US3765829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colourable polyolefin compositions
Assignee: Ethylene-Plastique
•
Filing: 1970-12-07
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Granted: 1973-10-16
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Expires: 1990-12-07
Abstract
Abstract Polyolefin compositions are difficult to dye and a method is proposed which comprises incorporating 2 to 15 percent by weight of a statistical copolymer of ethylene and maleic anhydride. In a preferred form of the invention the polymer composition is subjected to amination with one of the various kinds of polyamine. The polymer compositions so produced contain reactive sites which considerably facilitate the process of dyeing of these polymers. The dyed polymer compositions have excellent properties and can be spun and otherwise processed readily.
Inventors
- 👤 B Lambert
- 👤 A Nicco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:58
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; D06P3/791; C; C08; C08F; C08F8/00; C08L; C08L23/00; C08L23/02; D01; D01F; D01F6/00; D01F6/44; D01F6/46
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
40 words
A composition according to claim 1, in which the statistical copolymer contains 0.5 to 1.0 percent by weight of the polyolefin and the copolymer of ethylene and maleic anhydride of anhydride groups derived from the maleic anhydride copolymerized with ethylene.
Claim 2
Dependent Claim
24 words
A composition according to claim 1, which has been subjected to amination with at least one polyamine having at least one primary amine group.
Claim 3
Dependent Claim
18 words
A composition according to claim 3, which has been aminated with a polyamine having two primary amine groups.
Claim 4
Dependent Claim
25 words
A composition according to claim 3, in which the maleic anhydride content is less than 0.2 percent by weight of the polyolefin and the copolymer.
Claim 5
Dependent Claim
21 words
A shaped article prepared from a polymer composition according to claim 1, which has been dyed with an anionic reactive dyestuff.
Claim 6
Dependent Claim
92 words
A process for the preparation of a polyolefin composition which can be readily and uniformly dyed, which comprises treating a statistical copolymer of ethylene and maleic anhydride, having a grade according to ASTM Test 1238-65T of 1 to 1,000 dg/min and containing 0.1 to 1.5 percent by weight of the polyolefin and the copolymer of ethylene and maleic anhydride of anhydride groups derived from the maleic Anhydride copolymerised with ethylene, with a polyamine having at least one primary amine group, and then admixing the treated copolymer with a crystalline or semi-crystalline polyolefin.
Claim 7
Dependent Claim
85 words
A process for the preparation of a polyolefin composition, which comprises admixing a crystalline or semi-crystalline polyolefin with a statistical copolymer of ethylene and maleic anhydride, having a grade according to ASTM Test 1238-65T of 1 to 1,000 dg/min and containing 0.1 to 1.5 percent by weight of the polyolefin and the copolymer of ethylene and maleic anhydride of anhydride groups derived from the anhydride and subjecting the resultant composition to amination of the copolymer with a polyamine having at least one primary amine group.
Claim 8
Dependent Claim
37 words
A process according to claim 8, in which the amination is carried out by steeping a finished or semi-finished article of the polymer composition in a solution of the amine in a swelling solvent for the polyolefin.
Claim 9
Dependent Claim
17 words
A process according to claim 7, in which a polyamine having two primary amine groups is used.
Claim 10
Dependent Claim
17 words
A process according to claim 8 in which a polyamine having two primary amine groups is used.
Claim 11
Dependent Claim
17 words
A process according to claim 9 in which a polyamine having two primary amine groups is used.
Claim 12
Dependent Claim
24 words
A composition according to claim 2, which has been subjected to amination with at least one polyamine having at least one primary amine group.
Claim 13
Dependent Claim
25 words
A composition according to claim 4, in which the maleic anhydride content is less than 0.2 percent by weight of the polyolefin and the copolymer.
References Cited (Backward Citations)
US3127234A
Cited
CA759534A
Cited
US3156745A
Cited
US3422055A
Cited
US3284380A
Cited
US3388190A
Cited
US3320226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |