US4485204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester blends comprising a desiccant and a rubbery block copolymer
Assignee: Phillips Petroleum Co
•
Filing: 1981-08-26
•
Granted: 1984-11-27
•
Expires: 2001-08-26
Abstract
Abstract Blends of a polyester with a desiccant and one or more of a poly(mono-1-olefin); a rubbery diene/monovinylarene block copolymer; or a poly(mono-1-olefin) and a rubbery block copolymer, optionally with a resinous poly(monovinylarene). Any of these blends can further employ an oil as an additional component.
Inventors
- 👤 Lester G. Nabors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:34
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: 25
Claim 1
Independent Claim
51 words
The polyester composition consisting essentially of (a) about 50 to 90 weight percent polyalkylene terephthalate polyester, (b) rubbery block copolymer, and (c) desiccant, wherein said desiccant is selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; optionally further with (f) light mineral oil.
Claim 2
Dependent Claim
51 words
The polyester composition consisting essentially of (a) about 50 to 90 weight percent polyalkylene terephthalate polyester, (b) rubbery block copolymer, and (c) desiccant, wherein said desiccant is selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; optionally further with (f) light mineral oil.
Claim 3
Dependent Claim
53 words
The polyester composition consisting essentially of (a) about 50 to 90 weight percent polyalkylene terephthalate polyester, (b) rubbery block copolymer, (c) desiccant, wherein said desiccant is selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; and (d) poly(mono-1-olefin); optionally further with (f) light mineral oil.
Claim 4
Dependent Claim
53 words
The polyester composition consisting essentially of (a) about 50 to 90 weight percent polyalkylene terephthalate polyester, (b) rubbery block copolymer, (c) desiccant, wherein said desiccant is selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; and (d) poly(mono-1-olefin); optionally further with (f) light mineral oil.
Claim 5
Dependent Claim
55 words
The polyester composition consisting essentially of (a) about 25 to 75 weight percent polyalkylene terephthalate polyester, (b) rubbery block copolymer (c) desiccant, wherein said desiccant is selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; (d) poly(mono-1-olefin), and (e) poly(monovinylarene); optionally further with (f) light mineral oil.
Claim 6
Dependent Claim
55 words
The polyester composition consisting essentially of (a) about 25 to 75 weight percent polyalkylene terephthalate polyester, (b) rubbery block copolymer (c) desiccant, wherein said desiccant is selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; (d) poly(mono-1-olefin), and (e) poly(monovinylarene); optionally further with (f) light mineral oil.
Claim 7
Dependent Claim
16 words
The composition according to claim 1, 2, or 3 further including said (f) light mineral oil.
Claim 8
Dependent Claim
31 words
The composition of claim 1 employing about 5 to 40 weight percent (b), and about 3 to 20 weight percent (c); and where present about 0.5 to 5 weight percent (f).
Claim 9
Dependent Claim
30 words
The composition of claim 5 employing about 70-85 weight percent (a), about 10-20 weight percent (b), and about 5-10 weight percent (c); and where present about 1-2 weight percent (f).
Claim 10
Dependent Claim
39 words
The composition of claim 2 employing (a), about 3 to 30 weight percent (b), about 3 to 20 weight percent (c), and about 3 to 25 weight percent (d); and where present about 0.5 to 5 weight percent (f).
Claim 11
Dependent Claim
44 words
The composition of claim 7 employing about 60 to 80 weight percent (a), about 10 to 20 weight percent (b), about 5 to 10 weight percent (c), and about 5 to 10 percent (d); and where present about 1 to 2 weight percent (f).
Claim 12
Dependent Claim
46 words
The composition of claim 3 employing (a), about 3 to 30 weight percent (b), about 3 to 30 weight percent (c), about 10 to 35 weight percent (d), and about 3 to 30 weight percent (e); and where included about 0.5 to 5 weight percent (f).
Claim 13
Dependent Claim
52 words
The composition of claim 9 employing about 35 to 50 weight percent (a), about 10 to 20 weight percent (b), about 10 to 20 weight percent (c), about 20 to 25 weight percent (d), and about 5 to 10 weight percent (e); and where employed about 1 to 2 weight percent (f).
Claim 14
Dependent Claim
28 words
The composition of claim 1, 2, 3, 5, 6, 7, 8, 9, or 10 wherein said (a) is polyethylene terephthalate, and said (c) desiccant is a calcium oxide.
Claim 15
Dependent Claim
34 words
The composition of claim 1, 2, 3, 5, 6, 7, 8, 9, or 10, wherein said (b) is a butadiene/styrene block copolymer, said (a) is polyethylene terephthalate, and said (c) is a calcium oxide.
Claim 16
Dependent Claim
29 words
The composition of claim 2, 3, 7, 8, 9, or 10, wherein said (a) is polyethylene terephthalate, said (d) is a polyethylene, and said (c) is a calcium oxide.
Claim 17
Dependent Claim
36 words
The composition of claim 2, 3, 7, 8, 9, or 10 wherein said (a) is polyethylene terephthalate, said (b) is a butadiene/styrene block copolymer, said (d) is a polyethylene, and said (c) is a calcium oxide.
Claim 18
Dependent Claim
39 words
The composition of claim 3, 9, or 10, wherein said (a) is a polyethylene terephthalate, said (b) is a butadiene/styrene block copolymer, said (c) is a calcium oxide, said (d) is a polyethylene, and said (e) is a polystyrene.
Claim 19
Dependent Claim
21 words
The composition of any of claims 5, 6, 7, 8, 9, or 10, wherein said (a) is a PET bottle regrind.
Claim 20
Dependent Claim
74 words
A polyester blend composition consisting of: (a) about 50 to 90 weight percent polyalkylene terephthalate, (b) about 5 to 40 weight percent rubbery block copolymer of a hydrocarbon conjugated diene with a monovinylarene, and (c) about 3 to 20 weight percent of a desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; and optionally (f) about 0.5 to 5 weight percent of light mineral oil.
Claim 21
Dependent Claim
74 words
A polyester blend composition consisting of: (a) about 50 to 90 weight percent polyalkylene terephthalate, (b) about 5 to 40 weight percent rubbery block copolymer of a hydrocarbon conjugated diene with a monovinylarene, and (c) about 3 to 20 weight percent of a desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide; and optionally (f) about 0.5 to 5 weight percent of light mineral oil.
Claim 22
Dependent Claim
86 words
A polyester blend composition consisting of: (a) about 50 to 90 weight percent polyalkylene terephthalate, (b) about 3 to 30 weight percent of a rubbery block copolymer of a hydrocarbon conjugated diene with a monovinylarene, (c) about 3 to 20 weight percent of a desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, and (d) about 3 to 25 weight percent of a poly(mono-1-olefin); and optionally (f) about 0.5 to 5 weight percent of light mineral oil.
Claim 23
Dependent Claim
86 words
A polyester blend composition consisting of: (a) about 50 to 90 weight percent polyalkylene terephthalate, (b) about 3 to 30 weight percent of a rubbery block copolymer of a hydrocarbon conjugated diene with a monovinylarene, (c) about 3 to 20 weight percent of a desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, and (d) about 3 to 25 weight percent of a poly(mono-1-olefin); and optionally (f) about 0.5 to 5 weight percent of light mineral oil.
Claim 24
Dependent Claim
94 words
A polyester blend composition consisting of: (a) about 25 to 75 weight percent polyalkylene terephthalate, (b) about 3 to 30 weight percent of a rubbery block copolymer of a hydrocarbon conjugated diene with a monovinylarene, (c) about 3 to 20 weight percent desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, (d) about 10 to 35 weight percent of a poly(mono-1-olefin), and (e) about 3 to 20 weight percent of a polymonovinylarene; and optionally (f) about 0.5 to 5 weight percent of light mineral oil.
Claim 25
Dependent Claim
94 words
A polyester blend composition consisting of: (a) about 25 to 75 weight percent polyalkylene terephthalate, (b) about 3 to 30 weight percent of a rubbery block copolymer of a hydrocarbon conjugated diene with a monovinylarene, (c) about 3 to 20 weight percent desiccant selected from the group consisting of calcium oxide, magnesium oxide, strontium oxide, barium oxide, and aluminum oxide, (d) about 10 to 35 weight percent of a poly(mono-1-olefin), and (e) about 3 to 20 weight percent of a polymonovinylarene; and optionally (f) about 0.5 to 5 weight percent of light mineral oil.
References Cited (Backward Citations)
US2863849A
Cited
US3423265A
Cited
US3492264A
Cited
US3594450A
Cited
US3810863A
Cited
US4081397A
Cited
US3659896A
Cited
US3637911A
Cited
US3907931A
Cited
US3835088A
Cited
US3969313A
Cited
US4080354A
Cited
JPS49102768A
Cited
US4033907A
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
US4327199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |