US4134874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing aid for poly(arylene sulfide) resins
Assignee: Phillips Petroleum Co
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Filing: 1977-09-19
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Granted: 1979-01-16
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Expires: 1997-09-19
Abstract
Abstract A method for improving processability of compositions of normally solid polymers of arylene sulfide by the addition of an amount of solid ethylene polymer effective to improve the processability of the composition. A composition of matter of normally solid poly(arylene sulfide) and an amount of solid ethylene polymer effective to improve processability of the composition. In a preferred embodiment the amount of solid ethylene polymer in the total composition is in the range of about 0.1 to about 5 weight percent.
Inventors
- 👤 Donald G. Needham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:28
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/02; C08L23/00; C08L23/02; C08L23/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
50 words
A method for improving processability of compositions of matter comprising normal polymer of arylene sulfide which comprises the addition of an amount of solid ethylene polymer in the range of about 0.1 to about 5 weight percent of the total composition said amount effective to improve processability of said composition.
Claim 2
Independent Claim
50 words
A method for improving processability of compositions of matter comprising normal polymer of arylene sulfide which comprises the addition of an amount of solid ethylene polymer in the range of about 0.1 to about 5 weight percent of the total composition said amount effective to improve processability of said composition.
Claim 3
Dependent Claim
27 words
A method of claim 1 wherein the total composition comprises filler in an amount of up to about 75 weight percent by weight of the total composition.
Claim 4
Dependent Claim
37 words
A method of claim 2 wherein about 50 to about 65 weight percent of the total composition is filler, about 0.5 to about 2 weight percent is polyethylene, and the remainder of the composition is poly(phenylene sulfide).
Claim 5
Dependent Claim
21 words
A method of claim 2 wherein filler is chosen from among glass, talc, iron oxide, carbon black, clays, and mixtures thereof.
Claim 6
Dependent Claim
40 words
A composition of matter comprising normally solid poly(arylene sulfide) and an amount of solid ethylene polymer in the range of about 0.1 to about 5 weight percent of the total composition said amount effective to improve processability of said composition.
Claim 7
Dependent Claim
40 words
A composition of matter comprising normally solid poly(arylene sulfide) and an amount of solid ethylene polymer in the range of about 0.1 to about 5 weight percent of the total composition said amount effective to improve processability of said composition.
Claim 8
Dependent Claim
27 words
A composition of claim 5 wherein the total composition comprises filler in an amount of up to about 75 weight percent by weight of the total composition.
Claim 9
Dependent Claim
37 words
A composition of claim 6 wherein about 50 to about 65 weight percent of the total composition is filler, about 0.5 to about 2 weight percent is polyethylene, and the remainder of the composition is poly(phenylene sulfide).
Claim 10
Dependent Claim
21 words
A composition of claim 6 wherein filler is chosen from among glass, talc, iron oxide, carbon black, clays, and mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |