Bp Corporation North America Inc.

Standard Oil Company (indiana)

Amoco Corporation

Other

Bp Amoco Corporation

Paul J Cahill

George E Rotter

Stephen Chen

Walter M Nyderek

Gary T Brooks

David P Sinclair

Joel Albert Richardson

James M Tibbitt

Raymond T Behrends, Jr

David D Ngo

Edmund J Piasek, Deceased

David C Johnson

Raymond V Wass

John J Greczek

Roman F Barski

Larry C Satek

Charles W Bauer

Matthew A Kulzick

Tsuei-Yun Lynch

John H Udelhofen

Stephen Y Chen

By Evelyn Hunt, Administratrix

Weilong Chiang Chiang

Tamila J Barnes

Carl E Johnson

Donald F Ackerley

By Evelyn Hunt, Administrator

Granville L Smyser

Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.

Oxygen scavenging monolayer bottles

Multilayered plastic bottles are disclosed having oxygen scavenging capacity sufficient to maintain substantially zero or near zero (depending on product requirements) presence of oxygen in the bottle cavity for the planned shelf life of the bottled product under specified storage conditions. The bottles feature a layer comprised of oxygen scavenger copolyester and may be used for bottling beer and other products requiring nearly total absence of oxygen for the duration of the target product shelf life.

Zero oxygen permeation plastic bottle for beer and other applications

Compositions for scavenging oxygen are disclosed. These compositions comprise condensation copolymers comprising predominantly polyester segments and an oxygen scavenging amount of polyolefin oligomer segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt % of polyolefin oligomer segments. The copolycondensates are capable of absorbing at least 0.4 cc of oxygen per gram of copolymer in the solid state at ambient temperatures and are typically used as layers in films, liners, cups, wraps, bottles, etc. Use of these oxygen scavenging compositions in bottles provides a clear and rigid bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolycondensates of this invention are over 99.4 wt % polyester and suitable for recycle with other polyester bottles.

Oxygen scavenging condensation copolymers for bottles and packaging articles

Compositions for scavenging oxygen are disclosed. These compositions comprise copolyamides comprising over 50 weight percent polyamide segments and an active oxygen scavenging amount of polyolefin oligomer segments. The polyamide segments comprise segments derived from typical bottling and packaging polyamides such as polyhexamethyleneadipamide and polyphthalamides. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt. % of polyolefin oligomer segments. The copolyamides provide enhanced active and passive oxygen barrier properties over similar polyester constructions and similar polyamide constructions, when used in a laminar construction. In a series of preferred embodiments, multi-layered bottles fabricated with the oxygen scavenging copolyatnides of this invention are about 99.8 wt. % polyamide and suitable for recycle with other polyamide bottles.

Copolyamide active-passive oxygen barrier resins

Improved active oxygen scavenging packaging articles optionally further comprising SiO and/or EAA coatings are disclosed. Also improved active oxygen scavenging copolycondensates and their use in packaging articles are disclosed. Specifically disclosed are (1) the use of an oxidation moderator or controller (anti-oxidant) along with the copolycondensate scavenger and (2) post polymerization treatment of the copolycondensate substantially in the absence of oxygen. The improvements lead to increased oxygen consumption by the active oxygen scavenger and improved packaging characteristics for the active oxygen scavenging copolycondensates.

Active oxygen scavenger packaging

Active oxygen scavenging compositions and their use in packaging articles are disclosed. The compositions are all plastic materials and are typically deployed as at least one layer in a multi-layered wall of a packaging article such as a bottle, can or film. The compositions are usually used in conjunction with added transition metal catalyst to enhance the uptake of oxygen. Use of the compositions and package constructions disclosed serves to lengthen the shelf life of packaged oxygen sensitive substances and/or diminish the need for refrigeration of the packages.

Active oxygen scavenger compositions and their use in packaging articles

Oxygen scavenging condensation copolymers for bottles and packaging

An optical glass fiber coated with a protective layer of photocurable polyimide coating which can be prepared from the polymeric condensation product of 6FDA, DMDE, and a photosensitizing moiety. More particularly, the present invention relates to a photocurable polyimide coated glass fiber useful for optic applications.

Photocurable polyimide coated glass fiber

An unleaded gasoline in combination with a minor amount of gasoline soluble molybdenum(VI) compound is effective in reducing elevated steady state octane requirement and suppressing octane requirement increase in spark ignition internal combustion engines.

Gasoline compositions containing hexavalent molybdenum

A Mannich condensation reaction of an alkyl phenol, a formaldehyde-yielding reagent, an amine, and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine.

Benzene sulfonic acid catalyzed aromatic Mannich products from alkyl

Benzene sulfonic acid modified aromatic Mannich products from alkyl

N,N-disubstituted organic nitroxides are highly effective ignition improvers for diesel fuels.

Diesel fuel composition

Growing community of inventors

Wheaton, IL, United States of America

Paul J Cahill