US4160790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impact nylon molding compositions
Assignee: Honeywell International Inc
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Filing: 1977-08-03
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Granted: 1979-07-10
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Expires: 1997-08-03
Abstract
Abstract Synergistic improvement of nylon-6 or nylon-66 impact resistance by blending, in the melt, with minor proportions of both an ethylene/acrylic acid copolymer and an ethylene/ethyl acrylate copolymer.
Inventors
- 👤 Charles D. Mason
- 👤 Paul W. Flood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:10
CPC Classifications
C; C09; C09J; C09J177/00; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
In a melt-blended composition of nylon-6 or nylon 66, as 60-98 percent by weight of the composition, blended with a copolymer of ethylene containing from 1-20 mol percent in the copolymer of randomly distributed units of acrylic acid or ethyl ester thereof: the improvement which comprises such blend containing both a copolymer of ethylene with such acid and a copolymer of ethylene with such ester at weight proportions, between the acid and ester copolymers, from 2 parts of acid copolymer: 12 parts ester copolymer up to 16 parts of acid copolymer: 5 parts ester copolymer by weight, whereby the notched Izod impact resistance of the composition is higher than for a like composition in which either one of the copolymers is substituted for the said blend of both copolymers.
Claim 2
Dependent Claim
129 words
In a melt-blended composition of nylon-6 or nylon 66, as 60-98 percent by weight of the composition, blended with a copolymer of ethylene containing from 1-20 mol percent in the copolymer of randomly distributed units of acrylic acid or ethyl ester thereof: the improvement which comprises such blend containing both a copolymer of ethylene with such acid and a copolymer of ethylene with such ester at weight proportions, between the acid and ester copolymers, from 2 parts of acid copolymer: 12 parts ester copolymer up to 16 parts of acid copolymer: 5 parts ester copolymer by weight, whereby the notched Izod impact resistance of the composition is higher than for a like composition in which either one of the copolymers is substituted for the said blend of both copolymers.
Claim 3
Dependent Claim
52 words
Composition of claim 1 wherein the ethylene/acrylic acid copolymer contains 3 to 5 mol percent of acrylic acid units and the ethylene/ethyl acrylate copolymer contains 5 to 10 mol percent of ethyl acrylate units, and each copolymer has melt index as herein defined in the range of 2 to 20 g./10 min.
Claim 4
Dependent Claim
83 words
Composition of claim 2 containing about 10-15 weight percent of ethylene copolymers with from 1 part of acid copolymer: 2 parts of ester copolymer up to 2 parts of acid copolymer: 1 part of ester copolymer by weight; containing from about 80 to 90 weight percent of nylon-6, said nylon-6 having melt index as herein defined in the range of 2 to 20 g./10 minutes; and containing up to 15% by weight, based on the nylon ingredient, of caprolactam monomer and water-extractable oligomers.
Claim 5
Dependent Claim
16 words
Compositions of claim 1 wherein the nylon content is 60-90 percent by weight of the composition.
References Cited (Backward Citations)
CA740501A
Cited
US3375219A
Cited
US3516961A
Cited
US3472916A
Cited
US3845163A
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US3492367A
Cited
US3626026A
Cited
US3676400A
Cited
US3963799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |