Multi-layer polyisophthalate and polyterephthalate articles and

Details Multi-layer polyisophthalate and polyterephthalate articles and Multi-layer polyisophthalate and polyterephthalate articles and

1985-04-01

1987-02-17

Bleutge, John C.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428213, 428480, 525444, B65D 614

Patent

active

046439250

ABSTRACT:
Polyester articles, particularly bottles and cans, which have good oxygen and carbon dioxide permeability resistance are very useful for packaging foods and beverages. This invention discloses multi-layer articles which have excellent oxygen and carbon dioxide permeability resistance. These multi-layer articles have at least one layer which is made from a polyisophthalate, a polyisophthalate copolymer, a melt blend of polyethylene isophthalate with polyethylene terephthalate, or a high molecular weight polyester resin which is prepared by solid state polymerizing a polyethylene isophthalate prepolymer and a polyethylene terephthalate prepolymer simultaneously together. Such multi-layer articles also have at least one layer which is made from a polyterephthalate compound or a copolymer thereof.

REFERENCES:
patent: 3651172 (1972-03-01), Barkey
patent: 4069278 (1978-01-01), Borman
patent: 4110315 (1978-08-01), Go
patent: 4234708 (1980-11-01), Edelman
patent: 4255516 (1981-03-01), Katoh
patent: 4364896 (1982-12-01), Kontz
patent: 4373002 (1983-02-01), Petersen Hoj
patent: 4482586 (1984-11-01), Smith
patent: 4551368 (1985-11-01), Smith

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