US4292416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer blends
Assignee: Phillips Petroleum Co
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Filing: 1980-02-21
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Granted: 1981-09-29
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Expires: 2000-02-21
Abstract
Abstract A polymer blend comprising a polyamide and a small effective amount of a poly(arylene sulfide) resin. The addition of the poly(arylene sulfide) resin improves the properties of the polyamide and, especially, the molding characteristics of polyamides.
Inventors
- 👤 Robert S. Shue
- 👤 Lacey E. Scoggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:32
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
77 words
A polymeric blend exhibiting improved properties comprising: (a) a major amount of a polyamide selected from the group consisting of polyamide resins obtained by (1) the polymerization of caprolactam, and (2) the condensation of a dibasic acid and a diamine, and (b) a small but effective minor amount ranging from about 0.01 to about 10 weight percent of the total composition, sufficient to improve impact strength and/or warpage resistance of the blend, of a poly(arylene sulfide) resin.
Claim 2
Dependent Claim
77 words
A polymeric blend exhibiting improved properties comprising: (a) a major amount of a polyamide selected from the group consisting of polyamide resins obtained by (1) the polymerization of caprolactam, and (2) the condensation of a dibasic acid and a diamine, and (b) a small but effective minor amount ranging from about 0.01 to about 10 weight percent of the total composition, sufficient to improve impact strength and/or warpage resistance of the blend, of a poly(arylene sulfide) resin.
Claim 3
Dependent Claim
66 words
A composition according to claim 1 wherein the amount of (b) present ranges from about 0.1 to about 1 weight percent of the total composition and wherein (a) is a linear terephthalamide polymer composed of recurring structural units of the formula ##STR3## wherein R is selected from the group consisting essentially of 5-methylnonamethylene, 2,4-dimethyloctamethylene, and 2,4,6-trimethylheptamethylene, with at least 50 percent of the R's being 5-methylmonamethylene.
Claim 4
Dependent Claim
10 words
A molded article formed from the composition of claim 1.
Claim 5
Dependent Claim
21 words
A composition according to claim 1 wherein said poly(arylene sulfide) resin possesses a melting point higher than that of the polyamide.
Claim 6
Dependent Claim
26 words
A composition according to claim 1 wherein (b) is poly(phenylene sulfide) and the amount of (b) present ranges from about 0.1 to about 1 weight percent.
Claim 7
Dependent Claim
18 words
A composition according to claim 1 wherein (a) is prepared from terephthalic acid and a methylnonanediamine isomer mixture.
Claim 8
Dependent Claim
38 words
A composition according to claim 1 wherein (a) is prepared from terephthalic acid and a methylnonanediamine isomer mixture and (b) is poly(phenylene sulfide) and the amount of (b) present ranges from about 0.1 to about 1 weight percent.
Claim 9
Independent Claim
83 words
A method for improving properties of polyamides selected from the group consisting of polyamide resins obtained by (1) the polymerization of caprolactam, (2) the condensation of a dibasic acid and a diamine, and which comprises incorporating therein a small but effective minor amount ranging from about 0.01 to about 10 weight percent of the total composition of a poly(arylene sulfide) resin which amount is sufficient to improve impact strength and/or warpage resistance of the resulting blend compared to polyamide compositions without poly(arylene sulfide).
Claim 10
Independent Claim
83 words
A method for improving properties of polyamides selected from the group consisting of polyamide resins obtained by (1) the polymerization of caprolactam, (2) the condensation of a dibasic acid and a diamine, and which comprises incorporating therein a small but effective minor amount ranging from about 0.01 to about 10 weight percent of the total composition of a poly(arylene sulfide) resin which amount is sufficient to improve impact strength and/or warpage resistance of the resulting blend compared to polyamide compositions without poly(arylene sulfide).
Claim 11
Dependent Claim
75 words
A method according to claim 8 wherein the amount of (b) present ranges from about 0.1 to about 1 weight percent of the total composition and (b) has a higher melting point than (a) and wherein (a) is a linear terephthalamide polymer composed of recurring structural units of the formula ##STR4## wherein R is selected from the group consisting essentially of 5-methylnonamethylene, 2,4-dimethyloctamethylene, and 2,4,6-trimethylheptamethylene, with at least 50 percent of the R's being 5-methylnonamethylene.
Claim 12
Dependent Claim
27 words
A method according to claim 8 wherein (b) is added as particulate material and the resulting blend is subjected to hot mixing above the melting point of(a).
Claim 13
Dependent Claim
37 words
A method according to claim 8 wherein a molded article is formed from the blend of polyamide and poly(arylene sulfide) resin exhibiting superior impact strength and/or warpage resistance compared to articles formed without added poly(arylene sulfide) resin.
Claim 14
Dependent Claim
43 words
A method according to claim 8 wherein said polyamide is formed from terephthalic acid and a methylnonanediamine isomer mixture and said poly(arylene sulfide) resin is poly(phenylene sulfide) and the amount incorporated into said polyamide ranges from about 0.1 to about 1 weight percent.
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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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |