Patent US4547536A successfully refreshed from Google Patents.
US4547536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester blends containing a metal oxide desiccant
Assignee: Phillips Petroleum Co
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Filing: 1984-07-30
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Granted: 1985-10-15
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Expires: 2004-07-30
Abstract
Abstract Blends of a polyester with a desiccant and a poly(mono-1-olefin); optionally with an oil.
Inventors
- 👤 Lester G. Nabors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:31
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L67/00; C08L67/02; C08J2367/00; C08J2367/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
80 words
A composition consisting essentially of about 50 to 90 weight percent of at least one polyalkylene terephthalate polyester resin, about 3 to 20 weight percent of at least one desiccant, and about 3 to 20 weight percent of at least one normally solid poly(1-alkene); and optionally further about 0.5 to 5 weight percent of a light mineral oil; wherein said desiccant is at least one of the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, aluminum oxide.
Claim 2
Dependent Claim
80 words
A composition consisting essentially of about 50 to 90 weight percent of at least one polyalkylene terephthalate polyester resin, about 3 to 20 weight percent of at least one desiccant, and about 3 to 20 weight percent of at least one normally solid poly(1-alkene); and optionally further about 0.5 to 5 weight percent of a light mineral oil; wherein said desiccant is at least one of the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, aluminum oxide.
Claim 3
Dependent Claim
11 words
The composition according to claim 1 including said light mineral oil.
Claim 4
Dependent Claim
47 words
The composition of claim 2 employing about 80 to 90 weight percent said polyalkylene terephthalate polyester resin, about 5 to 10 weight percent said desiccant, and about 5 to 10 weight percent said poly(1-alkene); and where present about 1 to 2 weight percent said light mineral oil.
Claim 5
Dependent Claim
12 words
The composition of claim 1 wherein said desiccant is a calcium oxide.
Claim 6
Dependent Claim
27 words
The composition of claim 1 wherein said polyalkylene terephthalate polyester resin is a polyethylene terephthalate, said desiccant is a calcium oxide, and said poly(1-alkene) is a polyethylene.
Claim 7
Dependent Claim
14 words
The composition of claim 5 wherein said polyethylene terephthalate is a PET bottle regrind.
Claim 8
Dependent Claim
17 words
The composition of claim 1 consisting of said polyalkylene terephthalate polyester resin, said desiccant, and said poly(1-alkene).
Claim 9
Dependent Claim
78 words
A polyester blend composition consisting essentially of effective proportions of: about 50 to 90 weight percent of a polyalkylene terephthalate polyester resin, about 3 to 20 weight percent of a desiccant, about 3 to 20 weight percent of a normally solid poly(1-alkene), and about 0.5 to 5 weight percent a light mineral oil; wherein said desiccant is selected from at least one of the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide.
Claim 10
Dependent Claim
78 words
A polyester blend composition consisting essentially of effective proportions of: about 50 to 90 weight percent of a polyalkylene terephthalate polyester resin, about 3 to 20 weight percent of a desiccant, about 3 to 20 weight percent of a normally solid poly(1-alkene), and about 0.5 to 5 weight percent a light mineral oil; wherein said desiccant is selected from at least one of the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide.
Claim 11
Dependent Claim
16 words
The composition according to claim 8 wherein said polyalkylene terephthalate polyester resin is a polyethylene terephthalate.
Claim 12
Dependent Claim
18 words
The composition of claim 8 wherein said desiccant is a calcium oxide, and said poly(1-alkene) is a polyethylene.
Claim 13
Dependent Claim
43 words
The composition of claim 9 employing about 80 to 90 weight percent said polyethylene terephthalate, about 5 to 10 weight percent said desiccant, and about 5 to 10 weight percent said poly(1-alkene), and about 1 to 2 weight percent said light mineral oil.
Claim 14
Dependent Claim
17 words
The composition of claim 11 wherein said desiccant is a calcium oxide, and said poly(1-alkene) is polyethylene.
Claim 15
Dependent Claim
65 words
A polyester blend composition consisting of: about 50 to 90 weight percent polyalkylene terephthalate resin, about 3 to 20 weight percent of at least one desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, and about 3 to 25 weight percent of a poly(α-olefin); and optionally about 0.5 to 5 weight percent of light mineral oil.
Claim 16
Dependent Claim
65 words
A polyester blend composition consisting of: about 50 to 90 weight percent polyalkylene terephthalate resin, about 3 to 20 weight percent of at least one desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, and about 3 to 25 weight percent of a poly(α-olefin); and optionally about 0.5 to 5 weight percent of light mineral oil.
Claim 17
Dependent Claim
61 words
A polyester blend composition consisting of: about 50 to 90 weight percent polyethylene terephthalate resin, about 3 to 20 weight percent of at least one desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, about 3 to 20 weight percent poly(α-olefin); and about 0.5 to 5 weight percent of light mineral oil.
Claim 18
Dependent Claim
61 words
A polyester blend composition consisting of: about 50 to 90 weight percent polyethylene terephthalate resin, about 3 to 20 weight percent of at least one desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, about 3 to 20 weight percent poly(α-olefin); and about 0.5 to 5 weight percent of light mineral oil.
References Cited (Backward Citations)
US2863849A
Cited
US3423265A
Cited
US3492264A
Cited
US3562200A
Cited
US3594450A
Cited
US3810863A
Cited
US4081397A
Cited
US3659896A
Cited
US3637911A
Cited
US3907931A
Cited
US3835088A
Cited
US3769260A
Cited
US3969313A
Cited
US4080354A
Cited
US4048128A
Cited
US4033907A
Cited
US4154774A
Cited
US4188316A
Cited
US4101605A
Cited
US4222926A
Cited
US4197377A
Cited
US4081496A
Cited
US4185047A
Cited
US4173597A
Cited
US4158654A
Cited
US4193908A
Cited
US4243579A
Cited
US4220735A
Cited
US4234636A
Cited
GB2039918A
Cited
US4271064A
Cited
US4219628A
Cited
US4284540A
Cited
US4267286A
Cited
US4271065A
Cited
US4327199A
Cited
JPS59102768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |