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US4322503A
Expired / Lapsed
US
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Fatty acid amide nucleating agents for butene-1 polymer compositions
Assignee: Shell USA Inc
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Filing: 1980-12-15
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Granted: 1982-03-30
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Expires: 2000-12-15
Abstract
Abstract The crystallization from the melt of an isotactic butene-1 homopolymer composition or isotactic butene-1-ethylene copolymer composition is promoted by adding a small amount of a nucleating agent selected from the group consisting of N,N'-ethylene-bis-stearamide and stearamide.
Inventors
- 👤 Ananda M. Chatterjee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
52 words
A method for promoting crystallization from the melt of an isotactic butene-1 homopolymer or isotactic butene-1-ethylene copolymer having no more than about 15 mole percent of ethylene, which comprises adding to a composition comprising the homopolymer or copolymer about 0.02 to 5.0% by weight of N,N'-ethylene-bis-stearamide or stearamide as crystallization nucleating agent.
Claim 2
Independent Claim
52 words
A method for promoting crystallization from the melt of an isotactic butene-1 homopolymer or isotactic butene-1-ethylene copolymer having no more than about 15 mole percent of ethylene, which comprises adding to a composition comprising the homopolymer or copolymer about 0.02 to 5.0% by weight of N,N'-ethylene-bis-stearamide or stearamide as crystallization nucleating agent.
Claim 3
Dependent Claim
20 words
The method as defined in claim 1, wherein the nucleating agent is added to the composition comprising the butene-1 homopolymer.
Claim 4
Dependent Claim
13 words
The method as defined in claim 2, wherein the nucleating agent is N,N'-ethylene-bis-stearamide.
Claim 5
Dependent Claim
13 words
The method as defined in claim 2, wherein the nucleating agent is stearamide.
Claim 6
Dependent Claim
20 words
The method as defined in claim 1, wherein the nucleating agent is added to the composition comprising the butene-1-ethylene copolymer.
Claim 7
Dependent Claim
21 words
The method as defined in claim 5, wherein the butene-1-ethylene copolymer contains from about 0.1 to 10 mole percent of ethylene.
Claim 8
Dependent Claim
21 words
The method as defined in claim 5, wherein the butene-1-ethylene copolymer contains from about 0.1 to 8 mole percent of ethylene.
Claim 9
Dependent Claim
13 words
The method as defined in claim 5, wherein the nucleating agent is N,N'-ethylene-bis-stearamide.
Claim 10
Dependent Claim
13 words
The method as defined in claim 7, wherein the nucleating agent is N,N'-ethylene-bis-stearamide.
Claim 11
Dependent Claim
13 words
The method as defined in claim 5, wherein the nucleating agent is stearamide.
Claim 12
Dependent Claim
13 words
The method as defined in claim 7, wherein the nucleating agent is stearamide.
Claim 13
Dependent Claim
27 words
The method as defined in claim 2, wherein the nucleating agent is added to the composition in an amount of from about 0.02 to 2.5% by weight.
Claim 14
Dependent Claim
27 words
The method as defined in claim 2, wherein the nucleating agent is added to the composition in an amount of from about 0.05 to 1.0% by weight.
Claim 15
Dependent Claim
27 words
The method as defined in claim 3, wherein the nucleating agent is added to the composition in an amount of from about 0.02 to 0.25% by weight.
Claim 16
Dependent Claim
27 words
The method as defined in claim 5, wherein the nucleating agent is added to the composition in an amount of from about 0.05 to 2.5% by weight.
Claim 17
Dependent Claim
27 words
The method as defined in claim 5, wherein the nucleating agent is added to the composition in an amount of from about 0.1 to 1.0% by weight.
Claim 18
Dependent Claim
27 words
The method as defined in claim 7, wherein the nucleating agent is added to the composition in an amount of from about 0.05 to 2.5% by weight.
Claim 19
Dependent Claim
27 words
The method as defined in claim 7, wherein the nucleating agent is added to the composition in an amount of from about 0.1 to 1.0% by weight.
Claim 20
Dependent Claim
27 words
The method as defined in claim 9, wherein the nucleating agent is added to the composition in an amount of from about 0.02 to 0.5% by weight.
Claim 21
Dependent Claim
27 words
The method as defined in claim 9, wherein the nucleating agent is added to the composition in an amount of from about 0.02 to 0.25% by weight.
References Cited (Backward Citations)
US2991264A
Cited
US3756997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-29 | 1985-09-28 | 1986-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-29 | 1989-09-28 | 1990-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-29 | 1993-09-28 | 1994-03-30 | $7700.00 | Window Closed / Lapsed |