US4414230A — Plastic container improved in barrier properties …

Claim 1

Independent Claim 76 words

A plastic container made from a thermoplastic resin composition comprising (A) an aromatic polyester carbonate composed of an aromatic dicarboxylic acid moiety, an aromatic dihydroxy compound moiety and a carbonate moiety and (B) at least one member selected from polyalkylene terephthalates and polyalkylene oxybenzoates, in a ratio of 100 parts by weight of (A) to 100 parts by weight or less of (B), said thermoplastic resin composition having improved barrier properties against gases and water vapor.

Claim 2

Dependent Claim 76 words

A plastic container made from a thermoplastic resin composition comprising (A) an aromatic polyester carbonate composed of an aromatic dicarboxylic acid moiety, an aromatic dihydroxy compound moiety and a carbonate moiety and (B) at least one member selected from polyalkylene terephthalates and polyalkylene oxybenzoates, in a ratio of 100 parts by weight of (A) to 100 parts by weight or less of (B), said thermoplastic resin composition having improved barrier properties against gases and water vapor.

Claim 3

Dependent Claim 50 words

A plastic container according to claim 1, wherein the aromatic polyester carbonate is obtained from (a) at least one member selected from aromatic dicarboxylic acids and functional derivatives thereof, (b) at least one member selected from aromatic dihydroxy compounds and functional derivatives thereof and (c) a diaryl carbonate or phosgene.

Claim 4

Dependent Claim 63 words

A plastic container according to claim 2, wherein the component (a), which is at least one member selected from aromatic dicarboxylic acids and functional derivatives thereof, is selected from the group consisting of terephthalic acid, isophthalic acid, methylterephthalic acid, methylisophthalic acid, diphenyl ether dicarboxylic acid, diphenoxy-ethanedicarboxylic acid, a naphthalenedicarboxylic acid, a lower alkyl ester thereof, a phenyl ester thereof, and a halide thereof.

Claim 5

Dependent Claim 51 words

A plastic container according to claim 2, wherein the component (b), which is at least one member selected from aromatic dihydroxy compounds and functional derivatives thereof, is selected from the group consisting of hydroquinone, resorcinol, 4,4'-dihydroxydiphenyl, 2,2-bis(4-hydroxyphenyl) propane (bisphenol-A), 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)ethane, bis(4-hydroxyphenyl)methane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 4,4'-dihydroxydiphenyl sulfone, 1,2-bis(4-hydroxyphenyl)ethane, and an ester-forming derivative thereof.

Claim 6

Dependent Claim 30 words

A plastic container according to claim 2, wherein the diaryl carbonate, i.e. component (c), is selected from the group consisting of diphenyl carbonate, dicresyl carbonate, di-β-naphthyl carbonate, and bis(2-chlorophenyl) carbonate.

Claim 7

Dependent Claim 28 words

A plastic container according to claim 2, wherein the aromatic polyester carbonate is obtained from (a) terephthalic acid or diphenyl terephthalate, (b) 2,2-bis(4-hydroxyphenyl)propane (bisphenol-A), and (c) diphenyl carbonate.

Claim 8

Dependent Claim 17 words

A plastic container according to claim 1, wherein the polyalkylene terephthalate is polyethylene terephthalate or polybutylene terephthalate.

Claim 9

Dependent Claim 17 words

A plastic container according to claim 1, wherein the polyalkylene oxybenzoate is polyethylene oxybenzoate or polybutylene oxybenzoate.

Claim 10

Dependent Claim 82 words

A plastic container made from a thermoplastic resin composition comprising (A) an aromatic polyester carbonate composed of an aromatic dicarboxylic acid moiety, an aromatic dihydroxy compound moiety and a carbonate moiety and (B) at least one member selected from polyalkylene terephthalates and polyalkylene oxybenzoates, in a ratio of 100 parts by weight of (A) to 100 parts by weight or less of (B), said thermoplastic resin composition having improved barrier properties against gases and water vapor, said container containing food or medicine.

Claim 11

Dependent Claim 82 words

A plastic container made from a thermoplastic resin composition comprising (A) an aromatic polyester carbonate composed of an aromatic dicarboxylic acid moiety, an aromatic dihydroxy compound moiety and a carbonate moiety and (B) at least one member selected from polyalkylene terephthalates and polyalkylene oxybenzoates, in a ratio of 100 parts by weight of (A) to 100 parts by weight or less of (B), said thermoplastic resin composition having improved barrier properties against gases and water vapor, said container containing food or medicine.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1986-11-07	1987-05-09	1987-11-08	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1990-11-07	1991-05-09	1991-11-08	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1994-11-07	1995-05-09	1995-11-08	$7700.00	Window Closed / Lapsed

Plastic container improved in barrier properties against gases and water vapor

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag