Firestone Polymers, LLC

Heritage Research Group

Miles Inc.

Mobay Corporation

Firestone Polymers, LLC & Heritage Research Group

Peter W Boerner

Daniel F Graves

Christine M Rademacher

Timothy P Reece

William L Hergenrother

Herbert L Wissel

Jeffrey F Dormish

Herb Wissel

Randall C Rains

James E Hall

John R Schreffler

Richard W Mitesser

Brent Iceman

A process for producing a styrene-butadiene diblock copolymer-containing blend that is not an agglomeration, that involves mixing a styrene-butadiene multiblock thermoplastic elastomer solution with a styrene-butadiene diblock copolymer solution. Blends comprising a styrene-butadiene diblock copolymer and a styrene-butadiene multiblock thermoplastic elastomer, which blends are not an agglomeration.

Styrene/butadiene diblock copolymer-containing blends that are not an agglomeration and a process for preparation

A modified-asphalt composition prepared by introducing a diene end-capped block copolymer with a molten asphalt composition, where the block copolymer is defined by the formula&#x3b1;-(D-V-d)where each D is independently a polydiene block, each V is independently a vinyl aromatic block, each d is a polydiene end cap, &#x3b1; is a coupling moiety, and x is an integer from 2 to 10.

Polymer-modified asphalt compositions

A modified-asphalt composition prepared by introducing a diene end-capped block copolymer with a molten asphalt composition.

A modified asphalt binder composition prepared by combining asphalt binder, phosphorus pentasulfide, and less than 2.5 parts by weight unsaturated polymer, per 100 parts by weight asphalt binder, to thereby produce a modified asphalt binder composition characterized by an elongation recovery at 25&#xb0; C., as determined according to AASHTO T301, of greater than 75%.

Modified asphalt binders and asphalt paving compositions

A modified asphalt binder composition prepared by combining asphalt binder, phosphorus pentasulfide, and less than 2.5 parts by weight unsaturated polymer, per 100 parts by weight asphalt binder, to thereby produce a modified asphalt binder composition characterized by an elongation recovery at 25&#xb0; C., as determined according to AASHTO T301, of greater than 75%, where the phosphorus pentasulfide includes a blend of PSand PS.

The inventive composition includes a block copolymer which includes four blocks and has the following block arrangement: B-S-B-S. The two polymer blocks B comprise conjugated diene monomer constitutional units; and the two polymer blocks S comprise vinyl aromatic hydrocarbon monomer constitutional units. The invention also includes methods of making such inventive compositions as well as asphalt compositions and/or thermoplastic elastomers which include such block copolymer.

Single step synthesis of functional multi-block polymer

A method for forming a modified asphalt binder composition, the method comprising preparing a phosphorus pentasulfide-binder concentrate by introducing and mixing phosphorus pentasulfide and asphalt binder, where the phosphorus pentasulfide-binder concentrate includes greater than 0.5 parts by weight phosphorus pentasulfide per 100 parts by weight asphalt, preparing a polymer-binder concentrate by introducing and mixing polymer and asphalt binder, where the polymer-binder concentrate includes greater than 5 parts by weight polymer per 100 parts by weight asphalt, and introducing and mixing the phosphorus pentasulfide-binder concentrate with the polymer-binder concentrate to form a modified asphalt binder composition, where the phosphorus pentasulfide includes a blend of PSand PS.

A method for forming a modified asphalt binder composition, the method comprising preparing a phosphorus pentasulfide-binder concentrate by introducing and mixing phosphorus pentasulfide and asphalt binder, where the phosphorus pentasulfide-binder concentrate includes greater than 0.5 parts by weight phosphorus pentasulfide per 100 parts by weight asphalt, preparing a polymer-binder concentrate by introducing and mixing polymer and asphalt binder, where the polymer-binder concentrate includes greater than 5 parts by weight polymer per 100 parts by weight asphalt, and introducing and mixing the phosphorus pentasulfide-binder concentrate with the polymer-binder concentrate to form a modified asphalt binder composition.

A process for preparing a modified asphalt binder composition, the process comprising mixing asphalt, an unsaturated polymer, and phosphorus pentasulfide to form a modified asphalt composition.

This invention relates to a low-viscosity two-component filled polyurethane adhesive comprising

Two-component polyurethane adhesive

The present invention relates to a low-viscosity two-component filled polyurethane adhesive comprising an organic polyisocyanate component and an isocyanate-reactive curative component. The curative component comprises a blend of relatively high equivalent weight isocyanate-reactive component and a relatively low equivalent weight chain extender or crosslinker, as well as certain diamines or triamines to impart sag resistance.

A two component urethane structural adhesive formulation was developed containing a multi-functional aromatic amine terminated polyether as part of the curative component. The adhesive of the present invention is prepared by mixing and reacting the following low viscosity components: Component A, a curative comprising a polyol and an aromatic amine terminated polyether containing two or more primary amine groups and having a molecular weight of from 250 to about 10,000 and Component B, comprising a polyisocyanate. The adhesive of the invention is characterized by its improved sag resistance, its heavy body which is obtained without resort to included fillers or to prepolymerization of the components and by the relatively low viscosity (under about 15,000 cps) of its components which permits easy bulk handling.

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Massillon, OH, United States of America

Peter W Boerner