are optional components. These composites are particularly useful in lining cracked or broken concave or angled surfaces.

Process for lining canals, ditches and pipes with a non-sagging polyurethane/geofabric composite

The present invention is directed to a method for impregnating at least one geofabric with a liquid solidifiable polyurethane composition, conforming at least one polyurethane-impregnated geofabric to a surface (such as to the surface of a canal, ditch and/or pipe) and allowing the liquid solidifiable polyurethane composition to cure and form a polyurethane/geofabric composite. The liquid solidifiable polyurethane composition is the reaction product of COMPONENT A, COMPONENT B and COMPONENT C, as defined herein. COMPONENT C has the same equivalent weight as COMPONENT B and contains catalyst. One advantage of the present invention is that the ratio of COMPONENT B to COMPONENT C can be adjusted during processing without changing the isocyanate index. As a result, geltimes of liquid solidifiable polyurethane compositions of the present invention can be adjusted to accommodate changes in outdoor application temperature.

Method for producing a polyurethane/geofabric composite

This invention relates to a process for the production of an optically clear, light-stable polyurethane-urea elastomer having an onset softening point of at least 130&deg; C., processed at ambient temperature and casted in a mold at an isocyanate index of 95 to 120. This process comprises reacting: A) a liquid polyisocyanate or polyisocyanate prepolymer having an NCO group content of about 5 to about 50%, an average functionality of 2 to 3, a viscosity of less than 5,000 mPa.s at 25&deg; C.; and B) an isocyanate-reactive component; in the presence of C) at least one organometallic catalyst. The present invention also relates to the optically clear, light-stable polyurethane-urea elastomers produced by this process.

Light stable one-shot urethane-urea elastomers

This invention relates to novel liquid, polyurethane plasticizers which contain less than 13% by weight, preferably less than 6% by weight of allophanate groups, carbodiimide groups, and/or uretonimine groups, and to a process for the preparation of these liquid polyurethane plasticizers. These comprise the reaction product of at least one organic isocyanate component selected from the group consisting of allophanate modified isocyanates, carbodiimide modified isocyanates, and uretonimine modified isocyanates; with an isocyanate-reactive component which is selected from the group consisting of: (1) one or more isocyanate-reactive compounds having a molecular weight of more than about 1,000, an OH number of about 9 to about 112 and a functionality of about 2 to about 4, and (2) one or more monofunctional alcohols having a molecular weight of about 100 to about 1,000, and an OH number of about 56 to about 560, with the proviso that a stopper comprising a low molecular weight monoalcohol is present when the isocyanate-reactive component only contains (1) one or more isocyanate-reactive compounds having a molecular weight of more than about 1,000, an OH number of about 9 to 112 and a functionality of about 2 to about 4. This invention also relates to a process for the production of a polyurethane comprising reacting a polyisocyanate with an isocyanate-reactive compound in the presence of the liquid, polyurethane plasticizers described herein, and to the resultant polyurethanes containing these plasticizers.

Liquid polyurethane plasticizers containing allophanate and/or carbodiimide and/or uretonimine groups

This invention relates to a process for the preparation of polyurethane encapsulated fertilizer particles. This process comprises applying an isocyanate-reactive component to fertilizer particles, and applying an aliphatic polyisocyanate to fertilizer particles in separate steps to form polyurethane encapsulated fertilizer particles. The two reactants may be applied in either order, with the polyisocyanate being first or last. These two steps may optionally be repeated as many times, as necessary to yield polyurethane encapsulated fertilizer particles which contain from 0.5 to 15% by weight of polyurethane, based on the total weight of the encapsulated fertilizer particles. It is also possible to mix the isocyanate-reactive component and the polyisocyanate together to form a mixture which is then applied to the fertilizer particles. These polyurethane coatings which encapsulates the fertilizer particles are biodegradable.

Process for the production of biodegradable encapsulated fertilizers

This invention relates to liquid polyisocyanate compositions having improved freeze stability. These liquid polyisocyanate compositions have an NCO group content of 15 to 30%, and comprise (A) an allophanate-modified MDI and having an NCO group content of 16 to 32.5%, (B) a low molecular weight branched aliphatic dihydroxy compound, and (C) an epoxide functional compound which is present in an amount of 0.01 to 1% by weight, based on the combined weight of components (A) and (B).

Liquid MDI adducts wtih improved freeze stability

This invention relates to a process for the preparation of one-shot polyurethane cast elastomers containing liquid, diurethane non-migrating plasticizers. This process comprises reacting via the one-shot process an organic diisocyanate, an isocyanate-reactive component, and at least one crosslinking agent in the presence of a liquid, diurethane plasticizer.

Diurethane plasticizer containing one-shot polyurethane cast elastomers

This invention relates to liquid, hydrophobic, non-migrating, non-functional polyurethane plasticizers. These plasticizers comprise the reaction product of an isocyanate-terminated prepolymer and a monofunctional alcohol having a molecular weight of about 32 to about 1,000. The isocyanate-terminated prepolymers comprise the reaction product of a diisocyanate and at least one hydrophobic polyol. The present invention also relates to a process for the production of the liquid, hydrophobic, non-migrating, non-functional polyurethane plasticizers. This invention also relates to a process for the production of a polyurethane product comprising reacting at least one polyisocyanate component with at least one isocyanate-reactive component, in the presence of these liquid, hydrophobic, non-migrating, non-functional polyurethane plasticizers, and to the resultant polyurethane products of this process.

Liquid, hydrophobic, non-migrating, non-functional polyurethane plasticizers

The present invention relates to polyurethane encapsulated fertilizer particles which exhibit slow-release properties and to a process for their production. The process comprises applying an isocyanate-reactive component to fertilizer particles, to form fertilizer particles coated with an isocyanate-reactive component, applying a polyisocyanate component onto the coated fertilizer particles to form polyurethane encapsulated fertilizer particles, and, optionally, repeating these steps as many times as necessary to form the polyurethane encapsulated fertilizer particles that contain about 2 to 20% by weight of polyurethane, based on the total weight of the encapsulated fertilizer particles. Suitable isocyanate-reactive components include polyesterether polyols that comprise either a blend of or the reaction product of (i) castor oil having an OH number of about 160 to about 170, a viscosity of about 500 to about 900 mPa.s at 25&deg; C., and a water content of less than 0.5% by weight; and (ii) a polyether polyol having an OH number of from 28 to 700, a functionality of from 3 to 8, and a molecular weight of about 240 to about 6,000, and a viscosity of from about 50 to 35,000 mPa.s at 25&deg; C. The polyether polyol must be prepared from a suitable initiator compound and an alkylene oxide comprising at least 70% by weight of propylene oxide.

Polyurethane encapsulated fertilizer having improved slow-release properties

Growing community of inventors

McMurray, PA, United States of America

Peter H Markusch