Shell Oil Comapny

Michael A Masse

James R Erickson

Steven H Dillman

Robert Charles Bening

David Romme Hansen

Paul A Mancinelli

Dale Lee Handlin, Jr

Steven S Chin

Kailash C Dangayach

Esther M Zimmermann

David J St Clair

Ronald J Hoxmeier

Bridget A Spence

Craig A Stevens

James H Collins

Daniel B England

A process for curing epoxidized diene polymers for use in adhesives, sealants, and coatings which comprises contacting the polymer with an aromatic anhydride curing agent at an epoxy/anhydride molar ratio from 0.5/1 to 2.0/1.0, optionally, and from 0.1 to 10 phr of an accelerator at a temperature of from 100 to for a period of 10 minutes to six hours.

Chemical curing of epoxidized diene polymers using aromatic anhydride

In a process of curing epoxidized polymers of conjugated dienes which contain aromatic moieties by exposing the polymers to ultraviolet radiation in the presence of a photoinitiator, the improvement which comprises reducing the amount of irradiation necessary to achieve an effective cure by adding a small but effective amount of a photosensitizer which absorbs UV radiation in a wavelength range which is not obscured by the polymer to the polymer prior to or during irradiation.

Process for radiation cured conjugated diene-vinyl aromatic hydrocarbon

The present invention is polyurethane compositions comprising from 1 to 80% by weight of a polydiene diol having from 1.6 to 2, more preferably 1.8 to 2, and most preferably 1.9 to 2, terminal hydroxyl groups per molecule and a number average molecular weight between 500 and 20,000, more preferably between 1,000 and 10,000, from 20 to 99% by weight of a hard segment comprised of an isocyanate having two isocyanates groups per molecule and dimer diol as a chain extender. The polyurethane compositions described herein are stronger than other polydiene diol-based polyurethane compositions.

Polyurethanes made with polydiene diols, diisocyanates, and dimer diol

A process for curing and foaming epoxidized diene polymers which comprises contacting the polymer with a nonaromatic anhydride curing agent at an epoxy/anhydride molar ratio from 0.6 to 1.4 and from 2 to 10 phr of an accelerator at a temperature of from 100.degree. to 200.degree. C. for a period of 10 minutes to six hours.

Process for making cured foamed articles from epoxidized diene polymers

A process for curing epoxidized diene polymers for use in adhesives, sealants, and coatings which comprises contacting the polymer with an aromatic anhydride curing agent at an epoxy/anhydride molar ratio from 0.5/1 to 2.0/1.0, optionally, and from 0.1 to 10 phr of an accelerator at a temperature of from 100.degree. to 200.degree. C. for a period of 10 minutes to six hours.

Chemical curing of expoxidized diene polymers using aromatic anhydride

A process for incorporation of epoxidized polydienes into aromatic epoxy resins which comprises (a) blending the epoxidized polydiene into a curing agent in a ratio of 1:20 to 1:4, (b) reacting the epoxidized polydiene and a curing agent at a temperature of from 100.degree. to 150.degree. C. over a time from 10 to 100 minutes, (c) mixing the pre-reacted epoxidized polydiene and curing agent with the aromatic epoxy resin and accelerator, and (d) curing the aromatic epoxy resin by heating the full mixture of paragraph (c) to a temperature of from 110.degree. to 170.degree. C. for from 2 to 6 hours.

Process for incorporation of expoxidized polydienes into epoxy resins

A laminating adhesive comprising an adhesive composition which comprises

Solvent-free laminating adhesive composition

The invention is a radiation curable printing ink composition comprising a liquid viscous epoxidized diene polymer and a pigment. Preferred diene polymers are block copolymers comprising at least interior and exterior diene blocks wherein the exterior diene blocks contain a greater concentration of di-, tri-, and tetrasubstituted olefinic epoxides than the interior blocks and wherein the copolymer contains from 0.1 to 3.0 Meq of olefinic epoxides per gram of copolymer and the peak molecular weights as determined by gel permeation chromatography of the exterior blocks of from 300 to 2000 and the peak molecular weights as determined by gel permeation chromatography of the interior blocks are from 2,000 to 10,000. In another preferred embodiment, the polymer is a star polymer having a random distribution of from 0.5 to 5 Meq of di-, tri-, and tetrasubstituted olefinic epoxides per gram of polymer and greater than four arms wherein the peak molecular weights as determined by gel permeation chromatography of the arms are from 1500 to 15,000.

Radiation curable printing ink composition

The present invention provides a toughened epoxy resin composition comprising: (a) a curable aromatic epoxy resin, (b) an epoxidized low viscosity polydiene polymer wherein the polymer contains from 1.0 to 7.0 milliequivalents of epoxy per gram of polymer, and (c) a curing agent.

Composition of epoxy resin, epoxidized block polydiene and curing agent

The present invention provides a toughened epoxy resin composition comprising:

Epoxidized monohydroxylated block polymer, epoxy resin, curing agent and

A process is disclosed for producing six-armed and eight-armed asymmetric radial block copolymers. The process comprises anionically polymerizing a diene and/or a vinyl aromatic hydrocarbon to create living polydiene and/or vinyl aromatic hydrocarbon arms, sequentially anionically polymerizing a vinyl aromatic hydrocarbon and a diene to create living block copolymer arms and coupling the two sets of arms together in one step with a coupling agent that will couple six or eight arms, wherein the molar ratio of the vinyl aromatic hydrocarbon-diene arms to the polydiene arms is sufficient to produce a statistical blend with less than 5 weight percent homopolydiene.

Method for producing statistically coupled asymmetric radial polymers

A laminating adhesive comprising an adhesive composition which comprises (a) An epoxidized block copolymer of the formula

Solvent-free laminating adhesive composition from epoxidized block

A process for preparing a coupled asymmetric block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene which comprises: (a) adding sufficient anionic polymerization initiator to the vinyl aromatic hydrocarbon monomer to start polymerization of the vinyl aromatic hydrocarbon, (b) polymerizing the vinyl aromatic hydrocarbon for a time sufficient to form a first set of vinyl aromatic hydrocarbon blocks having a desired molecular weight, (c) adding sufficient anionic polymerization initiator to start polymerization of a second set of vinyl aromatic hydrocarbon blocks, (d) completing the polymerization of the vinyl aromatic hydrocarbon for a time such that the first set of vinyl aromatic hydrocarbon blocks continues to grow to the desired molecular weight and the second set of vinyl aromatic hydrocarbon blocks grows to a desired smaller molecular weight, (e) adding a conjugated diene and polymerizing it on the ends of the vinyl aromatic hydrocarbon blocks for a time sufficient to form vinyl aromatic hydrocarbon-conjugated diene arms of the desired molecular weight, and (f) adding a coupling agent and coupling the arms to form the asymmetric block copolymer.

Method for producing coupled asymmetric polymers

This invention provides a reactive conjugated diene polymer composition that forms a phase-separated adhesive, sealant, or coating. The composition comprises an epoxidized polymer of conjugated dienes, a second reactive component which is phase separated from the polymerized conjugated diene upon cure, and optionally a tackifying resin. The invention also encompasses adhesive, coating and sealant compositions made with the above composition.

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Richmond, TX, United States of America

Michael A Masse