Patent US4355059A successfully refreshed from Google Patents.
US4355059A
Expired / Lapsed
US
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Poly(arylene sulfide) composition containing a polyolefin
Assignee: Phillips Petroleum Co
•
Filing: 1981-04-24
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Granted: 1982-10-19
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Expires: 2001-04-24
Abstract
Abstract Poly(arylene sulfide) coating compositions are described comprising a poly(arylene sulfide) and a polyolefin in an aqueous medium.
Inventors
- 👤 Jennings P. Blackwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:48
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B05D7/24; C; C09; C09D; C09D181/00; C09D181/02; C09D5/00; C09D5/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
43 words
A coating composition comprising a major amount of a curable poly(arylene sulfide) and a minor amount of a polyolefin in an aqueous medium, the polyolefin being present in an amount effective to reduce surface defects in a cured coating of said coating composition.
Claim 2
Dependent Claim
43 words
A coating composition comprising a major amount of a curable poly(arylene sulfide) and a minor amount of a polyolefin in an aqueous medium, the polyolefin being present in an amount effective to reduce surface defects in a cured coating of said coating composition.
Claim 3
Dependent Claim
33 words
The composition of claim 1 in which the polyolefin is present in an amount within the range of about 0.1 to about 10 parts by weight per 100 parts by weight poly(arylene sulfide).
Claim 4
Dependent Claim
32 words
The composition of claim 2 in which the polyolefin is selected from the group consisting of normally solid homopolymers and copolymers of aliphatic 1-olefins having from 2 to about 10 carbon atoms.
Claim 5
Dependent Claim
24 words
The composition of claim 3 in which the polyolefin is selected from the group consisting of polyethylene, polypropylene, and copolymers of ethylene and propylene.
Claim 6
Dependent Claim
33 words
The composition of claim 2 in which the poly(arylene sulfide) is present in an amount within the range of about 10 to about 60 weight percent, based on the weight of the composition.
Claim 7
Dependent Claim
13 words
The composition of claim 5 in which the poly(arylene sulfide) is poly(phenylene sulfide).
Claim 8
Dependent Claim
11 words
The composition of claim 6 in which the polyolefin is polyethylene.
Claim 9
Dependent Claim
37 words
The composition of claim 7 in which the polyethylene has a weight average molecular weight in the range of about 1500 to about 250,000 and a density in the range of about 0.91 to about 0.97 g/cc.
Claim 10
Dependent Claim
36 words
The composition of claim 7 in which the composition further comprises titanium dioxide in an amount within the range of about 1 to about 25 parts by weight per 100 parts by weight poly (phenylene sulfide).
Claim 11
Dependent Claim
34 words
The composition of claim 9 in which the polyethylene is present in an amount within the range of about 1.5 to about 3.5 parts by weight per 100 parts by weight poly (arylene sulfide).
Claim 12
Independent Claim
71 words
A method for applying a smooth, continuous coating of a poly(arylene sulfide) to a substrate, the method comprising applying to the substrate a continuous layer of an aqueous slurry comprising a major amount of a curable poly(arylene sulfide) and a minor amount, effective to reduce surface defects in the cured coating, of a polyolefin dispersed in an aqueous medium, removing the aqueous medium, and curing the poly(arylene sulfide) on the substrate.
Claim 13
Independent Claim
71 words
A method for applying a smooth, continuous coating of a poly(arylene sulfide) to a substrate, the method comprising applying to the substrate a continuous layer of an aqueous slurry comprising a major amount of a curable poly(arylene sulfide) and a minor amount, effective to reduce surface defects in the cured coating, of a polyolefin dispersed in an aqueous medium, removing the aqueous medium, and curing the poly(arylene sulfide) on the substrate.
Claim 14
Dependent Claim
37 words
The method of claim 11 in which the polyolefin is present in the aqueous slurry in an amount within the range of about 0.1 to about 10 parts by weight per 100 parts by weight poly(arylene sulfide).
Claim 15
Dependent Claim
32 words
The method of claim 12 in which the polyolefin is selected from the group consisting of normally solid homopolymers and copolymers of aliphatic 1-olefins having from 2 to about 10 carbon atoms.
Claim 16
Dependent Claim
24 words
The method of claim 13 in which the polyolefin is selected from the group consisting of polyethylene, polypropylene, and copolymers of ethylene and propylene.
Claim 17
Dependent Claim
34 words
The method of claim 14 in which the polyarylene sulfide is cured by heating at a temperature in the range of about 260° C. to about 480° C. for at least about 5 minutes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |