US4339555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a polyamide base resin composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1980-10-24
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Granted: 1982-07-13
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Expires: 2000-10-24
Abstract
Abstract A polyamide based resin composition is prepared mixing a resin composition with a urea compound of the formula: R2-NHCONH-R1-NHCONH-R3 wherein R1 is an aromatic hydrocarbon group and R2 and R3 are both aliphatic groups of 8 to 32 carbon atoms, said resin composition being prepared by melt mixing 99 to 40 parts by weight of a polyamide resin and 1 to 60 parts by weight of a modified ethylene copolymer prepared by graft copolymerizing a copolymer of ethylene and an alpha -olefin of at least three carbon atoms with an alpha , beta -unsaturated carboxylic acid or derivative thereof.
Inventors
- 👤 Yasuhiro Ohmura
- 👤 Seiichiro Maruyama
- 👤 Hiroyuki Kawasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:43
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06; C08L77/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
A process for the production of a polyamide based resin composition, comprising: (a) preparting a modified ethylene copolymer by graft polymerizing from 0.05 to 1.5% by weight of an α, β-unsaturated carboxylic acid or derivative thereof onto an ethylene copolymer prepared by copolymerizing ethylene with an α-olefin of at least three carbon atoms; (b) melt mixing from 1 to 60 parts by weight of said modified ethylene copolymer with 99 to 40 parts by weight of a polyamide resin; and (c) subsequently mixing from 0.005 to 5 parts by weight of a urea compound of the formula: R 2 --NHCONH--R 1 --NHCONH--R 3 , wherein R 1 is an aromatic hydrocarbon group and R 2 and R 3 are both aliphatic groups of 8 to 32 carbon atoms, based on 100 parts by weight of said resin composition.
Claim 2
Dependent Claim
138 words
A process for the production of a polyamide based resin composition, comprising: (a) preparting a modified ethylene copolymer by graft polymerizing from 0.05 to 1.5% by weight of an α, β-unsaturated carboxylic acid or derivative thereof onto an ethylene copolymer prepared by copolymerizing ethylene with an α-olefin of at least three carbon atoms; (b) melt mixing from 1 to 60 parts by weight of said modified ethylene copolymer with 99 to 40 parts by weight of a polyamide resin; and (c) subsequently mixing from 0.005 to 5 parts by weight of a urea compound of the formula: R 2 --NHCONH--R 1 --NHCONH--R 3 , wherein R 1 is an aromatic hydrocarbon group and R 2 and R 3 are both aliphatic groups of 8 to 32 carbon atoms, based on 100 parts by weight of said resin composition.
Claim 3
Dependent Claim
35 words
The process of claim 1, wherein said co-polymer of ethylene and an α-olefin of at least three carbon atoms is prepared by copolymerizing 50-95 mole % of ethylene with 50-5 mole % of the α-olefin.
Claim 4
Dependent Claim
10 words
The process of claim 1, wherein said α-olefin is propylene.
Claim 5
Dependent Claim
10 words
The process of claim 1, wherein said α-olefin is butene-1.
Claim 6
Dependent Claim
17 words
The process of claim 1, wherein said α, β-unsaturated carboxylic acid or derivative thereof is maleic anhydride.
Claim 7
Dependent Claim
12 words
The process of claim 1, wherein said urea compound is 1,4-bis-(3-octadecylureidomethyl) benzene.
Claim 8
Dependent Claim
12 words
The process of claim 1, wherein the urea compound is 1,4-bis-(3-octadecylureido) benzene.
Claim 9
Dependent Claim
12 words
The process of claim 1, wherein the polyamide resin is nylon 6.
Claim 10
Dependent Claim
12 words
The process of claim 1, wherein the polyamide resin is nylon 6.6.
Claim 11
Dependent Claim
12 words
A polyamide based resin composition prepared by the process of claim 1.
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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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |