Chevron Phillips Chemical Company LP

Chevron Chemical Company LLC

Henkel Research Corporation

Cryovac, Inc.

Chevron Research Company

Phillips Petroleum Company

Ta Yen Ching

Hu Yang

Gangfeng Cai

Leslie P Theard

Kiyoshi Katsumoto

Joseph L Goodrich

Victor P Kurkov

Lewis R Compton

David Rosendale

Tor H Palmgren

Mitchell P Eichelberger

James Hongxue Wang

Brad D Rodgers

Richard P Schmidt

James P Leonard

Steven P Current

Gary D Jerdee

Jeffery C Gee

Lennard F Torres

Lon-Tang W Lin

Ruthann M Hickox

Drew V Speer

Shigeto Suzuki

Robert Bacskai

Bert Gruber

Ta-Wang Lai

Albert H Schroeder

James A Solis

Kevin Cai

Peter Kwan

Mark Steven Galland

James E Wang

Raymond Laplante

Kenneth W Russell

Lon T Lin

Steven Woodcock

Edgar Koeppelman

Richard M Chan

Gang Feng Cai

A process for selectively making 2-alkenes from a NAO using a mesoporous catalyst that has been surface modified with a Br&#xf6;nsted acid compound. The Br&#xf6;nsted acid compound has a reactive silane connector, an organic linking group, and a Br&#xf6;nsted acid group. The mesoporous catalyst has an average pore diameter in a range of about 12 to about 100 Angstroms and a surface area of between about 400 to about 1400 m/gram.

Selective isomerization of olefins to alkenes using a mesoporous catalyst

Oxygen scavenging materials incorporated into or attached to a package such as a gable-top or rectangular carton, used to package foods, beverages or other oxygen sensitive materials, and thereby increase shelf-life by decreasing oxygen in the headspace of the package, and decreasing oxidation of the packaged product.

Oxygen scavenging packaging

Herein is disclosed a modified ethylene vinyl alcohol polymer (EVOH) comprising an oxygen scavenging functional group. Preferably, the modified EVOH comprises structures IV, V, and VI:  wherein x is an integer greater than or equal to 1, y is an integer greater than or equal to 1, z is an integer greater than or equal to 1, and R comprises a cycloalkenyl group. The modified EVOH is useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article. Also disclosed are methods of modifying ethylene vinyl alcohol polymers, and using the modified EVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.

Enhanced oxygen barrier performance from modification of ethylene vinyl alcohol copolymers (EVOH)

Herein is disclosed an oxygen barrier composition comprising an oxygen barrier polymer and an oxygen scavenging polymer. Preferably, the oxygen barrier polymer is selected from polymers or copolymers of vinyl alcohol, polyesters, polymers or copolymers of vinylidene dichloride, polymers or copolymers of epoxies, polysulfones, polymers or copolymers of acrylonitrile, polymers or copolymers of isocyanates, or polyamides other than MXD6; and the oxygen scavenging polymer either comprises an ethylenic backbone and a cyclic olefinic pendant group of structure I, or a polyester group of structure II or structure III: wherein q, q, q, q, and r are independently selected from hydrogen, methyl, or ethyl; m is &#x2014;(CH)&#x2014;, wherein n is an integer from 0 to 4, inclusive; X is null or a linking group; and, when r is hydrogen, at least one of q, q, q, and qis also hydrogen. The oxygen barrier composition can be formed into an oxygen barrier layer of a packaging article. Such layers and articles, and methods for making same, are also disclosed.

Compatible blend systems of oxygen barrier polymers and oxygen scavenging polymers

Herein is disclosed an oxygen barrier composition comprising an oxygen barrier polymer and an oxygen scavenging polymer. The composition can be in the form of a physical blend or a cross-linked blend, and can further comprise a compatibilizer, a transesterification catalyst, or both. Preferably, the oxygen barrier polymer is poly(ethylene/vinyl alcohol) (EVOH), polyethylene terephthalate (PET), or polyamide other than MXD6. Preferably, the oxygen scavenging polymer comprises an ethylenic backbone and a pendant cyclic olefinic group, or the oxygen scavenging polymer is a polyamide derived at least in part from a xylene diamine-based monomer. The oxygen barrier composition can be formed into an oxygen barrier layer of a packaging article. Such layers and articles, and methods for making same, are also disclosed.

A family of polymers containing selected cyclic allylic pendent groups for oxygen scavenging packaging which has minimal organoleptic by-products after oxidation.

Polymer with pendent cyclic olefinic functions for oxygen scavenging packaging

Herein is disclosed a modified ethylene vinyl alcohol polymer (EVOH) comprising an oxygen scavenging functional group. Preferably, the modified EVOH comprises structures IV, V, and VI: wherein x is an integer greater than or equal to 1, y is an integer greater than or equal to 1, z is an integer greater than or equal to 1, and R comprises a cycloalkenyl group. The modified EVOH is useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article. Also disclosed are methods of modifying ethylene vinyl alcohol polymers, and using the modified EVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.

Rigid containers are provided comprising oxygen scavenger compositions that produce only low levels of volatiles or by-products as a consequence of oxygen scavenging. In particular, a family of polymers containing selected cyclic olefinic pendent groups are used in the rigid containers to achieve oxygen scavenging that is associated with minimal or no organoleptic by-products after oxidation.

Container having oxygen-scavenging core layer

Disclosed herein are oxygen scavenging compositions and packaging articles that comprise (a) a metal catalyzed oxidizable compound and (b) at least one of a transition metal carboxylate, wherein the transition metal carboxylate comprises at least one carboxylate group and wherein each carboxylate group comprises between 20 and 30 carbon atoms, inclusive, such as cobalt behenate or cobalt arachidate.

Transition metal carboxylates as catalysts for oxygen scavenging

Herein are disclosed modified vinyl alcohol polymers (mPVOH), wherein the mPVOH can comprise structure VII:and at least one structure comprising structure IX:or structure X:wherein &#x2014;R can independently comprise an unsubstituted hydrocarbon moiety comprising at least one alpha hydrogen or a substituted hydrocarbon moiety comprising at least one alpha hydrogen. The mPVOH can be useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article. Also disclosed are methods of forming mPVOH and methods of using mPVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.

Enhanced oxygen barrier performance from modification of vinyl alcohol polymers (PVOH) or ethylene vinyl alcohol copolymers (EVOH)

Herein is disclosed an oxygen scavenging composition, comprising (i) an oxygen scavenging polymer comprising structure I:X&#x2014;R&#x2014;X&#x2014;O&#x2014;CH&#x2014;Ar&#x2014;CH&#x2014;O,&#x2003;&#x2003;(I) wherein &#x2014;R&#x2014; is selected from the group consisting of C&#x2013;Calkyl, C&#x2013;Csubstituted alkyl, C&#x2013;Caryl, and C&#x2013;Csubstituted aryl; &#x2014;Ar&#x2014; is selected from the group consisting of C&#x2013;Caryl and C&#x2013;Csubstituted aryl; and &#x2014;X&#x2014; is selected from the group consisting of null and &#x2014;C(&#x2550;O)&#x2014;; (ii) a transition metal oxidation catalyst; and (iii) an energy-absorbing compound selected from the group consisting of microwave reactive materials and photoinitiators having a wavelength of maximum absorption of electromagnetic radiation from about 200 nm to about 750 nm. The oxygen scavenging composition can be used to form an oxygen barrier packaging article.

Oxygen scavenging compositions comprising polymers derived from benzenedimethanol monomers

Herein is disclosed multilayer packaging articles comprising an oxygen barrier layer comprising ethylene/vinyl alcohol copolymer (EVOH) (an 'EVOH oxygen barrier layer'); an oxygen scavenging layer adjacent thereto, wherein the oxygen scavenging layer comprises a polymer comprising an ethylenic backbone and a cycloalkenyl group having structure I:wherein q, q, q, q, and r are independently selected from hydrogen, methyl, or ethyl; m is &#x2014;(CH)&#x2014;, wherein n is an integer from 0 to 4, inclusive, and, when r is hydrogen, at least one of q, q, q, and qis also hydrogen; and a third layer adjacent to the oxygen scavenging layer. In addition to the oxygen scavenging function, the oxygen scavenging layer functions as a tie layer to substantially inhibit delamination of the EVOH oxygen barrier layer from the third layer of the packaging article.

Oxygen scavenging polymers as active barrier tie layers in multilayered structures

Disclosed is a process for esterifying and/or transesterifying a polymer having a polyethylenic backbone and pendant acid and/or ester moieties comprising contacting a melt of the polymer with a transesterifying compound so that the polymer undergoes esterification and/or transesterification but not alcoholysis. The esterified or transesterified polymer also has pendant ester moieties which differ in kind and/or number from the unreacted polymer. In one embodiment, the process also comprises adding an amount of a transition metal salt that is effective to promote oxygen scavenging. Also in a further embodiment, the process comprises irradiating the transesterified polymer with actinic radiation to reduce the induction period before oxygen scavenging commences. Also disclosed are compositions comprising a component which comprises an ethylenic or polyethylenic backbone and a pendant or terminal moiety comprising a benzylic, allylic, or ether-containing radical. The invention also embodies new polyethylenic oxygen scavenging compositions comprising a transition-metal salt and the above component. Methods of making the compositions, and methods and compositions using the ethylenic or polyethylenic compositions, are disclosed.

COMPOSITIONS HAVING ETHYLENIC BACKBONE AND BENZYLIC, ALLYLIC, OR ETHER-CONTAINING SIDE-CHAINS, OXYGEN SCAVENGING COMPOSITIONS CONTAINING SAME, AND PROCESS FOR MAKING THESE COMPOSITIONS BY ESTERIFICATION OR TRANSESTERIFICATION OF A POLYMER MELT

An oxygen scavenging composition or system is provided comprising an oxygen scavenging material, a photoinitiator, and at least one catalyst effective in catalyzing an oxygen scavenging reaction, wherein the photoinitiator comprises a benzophenone derivative containing at least two benzophenone moieties. A film, a multi-phase composition, a multi-layer composition, a multi-layer film, an article comprising the oxygen scavenging composition, a method for preparing the oxygen scavenging composition, and a method for scavenging oxygen are also provided. Non-extractable benzophenone derivative photoinitiators and methods for preparing same are also provided.

Tribenzoyl compounds

Growing community of inventors

Novato, CA, United States of America

Ta Yen Ching