US4105709A
Expired / Lapsed
US
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Polyamide compositions
Assignee: Asahi Kasei Corp
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Filing: 1976-03-30
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Granted: 1978-08-08
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Expires: 1996-03-30
Abstract
Abstract A polyamide composition comprising 50 to 95 parts by weight of a polyamide and 50 to 5 parts by weight of an ethylenic copolymer of ethylene, an alkyl ester of unsaturated carboxylic acid, an unsaturated carboxylic acid and a metal salt of unsaturated carboxylic acid has excellent processability such as fluidity at melting and remarkably improved impact strength when molded. The polyamide composition may further contain one or more inorganic materials such as glass fiber without lowering physical properties.
Inventors
- 👤 Isamu Iwami
- 👤 Hironobu Kawasaki
- 👤 Atsuro Kodama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
110 words
A composition comprising (A) 50 to 95 parts by weight of a polyamide and (B) 50 to 5 parts by weight of an ethylenic copolymer of ethylene, (a) an alkyl ester of unsaturated carboxylic acid, (b) an unsaturated carboxylic acid, an (c) a metal salt of unsaturated carboxylic acid, the proportion of ethylene in the copolymer being from 90% to 98% by mole and the monomeric units (a), (b) and (c) having the following relationship in terms of the number of moles a, b, and c, respectively: a/(a + b + c) × 100 = 5 - 50% and c/(a + b + c) × 100 = 5 - 90%.
Claim 2
Dependent Claim
110 words
A composition comprising (A) 50 to 95 parts by weight of a polyamide and (B) 50 to 5 parts by weight of an ethylenic copolymer of ethylene, (a) an alkyl ester of unsaturated carboxylic acid, (b) an unsaturated carboxylic acid, an (c) a metal salt of unsaturated carboxylic acid, the proportion of ethylene in the copolymer being from 90% to 98% by mole and the monomeric units (a), (b) and (c) having the following relationship in terms of the number of moles a, b, and c, respectively: a/(a + b + c) × 100 = 5 - 50% and c/(a + b + c) × 100 = 5 - 90%.
Claim 3
Dependent Claim
31 words
A composition according to claim 1, wherein the amount of polyamide is 65 to 90 parts by weight and the amount of ethylenic copolymer is 35 to 10 parts by weight.
Claim 4
Dependent Claim
19 words
A composition according to claim 1, wherein the polyamide is nylon-6, nylon-6,6, nylon-6,10, nylon-3, nylon-4, nylon-6,12, nylon-11, or nylon-12.
Claim 5
Dependent Claim
13 words
A composition according to claim 1, wherein the polyamide is nylon-6,6 or nylon-6.
Claim 6
Dependent Claim
63 words
A composition according to claim 1, wherein the ethylenic copolymer contains the monomeric units (a), (b) and (c) in the proportions of a/(a + b + c) × 100 = 10 - 40% and c/(a + b + c) × 100 = 10 - 85% wherein a, b and c are the number of moles of the monomeric units (a), (b) and (c).
Claim 7
Dependent Claim
46 words
A composition according to claim 1, wherein the alkyl ester of unsaturated carboxylic acid is methyl acrylate, ethyl acrylate, n-butyl methacrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, t-butyl acrylate, isobutyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, t-butyl methacrylate, or isobutyl methacrylate.
Claim 8
Dependent Claim
22 words
A composition according to claim 1, wherein the alkyl ester of unsaturated carboxylic acid is methyl acrylate, ethyl acrylate or methyl methacrylate.
Claim 9
Dependent Claim
19 words
A composition according to claim 1, wherein the unsaturated carboxylic acid is acrylic acid, methacrylic acid or ethacrylic acid.
Claim 10
Dependent Claim
31 words
A composition according to claim 1, wherein the metal of the metal salt of unsaturated carboxylic acid is Na, K, Mg, Ca, Ba, Zn, Cu, Cd, Al, Fe, Co or Ni.
Claim 11
Dependent Claim
25 words
A composition according to claim 1, wherein the metal of the metal salt of unsaturated carboxylic acid is Na, K, Mg, Ca, Ba or Zn.
Claim 12
Dependent Claim
30 words
A composition according to claim 1, wherein the polyamide is nylon-6,6 and the ethylenic copolymer is a copolymer of ethylene, methyl methacrylate, methacrylic acid and sodium salt of methacrylic acid.
Claim 13
Dependent Claim
32 words
A composition comprising (I) 50 - 95 parts by weight of the composition as claimed in claim 1 and (II) 50 - 5 parts by weight of one or more inorganic materials.
Claim 14
Dependent Claim
25 words
A composition according to claim 12, wherein the inorganic material is glass fiber, asbestos, bentonite, diatomaceous earth, talc, calcium carbonate, calcium sulfate or calcium sulfite.
Claim 15
Dependent Claim
13 words
A composition according to claim 12, wherein the inorganic material is glass fiber.
Claim 16
Dependent Claim
39 words
A process for preparing the composition as claimed in claim 12 which comprises preparing previously the polyamide composition by melt kneading the polyamide and the ethylenic copolymer and then melt kneading the resulting polyamide composition with the inorganic material.
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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) | 1981-08-07 | 1982-02-06 | 1982-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-07 | 1986-02-06 | 1986-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-07 | 1990-02-06 | 1990-08-08 | $7700.00 | Window Closed / Lapsed |