US5049446A
Expired / Lapsed
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Poly(arylene sulfide) composition for molding articles
Assignee: Phillips Petroleum Co
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Filing: 1989-10-18
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Granted: 1991-09-17
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Expires: 2009-10-18
Abstract
Abstract A poly(arylene sulfide) composition containing an aromatic sulfone polymer and reinforcing material is provided for molding large articles free of internal cracks. The inventive composition optionally contains a high molecular weight polyphenylene sulfide, a reinforcing material such as glass fibers and a sulfone polymer containing at least one recurring aliphatic group in the polymer chain.
Inventors
- 👤 Jennings P. Blackwell
- 👤 William H. Beever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:43
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08L; C08L81/00; C08L81/02; C08L81/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249946; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
50 words
A method for improving the crack resistance of a thick-walled molded article prepared from a poly(arylene sulfide) molding composition, the method comprising incorporating a sulfone polymer having at least one recurring aliphatic group in the polymer backbone in a molding composition comprising poly(arylene sulfide) and a glass fiber reinforcing material.
Claim 2
Independent Claim
50 words
A method for improving the crack resistance of a thick-walled molded article prepared from a poly(arylene sulfide) molding composition, the method comprising incorporating a sulfone polymer having at least one recurring aliphatic group in the polymer backbone in a molding composition comprising poly(arylene sulfide) and a glass fiber reinforcing material.
Claim 3
Dependent Claim
56 words
The method of claim 1 wherein the poly(arylene sulfide) is a polyphenylene sulfide of high molecular weight having an inherent viscosity 0.25 dl/g or greater and a melt flow rate within the range from about 50 to about 700 grams per 10 minutes and the sulfone polymer is derived from the reaction of 2,2-bis(4-hydroxyphenyl)propane and 4,4°-dichlorodiphenylsulfone.
Claim 4
Dependent Claim
64 words
The method of claim 1 wherein the poly(arylene sulfide) is present in an amount of about 20 to about 30 weight percent, the sulfone polymer is present in an amount of about 20 to about 30 weight percent and the glass fiber reinforcing material to present in an amount of about 30 to about 50 weight percent, based on the weight of the composition.
Claim 5
Dependent Claim
47 words
The method of claim 1 wherein the poly(arylene sulfide) molding composition comprises from about 0.1 to about 10 weight percent of an ethylene polymer having a density in the range of about 0.910 to about 0.940 g/cc and a melt index of greater than about 100g/10 minutes.
Claim 6
Dependent Claim
29 words
A thick-walled molded article having improved crack resistance comprising poly(arylene sulfide), sulfone polymer having at least one recurring aliphatic group in the polymer backbone, and glass fiber reinforcing material.
Claim 7
Dependent Claim
29 words
A thick-walled molded article having improved crack resistance comprising poly(arylene sulfide), sulfone polymer having at least one recurring aliphatic group in the polymer backbone, and glass fiber reinforcing material.
Claim 8
Dependent Claim
53 words
The article of claim 5 wherein poly(arylene sulfide) is polyphenylene sulfide of high molecular weight having an inherent viscosity 0.25 dl/g or greater and a melt flow rate within the range from about 50 to about 700 grams per 10 minutes and sulfone polymer is derived from the reaction of 2,2-bis(4-hydroxyphenyl)propane and 4,4'-dichlorodiphenylsulfone.
Claim 9
Dependent Claim
61 words
The article of claim 5 wherein poly(arylene sulfide) is present in an amount of about 20 to about 30 weight percent, sulfone polymer is present in an amount of about 20 to about 30 weight percent and glass fiber reinforcing material to present in an amount of about 30 to about 50 weight percent, based on the weight of the composition.
Claim 10
Dependent Claim
42 words
The article of claim 5 further containing from about 0.1 to about 10 weight percent of an ethylene polymer having a density in the range of about 0.910 to about 0.940 g/cc and a melt index of greater than about 100g/10 minutes.
Claim 11
Dependent Claim
91 words
A thick-walled molded article consisting of polyphenylene sulfide of high molecular weight present in an amount from about 16 to about 45 weight percent, polysulfone containing an aliphatic group in the polymer chain present in an amount from about 16 to about 45 weight percent, and glass fibers present in an amount from about 25 to about 60 weight percent, each weight percent based on the total composition and the weight ratio of said polyphenylene sulfide to said polysulfone being in the range from greater than 2/3 to less than 3/2.
Claim 12
Dependent Claim
91 words
A thick-walled molded article consisting of polyphenylene sulfide of high molecular weight present in an amount from about 16 to about 45 weight percent, polysulfone containing an aliphatic group in the polymer chain present in an amount from about 16 to about 45 weight percent, and glass fibers present in an amount from about 25 to about 60 weight percent, each weight percent based on the total composition and the weight ratio of said polyphenylene sulfide to said polysulfone being in the range from greater than 2/3 to less than 3/2.
Claim 13
Dependent Claim
125 words
A thick-walled molded article consisting of polyphenylene sulfide of high molecular weight present in an amount from about 16 to about 45 weight percent, polysulfone containing an aliphatic group in the polymer chain present in an amount from about 16 to about 45 weight percent, ethylene polymer having a density of about 0.910 to about 0.940 g/cc and a melt index of greater than about 100g/10 minutes present in an amount from about 0.1 to about 10 weight percent, and glass fibers present in an amount from about 25 to about 60 weight percent, each weight percent based on the total composition and the weight ratio of said polyphenylene sulfide to said polysulfone being in the range from greater than 2/3 to less than 3/2.
Claim 14
Dependent Claim
125 words
A thick-walled molded article consisting of polyphenylene sulfide of high molecular weight present in an amount from about 16 to about 45 weight percent, polysulfone containing an aliphatic group in the polymer chain present in an amount from about 16 to about 45 weight percent, ethylene polymer having a density of about 0.910 to about 0.940 g/cc and a melt index of greater than about 100g/10 minutes present in an amount from about 0.1 to about 10 weight percent, and glass fibers present in an amount from about 25 to about 60 weight percent, each weight percent based on the total composition and the weight ratio of said polyphenylene sulfide to said polysulfone being in the range from greater than 2/3 to less than 3/2.
Claim 15
Independent Claim
125 words
A method for improving the internal crack resistance of a thick-walled molded article prepared from a poly(arylene sulfide) molding composition, the method consisting of incorporating in a molding composition sulfone polymer having at least one recurring aliphatic group in the sulfone polymer backbone, high molecular weight polyphenylene sulfide having an inherent viscosity 0.25 dl/g or greater and a melt flow rate within the range from about 50 to about 700 grams per 10 minutes, and glass fibrous reinforcing material, the weight ratio of said polyphenylene sulfide to said sulfone polymer being in the range from greater than 2/3 to less than 3/2 and glass fibers being present in an amount of each 30 to about 50 weight percent based on the weight of the composition.
Claim 16
Independent Claim
125 words
A method for improving the internal crack resistance of a thick-walled molded article prepared from a poly(arylene sulfide) molding composition, the method consisting of incorporating in a molding composition sulfone polymer having at least one recurring aliphatic group in the sulfone polymer backbone, high molecular weight polyphenylene sulfide having an inherent viscosity 0.25 dl/g or greater and a melt flow rate within the range from about 50 to about 700 grams per 10 minutes, and glass fibrous reinforcing material, the weight ratio of said polyphenylene sulfide to said sulfone polymer being in the range from greater than 2/3 to less than 3/2 and glass fibers being present in an amount of each 30 to about 50 weight percent based on the weight of the composition.
Claim 17
Dependent Claim
43 words
A thick-walled molded article having improved internal crack resistance comprising poly(arylene sulfide), sulfone polymer having at least one recurring aliphatic group in the polymer backbone, and glass fiber reinforcing material, a portion of said article having a thickness of at least 0.5 inch.
Claim 18
Dependent Claim
43 words
A thick-walled molded article having improved internal crack resistance comprising poly(arylene sulfide), sulfone polymer having at least one recurring aliphatic group in the polymer backbone, and glass fiber reinforcing material, a portion of said article having a thickness of at least 0.5 inch.
Claim 19
Dependent Claim
19 words
The article of claim 7 wherein a portion of said article has a thickness of at least 0.5 inch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |